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905
Medical
Professional
04/28/2012

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Term
Lewy bodies
Definition
cytoplamic inclusion found in Parkinson's disease
Term
The Golgi apparatus's effect on certain amino acids
Definition
- modifies N-oligosaccharides on asparagine
- adds O-oligosaccharides on serine and threonine
- adds mannose-6-phospate to proteins for trafficking to lysosomes
Term
Source of ECM proteoglycans
Definition
Golgi apparatus
Term
1. function of COPI vesicular trafficking protein
2. COPII?
3. clathrin
Definition
1.retrograde, Golgi to ER
2. anterograde
3. trans-Golgi
Term
Cowdry A bodies
Definition
The cytoplasmic inclusion bodies in the herpes virus
Term
E2F is released when _____. This allows the cell cycle to go from ____.
Definition
Rb is phosphorylated. G1 --> S phase
Term
5 Drugs that act on the microtubules
Definition
mebendazole (antihelminthic)
griseofulvin (antifungal)
vincristine/vinblastine (anti-cancer)
paclitaxel (anti-breast cancer)
colchicine (anti-gout)
Term
What effects will high cholesterol or long-chain saturated fatty acid concentration have on the plasma membrane?
Definition
Increase the melting point and decrease the fluidity of the plasma membrane
Term
Cortisol and corticosteroids inhibit which enzyme in the prostaglandin- production pathway?
Definition
Phospholipase A2
Phosphotidylinositol to arachadonic acid
Term
Types of endoperoxides and their functions
Definition
Prostacyclin (PGI)- decreases: platelet aggregation and vascular, bronchial, and uterine tone, increases bleeding time
Prostaglandin (PGE or F)- increases uterine tone, decreases vascular and bronchial tone
Thromboxane- opposite of prostacyclin
Term
Two families of tyrosine kinase receptors
Definition
growth factors= single-pass transmembrane protein
insulin and IGF-1= 2 alpha subunites to bind extracellular ligand and 2 beta subunits for tyrosine kinase activity
Term
Effect of prostaglandins on bronchial tone and vascular tone
Definition
decreased bronchial and vascular tone
Term
Acetaminophen
MOA and clinical use
Definition
reversibly inhibits cyclooxygenase, mostly in CNS. Inactivated peripherally.
Antipyretic and analgesic, but not anti-inflammatory. Used instead of aspirin in children to prevent Reye's syndrome.
Term
NSAIDs (ibuprofen, naproxen, indeomethacin, ketorolac)
MOA and clinical use
Definition
reversibly inhibits cyclooxygenase. Blocks prostaglandin synthesis.
No anti-platelet effect. Antipyretic, analgesic, and anti-inflammatory at twice the dose
Term
Why use celecoxib instead of NSAIDs?
Definition
less toxicity to the gastric mucosa
Term
Define permanent, stable and labile cells.
Definition
Permanent- arrested in G0
Stable- can transition form G0 to G1 phase
Labile- constantly regenerating themselves due to absence of the G0 phase and a short G1 phase (skin, hair follicles, bone marrow)
Term
Granzyme B, from cytotoxic T cells, leads to the _______
Definition
activation of caspases
Term
Immunologic substances that trigger apoptosis
Definition
TNF-a
Granzyme B with help from perforin
Term
Tissues with a single blood supply that undergo pale infarction:________
Definition
heart, kidney, spleen
Term
What cytokines are particularly important in the formation of granulomas?
Definition
TNF-a and IFN-y
Term
What cell type plays a role in inflammation by generating fibrinogen and CRP?
Definition
hepatocytes
Term
What cell is most responsible for acute and chronic inflammation, respectively?
Definition
acute- neutrophiles
chronic- macrophages
Term
Treatment for keloid scar
Definition
inject glucocorticosteroids into keloid --> disruption of collagen synthesis
Term
Type of collagen found in skin and granulation tissue
Definition
Type III collagen
Term
Type of collagen in cartilage, vitreous body, and nucleus pulposus
Definition
Type II collagen
Term
Type of collagen found in bone, skin, tendon, dentin, fascia, cornea, and late wound repair
Definition
Type I collagen
Term
Triad of obstructive jaundice
Definition
Pruritus, dark urine pale stools
Term
Alcohol consumption and malignancy
Definition
Tumors of the head neck esophagus and liver BUT NOT PANCREATIC CANCER
Term
Autosomal dominant polycystic kidney disease
At birth
Definition
Microscopic cysts are present at birth but too small to be detected by ultrasound. Manifests later in life
Term
Pericardial knock
Definition
Brief high frequency precordial sound heard in early diastole in patients with constrictive chronic pericarditis. It occurs earlier than an s3 ventricular gallop and may be confused with the opening snap of mitral stenosis. Constrictive pericarditis requires months or years to develop
Term
Which drugs inhibit platelet aggregation by inhibiting phosphodiesterase activity and increasing camp
Definition
Dipyridamole and cilostazol
Term
Which drugs are go iib iiia inhibitors
Definition
Abciximab eptifibatide tirofiban
Term
The main mechanism of glucose induced inhibition of lac operon expression is
Definition
Depletion of cAMP not the repressir protein to the operator site
Term
Alpha 1 agonists
Definition
Phenylephrinr methoxamine
Term
Beta 2 agonists
Definition
Isoproterenol terbutaline ritodrine
Term
The primary mechanism of iron deficiency anemia is
Definition
Blood loss and NOT POOR NUTRITION
Term
What organelle becomes hypertrophied in hepatocytes with chronic phenobarbital use?
Definition
Smooth ER
Term
Does myometrial growth in pregnancy occur primarily as a result of hyperplasia or hypertrophy?
Definition
hypertrophy
Term
Blocking of the mesocortical pathway results in
Definition
an increase in the negative symptoms of psychosis
Term
Blocking of the mesolimbic pathway results in
Definition
relief of psychosis (target of neuroleptics)
Term
Lateral area of hypothalamus
Definition
hunger. destruction --> anorexia, failure to thrive. inhibited by leptin
Term
Ventromedial area
Definition
satiety. destruction (ex. cranipharyngioma) --> hyperphagia. stimulated by leptin
Term
Anterior hypothalamus
Definition
coolin, parasympathetics, GnRH release
Term
Posterior hypothalamus
Definition
heating, sympathetics
Term
Treatments for narcolepsy
Definition
amphetamines, modafinil and sodium oxybate
Term
Schizoid personality disorder
Definition
chosen social withdrawal, avoidant personality disorder is fear of social failure
Term
Congenital Rubella: cause of deafness
Definition
damages the cochlear duct, organ of corti, derived from surface ectoderm- the saccular portion of the otic vesicle
Term
Treatments for social phobia and performance anxiety
Definition
sp= SSRIs
pa= B-blockers
Term
PTSD treatment
Definition
SSRIs
Term
Difference between classical and operant conditioning
Definition
classical by association
operant by reinforcement
Term
If likelihood ratios are given which evaluation of diagnostic testing is most appropiate
Definition
predictive values or specificity over 1- specificity multiplied by the likelihood odds ratio
Term
Adverse effects of bupropion
Definition
hypokalemia and hypochloremia
Term
Function of superior colliculi
Definition
conjugate vertical gaze center
Term
From which brachial pouch is the epithelial lining of the palatine tonsil
Definition
2nd
Term
which cranial nerve is responsible for head turning?
Definition
spinal accessory CN XI
Term
Jaw jerk reflex
Definition
pathologic- in UMN lesion, mandibular to mandibular reflex
Term
A woman involved in an accident cannot turn head to the left and has a right shoulder droop. Which structure is damaged?
Definition
Right sternocleidomastoid muscle, innervated by the spinal accessory nerve
Term
MOA of donepezil and rivastigmine (Alzheimer's disease)
Definition
Anti-acetylcholinesterases
Term
MOA of tropicamide and benztropine
Definition
muscarinic ANTAgonists
Term
Which drugs reduces premature uterine contractions? What is their MOA?
Definition
terbutaline and ritodrine
Beta-2 agonists
Term
What is the action of tyrosine hydroxylase? It is inhibited by which drug? It needs what as a cofactor?
Definition
tyrosine to DOPA
Metyrosine
Biotin
Term
What are the actions of:
1. Hemicholinium
2. Vesamicol
3. Black Widow Spider toxin
4. Reserpine
5. a2s and M2s at presynaptic cleft
6. ATII at presynaptic cleft
7. Guanethidine and Bretylium
8. Amphetamines, Ephedrine, and Tyramine
Definition
1. Prevents choline entry into axon
2. Prevents vesicular packaging of ACh
3. Increases ACh release
4. Prevents vesicular packaging of NE
5. inhibits NE vesicle release
6. increases NE vesicle release
7. Prevents NE vesicle release
8. Increase NE vesicle release
Term
From where are the following hormones secreted:
Estradiol
Estriol
Estrone
Estrogen in males
Definition
ovary
placenta
adipocytes
testes
Term
What amino acids are necessary for purine synthesis?
Definition
Glycine, Aspartate, Glutamine
Term
What is the female homologue to the following male structures:
1. Corpus spongiosum
2. Cowper/ bulbourethral glands
3. Prostate gland
4. Glans penis
5. Ventral penile shaft
6. Scrotum
Definition
1. Vestibular bulbs
2. Bartholin glands
3. Skene glands
4. Clitoris
5. Labia minora
6. Labia majora
Term
What are the most common brain tumors in adults?
Definition
1. Metastasis
2. Glioblastoma Multiforme
3. Meningioma/ Schwannoma
Term
What are the three most common primary brain tumors in children?
Definition
1. Pilocytic Astrocytoma
2. Medulloblastoma
3. Epipendyoma
Term
Adverse effect of proteases in HAART therapy
Definition
Diabetes
Term
Adverse effect of metronidazole
Definition
Disulfuram-like reaction
Term
What are the musculoskeletal signs of an internal capsule lesion?
Definition
"clasp knife" rigidity
Term
Which drug is given to patients on MAO inhibitors who eat tyramine-containing foods?
Definition
Phentolamine
Term
Which a1 blocker does not have an effect on blood pressure?
Definition
tamulosin- flomax
Term
Which a2 blocker is used to treat depression?
Definition
mirtazapine
Term
Common adverse effects of B-blockers
Definition
impotence, masked diabetic emergency
Term
What type of drug is oxybutynin and glycopyrrolate?
Definition
cholinergic antagonists
Term
MOA of ectothiophate
Definition
indirect cholingeric agonist
Term
ligand to receptor defect in CML
Definition
PDGF
Term
How is number needed to treat calculated?
Definition
1 divided by absolute risk reduction (event rate in placebo group- event rate in treatment group)
Term
Describe changes in bony structures seen in:
Rickets patients
Osteoporosis
Paget's disease
Osteopetrosis
Definition
unmineralized osteoid matrix accumulation around trabeculae
trabecular thinning with fewer interconnections
Lamellar bone structure resembling a mosaic
spongiosa filling medullary canal with mature trabeculae
Term
Which two enzymes does lead inhibit?
Definition
ALA dehydratase
Ferrochetalase
Term
typical traditional high potency antipsychotics (more likely to cause extrapyramidal symptoms)
Definition
haloperidol, fluphenazine, pimozide
Term
atypical antipsychotics (treat both positive and negative symptoms of schizophrenia)
Definition
clozapine, risperidone, olazapine, quetiapine
Term
Typical low potency antipsychotics (more likely to cause antihistaminergic and anticholinergic effects)
Definition
chlorpromazine, thioridazine
Term
Which antigens assemble in HBV virion?
Definition
HBcAg and HBeAg
Term
Antigens to which MHC are processed in the RER and which are processed in lysosomes?
Definition
MHCI = RER
MHC II= lysosomes
Term
Pyrimethamine antibiotic
MOA and Clinical Use
Definition
antifolate
malaria and toxoplasmosis
Term
What type of enzymes are BRCA-1 and 2?
Definition
DNA Repair enzymes
Term
Proto oncogene in small cell carcinoma of the lung
Definition
N-myc
Term
Which structures pass through the superior orbital fissure?
Definition
CN III-CNVI, the nasociliary branch of the trigemincal, and the superior opthalmic vein.
Term
Which structure pass through the inferior orbital fissure?
Definition
maxillary nerve, infraorbital vessels, and branches from the sphenopalatine ganglion
Term
Which structures pass through the optic canal?
Definition
the optic nerve and the opthalmic artery
Term
Foramen Rotundum
Foramen Ovale
Definition
maxillary
mandibular
Term
which antidepressants cause urinary retention, cardiac arrhythmias, orthostatic hypotension, and sedation?
Definition
TCAs- anticholinergic
Term
Drugs that may cause seizures
Definition
Bupropion, Isoniazid if given w/o B6,Imipenem
Term
Adverse effects of aplastic anemia
Definition
skin rash, agranulocytosis, aplastic anemia, hepatoxicity (PTU), Methimazozle is tetratogenic
Term
Tumors that are associated with Psammoma bodies
Definition
Papillary carcinoma of the thyroid
Serous cystadenocarcinoma of the ovary
Meningioma
Malignant Mesothelioma
Term
Which thyroid cancer is associated with the following: RET oncogene and NTRKI, activation tyrosine kinases and BRAF gene (serine/threonine kinase) mutation
Definition
Paillary carcinomas
Medullary is associated with RET gene mutation and activation of receptor tyrosine kinases
Term
pancreas divisum
Definition
failure of the ventral and dorsla pancreatic buds to fuse at the 8th week.
Term
Complete failure to obliterate the ompalomesenteric duct results in
Definition
vitelline fistula, a small connection between the ileum and the outside of the body at the umbilicus
Term
Partial obliteration of the omphalomesenteric duct leads to
Definition
Meckel diverticulum
Term
Recombination
Definition
between two defective viruses co-infecting the same host cell can yield a cytopathic wild-type genome. Recombination is gene exchange that occurs through the crossing over of two segmented viruses that infect the same host cell.
Term
Phenotypic mixing
Definition
when co-infection of the host cell if two viruses leads to a progeny expressing both phenotypes of each virus. Wild type mutation does not occur however.
Term
symptoms of Conn's disease
Definition
increased sodium retention --> hypertension
increased potassium retention --> paresthesia and muscle weakness (hypokalemia)
Term
Light microscopy of Reye's syndrome
Definition
Microvesicular steatosis
Term
which amino acid does serotonin derive from and which cofactor is necessary for its synthesis?
Definition
tryptophan, dihydrobiopterin
Term
Bacterial infection associated with boiled eggs
Definition
Salmonella
Term
What is the mechanism of action of pramipexole and ropinerole?
Definition
Stimulates dopamine receptors
treatment for Parkinson's
Term
What structures are derived from teh first brachial pouch?
Definition
middle ear, mastoid air cells, and eustachian tube
Term
What structures are derived from the 3rd brachial pouch?
Definition
thymus and inferior parathyroid glands
Term
Which cytokines inhibit Th2 cells?
Definition
IFN-y
Term
what are monocytes in connective tissue called?
Definition
histiocytes
Term
Amino acid substitution for Scikle Cel disease
Definition
valine for glutamic acid at pos. 6 of B globin chain
Term
what are the symptoms of serum sickness?
Definition
fever, urticaria, arthralgias, proteinuria, and lymphadenopathy 5-10 days after exposure.
Term
Caudal regression syndrome in newborns
associated maternal diseases
symptoms
Definition
diabetes
agenesis of sacral and lumbar spine, falccid paralysis, dorsiflxed feet, and urinary incontinence. But there is a range of severity
Term
strict vegetarians are at risk for which vitamin def.
Definition
B12 and iron
Term
What type of infections do ammaglobulinemia patients present with?
Definition
extracellular, encapsulated organisms
Term
Which diarrhea producing bacteria form exotoxins prior to ingestion? Which ones form toxin after?
Definition
Before- B. cereus, S. aureus- gram positive
After- E.Coli, Cholera, Shigella- gram negative
Term
What is the underlying cause of proteinuria in minimal change disease?
Definition
loss of charge selectivity
Term
What type of selectivity is the underlying cause of proteinuria in tubulointerstitial nephritis?
Definition
low molecular weight proteins cannot be reabsorbed in the proximal tubule (B2 microglobulin, immunoglobulin light chains, amino acids, and retinol binding protein)
Term
What is functional proteinuria? and what are the causes of functional proteinuria?
Definition
caused by a change in glomerular blood flow
from exercise fever, emothional stress, or cold exposure
Term
verotoxin
Definition
another name for shiga like toxin
Term
Lipid A in LPS
Definition
leads to release of IL-1 and THF-a --> septic shock
Term
What is the virulence factor in most strains of E.coli causing neonatal meningitis?
Definition
K-1 capsule
Term
What type of lymphocytes are more commonly involved in leukemia with a mediastinal mass? which lymphocytes are most commonly involved in leukemia in general?
Definition
T cells
B cells
Term
Which antidepressant does not have sexual side effects?
Definition
bupropion
Term
Which fungus buds with germ tubes?
Definition
Candida
Term
ASPS1 gene mutation and difference from ASPS2
Definition
ASPS1 is a ch. 21q22 mutation, AIRE gene
it also has mucocutaneous candidiasis and autoimmune hypoparatyhroidism whereas type 2 is limited to adrenal insufficiency, Hashimoto's like, and type 1 DM
Term
4th aortic arch on the right and left
Definition
right - subclavian, left- regresses
Term
What are some less memorable functions of IGF-1?
Definition
decreased glucose tolerance -- diabetes, glucose tolerance test is part of acromegaly screening
increased osteoblastic activity
decreased collagen degradation, by inhibiting MMP-13
Term
drugs that can cause aplastic anemia
Definition
anti-hyperthyroidism (PTU, MTM)
anti- seizures (carbamazepine, phenytoin)
antibiotics (chloramphenicol, quinine)
benzenes
Term
What is the MOA of carbidopa?
Definition
inhibits dopa decarboxylase and thus production of dopamine in the periphery
Term
which transcritpion factors do MAP kinases (downstream of tyrosine kinases) phosphorylate?
Definition
FOS and JUN, growth promoters
Term
McCune Albright syndrome
Definition
macronodular adrenal hyperplasia, GNAS mutation leading to overstimulation of Gs --> increased cAMP
Term
Ectopic aldosterone producing adenomas can be caused by
Definition
spironolacton therapy
Term
most common cause of Addison's disease
Definition
autoimmune
Term
Choriocarcinoma
Definition
malignancy of synctio/cytotrophoblastic tissue; not chorionic villi
tx with chemotherapy (methotrexate)if cancer is gestationally-derived, non-gestationally derived will not respond well to chemotherapy
Term
Two vaccinated illnesses have live and killed vaccine forms: which illnesses and what are the names of the live and killed types?
Definition
influenza- intranasal= live, intramuscular= killed
polio- Sabine (oral)= live, Salk (IM)= killed
Term
Anti- smooth muscle cell antibody
Definition
amyloidosis
Term
Which antibody is distributed evenly between extravascular and intravascular pools?
Definition
IgG
Term
Aldesleukin, y interferon, oprelvekin
What are they?
What is its use?
Definition
recombinant cytokines of IL-2, IFN- y and IL-11 respectively
A= renal cell carcinoma, metastatic melanoma
y= chronic granulomatous disease
o= thrombocytopenia
Term
What is used to prevent nephrotoxicity in cyclosporine?
Definition
mannitol diuresis
Term
toxicities of tacrolimus
Definition
nephrotoxicity, peripheral neuropathy, hypertension, pleural effucion, hyperglycemia
Term
sirolimus is also known as
Definition
rapamycin- binds FKBPs and inhibits mTOR --> no T cell proliferation
Term
toxicities of sirolimus (rapamycin)
Definition
hyperlipidemia, thrombocytopenia, leukopenia
Term
MOA of daclizumab
Definition
IL-2 antibody
Term
Azathioprine
MOA
Clinical Use
Toxicity
Definition
6- MCP precursor that interferes with nucleic acid synthesis in proliferating T cells
kidney transplantation and autoimmune disorders
bone marrow suppression, metabolized by xanthine oxidase so bone marrow suppression risk occurs in hyperuricemia patients and patients on xanthine oxidase inhibitors
Term
Muromonab
MOA
Clinical Use
Toxicity
Definition
blocks CD3 on T cells
immunosuppression after kidney transplantation
cytokine release syndrome, hypersensitivity reaction
Term
abciximab
Target and Clinical Use
Definition
GP IIb/IIIa used to prevent cardiac ischemia in unstable angina and in patients with PCI
Term
Bevacizumab and cefuximab
Target and clinical use
Definition
VEGF, VEGF-R
colon cancer, metastatic small cell lung cancer, metastatic renal carcinoma, and recurrent glioblastoma multiforme
Term
Thalidomide
Definition
uses- immunosuppression, anti-angiogenic
mechanism of action- affects TNF-a
tetarogenic
Term
Mycophenolate
MOA and clinical use
Definition
inhibits inosine monophosphate dehydrogenase-->prevents the production of the nucleoside, guanine
blocks protein synthesis in proliferating T and B cells, transplant and lupus nephritis
Term
how do you treat the PAIRS autoimmune diseases?
Definition
TNF-a inhibitors= infliximab, etanercept, adalimumab
can reactivate TB infection
Term
What is the most common subtype of renal cell carcinoma? What is its morphology and characteristics?
Definition
clear cell carcinoma
appears clear due to high glycogen and lipid content in the tumor
lungs are the most common site of metastasis, then bone
paraneoplastic EPO and PTHrp secretion can occur, polycythemia occurs here whereas anemia occurs more often in signet ring carcinoma of the stomach (histological description is very similar)
Term
Which cancers are endemic to Sub-Saharan Africa?
Definition
Burkitt's and hepatocellular carcinoma due to Hep B and C
Term
where do primary brain neoplasms most often metastasize?
Definition
within the CNS
Term
Specific sign of advanced left heart failure
Definition
supine dyspnea relieved by sitting up
Term
Non-specific signs of left sided heart failure
Definition
chest tightness and wheezing on exertion
paroxysmal cough relieved by production of pink frothy sputum (gross)
Term
crescent formation diagnostic sign of what glomerular pathology? What can cause this pathology?
Definition
RPGN leads to renal failure within weeks to months
anti-GBM antibodies with linear IgG and C3 deposits caused by Alport's, Goodpasture's, immune complex mediated with lumpy bumpy granular pattern caused by poststreptococcal glomerulonephritis, SLE, antiphospholipid antibodies, IgA nephropathy, or Henoch Schonlein purpura, and pauci immune associated with vasculitises but can be idiopathic
Term
decreased C3 level is associated with
Definition
poststreptococcal glomerulonephritis- alternative but not classic complement pathway is activated
Term
decreased C4 levels is seen in
Definition
hereditary angioedema. C1 esterase inhibitor mutation so, classic complement pathway is constitutively activated, which permits unopposed breakdown of C4 by C1 esterase.
Term
Intracellular substance accumulation leading to splenomegaly is present in
Definition
Niemann Pick and Gaucher disease
Term
Proliferation of the lymphoid tissue in the spleen results from
Definition
infections, leukemia, and lymphoma
Term
Work hypertrophy in the spleen is due to
Definition
increased removal of damaged RBCs
Term
What is the first area damaged in global cerebral ischemia? Second?
Definition
pyramidal cells of the hippocampus and then neocortex and the Purkinje cells of the cerebellum
Term
single best screening test to confirm the clinical diagnosis of hypothyroidism?
Definition
TSH level
Term
how does hypothyroidism lead to amennorrhea?
Definition
decreased T4 --> increased TRH release --> increased prolactin release
Term
Clear cytoplasm in normal jejunal cell villi is indicative of
Definition
abetalipoproteinemia can also lead to acanthocytes and neurologic defects
Term
series resistance describes blood flow in an individual organ
Definition
R artery+ R arteriole + R capillary + R venule + R vein
Term
Parallel resistance represents
Definition
coronary, splanchnic, renal, and cerebral circulation
Term
debrancher enzyme deficiency
Definition
Cori's disease
Term
Predominant manifestation of galactokinase def.
Definition
cataracts
Term
Positive Trendelenburg sign
Definition
hip dips toward unaffected side when the patient STANDS on the affected leg- superior gluteal nerve supplies the gluteus medius and minmus
Term
What muscle does the inferior gluteal nerve innervate?
Definition
gluteus maximus, responsible for extension of the thigh at the hip and external rotation of the thigh --> difficulty rising or climbing stairs
Term
What muscles does the femoral nerve innervate?
Definition
iliacus and sartorius- flexion of the thigh at the hip
quadriceps femoris- extension of the leg at the knee
knee reflex and anterior thigh sensation
Term
Which knee flexor (hamstring muscle) is not innervated by the sciatic?
Definition
biceps femoris
Term
target of gangciclovir
Definition
guanine nucleoside analogue against CMV DNA polymerase
Term
Infection which Pentamidine is used for
Definition
PCP
Term
Which anitbiotic treats M. avium?
Definition
clarithromycin
Term
acyclovir is used to treat _____ infections
Definition
herpes
Term
IFN a is used to treat
Definition
hep B and C, hairy cell leukemia, condyloma acuminatum, and KAposi's
Term
Alternative treatments for E. coli and K. pneumonia
Definition
colistin (polymyxin), trimethoprim
Term
S. pyogenes and C. Diphtheria treatment
Definition
vancomycin
Term
Homebox genes, what are they? and mutations lead to
Definition
Genes for DNA-binding transcription factors
Drosophilia- limbs develop in incorrect locations
Term
side effects of clopidogrel and ticlopidine
Definition
neutropenia
Term
Thiopental
Definition
IV anesthetic, barbituate, redistributes in skeletal muscle tissues
Term
What are at risk of injury during hysterectomies? Ligation of these structures leads to
Definition
ureters
hydronephrosis
Term
deletion of 13q
Definition
CLL
Term
follicular hyperplasia with tall cells forming intrafollicular projections is seen in a form of what type of thyroid cancer
Definition
papillary, also Psammoma bodies
Term
The presence of colloid containing microfollicles suggests
Definition
benign follicular adenoma, vascular invasion only happens in follicular thyroid acner
Term
Nerves that arise at the middle cerebraller peduncle
signs of lacunar stroke at the middle cerebral peduncle
Definition
trigeminal
dysmetria and dysdiadochokinesia
Term
formula for statistical power and what does it measure
Definition
1-B, is the probability of rejecting the null hypothesis, that is, it is the probability of finding a true relationship
Term
Type I error
Definition
rejection of the null hypothesis when the null hypothesis is really true
Term
Type II error
Definition
occurs when researchers fail to reject the null hypothesis when it is truly false
Beta is the probability of committing a type II error
1- beta is statistical power, it needs to be maximized (in other words beta is decreased) so a difference in the experiment is not missed
Term
What enzyme is responsible for tRNA charging?
Definition
aminoacyl-tRNA synthetase
Term
Bacteria which activate the lectin complement pathway?
Definition
salmonella, listeria, and neisseria
Term
What is the presentation triad of ADA SCID?
Definition
1. severe recurrent infections- candida, PCP, common viruses (even if vaccinated against)
2. Chronic diarrhea
3. Failure to thrive
Term
What are the X-linked immunodeficiencies?
Definition
Wiskott Aldrich
Bruton Agammaglobulinemia
CGD
Hyper IgM
Term
Symptoms of Wiskott Aldrich disease
Definition
progressive deletion of T and B cells, high IgA, low IgM, thrombocytopenia, purpura, eczema, recurrent encapsulated bacterial infections
Term
Symptoms of Ataxia Telangiectasia
Definition
IgA deficiency, troubel tracking movement with eyes, increased lymphoma and leukemia cancer risk, radiation sensivity, increased AFP in children, average age of death = 25 years
Term
Common infection in IL-12 def.
Definition
Mycobacterial infections
Term
Symptoms of Job Syndrome
Definition
def. IFNy --> neutrophils fail to respond to chemotatic stimuli
high IgE levels, eczema
recurrent cold S. aureus abscesses (like Job's boils in the Bible)
2 rows of teeth
Term
Where do uric acid stones due to tumor lysis syndrome occur?
Definition
In the collecting ducts due to the low urine pH in this area, uric acid is soluble at physiologic pH
Term
Which pathway is affected by Lesch Nyhan syndrome?
Definition
The purine SALVAGE pathway --> increased de novo purine synthesis
Term
Cells seen in CML blood smear
Definition
immature lymphoid cells, but very few blasts (sign of acute leukemia)
Term
leukemoid reaction
Definition
left shift, less than 50000, ALP is normal or elevated, it is low in leukemia
Term
What drugs are used for management of heparin induced thrombocytopenia?
Definition
Lepirudin and argatroban- directly inhibit thrombin mediated fibrin formation
Term
What stage of malaria is chloroquine effective against?
Definition
in the bloodstream, but not latent hepatic infections
retinopathy is a adverse effect
Term
What drug is effective at prevent malarial disease relapse?
Definition
Primaquine- also helps completely eradicate infections, not effective against chloroquine resistant strains
Term
Which hormones bind to cytosolic steroid receptors?
Definition
Sex hormones, Vit D., aldosterone
the "cyt" for milky, salty sex
Term
Which hormones bind to nuclear steroid binding receptors?
Definition
glucocorticoids and thyroid hormones
Term
Which hormones bind to tyrosin kinases?
Definition
the growth factors, and the acidophils (growth hormone and prolactin -- JAK STAT tyrosine kinases)
Term
Which class of HAART therapy drugs cause GI intolerance, Cytochrome P450 inhibition, lipodystrophy, and hyperglycemia?
Definition
Protease inhibitors (-navirs)
Term
AE of ritonavir
Definition
pancreatitis
Term
AE of indinavir and atazanavir
Definition
nephrolithiasis, atazanavir also causes extreme jaundice
Term
Which NRTI is a nucleoTIDE analogue not a nucleoSIDE analog like the rest?
Definition
tenofovir, very commonly used
Term
AE of zidovudine
Definition
bone marrow suppression, agranulocytosis, megaloblastic anemia
Term
treatment for occupational exposure of HIV
Definition
zidovudine and lamivudine
Term
AEs of didanosine, zalcitabine, stavudine
Definition
pancreatitis, peripheral neuropathy
didanosine is most commonly associated
Term
AE of didanosine and stavudine
Definition
hepatic steatosis, increased LFTs
Term
Which HAART therapy drug can cause life-threatnening hypersensitivity reaction?
Definition
abacavir
Term
common AEs of NNRTIs
Definition
rash
Term
common AEs of efavirenz
Definition
false positive marijuana test, dementia
Term
which NNRTI is contraindicated in pts. with major depressive disorder
Definition
enfavirenz
Term
Raltegravir, MOA
Definition
inhibits HIV 1 integrase, used to incorporate viral DNA into host DNA
Term
Maraviroc
Definition
binds CCR5 thereby inhibiting gp120 conformational change, tropism test for R5 phenotype needs to be performed prior to use
Term
Caught masturbating in San Diego
Definition
cryptoCOCCUS- MenINgitis
cyptoSPORIDIUM- DIarrhea
Term
Which antiretroviral class is known for causing pancreatitis?
Definition
NRTIs (the ones ending in "ine")
Term
What are the two nervous tissue bundles that run through the GI tract,and where are they located?
Definition
Meissner's plexus- submucosa
Auerbach's myenteric plexus- outer layer of the muscularis externa
Term
Biopsy of a patient with esophagitis reveals large pink intranuclear inclusions and host cell chromatin that is pushed to the edge of the nucleus
Definition
herpes simplex virus
Term
Biopsy of a patient with esophagitis reveals enlarged cells, intranuclear, and cytoplasmic inclusions, and clear perinuclear halo
Definition
CMV
Term
Biopsy of mass in parotid gland reveals a double layer of columnar epithelial cells resting on a dense lymphoid stroma
Definition
Warthin's tumor
Term
Protrusion of the mucosa in the upper esophagus
Definition
esophageal webs, Plummer Vinson syndrome
Term
Outpouching of all layers of the esophagus found just above the LES
Definition
epiphrenic diverticulum
Term
basal cell hyperplasia, eosinophilia, and elongation of the lamina propia papilla seen in biopsy of esophagus
Definition
chronic reflux disease
Term
Goblet cells seen in the distal esophagus
Definition
Barrett's esophagus
Term
A PAS stain on a biopsy obtained from a patient with esophagitis reveals hyphate organisms
Definition
Candida
Term
What is the mechanism involved in chronic graft rejection?
Definition
Antibody-mediated vascular damage
Term
What is the clinical use of scopolamine?
Definition
motion sickness, end of life care (reduce secretions)
Term
what is the treatment for Zollinger Ellison syndrome?
Definition
PPIs and maybe ocreotide
Term
What are the arterial branches off of the common hepatic artery?
Definition
The gastroduodenal --> superior pancreaticoduodenal and right gastro-omental arteries
The right gastric artery
The proper hepatic artery
Term
Side effects of cimetidine
Definition
anti-androgenic --> gynecomastia
Term
what happens to serum pH at the time of gastric acid secretion?
Definition
It rises slightly, becomes more alkaline
Term
The vagus nerve stimulates G cells to release gastrin; however, the administration of muscarinic antagonists such as atropine will not inhibit the release of gastrin. Why?
Definition
The vagus nerve stimulates G cells using gastrin-releasing peptide, not ACh
Atropine does inhibit gastric acid secretion by inhibiting vagal stimulation of parietal and ECL cells
Term
What is the clinical use of tiotropium?
Definition
inhaled drug used to treat COPD
Term
competitive inhibitor Km Vmax and pharmacodynamics
Definition
increased Km, unchanged Vmax, decreased potency
Term
formula for clearance
Definition
0.7Vd/ t 1/2
Term
does renal disease have an effect of the loading dose and maintenance dose of the drug?
Definition
No, only maintenance dose depends on clearance
Term
Charcot-Marie-Tooth
Definition
hereditary motor & sensory neuropathy, pes cavus
defect in anterograde kinesin axonal transport
Term
Treatment for bulimia
Definition
SSRI
Term
antibiotics causing tendon rupture
Definition
fluoroquinones
Term
In I cell disease where are the defective proteins secreted
Definition
outside of the cell instead of being localized to the lysosome
Term
Defect in hypospadia
Definition
urogenital folds
Term
defect in epispadia
Definition
genital tubercle
Term
alteration of which enzyme leads to gain of resistance to NRTIs
Definition
thymidine kinase- NRTIs must be phosphorylated
Term
Reassortment
Definition
when viruses with segmented genomes exchange segments
Term
Fexofenadine
Definition
2nd generation H1 blocker = no sedation
Term
Antimicrobial causing skin rash w/ sun exposure
Definition
tetracyclines
Term
Which diabetes medication decrease gluconeogenesis in the liver?
Definition
metformin
Term
The short gastric arteries are derived from which artery
Definition
splenic artery
Term
Erysipela
Definition
acute bacterial infection of the upper dermis and superficial lymphatics
Term
Erysipela
Definition
acute bacterial infection of the upper dermis and superficial lymphatics
Term
What is increased when orchidectomy is used as a treatment for prostate cancer?
Definition
DNA fragments- prostate undergoes apoptosis
Term
reflex in alpha agonists
Definition
bradycardia
Term
What drug do you give to patients on MAO inhibitors who eat tyramine-containing foods?
Definition
phentolamine
Term
Drug given for thyroid toxicosis
Definition
propanolol
Term
What drug is given to pts. w/ liver failure to reduce bleeding from varices?
Definition
nadolol
Term
What is the antihypertensive used in aortic dissection?
Definition
B blockers
Term
What is the antidote for theophylline toxicity?
Definition
B blockers
Term
Causes of Pure Red Cell Aplasia
Definition
B19, thymoma
Term
Alport's syndrome inheritance pattern
Definition
X-linked recessive
Term
Menetrier's disease (not be confused with Meiere's disease)
Definition
Gastic hyperthrophy with protein loss, parietal cell atrophy, and increased mucous cells. Precancerous. Rugae of stomach are so hypertrophied that they look like brain gyri.
Term
Location of peptic ulcer disease: pain greater with meals leading to weight loss, increased risk of carcinoma
Definition
Gastric
Term
Location of peptic ulcer: pain decreases with meals leading to weight gain. No risk of carcinoma
Definition
Duodenal
Term
which histamine blocker is known to decrease methemoglobin levels?
Definition
cimetidine
Term
AEs of H2 blocker toxicity
Definition
decreased renal excretion of creatinine
Term
Side effects of aluminum hydroxide antacid
Definition
constipation and hypophosphatemia, proximal muscle weakness, osteodystrophy, seizures
Term
Side effects of magnesium hydroxide antacid
Definition
diarrhea, hyporeflexia, hypotension, and cardiac arrest
Term
Side effects of calcium carbonate antacid
Definition
hypercalcemia, and rebound gastric acid increase
Term
What side effect can all antacids have?
Definition
hypokalemia
Term
Inhibitory Gastric Acid Hormones
Definition
Prostaglandins, somatostatin, secretin, GIP
Term
What are the three common places for stomach cancer metastasis?
Definition
Virchow's node- left supraclavicular node
Krukenberg's- bilateral ovaries
Sister Mary Joseph's nodule- periumbilical
Term
what are two cancers that cause signet ring cells?
Definition
lobular carcinoma in situ, gastric adenocarcinoma
Term
side effects of odansetron
Definition
serotonin antagonism --> vasodilation -->constipation and HEADACHES
Term
Serotonin agonists are used to treat what common symptom
Definition
headache
Term
stomach biopsy reveals neutrophils above the basement membrane, loss of surface epithelium, and fibrin-containing purulent exudate.
Definition
Acute gastritis
Term
Small intestine biopsy reveals small lymphocytes with irregular nuclear contours and proliferation of these lymphocytes into the mucosa and epithelial glands
Definition
MALToma
Term
Stomach biopsy reveals lymphoid aggregates in the lamina propia, columnar absorptive cells, and atrophy of glandular structures
Definition
Chronic gastritis
Term
Diffuse thickening of gastric folds, elevated serum gastrin levels, biopsy reveals glandular hyperplasia wihtout foveolat hyperplasia
Definition
Zollinger-Ellison syndrome
Term
Effect prostaglandins have on the gastric lining
Definition
Protective, which is why NSAIDS which decrease prostaglandin production leads to ulcers. Misoprostol is a prostaglandin agonist which increases uterine tone leading to abortion. Beta 2 agonist terbutaline and ritodrine delay premature uterine contractions
Term
Which immunosupressant is a derivative of 6-mercaptopurine?
Definition
azothioprine
Term
Which immunosuppressant causes phocomelia (underdevelopment of limbs and facial features)
Definition
thalidomide (used to be a morning sickness treatment, now used for multiple myeloma)
Term
Which immunosuppressant is nephrotoxic in 75% of patients?
Definition
cyclosporin (prevented by mannitol diuresis)
Term
Which immunosuppressant is an alkylating agent that requires bioactivation in the liver?
Definition
cyclophosphamide
Term
MOA of methotrexate
Definition
inhibits dihydrofolatase
Term
Retroperitoneal structures
Definition
SADPUCKER
suprarenal glands, aorta and IVC, duodenum (ex. 1st part), pancreas (head and body), ureters, Colon (descending and ascending), kidneys, esophagus (lower 2/3rds), rectum (upper 2/3rds)
Term
Falciform ligament (connects, structures contained, derivative)
Definition
liver to anterior abdominal wall
ligamentum teres
fetal umbilical vein
Term
Which ligament contains the portal triad?
Definition
hepatoduodenal ligament
Term
Which ligament can be compressed to control hepatic artery or portal vein bleeding in surgery?
Definition
hepatoduodenal
Term
Which ligaments need to be ligated during splenectomy?
Definition
gastrosplenic, splenorenal
Term
Which ligament contains the short gastric arteries and veins?
Definition
the gastrosplenic
Term
Which ligament contains the splenic artery and vein?
Definition
the splenorenal
Term
What are the actions of GIP hormone?
Definition
decrease gastric H+ release, increase insulin release ( why oral glucose load is used more rapidly than IV)
Term
Motilin and its relationship with erythromycin
Definition
Motilin is secreted by the small intestine and it increases migrating motor complexes during sleep and in fasting state. It quickly moves food through the gut. Erythromycin is a motilin receptor agonist and it is given to post-ileal surgery pts. to move stuff along damaged GI system
Term
How is somatostatin regulated?
Definition
acid increases release, vagal stimulation decreases release
Term
Metoclopramide (MOA, clinical use, and adverse effects)
Definition
MOA serotonin agonist and dopamine antagonist
TX. for gastroparesis in diabetic neuropathy
seizures
Term
Drugs known for seizure side effect
Definition
metoclopramide, bupropion, tramadol, enflurane, evening primrose oil
Term
Type of drug: Tramadol
Definition
pain killer
Term
Type of drug: enflurane
Definition
anesthetic
Term
MOA of domperidone
Definition
D2 antagonist, prokinetic
Term
MOA of cisapride
Definition
serotonin agonist, prokinetic
Term
What enzymes are responsible for the rate limiting of carbohydrate digestion?
Definition
oligosaccharide hydrolases
Term
How is fructose absorbed? glucose and galactose? How are they all transported to the blood?
Definition
facilitated diffusion by GLUT=5
Na dependent SGLT1
GLUT-2
Term
causes of acute pancreatitis
Definition
GET SMASHED
gallstones, ethanol, trauma, steroids, mumps, autoimmune disease, scorpion sting, hypercalcemia/hypertriglyceridemia, ERCP, Drugs (sulfa drugs, HIV NRTIs, and HIV protease inhibitor- ritonavir)
Term
What can acute pancreatitis lead to systemically?
Definition
DIC, ARDS--> respiratory failure, diffuse fat necrosis --> saponification (hypocalcemia), pseudocyst formation, hemorrhage, infection, and multiorgan failure.
Term
Difference between cyst and pseudocyst
Definition
pseudocysts lack epithelial and endothelial cells
Term
what drug category has the following ending:
-ane
-azine
-tidine
- tropin
Definition
inhalational general anesthetic (halothane)
phenothiazine neuroleptics (chlorpromazine)
H2 antagonists (cimetidine)
pituitary hormones (somatotropin)
Term
Insulin release is triggered by
Definition
hyperglycemia, GH, and cortisol
Term
which glucose transporter is on B islet cells?
Definition
GLUT-2, bidirectional, also found in liver, kidney, and entero-blood barrier of small intestine
Term
Diazoxide MOA, Clinical Use, Side Effects
Definition
Potassium Channel Agonist --> smooth muscle relaxation (hypertension) and inhibits insulin release (hyperglycemia, diabetes)
Term
Which glucose transporter is insulin responsive?
Definition
GLUT-4 skeletal and muscle, anabolic effects in these cells
Term
What enzyme converts glucose to sorbitol? What enzyme converts sorbitol to fructose?
Definition
Aldose reducatase
Sorbitol dehydrogenase cells without sorbitol dehydrogenase- (Schwann cells, lens, retina, kidney)are susceptible to osmotic damage in diabetics
Term
Treatment for neuropathic pain in diabetics
Definition
Gabapentin, Pregabalin (also tx. for fibromyalgia)
Term
some differences between type I and type II diabetes
Definition
type I- high insulin sensitivity (just can't get it), type II- low insulin sensitivity
type I- lymphocytic infiltrate, type II- amyloid deposit
Type I- ketoacidosis common, Type II- ketoacidosis rare
Type I- severe glucose intolerance, Type II- moderate to mild glucose intolerance
Term
Which tissues have aldolase reductase but lack sorbitol dehydrogenase?
Definition
kidneys, Schwann cells, lens and retina of the eye
Term
Common cuases of DKA
Definition
almost always associated with excess glucagon, catecholamines, and corticosteroids <---common forms of stress (infection, severe medical illness, dehydration, drug abuse)
Term
Kimmelstiel- Wilson nodules
Definition
acellular nodules in the glomerulus due to acellular nodules
Term
why are type II diabetics less susceptible to DKA?
Definition
insulin present and it blocks lipolysis, no lipolysis no ketones, pancreas can burn out leading to severe DKA though
Term
Labs in DKA
Definition
anion gap metabolic acidosis, leukocytosis, hyperkalemia but total body potassium and magnesium are very low
Term
When do you stop IV insulin in Type I DKA patients?
Definition
when the anion gap metabolic acidosis is cured, NOT JUST glucose levels
Term
Side effects of insulin secretion
Definition
Type I diabetic patients
hypoglycemia, lipodystrophy, and weight gain.
Term
First generation sulfonylureas (names, MOA, clinical use, toxicities)
Definition
tolbutamide, chlorpropamide
close B islet cell potassium channel
stimulates endogenous insulin release, so useless in type I DM
Disulfiram-like reactions
Term
Second generation sulfonylureas (name, action, use, toxicity)
Definition
glyburide, glimepiride, glipizide
endogenous insulin release, useless in Type I
hypoglycemia
Term
Metformin (site of action, use, toxicities and contraindications)
Definition
liver and periphery (not pancreas) decreased gluconeogenesis in liver, increased glycolysis in all organs
used for late stage DM 2 (patients without islet function) PCOS, gestational diabetes
lactic acidosis
pts. w/ renal insufficiency (cleared through kidneys) and pts. receiving IV contrast
Term
Glitazones (names, action, use, toxicities)
Definition
pioglitazone, rosiglitazone
increased insulin sensitivity by increasing action of PPAR transcription factor --> increased enzymes for glucose and lipid metabolism
Type 2 DM
weight, edema (esp w/ insulin injection), hepatotoxicity, heart failure (use with caution in CHF pts. --> MI)
Term
Sitagliptin and Saxagliptin
Definition
inhibitors of DPP IV, prolongs incretin actions --> decrease glucagon and increase insulin, delays gastric emptying
Term
GLP-1 analogues
Definition
exenatide and liraglutide (AE- pancreatitis)
Term
What is normally secreted with insulin and decreases glucagon secretion and gastric emptying?
Definition
amylin (pramlintide is an amylin analogue)
Term
Name that diabetic drug:
- lactic acidosis is a worrisome side effect, helps lower triglycerides and LDL cholesterol levles, hepatic serum transaminases should be monitored in pts. taking this drug, not associated with weight gain and is often used in overweight diabetics
Definition
Metformin
Term
Name that diabetic drug: should not be used in patients with liver cirrhosis, elevated serum creatinine, or IBD
Definition
Acarbose
Term
Name that diabetic drug: not safe in settings of hepatic dysfunction or CHF, metabolized in liver, excellent choice in patients with renal disease, ALTs and ASTs need to be monitored for hepatotoxicity
Definition
Glitazones/ thiazolidinediones
Term
AChesterase inhibitors used to treat glaucoma
Definition
ectothiophate, physiostigmine
Term
Neostigmine is used to treat
Definition
ileus, urine retention, MG diagnosis and treatment (longer-acting than edrophonium, shorter than pyridostigmine)
Term
T or F both small and large intestine has Crypts and villi
Definition
False, large intestine has crypts but not villi, small intestine has both
Term
pH of gastric and colic mucosa
Definition
alkaline, protective
Term
Nateglinide, Repoglinide (use, action)
Definition
Type 2 DM pts. with sulfa allergies
similar to sulfonylureas but bind to SUR-1 on B islet cells leading to ATP channel closure. More rapid, shorter duration
Term
where is folate absorbed?
Definition
jejunum
Term
What are the common symptoms of Whipple's disease?
Definition
PAS macrophages in intestinal lamina propia, mesenteric nodes.
Arthralgias, cardiac and neurologic symptoms
Term
Major cause of intussuception in children
Definition
adenovirus bulks up Peyer's patches
Term
In addition to colon cancer, what is one of the most common causes of GI bleeding in the elderly?
Definition
Angiodysplasia
Term
What are the common causes of small bowel obstruction?
Definition
Adhesions, Bulge/Hernia, Cancer
Term
Total or subtotal atrophy fo the small bowel villi, plasma cells and lymphocyte infiltration in the lamina propia and epithelium, and hyperplasia/elongation of the crypts
Definition
celiac sprue
Term
What effect does glucagon have on glycolysis?
Definition
In the fasting state, glucagon increases cAMP, which increases protein kinase A, which increases fructose bisphosphatase-1, decreases phosphofructokinase 2, decreased glycolysis so glucose can be put in blood
Term
Which enzyme converts glucose 6 phosphate to glucose?
Definition
Glucose 6 phosphatase, def. in Von Gierke's
Term
alpha 1,6 glucosidase def.
Definition
Cori's disease
Term
Necrosis seen in a recluse spider bite
Definition
Coagulative necrosis
Term
What is the cause of heartburn in patients with CREST syndrome?
Definition
fibrous replacement of the muscularis --> esophageal dysmotility --> LES relaxation --> GERD
Term
Which hypercholesterolemia drug is used to increase HDL levels?
Definition
Niacin (also used for familial hypoalphalipoproteinemia- congenital low HDL)
Term
CO's affect on PaO2 and methemoglobinemia
Definition
no affect
Term
Inheritance pattern in Hemophilia A and B
Definition
X-linked recessive
Term
Side effect of bradycardia treatment
Definition
glaucoma (treatment for bradycardia is atropine)
Term
Why is acute intermittent porphyria intermittent?
Definition
As porphobilinogen and aminovulinic acid concentrations increase, they will cause feedback inhibition on the rate-limiting enzyme, ALA synthase
Term
The enzymes mutated in beta-thalassemia are responsible for which intracellular process?
Definition
transcription, processing, and translation of mRNA
Term
Will treatment of Strep Throat decrease the risk of developing rheumatic heart disease and glomerulonephritis?
Definition
No. Only rheumatic heart disease. Glomerulonephritis (Type III hypersensivity) will occur regardless of treatment.
Term
Explain the steps of base-excision repair
Definition
Glycosylases remove the defective base, and the corresponding sugar-phosphate is cleaved and removed by endonuclease, followed by the action of lyase.
Term
What are the "HYPER" problems caused by thiazide diuretics?
Definition
uricemia, calcemia, glycemia, lipidemia
Term
What is dystonia?
Definition
a neurological movement disorder characterized by sustained, involuntary muscle contractions, which force certain parts of the body into abnormal, sometimes painful, movements and postures
Term
What causes hemiballism?
Definition
damage to the contralaterally subthalamic nucleus
Term
What structure is damaged in chronic noise-induced hearing loss?
Definition
the sensorineural cells in the Organ of Corti
Term
Anti- U1 RNP antibodies
Definition
mixed connective tissue disease
Term
Anti-glutamate decarboxylase
Definition
Type 1 diabetes mellitus
Term
IgG antibodies seen in newborns
Definition
Anti-gp120
Term
Common presentation of pts. w/ Primary Sclerosing Cholangitis
Definition
middle-aged male with a history of ulcerative colitis who presents with fatigue and elevated alkaline phosphatase
Term
Common presentation of pts. w/ primary biliary cirrhosis
Definition
middle-aged female with a long history of pruritis at night and fatigue who developed pale stool and xanthelasma
Term
Which structures are adjacent to the lateral ventricle?
Definition
caudate nucleus
Term
Which structure is adjacent to the 3rd ventricle?
Definition
thalamus
Term
Which structure is in between the thalamus and the lentiform nucleus?
Definition
the internal capsule
Term
Which structure is directly caudal to the 3rd ventricle?
Definition
hypothalamus
Term
what are the symptoms and mutation in xeroderma pigmentosum?
Definition
pigmented dryskin, which manifests in the first year of life leading to skin atrophy and skin malignancies
autosomal recessive mutation in DNA excision repair
Term
What is the result of glycolytic enzyme def.? what is the result of a deficiency in pyruvate dehydrogenase?
Definition
RBC hemolysis
Neurological defects
Term
Negative HepBsAg
Positive HepBsAb
Positive HepBcAb
Definition
recovery phase
Term
Negative HepBsAg
Negative HepBsAb
Positive HepBcAb
Definition
window phase
Term
What two compounds are used for the detection of NTDs in pregnancy?
Definition
AFP and acetylcholinesterase
Term
What drug is used for drug-induced Parkinson's?
Definition
benztropine, dopamine agonists aren't used because they can precipitate psychosis symptoms
Term
what mechanism causes the symptoms in Fragile X symptom?
Definition
gene methylation of Fragile X syndrome
Term
Which structures descend through the popliteal fossa?
Definition
the tibial nerve, popiteal vein and artery
Term
Which muscles are responsible for plantar flexion of the foot?
Definition
gastrocnemius, soleus, and plantaris muscles innervated by the tibial nerve
Term
What innervates the skin between the great toe and the second toe? What nerve innnervates the rest of the dorsum of the foot?
Definition
deep peroneal nerve
superficial peroneal nerve
Term
What are the intracellular and extracellular potassium levels in DKA?
Definition
intracellular decreased, extracellular increased <-- via osmotic diuresis induced by glycosuria
Term
Describe the "on-off" phenomenom in advanced Parkinson's disease
Definition
an unpredictable, drug/dose-independent event in which the patient experiences a sudden loss of anti-Parkinsonian effects in otherwise successful levodopa treatment
Term
which histone is the only one located outside of the nucleosome core but still participates in nucleosome packaging?
Definition
histone H1
Term
How are are Kayser-Fleischer rings identified?
Definition
slit-lamp examination
Term
True or False: A symptom of fatty liver disease from alcoholism is portal hypertension.
Definition
False, fatty liver will not cause portal hypertension until it progresses to cirrhosis
Term
insulin growth factor is also called
Definition
somatomedin C
Term
What is the enzyme deficient in alkaptonuria? What is the key symptom in alkaptonuria?
Definition
homogenisitc acid oxidase, which breaks down tyrosine to fumarate
ochronosis0 darkening of connective tissue, sclera, and urine, debilitating arthralgias (homogenistic acid is toxic to cartilage)
Term
What are the three ways homocystinuria can be caused?
Definition
cystathionine synthase deficiency
decreased affinity for B6 on cystathionine
homocysteine methyltransferase (or B12) deficiency
Term
What are the symptoms of homocystinuria?
Definition
mental retardation, osteoporosis, tall stature, kyphosis, lens subluxation (downward and inward), and atherosclerosis leading to early age stroke or MI
Term
What is the cause, main symptom and treatment for cystinuria?
Definition
AR defect of renal tubular COLA amino acid transporter in the PCT
cystine staghorn calculi
acetazolamide is used to alkalinize the urine
Term
What are the symptoms and what substance causes the symptoms in MSUD?
Definition
increased a-ketoacids in blood --> CNS defects
Term
Hartnup disease (mutation and symptoms)
Definition
AR mutation in neutral amino acid transport on renal and intestinal epithelial cells --> causes INCREASED tryptophan excretion (DECREASED reaborption) and DECREASED tryptophan absorption
leads to pellagra (diarrhea, dermatitis, dementia)
Term
What is the DIRECT cause of pellagra?
Definition
niacin deficiency, could be due to tryptophan deficiency leads to niacin deficiency (Hartnup disease)
Term
deficiency in alpha ketoacid dehydrogenase
Definition
MSUD
Term
symptoms of PKU
Definition
growth & mental retardation, hyperactivity, musty odor, SEIZURES, ECZEMA, FAIR SKIN
Term
Drugs that exhibit zero-order kinetics
Definition
phenytoin, ethanol, aspirin (PEA is round like a zero)
Term
Which weak acids are eliminated in the kidney?
Definition
phenobarbital, methotrexate, and aspirin
overdose treated with bicarbonate
Term
What is a common weak base eliminated in the urine?
Definition
amphetamines
treat overdose with ammonium chloride
Term
end result of Phase I metabolism in liver
Definition
drug usually still active
Term
end result of Phase I metabolism in liver
Definition
drug usually still active, or activates pro drug, phase I decreases in elderly
Term
end result of phase II metabolism in the liver
Definition
inactive renally excreted, also some patients are slow acetylators
Term
Which drugs can cause a disulfiram-like reaction?
Definition
metronidazole, certain cephalosporins, procarbazine, 1st generation sulfonylureas
Term
P450 inducers
Definition
Quinidine, Barbituates, St. John's Wort, Phenytoin, Rifampin, Griseofulvin, Carbamazepine, Chronic Alcohol Use
Term
P450 inhibitors
Definition
Macrolides, Amiodarone, Grapefruit juice, Isoniazid, Cimetidine, Ritonavir, Acute alcohol abuse, Ciprofloxacin, Ketoconazole, Sulfonamides
Term
what causes the brown color in brown pigmented gallstones?
Definition
infection in the biliary tract (E. Coli, A. lumbricoides, Opisthorchis sinesis) results in release of B-glucuronidase by injured hepatocytes and bacteria leading to hydrolysis of bilirubin glucuronides and increased amount of unconjugated bilirubin in bile (pigment)
Term
What enzymes converts cholesterol to bile acids?
Definition
7a- hydroxylase. sufficient activity of this enzyme reduces the likelihood of cholesterol gallstone formation
Term
Symptoms of digoxin toxicity
Definition
visual and abdominal disturbances, arrhythmias
Term
Where is the primary site that digoxin is stored in the body?
Definition
the muscle
Term
What accounts for CMVs increased sensitivity to gancicylcovir?
Definition
differences in viral DNA structure
Term
what is a life-threatening symptom of appetite suppressants?
Definition
pulmonary hypertension, inadequate cardiac output and hypotension during exercise--> dizziness and fainting --> sudden death cor pulmonale
Term
What occurs when a ribosome encounters a stop codon?
Definition
releasing factors bind to ribosome and stimulates the release of the formed polypeptide chain and dissolution of the ribosome-mRNA complex.
Term
What is the binding site of transcription factor II D?
Definition
TATA box 25 bp upstream from gene's coding region
Term
What kidney abnormality results from internal hemorrhage?
Definition
acute tubular necrosis form hypoxia leading to oliguria, fluid overload, hyperkalemia, metabolic acidosis (no aldosterone activity)
Term
Describe the histology of acute tubular necrosis
Definition
light microscopy shows granular casts in the tubular lumen. flattening of tubular epithelial cells and tubular epithelial necrosis with denudation of the tubular basement membrane are also seen
Term
What is the rate-limiting step of gluconeogenesis?
Definition
fructose-1,6- bisphosphatase
Term
what cofactor drives kallikrien production? What are the effects of kallikrien?
Definition
XIIa
activates plasmin and bradykinin production
Term
What are some of the effects of bradykinin on the body?
Definition
increased vascular permeability, increased vasodilation, pain
Term
Thrombocytopenia and hypercoagulability
Definition
Heparin induced throbocytopenia
Term
Treatment for heparin induced thrombocytopenia
Definition
direct thrombin inhibitor, hirudin derivatives (lepirudin, bivalirudin), give warfarin until coagulation decreases
Term
treatment for heparin toxicity
Definition
protamine sulfate
Term
enoxaparin
Definition
low molecular weight heparin, SubQ injection, binds Xa, longer half life, does not require monitoring
Term
In which patients are thrombolytics contraindicated?
Definition
patients with active bleeding, history of intracranial bleeding, recent surgery, known bleeding diatheses, or severe hypertension
Term
Explain the pathogenesis of Henoch Schonlein purpura
Definition
increased IgAs in the renal mesangium activates complement and leads to inflammation. Manifests cutaneously as leukoctoclastic vasculitis. increased serum IgA and immunocomplexes
Term
Describe rash in meningococcemia
Definition
starts in trunk and legs and spreads throughout the body
Term
Ristocetin leads to
Definition
activation of GP Ib-IX receptors on platelets and makes them available for vWF binding
Term
Is PTT unchanged or prolonged in von Willebrand's disease?
Definition
It is prolonged vWF binds factor VIII and increases its half-life to 12 hours (w/o 2)
Term
What substance stimulates vWF release from Palade-Wiebl bodies in the endothelium?
Definition
desmopression (DDAVP)
Term
Glanzmann throbasthenia (mutation and lab testing)
Definition
GP IIb-IIIa deficiency
increased bleeding time, normal platelet aggregation response to ristocetin, decreased platelet aggregation response to ADP
Term
Aspirin's effect on platelets
Definition
decreased platelet adhesion and aggregation due to deficiency in TxA2
Term
Pressure atrophy is commonly associated with
Definition
invasive tumors
Term
differences between colitis-induced and sporadic CRC
Definition
colitis-induced: affects younger patients, progress from non-polypoid lesions, have signet ring/mucinous morphology, develop p53 mutations followed by APC mutations (reversed in sporadic), distributed within proximal colon, multifocal in nature, higher histological grade
Term
Effects of improper descent of the hindgut
Definition
horseshoe kidney, anal agensis or imperforate anus
Term
effects of abnormal midgut rotation
Definition
intestine is fixed by fibrous adhesion bands that can cause intestinal obstruction
Term
When do alcohol withdrawal symptoms typically start?
Definition
8-12 hours with insomnia, tremors, autonomic hyperactivity can lead to delirium tremens (seizures and hallucinations) on the third day
Term
baclofen (mechanism and clinical use)
Definition
GABAb agonist
spastic conditions
Term
Why are anti-psychotics (phenothiazines and butyrophenones) contraindicated in pts. with alcohol withdrawal?
Definition
lower seizure threshold
Term
Ovoid or spherical hyaline masses are found in the glomerular mesangium of patients with
Definition
diabetic nephropathy
Term
which diseases are associated with target cells?
Definition
HbC disease, Asplenia, Liver disease, Thalassemia ("THAL-)
Term
what allows RBCs to change shape as they pass through vessels?
Definition
spectrin
Term
Acute intermittent porphyria (affected enzyme, accumulated substances, presenting symptoms and treatment)
Definition
AD mutation in prophobilinogen deaminase
porphobilinogen, S-ALA, uroporphyrin( red wine-colored urine)
neuro defects precipitated by drugs
treat with glucose and heme which inhibit S-ALA synthase (rate-limiting step)
Term
Porphyria cutanea tarda (enzyme affected, accumulated substances, presenting symptoms and common associations)
Definition
uroporphyrinogne decarboxylase
uroporphyrin (tea-colored urine- pink under Wood's lamp)
blistering cutaneous photosensitivity
HepC, hypertrichonosis, alcoholism
Term
What is the most common porphyria?
Definition
porphyria cutanea tarda
Term
Which enzymes are inhibited in lead poisoning? What else does it inhibit? What are the symptoms of lead poisoning? What is the treatment for lead poisoning in adults and children?
Definition
ferrochelatase and ALA DEHYRDRATASE
rRNA degradation
Lead lines in gingivae (Bruton's lines) and on epiphyses of long bones on x-ray (in children), encephalopathy, and Erythrocyte basophilic stippling, Abdominal colic and sideroblastic anemia, wrist and foot drop neuropathies
adults- dimercaprol and EDTA
children- succimmer
Term
What is the mutation in hereditary sideroblastic anemia? What are the lab results? What is the treatment?
Definition
X-linked defect in S-aminolevulinic acid synthase gene
increased iron, normal TIBC, and increased ferritin
pyroxidine
Term
Which cancers are associated with polycythemia vera?
Definition
hepatocellular carcinoma, renal cell carcinoma, hemangioblastoma, pheochromocytoma
Term
What are some non-cancerous causes of polycythemia?
Definition
Down syndrome and vera, COPD and obstructive sleep apnea
Term
What is the effect of low calcium and high protein diets on calcium stone formation?
Definition
increased risk due to increased bone reabsorption, low protein diets are recommended, high protein diets increase acid load which increases bone resorption
Term
Which vitamin decreases endogenous oxalate production?
Definition
B6
Term
Common paramyxoviridae illnesses in infants and children
Definition
croup, bronchiolitis (RSV), mumps and measles
Term
what is the medically important arenavirus?
Definition
lymphocytic choriomeningitis virus- meningoencephalitis, transmitted by infected rodents, not person-to-person
Term
Molluscum contagiosum
Definition
poxvirus, more common in children, flesh-colored papules with an umbilicated center that typically contains white, curdlike material found in anogenital areas and trunk
Term
Councilman bodies are associated with
Definition
HAV infection
Term
Treatment for minimal change disease
Definition
rapid response to corticosteroids
Term
Oval fat bodies in the urine are associated with
Definition
nephrotic syndromes
Term
Which type of tumors are usually radiosensitive?
Definition
high grade tumors, rapidly dividing
Term
antiphosholipid antibody syndrome
Definition
common immune cause of hypercoaguability
lupus or anticardiolipin antibodies plus venous/arterial thromboembolism or frequent spontaneous abortions
typically associated with aPTT prolongation
Term
Folic acid deficiency causes
Definition
hyperhomocysteinemia which is a prothrombotic state
Term
somatostatin release is stimulated by
Definition
low pH
Term
describe LPS
Definition
a heat stable toxin composed of: O antigen, core polysaccharide, and Lipid A (toxic component)
Term
where are the interferon proteins produced
Definition
gamma just T and NK cells, but a and B are made in many cell types
Term
Orotic aciduria (mutation, symptoms, treatment)
Definition
AR mutation in either orotic acid phosphoribosyltransferase or orotidine 5-phosphate decarboxylase
megaloblastic anemia which can't be reversed with B12 and/or folate supplementation, failure to thrive, no hyperammonemia (as seen in ornitine transcarbamoylase def.)
oral uridine administration bypasses faulty step in pathway
Term
What drug inhibits ribonucleotide reductase?
Definition
hydroxyurea
Term
what drug inhibits thymidylate synthase?
Definition
5-FU
Term
what drug inhibits dihydrofolate synthase?
Definition
methotrexate
Term
What drug inhibits the conversion of ribose 5-P to PRPP in de novo purine synthesis?
Definition
6-MP
Term
what is the rate-limiting step of purine synthesis?
Definition
glutamine PRPP aminotransferase
Term
Prokaryotic DNA polymerase which has 5' -->3' synthesis and a 3' --> 5' proofreading exonuclease and elongates the leading strand and lagging strand by adding deoxynucleotides to the 3' end
Definition
DNA polymerase III
Term
Prokaryotic DNA polymerase which degrades the RNA primer and fills in the gap with DNA in a 5' --> 3' direction
Definition
DNA polymerase I
Term
which eukaryotic DNA polymerase elongates the leading strand?
Definition
DNA polymerase delta
Term
which eukaryotic DNA polymerase elongates the lagging strand and synthesizes RNA primers?
Definition
DNA polymerase alpha
Term
Which DNA polymerase acts on mitochondrial DNA?
Definition
DNA polymerase gamma
Term
Which DNA polymerase repairs DNA in eukaryotes?
Definition
beta and epsilon
Term
What are the lab values in Ataxia Telangiectasia?
Definition
increased AFP in a child over 8 months of age
Term
What is the mechanism and symptoms of iron poisoning?
Definition
cell death due to peroxidation of membrane lipids
acute- gastric bleeding, days later metabolic acidosis, weeks later- scarring leads to GI obstruction
Term
Name the following cause of anemia:
a. Microcytic anemia with basophilic stippling
b. HIV positive patient with macrocytic anemia
c. normocytic anemia with red urine in the morning
d. normocytic anemia and elevated creatinine
Definition
a. lead poisoning
b. zivudine
c. paroxysmal nocturnal hemoglobinuria
d. chronic kidney disease (due to decreased EPO)
Term
If two studies have similar results in terms of relative risk but reached disparate conclusions due to different p values, the most likely explanation for this difference is
Definition
different sample size
small sample size makes a study underpowered
Term
Berkson's bias
Definition
selecting hospital patients as the control croup
Term
The power of a study increases proportionally with
Definition
sample size
Term
Increased unconjugated bilirubin is suggestive of
Definition
extravascular hemolysis
Term
Which medication used in treatment of HIV is known for causing bone marrow suppression?
Definition
zidovudine
Term
Which anemias are associated with aplastic anemia with B19?
Definition
sickle cell and hereditary spherocytosis
Term
Cure for hereditary spherocytosis
Definition
splenectomy
Term
Name two causes of MACROangiopathic hemolytic anemia
Definition
prosthetic heart valves and aortic stenosis
Term
An 11 year old child presents with a chronic non-healing ulcer on his foot and imaging shows a small calcified spleen. What drug can improve his symptoms?
Definition
hydroxyurea
Term
Which anemias display basophillic stippling?
Definition
thalassemia, anemia of chronic disease, iron deficiency anemia, lead poisoning
Term
The diepoxybutane (alkylating agent) test is used to find which abnormality
Definition
Fanconi's anemia (DNA repair defect)
Term
Describe procelain gallbladder
Definition
describes a bluish, brittle calcium laden gallbladder wall that develops in patients with chronic cholecystitis. Cholecystectomy is recommended because there is a high risk of gallbladder cancer.
Term
Discuss the effects of cricopharyngeal muscle dysfunction
Definition
cricopharyngeal muscle dysfunction is characterized by difficulty swallowing felt at the throat, nasal regurg, food aspiration may lead to pneumonia. Pharyngeal muscles are relied upon greater and increased intraluminal pressure can cause a herniation through the posterior hypopharynx--Zencker's with food regurgitation days after the meal
Term
scarring and traction in the esophagus results from
Definition
true diverticula associated with medistinal lymphadenitis
Term
foot drop is associated with pathology of which nerve
Definition
common peroneal, blunt trauma to the lateral leg superficial peroneal is only involved in eversion and sensory to the dorsal foot and distal anterior leg. presents with equinovarus- plantar flexed and inverted
Term
which muscles mediate foot eversion?
Definition
peroneus longus and brevis <--foot eversion
Term
The sural nerve
Definition
purely sensory nerve that supplies the posterolateral leg and lateral foot
Term
Gross appearance of acute interstitial nephritis
Definition
grossly normal in shape and size
Term
Common and less common side effects of loop diuretics
Definition
common- hypokalema, hypomagnesemia, hypocalcemia
less common- volume depletion, hyponatremia, decreased GFR, hypotension, ototoxicity(ethacryanic acid has the greatest risk)
Term
Cl channel duration or frequency: barbituates and benzodiazepines
Definition
barbituates-duration, benzodiazepines- frequency
Term
A lesion to a mainstem bronchus will lead to a radiograph displaying
Definition
opacified hemothorax and tracheal deviation away from the opacified side
Term
light microscopy in lactase deficiency
Definition
normal intestinal mucosa
Term
What lab values indicate the poorest prognosis in liver failure
Definition
hypoalbuminemia and prolonged PT- suggest a loss of the synthetic function of the liver
Term
Coagulative necrosis begins _____ hours after the onset of myocardial ischemia
Definition
4- characterized by edema, hemorrhage, and wavy fibers
Term
Predominant light microscopy changes 4-12 hours after myocardial ischemi
Definition
coagulation necrosis and marginal contraction band necrosis
Term
Name three risk factors for endometrial cancer
Definition
nulliparity, early menarche and obesity. all caused increased estrogen stimulation of the endometrium
Term
most important risk factor for HPV
Definition
multiple sexual partners
Term
Which bacteria produce a very narrow zone of beta hemolysis on sheep blood agar?
Definition
Listeria and Groups A and B Streptococcus
Term
Bernard Soulier disease
Definition
decreased platelet count, increased bleeding time
defect in GP Ib- can't be bound to collagen by vWF
Term
Antibodies in idiopathic thrombocytopenix purpura
Definition
anti-GpIIb/IIIa
increased megakaryocytes in bone marrow biopsy
Term
What is the life span of platelet (which is also the maximum life of platelets after a transfusion)?
Definition
8-10 days
Term
Coagulability lab values in aspirin therapy
Definition
increased BT, normal PT and PTT (not affecting coagulation factors)
Term
MOA of clopidogrel
Definition
irreversibly blocks ADP receptors
Term
Abciximab, tirofiban, eptibatide
Definition
antibodies against GpIIb/IIIa on activated platelets; prevents aggregation
first line in acute coronary syndrome
Term
What is the MOA of streptokinase?
Definition
aids in conversion from plasminogen to plasmin. which cleaves fibrin and thrombin clots
Term
MOA of Rivaroxaban
Definition
inhibits factor Xa (enoxaparin is a LMWH that is MORE ACTIVE at activating ATIII against factor Xa)
Term
Genitofemoral nerve
Definition
originates at L1 and L2 and courses along the psoas muscle, it innervates the scrotum/labia majora(genital branch) and cutaneously innervates the femoral triangle (femoral branch)
Term
Lymphatics from the glans penis and the clitoris drain into
Definition
the deep inguinal nodes
Term
The external iliac nodes drain the
Definition
superficial and deep inguinal nodes and the deep lymphatics of the abdominal wall below the umbilicus
Term
The peg cells in the fallopian tubes
Definition
secrete nutrients
Term
In females LH and FSH act at which cells respectively?
Definition
LH- theca cells --> androgens
FSH- granulosa cells ->estradiol
Term
Define uniparental disomy
Definition
when child receives two copies of a chromosome from one parent and zero from the other
Term
When is the prevalence odds ratio used?
Definition
cross-sectional studies to compare prevalence in DIFFERENT populations
Term
What causes the rupture of the dominant ovarian follicle?
Definition
LH surge
Term
What neoplasms are associated with HIV?
Definition
Primary CNS lymphoma, Kaposi sarcoma, Invasive Squamous cell carcinoma, Non-Hodgkin's lymphoma
Term
What are the causes of marginal cell lymphoma (lymphoma due to lymphocyte accumulation outside of immune tissue)?
Definition
Hashimoto's thyroiditis, Sjorgen's syndrome of the salivary gland, chronic gastritis (H.pylori)
Term
What are some causes of the leukemoid reaction (increased WBCs, 80% neutrophils, 5-10% immature band forms)?
Definition
infection and stress, heat stroke, Down Syndrome, Tetralogy of Fallot, Solid tumor paraneoplastic malignancy
Term
Describe Hodgkin's Lymphoma
Definition
one type of cell, extranodal involvement is rare (always continguous), mediatinal involvement common, TB-like symptoms, half are associated with EBV, bimodal age distribution, M>F, prognosis reflects number of Reed Sternberg cells
Term
describe nodular sclerosing lymphoma
Definition
Hodgkin's lymphoma, low RS/normal ratio, excellent prognosis, young adults, men=women
Term
Burkitt's lymphoma: type of lymphoma. What are the 'stars' in the 'starry sky'?
Definition
NHL
macrophages ingesting tumor cells
Term
Where in the body does the sporadic form of Burkitt's lymphoma manifest?
Definition
pelvis or abdomen
Term
What is the most common form of NHL in adults?
Definition
Diffuse B cell lymphoma
Term
Describe the genetics in mantle cell lymphoma
Definition
t(11:14) --> rapid deactivation of cyclin D regulatory gene --> increased cyclin D
Term
what is the lymphoma equivalent of CLL?
Definition
Small lymphocytic lymphoma (different locations)
Term
Most common type of lymphoma in children
Definition
Lymphoblastic Lymphoma
Term
ALL (epidemiology, symptoms, lab values)
Definition
male, white, children
bone pain is common
TdT - immature lymphoblast marker, PAS positive, difficult to blood smear
Term
AML (epidemiology, lab values)
Definition
mid-life with the same risk factors as aplastic anemia (especially cancer treatments)
PAS (-), auer rods which can cause DIC upon lysis, positive for some myeloid esterase, CD13/33
Term
Symptoms of Chronic Leukemias seen on Physical Exam
Definition
Lymphadenopathy and Splenomegaly
Term
CLL (epidemiology, lab values, prognosis)
Definition
older white males in the western world (most common)
95% have B cell markers, smudge cells, AIH anemia (cold and warm)
10% will progress to ALL, tends to be indolent and is only monitored in older pts.
Term
CML (epidemiology, lab values, prognosis)
Definition
adults 25-60
numerous basophils are LAP (-), precursors but not blasts predominate, bleeding tendency
Strong chance of progressing to AML 80% or ALL 20%
Term
Symptoms of Multiple Myeloma
Definition
Hypercalcemia (cytokines increase osteoclast activity), Renal insufficiency, Anemia, Bone lytic lesions/Back Pain
Term
Describe Waldenstroms macroglobulinemia
Definition
M spike= increased IgM -->hyperviscosity symptoms, amyloidosis, no lytic bone lesions
Term
Describe M7 AML
Definition
8:21 associated with Down Syndrome
CD41 and CD61 (+), only AML that is CD13/33 (-)
Most common neonatal leukemia
Term
Describe the histology of Granulosa cell tumors
Definition
unilateral with lipid content, small, cuboidal cells that grow in cords or sheets, Call-Exner bodies- small, glandlike structures that contain an acidophilic material, suggestive of immature ovarian follicles. thecomas are similar but are benign
Term
Extraneoplastic symptoms of Granulosa cell tumors
Definition
precocious puberty, fibrocystic breast changes, endometrial hyperplasia, endometrial carcinoma
Term
Symptoms and Lab values of Klinefelter's syndrome
Definition
long legs, small penis and testes, and absence of male secondary sex characteristics, gynecomastia, and decreased IQ
47 XXY, elevation of FSH and estradiol, reduced testosterone, estrogen:testosterone ratio determines the extent of feminization
Term
What is pseudomyxoma peritonei?
Definition
a condition where the peritoneal cavity fills with mucin due to widespread intraperitoneal metastasis- associated with mucinous cystadenocarcinoma progression
Term
Dysgerminomas (epidemiology and differentiating characteristics)
Definition
ovarian equivalent to testicular seminoma, most common in younger women 10-30
does not secrete estrogen
Term
Which germ cell tumor secretes excess thyroid hormone?
Definition
Teratoma (the most common germ cell tumor)
Term
The withdraw of progesterone causes
Definition
mestruation to begin
Term
Complex atypical hyperplasia of endometrium is associated with
Definition
prolonged exposure to estrogen without opposing progesterone, seen in obese women on HRT
Term
Lab values in menopause
Definition
increased FSH secretion due to no negative feedback
Term
A human fetus with 46 XY genotype has testes with normally functioning Leydig cels but total absence of Sertoli cells. Which of the following phenotypes is most likely to develop?
Definition
Both male and female internal genitalia and male external genitalia (MIF is not produced, but Testosterone (epididymus and vas deferens) and DHT are still made by Leydig cells)
Term
For which type of leprosy is the lepromin skin test positive?
Definition
tuberculoid leprosy ( lepromatous leprosy is negative because of a weak cell-mediated response Th2)
Term
Absence of melanocytes in the skin
Definition
vitiligo
Term
Melanocytes fail to produce melanin
Definition
albinism
Term
Reduced transfer of melanin to keratinocytes, redistribution of existing melanin within the skin
Definition
postinflammatory hypopigmentation
Term
Increased melanosome aggregates within the melanocyte cytoplasm
Definition
cafe au lait spots
Term
Melanocytic hyperplasia
Definition
Lentigo
Term
hyperkeratosis
Definition
hyperplasia of stratum corneum
Term
parakeratosis
Definition
abnormal retention of nuclei in the stratum corneum
Term
What gene mutation is found in 40-60% of patients with melanoma?
Definition
BRAF mutation V600E
Term
Genetic mutation in Glioblastoma
Definition
overexpression of growth factors
Term
Genetic mutation in Glioblastoma
Definition
overexpression of growth factors
Term
Treatment for dermatitis herpetiformis
Definition
gluten-free diet and dapsone
Term
Where is metastatic breast cancer most likely to travel?
Definition
Lung, liver, and bone
Term
What is the primary histologic finding in patients with eczematous dermatitis?
Definition
spongiosis- epidermal accumulation of edematous fluid in intercellular spaces
Term
Acanthosis
Definition
an increase in thickness of the stratum spinosum, commonly associated with psoriasis
Term
hypergranulosis
Definition
excessive granulation in the stratum granulosum of the epidermis, seen in lichen planus
Term
Histologic finding in shingles
Definition
multinucleated inclusion-bearing giant cells, acantholysis
Term
Acantholysis
Definition
loss of intercellular connections in stratum spinosum
Term
Histologic findings in warts
Definition
cytoplasmic vacuoles in keratinocytes and hyperplasia of the epidermis
Term
Vitamin deficiency characterized by dermatitis, cheliosis, glossitis
Definition
B2 or riboflavin
Term
Describe the light reflex pathway
Definition
optic nerve --> ipsilateral pretectal nucleus, located in the superior colliculus-->ipsilateral and contralateral Edinger-Westphal nuclei (reaches contralateral through posterior commissure) --> ciliary ganglion --> sphincter of the iris
Term
What is prescribed to prevent recurrent calcium stones in adults when dietary modifications are unsuccessful?
Definition
citrate- citrate binding free ionized calcium
Term
What is the pH required for the formation of uric acid and cystine stones?
Definition
acidic pH
Term
What are the structural genes of the lac operon?
Definition
B galactosidase, galactoside permease, B galactoside transacetylase
Term
Histology shows flask-shaped ulcer if submucosal abscess of colon ruptures
Definition
E. histolytica
Term
Alpha 1 antitrypsin deficiency: where is the misfolded gene found?, what type of inheritance is it?
Definition
proteins found in ER
codominant mutation
Term
Hepatic Adenoma: Risk factors, symptoms
Definition
OCP use, anabolic steroids, Von Gierke's and Cori's
RUQ pain is possible but usually asymptomatic
Term
Risk factors for Hepatic Angiosarcoma
Definition
vinyl chloride, arsenic
Term
yellowing of skin without scleral icterus
Definition
carotemia- excess carotene, can't have jaundice without icterus
Term
Nonalcoholic Steatohepatitis (prognosis, diagnosis, treament)
Definition
can progress to cirrhosis, lead to hepatocellular carcinoma, worsen Hep C progression
Magnetic Resonance spectroscopy is the gold standard
Lifestyle modifications, TZDs, possibly metformin
Term
Orlistat MOA
Definition
alters fat metabolism by inhibiting pancreatic lipases
Term
Sibutramine (MOA and contraindications)
Definition
sympathomimetic serotonin and norepinephrine reuptake inhibitor
avoid SSRIs and MAOIs, contraindicated in CAD, cerebrovascular disease, CHF, arrhythmia
Term
S3 ventricular gallop reflects
Definition
an increased rate of filling of the LV during middiastole. Therefore it reflects the volume of regurgitant flow recycled back during diastole.
Term
S4 sound implies
Definition
that the LV is reaching its limit of LV compliance during the end of diastole
Term
What are the signs of lithium toxicity? Which drugs can lead to increased lithium levels?
Definition
neuromuscular excitability, irregular course tremors, fascicular twitching, agitation, ataxia, and delirium
thiazide diuretics, ACE inhibitors, and NSAIDs. Lithium levels are increased with HCTZ the same way calcium is.
Term
What is the treatment for lithium toxicity?
Definition
hemodialysis
Term
What is the cardinal manifestation in Von Gierke's disease?
Definition
hepatic steatosis
Term
Blood lactate levels are low after exercise
Definition
McArdle's disease
Term
Entacapone (MOA and use)
Definition
COMT inhibitors
blocks peripheral methylation and degradation of levodopa, allowing more to reach the brain. Tolcapone is another COMT inhibitor but unlike entacopone, tolcapone is associated with hepatotoxicity
Term
Amantidine's use in Parkinson's treatment
Definition
enhances the endogenous effect of dopamine, believed to by increasing synthesis, release, and re-uptake
Term
Name 4 dopamine agonists used in Parkinson's treatment
Definition
bromocriptine, pergolide, pramipexole, ropinerole
Term
MOA of Selegiline
Definition
central MAO-B inhibitor- neuroprotective, used in Parkinson's tx.
Term
Use of trihexyphenidyl and benztropine
Definition
inhibit central muscarinic receptors, used for drug-induced Parkinson's and in patients with tremor as the predominant symptom also respond well
Term
Clinical manifestation of right-sided (ascending colon) colon cancers
Definition
exophytic mass, no intestinal obstruction, symptoms of iron def. anemia, anorexia, malaise and weight loss
Term
Clinical manifestations of left-sided (descending colon) colon cancer
Definition
infiltrative, partial intestinal obstruction resulting in change in stool caliber, constipation, cramping, abdominal pain, abdominal distention, nausea, and vomiting
Term
Difference in symptoms between brachiocephalic and superior vena cava obstruction
Definition
brachiocephalic involves only one side of the face neck chest and arms. the right brachiocephalic also drains the right lympatic duct, which drains lymph from the right upper extremity, the right face and neck, the right hemithorax, and the right upper quadrant of the abdomen.
Term
Crystal found in gout
Definition
monosodium urate crystals
Term
Deposits in calcific tendonitis
Definition
calcium hydroxyapatite
Term
Describe histologic findings in lung hamartomas
Definition
solitary lung nodule with popcorn calcifications, most common benign lung tumor. Lung is the most common location for hamartomas. Contain islands of mature hyaline cartilage, fat, smooth muscle and clefts lined by respiratory epithelium. Hamartomas are composed of cartilage, fibrous and adipose tissue.
Term
Bronchioalveolar carcinoma description
Definition
variant of adenocarcinoma, found in lung periphery, distributes along alveolar septae without vascular or stromal invasion, appears as a peripheral mass or as a pneumonia-like consolidation
Term
How does HCTZ cause hypokalemia and metabolic alkalosis?
Definition
intravascular volume depletion, stimulates aldosterone release...
Term
How does HCTZ causes hyperuricemia?
Definition
hypovolemia stimulates uric acid reabsorption in the PROXIMAL TUBULE.
Term
How do thiazides cause hyperlipidemia?
Definition
By increasing plasma cholesterol and LDL
Term
How do thiazides cause hyperglycemia?
Definition
decreased insulin secretion and glucose uptake by the tissue, may cause impaired carbohydrate tolerance
Term
Treatment for idiopathic hypercalciuria and recurrent calcium stone nephrolithiasis
Definition
thiazide diuretics
Term
Symptoms associated with HYPOnatremia
Definition
neurologic (altered mental status, seizures, etc.)
Term
Symptoms of Hypophosphatemia (commonly seen in alcoholics)
Definition
muscle weakness and paralysis
Term
Histology of silicosis
Definition
eggshell calcification of hilar nodes and birefringent silica particles surrounded by fibrous tissue
Term
Histologic finding of berylliosis
Definition
non-caseating granuloma with or without hilar adenopathy, indistinguishable from sarcoidosis without obvious associated particles
Term
An ascending aortic aneurysm is often associated with what valvular abnormality
Definition
aortic regurgitation, dilated aortic valve root
Term
True or False: cancer cells have high telomerase activity.
Definition
Mostly false. Cancer cells are immortal because these cells continue to divide without aging and shortening of their telomeres.
Term
Postauricular lympadenopathy is associated with
Definition
togavirus (rubella)
Term
Treatment for traveler's diarrhea
Definition
ciprofloxacin
Term
MOA of nystatin and amphotericin B
Definition
polyene antifungal which binds to ergosterol molecules causing pores in the fungal cell membrane
Term
Why is nystatin not used for systemic fungal infections?
Definition
it is not absorbed from the GI tract
Term
Lysozyme: what is it? how does it work?
Definition
antimicrobial enzyme found in secretions and neutrophils
it hydrolyzes bonds in the peptidoglycan cell wall
Term
In which hypersensitivity reaction is TNF-a elevated?
Definition
Type IV
Term
Tabes dorsalis physical examination
Definition
loss of vibratory and position sensing (esp at night w/ loss of visual cues) involvement of the dorsal roots cause loss of pain sensation, paresthesias, and painful crises. areflexia and loss of bladder function can also occur. Argyll Robertson pupil and positive Romberg sign are found
Term
Erythema nodosum is associated with
Definition
S. pyogenes, S aureus, coccidiodomycosis, histoplasmosis, and blastomycosis, chlamydia, crohn's, sarcoidosis, and others
Term
Anterior uveitis (inflammation of the iris) is associated with
Definition
Herpes viruses, syphilis and Lyme disease HLA B27 related diseases and sarcoidosis
Term
How does macrosomia develop in an infant born from a diabetic mother?
Definition
hyperinsulinemia results in increased fat deposition and enhanced fetal growth
Term
Birth defects in children born of a mother with poorly controlled diabetes
Definition
macrosomia, caudal regression syndrome, neural tube defects, ventricular septal defect, transposition of blood vessels, rectal atresia, and renal agenesis.
Term
What keeps a fetus euthyroid?
Definition
maternal thyroid hormones, TSH tests must be performed to test whether the infant is hypothyroid
Term
Hallmark of asbestosis
Definition
localized pleural thickening with calcification, particularly of the parietal pleura of the posterolateral mid-lung zones of the diaphragm
Term
Where is coal worker's pneumoconiosis normally found?
Definition
upper lung zones
Term
What cell marker suggests a good prognosis in ALL?
Definition
blasts cells positive for CD10 CALLA antigen
Term
resistance to tetracyclines and sulfonamides is due to
Definition
decreased uptake and/or increased efflux
Term
Ras overexpression is seen in cancers involving which organs
Definition
pancreatic, gallbladder, colon, endometrial, thyroid, lung
Term
Describe ventricular remodeling after an MI
Definition
infarcted region is fibrosed and thinned, dysfunction leads to volume overload, the remaining viable myocardium is hypertrophied as compensation --> dilated ventricular hypertrophy (contrasted with concentric ventricular hypertrophy due to pressure overload seen in pts with longstanding hypertension)
Term
Describe the structural cardiac changes seen due to aging
Definition
predominantly a shortening in teh apex-to-base dimension accompanied by leftward bowing of teh lower interventricular septum (sigmoid septum)
Term
How does cholelithiasis progress to acute calculous cholecystitis?
Definition
stones disrupt the protective mucus layer, leaving the epithelium exposed to the detergent action of the bile salts. prostaglandins released in the gallbladder wall further incite inflammation of the mucosa and deeper tissues, and gallbladder hypomotility ensues. The increasing distention and internal pressure within the gallbladder eventually result in ischemia. FINALLY, bacteria invade the injured and necrotic tissue, causing an infection, cholecystitis
Term
Clinical triad of fat embolism syndrome
Definition
acute-onset neurologic abnormalities, hypoxemia, and a petechial rash
hypoxemia- PE, neurologic abnormalities- precapillary AV shunts opened due to increased pulmonary pressure, petechial rash due to platelet adherence to fat globules
Term
Describe the Valsalva maneuver
Definition
carotid massage or Valsalva maneuver increase sensation from vagal baroreceptors --> increased vagal stimulation of the heart --> increased refractory period in the AV node, adenosine is recommended if Valsalva maneuver fails
Term
Hip flexor that lies over the iliac fossa
Definition
iliacus muscle
Term
What is the innervation and function of the gluteus minimus and medius muscles?
Definition
Superior gluteal nerve, prevents the contralateral side of the pelvis from dipping when that leg is elevated off the ground (so dip in the right means left muscles and nerve are affected)
Trendelenburg sign
Term
Innervation and action of the gluteus maximus muscle
Definition
inferior gluteal nerve
major extensor of the thigh at the hip
Term
Which cancers are found above and below the pectinate line?
Definition
above- adenocarcinoma
below- squamous cell carcinoma
Term
Describe the similarities shared by enterobacteriaceae
Definition
all species have a somatic O antigen on their endotoxin, K capsule related to virulence, H antigen related to motility, glucose fermenters, oxidase negative
Term
Positive nitrite test
Definition
gram negative bacteria UTI, better indicator than leukocyte esterase
Term
sulfonamides MOA
Definition
PABA antimetabolite, inhibits dihydropteroate synthetase, inhibits folic acid synthesis, bacteriostatic
Term
What drugs cause photosensitivity?
Definition
SAT for a photo
Sulfonamides
Amiodarone
Tetracyclines
Term
What are the symptoms of sulfonamide toxicity?
Definition
nephrotoxicity (tubulointerstitial nephritis), photosensitivity, kernicterus in infants, displacement of other drugs from albumin (like warfarin)
Term
Drugs associated with sulfa allergies
Definition
sulfonamides, celecoxib, furosemide, probenecid, thiazides, TMP-SMX, sulfasalazine, sulfonylureas, acetazolamide
Term
What drugs can cause Steven-Johnson Syndrome?
Definition
Penicillins, Sulfa drugs, Seizure drugs, Allopurinol
Term
Trimethoprim, pyrimethamine: MOA and toxicity
Definition
inhibits dihydrofolate reductase, bacteriostatic
megaloblastic anemia, leukopenia, granulocytopenia--all are alleviated with folinic acid (leucovorin) supplementation
Term
Nifurantoin MOA, uses
Definition
bacteriocidal, reduced by bacteria to reactive metabolite against ribosomes
UTI cystitis (not pyelonephritis) by E. Coli or Staph Saprophyticus (not Proteus), safe in pregnancy
Term
treatment for vancomycin resistant
Definition
linezolid and streptogramins (quinupristin/dalfopristin)
Term
Why are fluoroquinolones contraindicated in pregnancy and children?
Definition
damage to cartilage, only used in children with cystic fibrosis
Term
Discuss the immune system's response to Salmonella infections and treatment considerations
Definition
monocytic response
antibiotics may prolong carrier state in GI tract infection
Term
Discuss symptoms and prognosis of Salmonella typhi infection
Definition
found only in humans, fever, diarrhea, rose spots on abdomen
has potential to remain in gallbladder and cause a carrier state
Term
Shigella flexneri is associated with
Definition
Rieter's syndrome
Term
Discuss Yersinia enterocolitica
Definition
common in day care centers, causes mesenteric adenitis which mimics Crohn's disease or appendicitis
Term
classic triad of congenital toxoplasmosis
Definition
chorioretinitis, hydrocephalus, and intracranial calcification
Term
Key difference between falciparum and vivax
Definition
vivax/ovale - dormant in liver- need primaquine
falciparum- occlusion in cerebrum- coma, kidneys- renal failure, lungs- pulmonary edema
Term
Symptoms of Trichinella spiralis
Definition
myositis and periorbital edema
Term
bilateral acoustic schwannoma
Definition
NF2, cerebrellarpontine angle
Term
Cranial nerve responsible for eyelid opening
Definition
oculomotor, CN III
Term
anticancer drug that prevents breast cancer
Definition
tamoxifen and raloxifene
Term
which drug inhibits ribonucleotide reductase?
Definition
hydroxyurea
Term
What is the rate limiting step in purine synthesis?
Definition
glutamine PRPP aminotransferase
Term
Which structures perforate the diaphragm at these levels:
at T8: IVC
at T10: esophagus, vagus
at T12: aorta, thoracic duct, azygous vein
Definition
whatever
Term
Adverse effects of Salmeterol
Definition
tremor and arrhythmias
Term
Antidote for methylxanthine toxicity
Definition
B blockers
Term
Cyproheptadine (Drug Type, Use)
Definition
Antihistanime, appetite stimulant
Term
Promethazine (Drug Type, Use)
Definition
Antihistamine, N/V
Term
Chlorpheniramine (Drug Type, Use)
Definition
Antihistamine, OTC allergy/cold
Term
Hydroxyzine (Drug Type, Use)
Definition
Antihistamine, sedation, itching
Term
Meclizine (Drug Type, Use)
Definition
Antihistamine, Vertigo
Term
Which lung lobes does abestosis infect?
Definition
lower lobes, the other pneumoconioses affect upper lobes
Term
Most common cause of pneumonia in COPD exacerbation
Definition
H. influenzae
Term
Most common cause of pneumonia in neonates
Definition
Group B or E. coli
Term
Most common cause of pneumonia in children between 1 month and 1 year
Definition
RSV, most common viral cause
Term
What pneumonia stains with silver stain but not with Gram Stain?
Definition
Legionella Pneumophilia
Term
What is the infectious agent in an 80 year old man with pneumonia of Gram negative rods?
Definition
E. coli
Term
Location of exotoxin genes
Definition
plasmid or bacteriophage
Term
location of endotoxin
Definition
bacterial chromosome
Term
Heat stability of exotoxin compared to endotoxins
Definition
destroyed rapidly at 60 C except staph. enterotoxin
endotoxin- stable at 100 C for one hour
Term
What encodes the diphteria toxin?
Definition
B-prophage
Term
Compare Actinomyces with Nocardia
Definition
Nocardia is aerobic and acid fast
Actinomyces is anaerobic and not acid fast
Term
Obligate aerobes
Definition
Nocardia, Pseudomonas, TB, Bacillus
Term
Obligate anaerobes
Definition
Clostridium, Bacteroides, Actinomyces
Term
SNAP
Definition
sulfa- nocardia
actinomyces- penicillin
Term
Ampicillin toxicity
Definition
hypersensitivity, rash with mononucleosis, pseudomembranous colitis
Term
Methicillin toxicity
Definition
interstitial nephritis
Term
Empiric treatment for neonatal infection
Definition
ampicillin with gentamicin
Term
Which side of the brain is associated with creativity?
Definition
right side
Term
cephalosporin: bacteriostatic or bacteriocidal?
Definition
bacteriocidal
Term
PEcK
Definition
Proteus, E. coli, Klebsiella
1st generation cephalosporin + gram positives
Term
HEN PEcKs
Definition
H. influenzae, Enterobacter aerogenes, Neisseria, Proteus, E. coli, Klebsiella, Serratia
2nd generation cephalosporin
Term
LAME: bacteria not covered by cephalosporins
Definition
Listeria, Atypical pneumonias, MRSA, Enterococci
Term
Cephalosporin toxicities
Definition
Cross Hypersensitivity, disulfiram reaction with ehtanol, nephrotoxicity with aminoglycosides, vitamin K def.
Term
Aztreonam (MOA, Use, Toxicity)
Definition
binds PBPs, synergisitc with aminoglycosides
Gram Negatives only
mild GI upset, no cross sensitivity, used in renal insufficiency aslo
Term
what is imipenem always administered with?
Definition
cilistatin
Term
Vancomycin Toxicity
Definition
Nephrotoxicity, Ototoxicity, Thrombophlebitis, Red Man syndrome from histamine release
Term
broad spectrum for appendicitis
Definition
imipenem/cilastatin, meropenem
Term
What can lead to a falsely negative PPD test?
Definition
anergic- steroids, malnutrition, immunocompromised, sarcoidosis
Term
toxicity of dapsone
Definition
hemolysis and methemoglobinemia
G6PD def.
Term
Treatment for leprosy
Definition
dapsone, rifampin, clofazimine
Term
Which mycobacterium causes pulmonary TB-like symptoms in COPD patients?
Definition
M. kansaii
Term
Rifampin prophylaxis
Definition
meningococcal meningitis prophylaxis
Term
Tuberculosis prophylaxis
Definition
isoniazid
Term
The bulbis cordis gives rise to
Definition
the right ventricle and smooth parts of the left and right ventricle
Term
The left horn of the sinus venosus gives rise to
Definition
the coronary sinus
Term
The right horn of the SV gives rise to
Definition
the smooth part of the right atrium
Term
The right common cardinal vein and right anterior cardinal vein gives rise to
Definition
SVC
Term
Which germ layer gives rise to the retina?
Definition
neural ectoderm
Term
What germ layer gives rise to the spleen?
Definition
mesoderm
Term
Which congenital heart defects cause early cyanosis?
Definition
right-to-left shunts
Term
symptoms of MELAS syndrome
Definition
neuromuscular lesions, small infarcts in the occipital lobes bilaterally, ragged red muscle fibers, and lactic acidosis
Term
What does the sis proto oncogene encode for?
Definition
PDGF overexpression is seen in astrocytomas and osteosarcomas
Term
describe histidine degradation
Definition
FIGLU --> THF --> Glutamate --> TCA
Term
Which substrates of gluconeogenesis will the branched amino acids become?
Definition
valine and isoleucine --> succinyl CoA,
leucine --> acetyl CoA
Term
Compare N2O (poorly soluble gas) and halothane (highly soluble gas)
Definition
compared to halothane N20 needs a smaller amount to saturate the blood, has a rapid rise in tension of gas in the blood, rapid equilibration with the brain, and rapid onset of action
Term
Which muscle fibers are more affects in myotonic dystrophy?
Definition
Type I
Term
MOA of flutamide
Definition
androgen antagonist
Term
MOA of anastrozole
Definition
aromatase inhibitor (blocks estrogen production)
Term
Which receptor does the B subunit of diphtheria toxin bind to?>
Definition
heparin-binding epidermal growth factor receptor on cardiac and neural muscle cells
Term
Essential tremor (inheritance pattern, treatment)
Definition
autosomal dominant
propanolol
Term
Clinical use of benzotropine
Definition
treat tremor in Parkinson disease as well as counteract the extrapyramidal side effects of neuroleptic medications like haloperidol
Term
treatment for status epilepticus
Definition
benzodiazepine
Term
which structures lie posteriorly and anteriorly to the medial malleolus respectively?
Definition
p- posterior tibial artery, tibial nerve, and tendons of the flexor digitorum longus, flexor hallucis longus, and the tibialis posterior
a- saphenous nerve and great saphenous vein
Term
How are drugs used to treat inflammatory disorders of the bowel and skin metabolized in the liver?
Definition
methylation
Term
MOA of B blockers for glaucoma treatment
Definition
decreased aqueous humor production
Term
How do anticholinergic drugs cause glaucoma?
Definition
narrow angle glaucoma by narrowing the anterior hcamber and obstructing the trabecular meshwork
Term
Treatment for endometriosis
Definition
danazol- partial agonist at androgen receptors (progesterone antagonist) also used for hereditary angioedema
Term
Describe endometriosis
Definition
endometrial glands outside the uterus, chocolate cysts, pain during menstration and intercourse, normal sized uterus, infertility, injury to extra-endometrial structures are replaced be endometrial tissue which responds to estrogen resulting in bleeding- chocolate cysts, nodularity of uterosacral ligaments and fixed retroversion of the uterus
Term
What is the difference between a frameshift mutation and a nonsense mutation?
Definition
nonsense- substitution
frameshift- insertion or deletion
Term
What is a conservative mutation?
Definition
when one amino acid is replaced with a similar amino acid
Term
MOA of carbamazepine
Definition
inhibits neuronal high frequency sodium channels, reducing their ability to recover from inactivation
Term
Clinical uses for haloperidol
Definition
neuroleptic- schizophrenia, acute psychoses, acute maina, and Tourette syndrome
Term
Clinical uses fro propanolol
Definition
essential tremor, migraine prophylaxis, reduction of portal venous pressure to prevent variceal bleed
Term
True or false: hemophilias cause increased bleeding time?
Definition
false, only qualitative or quantitative platelet disorders cause an increased bleeding time (von Willebrands disease)
Term
TH1 and TH2 cells: which one is involved in Crohn's and which one in UC?
Definition
Th1- Crohns
Th2- UC
Term
From what molecule is beta endorphin derived from
Definition
POMC, endogenous opioids also play a role in endocrine and emotional function, as a result ACTH and MSH also have similar physiologic functions as endorphins
Term
Hurthle bodies, distinguished from benign adenomas by capsular or vascular invasion
Definition
follicular thyroid cancer
Term
Histology of anaplastic thyroid cancer
Definition
large multinucleated osteoclast-like cells
Term
Describe the borders and common location of femoral hernia
Definition
medial border- pubic tubercle and lacunar ligament
lateral border- femoral vein
posterior border- Cooper's ligament of the pectinate
mostly occurs in the right leg
Term
Most common site of metastasis for choriocarcinoma
Definition
lungs, increased hCG
Term
Macroscopic examination of choriocarcinoma
Definition
soft and white with extensive areas of necrosis and hemorrhage
Term
which is associated with breast cancer? tamoxifen, raloxifene
Definition
tamoxifen, raloxifene has been shown to reduce breast cancer
Term
Where does lead bind to on enzymes?
Definition
sulfahydryl groups common on heme synthesis enzymes
Term
Classic triad of congenital toxoplasmosis
Definition
hydrocephalus, intracranial calcifications, and chorioretinitis
Term
Which infections are acquired intrapartum?
Definition
herpes, Chlamydia, Neisseria, GBS
Term
Which protein is absent in Dubin Johnson syndrome?
Definition
MRP2 multidrug resistance protein 2
Term
What causes deconjugation of bile acids?
Definition
bacteria remove glycine from taurine, results in lipid malabsorption
Term
describe a subfalacine herniation
Definition
cingulate gyrus herniates under the falx cerebri, potentially compressing the anterior cerebral artery
Term
describe tonsillar herniation
Definition
cerebellar tonsils displace through foramen magnum and compress the medulla
Term
Which type of cancer does abestos exposure most likely lead to ?
Definition
bronchogenic carcinoma not mesothelioma
Term
What nerve and artery are most likely to be injured with a humeral fracture?
Definition
radial nerve and deep brachial artery
Term
What are the malabsorptive complication of Crohn's disease?
Definition
oxalate kidney stones, anemia, hypoproteinemia, B12 and folate def., gallstones
Term
Describe Schwannomas (cell origin, tumor marker, histology)
Definition
neural crest
S-100
spindle cells w. oval nuclei
Term
Anti-depressant associated with hypertensive crisis following food intake
Definition
MAO inhibitors- phenelzine, tranylcypromide, isocarboxazid, selegiline
Term
treatment for serotonin syndrome toxicity
Definition
cyproheptadine- serotonin antagonist
Term
What do the crescents in RPGN consist of?
Definition
fibrin and plasma proteins
Term
What causes a child to perform Gower's sign?
Definition
proximal muscle weakness not fibrofatty replacement of calves
Term
Which kidney stones are radiolucent?
Definition
uric acid
Term
Magnesium ammonium phosphate crystals are also known as
Definition
struvite crystals
Term
Activation of which opioid receptors in the CNS is most likely to be responsible for apnea?
Definition
mu receptors
Term
Which atypical antipsychotic causes prolonged QT interval?
Definition
ziprasidone
Term
The virulence of cryptococcus neofromans is
Definition
its capsular polysaccharide
Term
Conformational change of adenylyl cyclase requires which nucleotide?
Definition
GDP
Term
which enzyme is deficient in McArdle's disease?
Definition
glycogen phosphorylase
Term
What is the primary mechanism of maintaining blood glucose in the fasting and starved state?
Definition
hepatic glycogenolysis (for 1 day in starved state), adipose release of FFA, muscle and liver, which shift fuel use from glucose to FFA, hepatic gluconeogenesis from peripheral tissue lactate and alanine, and from adipose tissue glycerol and propionyl CoA
Term
Which substance does H. pylori excrete in order to survive in the stomach?
Definition
urease- carbon dioxide and ammonia
Term
Antagonism of which receptors are responsible for causing neuroleptic malignant syndrome?
Definition
D2 receptors
Term
Antagonism of which receptors are responsible for causing neuroleptic malignant syndrome?
Definition
D2 receptors
Term
Where does renal cell carcinoma origniate?
Definition
renal tubular cells
Term
abrupt onset of hypertension in a patient younger than 20 or older than 50, and depressed serum K levels
Definition
hyperaldosteronism
Term
What category of blood pressure medications is preferred in the treatment of aortic dissection?
Definition
B blockers
Term
What substances act on smooth muscle myosin light chain kinase?
Definition
calcium channel blockers --> calmodulin --> inhibition
epinephrine, prostaglandin --> increased cAMP --> inhibition
Term
Which antihypertensives should be avoided in patients with sulfa allergy?
Definition
loop and thiazide diuretics
Term
What artery supplies the right ventricle?
Definition
the acute marginal artery off the RCA
Term
Which cytokines promote smooth muscle cell migration?
Definition
PDGF and TGF-B
Term
What are the most common locations of atherosclerosis?
Definition
abdominal aorta > coronary artery > popliteal artery > carotid artery
Term
What is Monckeberg arteriosclerosis?
Definition
benign calcification esp. in media of radial and ulnar arteries, pipestem arteries
Term
What is arteriolosclerosis?
Definition
hyaline thickening of small arteries due to chronic hypertension or diabetes. onion skinning malignant hypertension
Term
Where does ezetimibe work?
Definition
prevent cholesterol reabsorption at small instestine brush border; doesn't affect vitamin absorption
Term
MOA of fibrates
Definition
upregulate LPL --> increased TG clearance
Term
What amino acid is a precursor to porphyrin/heme?
Definition
glycine
Term
Fick principle
Definition
CO= rate of O2 consumption/ arterial venous O2 difference
Term
Nerve damaged in loss of forearm pronation
Definition
median
Term
nerve damaged in loss of arm abduction
Definition
axillary
Term
nerve damaged in weak lateral rotation of arm
Definition
suprascapular
Term
artery running with axillary nerve
Definition
posterior circumflex
Term
artery running with radial nerve
Definition
deep brachial artery
Term
which exotoxin works by activating Gs?
Definition
cholera
Term
which exotoxin works by disabling Gi?
Definition
pertussis
Term
which exotoxin works has an adenylate cyclase, bypassing G protein involvement?
Definition
anthrax
Term
What portion of the thalamus relays infomation from the cerebellum (dentate nucleus) and basal ganglia to the motor cortex?
Definition
ventral lateral
Term
What portion of the thalamus relays information from the mamillothalamic tract to the cingulate gyrus?
Definition
anterior nucleus
Term
What portion of the thalamus integrates visual, auditory, and somesthetic input?
Definition
Pulvinar nucleus
Term
Which part of the thalamus results in memory loss if destroyed?
Definition
medial dorsal nucleus
Term
Which portion of the brain is responsible for delayed gratification?
Definition
prefrontal cortex
Term
What weak opioid is commonly used in chronic pain control prior to prescribing stronger opioids?
Definition
tramadol
Term
What is the treatment for overly intoxication with benzodiazepines?
Definition
flumazenil
Term
What is the mechanism of action of sumatriptan?
Definition
serotonin agonist
Term
What are the containdications to sumatriptan use>?
Definition
CAD, Prinzmetal Angina, pregnancy
Term
What is the usual treatment for migraine headaches?
Definition
opioids
Term
What would you suspect as a cause of headache in a patient using topical retinoic acid for acne?
Definition
vit A toxicity --> pseudotumor cerebri
Term
Which primary brain tumor fits the following description?
a/ pseudopalisading necrosis
b/ psammoma bodies
c/ perivascular pseudorosettes
d/ Homer-Wright pseudorosettes
Definition
a/ glioblastoma
b/ meningioma
c/ ependymoma
d/ medulloblastoma
Term
What fundamental problem creates Potter syndrome?
Definition
bilateral renal agenesis from malformation of the ureteric bud
Term
diuretic used in patients with sulfa allergies
Definition
ethacrynic acid
Term
a teenager presents with nephrotic syndrome and hearing loss. What is the disease?
Definition
Alport syndrome
Term
Which pathology is associated with waxy casts in the urine?
Definition
end stage renal disease
Term
Which pathology is associated with neuropathy and AV nodal block?
Definition
Lyme disease
Term
Which pathology is associated with painless jaundice?
Definition
pancreatitis
Term
treatment of cystine kidney stones
Definition
alkalinization of the urine
Term
Histologic appearance of renal cell carcinoma
Definition
thyroidization of kidney
Term
Which Gram - organism causes corneal infections in contact wearers?
Definition
Pseudomonas
Term
which drugs have ototoxicity and nephrotoxicity as side effects?
Definition
aminoglycosides, vancomycin, loop diuretics, cisplatin
Term
What are the clinical uses for tetracyclines?
Definition
V. cholera, acne, chlamydia, ureaplasma, mycoplama, tularemia, h. pylori, borrelia, rickettsia
Term
Which tetracycline shoudl be used for patients with reanl failure?
Definition
doxycycline, fecally eliminated
Term
What should you never take with tetracyclines? What are teh side-effects of tetracyclines?
Definition
milk, iron, antacids, divalent cations inhibit absorption
GI distress, discoloration of teeth, inhibits bone growth in children
Term
What is the most common cause of non-adherence in macrolide use>?
Definition
GI discomfort
Term
Which antibiotic causes cholestatic hepatitis?
Definition
azithromycin
Term
What is the clinical use and side-effects of chloramphenicol?
Definition
meningitis
Term
Name two streptogramins
Definition
quinupristin/ dalfopristin
Term
What causes gray man syndrome?
Definition
amiodarone
Term
Which antifungal deposits in keratin-containing tissues?
Definition
griseofulvin
Term
Describe HHV-6
Definition
roseola, exanthem subitem, high fevers for several days (febrile seizures) that breaks, onset of diffuse rash,
Term
Describe HHV-7
Definition
all humans infected by age of 5, rash similar to roseola-- not as severe
Term
Which HPV serotypes cause squamous cell carcinoma? verrucae?
Definition
16 and 18
6 and 11
Term
Downey cells
Definition
EBV
Term
Virus associated with brassy cough?
Definition
RSV
Term
Viral causes of aspetic meningitis
Definition
enterovirus, echovirus, coxsackievirus
Term
drug class for Lyme disease or Rocky Mountain spotted fever
Definition
Tetracyclines
Term
Treatment for Gram negative rods in patients with renal insufficiency
Definition
aztreonam
Term
BIG GUN (effective v. G + cocci, G - rods, and anaerobes)
Definition
meropenem, iimipenem with cilastatin
Term
used as solo prophylaxis against TB
Definition
isoniazid
Term
All viruses are haploid except ______ which is diploid
Definition
retrovirus
Term
which DNA virus replicates in the cytoplasm?
Definition
poxvirus
Term
which RNA virus replicates in the nucleus?
Definition
influenza and retrovirus
Term
which virus acquires its envelope from the nuclear membrane>
Definition
herpesvirus
Term
Naked CPR and PAPP smear
Definition
calicivirus
picornavirus
reovirus
parvirus
adenovirus
papillomavirus
polyomavirus
Term
Which DNA virus is not icosahedral?
Definition
poxvirus
Term
which DNA virus carries its own DNA dependent RNA polymerase? RNA polymerase DNA polymerase?
Definition
pox
hepadnavirus
Term
Name that glomerular disease
IF: granular pattern of immune complex deposition; LM: diffuse capillary thickening
Definition
membranous GN
Term
IF: granular pattern of immune complex deposition; LM: hypercellular glomeruli
Definition
Acute post-streptococcal GN
Term
Name that glomerular disease
IF: linear pattern of immune complex deposition
Definition
Goodpastures
Term
Name that glomerular disease
EM: spiking of the GBM due to electron dense subepithelial deposits
Definition
membranous GN
Term
Strawberry cervix
Definition
Trichomonas
Term
signet ring cells in the ovary
Definition
krukenburg tumor
Term
signet ring in RBCs
Definition
malaria
Term
Owl's eye protozoan
Definition
Giardia lambia
Term
pigmented hamartomas in the iris
Definition
neurofibromatosis
Term
No milk production in the postpartum period
Definition
Sheehan's syndrome
Term
High pH and discharge
Definition
Gardenella, Trichomonas
Term
Low pH and vaginal discharge
Definition
Candida, physiologic
Term
Menorrhagia with enlarged uterus and no pelvic pain
Definition
leiomyoma
Term
Uterine pathology with definitive diagnosis and treatment is by laprascopy
Definition
endometriosis
Term
inner layer of chorionic villi, makes cells, sac, amnion
Definition
cytotrophoblast
Term
outer layer of chorionic villi, secretes B-hCG
Definition
synctiotrophoblasts
Term
What prenatal ultrasound finding is a clue that the fetus may have Down Syndrome?
Definition
nuchal finding
Term
Describe Williams syndrome
Definition
elfin facies, mental retardation, hypercalcemia (increased sensitity to Vit D), well-developed verbal skills, extreme friendliness, cardiovascular problems
chromosome 7
Term
What developmental structure removes nitrogenous waste from fetal bladder?
Definition
urachus
Term
What developmental structure forms is a fetal placental structure that secretes hCG?
Definition
synctiotrophoblasts
Term
Epidemiology of insomnia
Definition
worsens with age, more common in women
Term
Buspirone (MOA Use and adverse effects)
Definition
generalized anxiety but not panic disorders
serotonin agonist, dopamine antagonist
hypothermia,increased prolactin and growth hormone, headaches
Term
Which barbituates cause laryngospasm
Definition
methohexital and thiopental
Term
What are the withdraw symptoms of barbituates?
Definition
tremors, anxiety, cardiac arrest
Term
Choral Hydrate (MOA, clinical use, adverse effects)
Definition
ACh derivative
hypnotic
unpleasant taste, epigastric distress
Term
In which patients are barbituates contrindicated?
Definition
patients with porphyrias, increased porphyrin synthesis
Term
Which drug is used for alcohol dependence?
Definition
acamprosate
Term
Which bacteria is associated with rheumatic heart disease?
Definition
Group A Strep
Term
MOA of cyclosporin
Definition
binds cyclophilin which inhibits calcineurin --> less activation of NFAT --> less IL-2
Term
Besides gout, what else is allopurinol used for?
Definition
leukemia, to prvent tumor lysis-associated urate nephropathy
Term
MOA of sulfonamides
Definition
PABA antimetabolite, which inhibits dihydropteroate synthetase needed to make dihydrofolic acid in bacterial cells
Term
Side effects of cimetidine toxicity
Definition
P450 inhibitor, antiadrogenic effects (prolactin release, gynecomastia, impotence, decreased libido); can cross BBB (dizziness, confusion, headache) and placenta. Both cimetidine and ranitidine decrease renal excretion of creatinine
Term
Treatment for T. gondii
Definition
sulfadialyzine, pyramethamine (TMP-SMX)
Term
Treatments for cryptococcus in AIDS pts.
Definition
flucytosine and amphotericin
fluconazole
Term
MOA of flucytosine
Definition
inhibits DNA synthesis by conversion to 5-fluorouracil by cytosine deaminase
Term
Adverse effects of bisphosphonates
Definition
corrosive esophagitis, osteonecrosis of the jaw
Term
Which cerebral artery has caudaul/tonsillar loops?
Definition
PICA
Term
What is the impairment in Friedrich's ataxia?
Definition
mitochondrial functioning, especially in the spinal cord
Term
Carney's triad
Definition
GIST, paraganglioma, pulmonary chondroma
Term
teratogenic effect of ACE-I
Definition
Potter's syndrome
Term
thyroid gland pathology with non-caseating granulomas
Definition
subacute thyroiditis, de Quervain's (hypothyroidism, painful, increased ESR, jaw pain)
Term
MOA of baclofen
Definition
GABAb agonist- muscle relaxant (hiccups), prevents hyerthermia in ectasy toxicity
Baclofen is primarily used for the treatment of spastic movement disorders, especially in instances of spinal cord injury, cerebral palsy, and multiple sclerosis. Its use in people with stroke or Parkinson disease is not recommended.
Term
MOA of ANP
Definition
generalized vasorelaxation, constricts efferent arteriole and dilates afferent arteriole --> increased GFR and Na filtration without compensatory reabsorption in the distal nephron (aldosterone antagonist)
Term
Ploidy and number of chromosomes in spermatogonia
Definition
diploid
2N
Term
ploidy and number of chromosomes for primary spermatocyte
Definition
diploid 4N
Term
ploidy and number of chromosomes for secondary spermatocytes
Definition
haploid 2N
Term
ploidy and number of chromosomes for spermatids
Definition
haploid N
Term
Antidote for cyanide poisoning
Definition
amyl nitrate
Term
Drugs used for reversal of nondepolarizing neuromuscular blocking drugs
Definition
acetylcholinesterase inhbitors (possibly with atropine to prevent muscarinic side effects of acetylcholinesterase inhibitors)
Term
Describe the transmission of Toxocara canis
Definition
food contaminated with eggs; causes granulomas (if in retina --> blindness) and visceral larva migrans
Term
What component of the microbe is responsible for the organism's shape and protects against osmotic pressure?
Definition
peptidoglycan
Term
What component of the microbe is responsible for inducing IL-1 and TNF-a?
Definition
Lipotechoic acid and Lipid A
Term
What is the antigen in the lipid A molecule?
Definition
polysaccharide
Term
Most common location for malignant breast tumors
Definition
upper outer quadrant of the breast
Term
What is Paget's disease of the nipple associated with?
Definition
underlying ductal carcinoma
Term
What are the bacterial toxins encoded in a lysogenic, specialized phage:
Definition
A- ShigA-like toxin
B- Botulinum toxin
C- Cholera toxin
D- Diphtheria toxin
E- Erythrogenic toxin in GAS
Term
Creatinine clearance estimates
Definition
GFR
Term
PAH clearance estimates
Definition
RPF
Term
MOA of methacholine
Definition
cholinergic antagonist, diagnostic testing for asthma
Term
contents of cryoprecipitate
Definition
fibrinogen, factor VIII, factor XIII
Term
MOA of isoproterenol
Definition
B1 agonist
Term
Describe McCune Albright syndrome
Definition
polyostotic fibrous dysplasia characterized by multiple unilateral bone lesions associated iwth endocrine abnormalities (precocious puberty) and cafe au lait spots
Term
Name four Type IV hypersensitivity reactions
Definition
Type 1 DM, MS, Guillain Barre, Hashimoto's thyroiditis
Term
C. botulinum disease transmission in adults and children
Definition
adults- ingestion of preformed toxin
children- ingestion of bacterial spores in honey
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