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Drugs Exam 2
lipid-lowering agents, antacids, GI drugs, anti-inflammatory drugs, etc.
170
Pharmacology
Professional
02/14/2012

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Term
inhibitors of HMG-CoA reductase, reduce LDL levels by increasing hepatic uptake of LDL, VLDL, and remnants; reduce susceptibility of lipoproteins to oxidation; given at night for maximal effect; have relatively short half-lives
Definition
statins
Term
rhabdomyolysis (requires UA for myoglobin), hepatotoxicity, neuropathy, mild GI symptoms, HA, rash, insomnia
Definition
adverse effects of statins
Term
hepatotoxicity, pregnancy/nursing mothers, drug interactions w/ coumarin and gemfibrozil
Definition
contraindications of statins
Term
cationic polymers that bind anionic bile acids in the intestinal lumen, activate hepative uptake of LDL to cause fall in plasma LDL; for use only where LDL is elevated; reduce LDL 10-20%; raise HDL 3-5%; reduce major coronary events and coronary heart disease mortality; side effects include increased TG levels and GI distress
Definition
bile acid sequestrants
Term
hypertriglyceridemia
Definition
contraindications of bile sequestrants
Term
blocks intestinal absorption of cholesterol by inhibiting NPC1L1 protein; inhibits cholesterol absorption by ~55%; reduces LDL ~18%
Definition
ezetimibe
Term
decrease synthesis of VLDL; increase HDL; have complex mechanism of action involving PPARalpha agonism and altered gene expression; 90% absorbed w/ fast plasma peak concentration; >95% albumin bound; increase ApoA1 and 2; decrease ApoC3; require incredible fluid consumption with medication
Definition
fibric acids
Term
myalgias, rhabdomyolysis, increased incidence of gallstones, increased ALT/AST, GI distress
Definition
adverse effects of fibrates/fibric acids
Term
increased rhabdomyolysis w/ statin drugs, severe renal or hepatic disease; interact w/ warfarin to cause increased bleeding; interact w/ cyclosporine to increase cyclosporine clearance and cause acute transplant rejection
Definition
contraindications of fibrates
Term
reduces VLDL and LDL w/o effect on synthesis of cholesterol or excretion of bile acids; most effective agent for raising HDL (30-40%); requires 2g dose and has short half-life
Definition
nicotinic acid
Term
first choice therapy for heterozygous familial hypercholesterolemia; acid-neutralizing effect cancels GI upset
Definition
niacin + resin combination
Term
has maximum effectiveness for combo therapy
Definition
niacin + resin + statin
Term
more effective in combo but increase incidence of gallstones
Definition
niacin + gemfibrozil
Term
statin + bile acid sequestrants for lipid-lowering; statin + cholesterol absorption inhibitor (Vytorin)
Definition
"safer" combinations
Term
considered "riskier" combo, for combined dyslipidemias, has greater potential for myopathies
Definition
statin + fibric acid
Term
for combined dyslipidemia, increase risk of myopathy, considered "riskier"
Definition
statin + niacin
Term
"riskier" combo, used for combined dyslipidemia
Definition
statin + niacin + fibric acid
Term
promote healing of gastric ulcers, treat GERD and hypersecretory (zollinger-ellison syndrome), also to reduce risk of duodenal ulcer recurrence associated w/ H. pylori; exist as prodrugs, enter parietal cells and accumulate w/ canaliculi; bind irreversibly with the sulfhydryl groups on the pump and force their re-synthesis
Definition
PPIs
Term
made into "delayed release" oral dosage forms by being gastric-resistant; elimination half life is 1-2 hrs but duration of action is 24-48 hrs; metabolized by CYP2C19 and CYP3A4; variants of CYP2C19 can have poor metabolism of this class; hepatic disease reduces clearance while renal does not; requires several doses to achieve maximum suppression (2-5 days to suppress 70%)
Definition
pharmacokinetics of PPIs
Term
do not give with acid-suppressing medications; hypergastrinemia in 5-10% of users; decreased absorption of Vit B12 (questionable); inhibition of CYP enzymes increases half life of other drugs
Definition
adverse effects/contraindications of PPIs
Term
reversibly compete w/ histamine for binding to H2 receptors on the basolateral membrane of parietal cells; suppress basal acid secretion; effects are dose related; examples: cimetidine, ranitidine, famotidine, nizatidine
Definition
H2 receptor antagonists
Term
gynecomastia and impotence in males (inhibited metabolism of estrogen at CYP); increased half life of other drugs using CYPs; tolerance possibly due to secondary hypergastrinemia; acid rebound requires terminal dosage to be tapered
Definition
negative effects of H2 receptor antagonists
Term
synthetic analog of PGE1; binds to EP3 receptors on parietal cells and inhibits acid secretion; stimulates secretion of mucin and bicarbonate; increases mucosal blood flow
Definition
misoprostol
Term
undergoes extensive first-pass metabolism to deesterified acid; food and antacids delay absorption; effective w/in 30 min and peak at 60-90; duration = 3 hrs; renal elimination w/ half life = 20-40 min; requires frequent dosing
Definition
pharmacokinetics of misoprostol
Term
diarrhea (30%), exacerbation of IBD, abortifacent
Definition
adverse effects of misoprostol
Term
sulfated polysaccharide w/ aluminum hydroxide; cross-linking in acidic pH yields sticky polymer that adheres to mucosa and ulcerated surfaces; not used for peptic ulcer; used in inflammatory conditions that do not respond well to PPIS and also stress ulcers; adverse effects: affect gastric absorption of drugs and can cause constipation (2%)
Definition
sucralfate
Term
neutralize acid but do not inhibit secretion; raise gastric pH to 3.5; duration of action is short and determined by acid-combining ability and length of stay in stomach
Definition
dynamics and kinetics of antacids
Term
highly effective and inexpensive antacid; has short duration of action, delivers 12 mEq of sodium/gram, causes alkalosis w/ excessive use, and produces CO2
Definition
sodium bicarbonate
Term
has rapid onset and long duration for drug class, provides calcium; causes local (constipation, acid rebound, gas) and systemic (elevated plasma calcium, alkalosis) effects
Definition
calcium carbonate
Term
does not form gas; adverse effects include: diarrhea, increase plasma magnesium in patients w/ altered kidney function, and can lead to CNS toxicity
Definition
magnesium as antacid
Term
additional class of antacid; limited by constipation, neurotoxicity due to Al- exposure w/ chronic renal disease, myopathy, reduced phosphate reabsorption from gut, ultimately weakens bone by draining Ca
Definition
aluminum
Term
drug effectively neutralizes acid w/ fewer side effects by canceling constipation and diarrhea; GI effects are actually diminished but not zero; exposure to 2 cations becomes problem w/ renal dysfunction
Definition
magnesium-aluminum combo
Term
particle size determines efficacy; tablets are less effective than liquid; cause enhanced dissolution of weak bases and enteric coatings of capsules; decrease absorption of penicillin/tetracycline; alter urinary excretion of drugs by altering pH
Definition
therapeutic considerations of antacids
Term
either: 1) PPI/H2 antagonist + amoxicillin + clarithromycin/metronidazole or 2) PPI + tetracycline + bismuth sulfate + metronidazole; requires 7 day course
Definition
treatment of H. pylori infection
Term
enhance coordinated GI motility and transit of material in the GI tract; not direct stimulators of smooth muscle but rather influence activation of innervation to the gut (increase contractility); 2 classes currently used include dopamine receptor antagonists and motilin-mimetics
Definition
prokinetic drugs
Term
considered prokinetic drug, not available in US, D2R antagonist, enhances Ach release by antagonizing inhibitory effect of dopamine on cholinergic nerves to GI muscle; inhibits emesis via CTZ (in CNS) and in the stomach; no extrapyramidal effects (does not cross BBB well), may enhance prolactin release; used for gastroparesis and N/V from dysmotility
Definition
domperidone
Term
increases tone of lower esophageal sphincter and antral/small intestine contractions, facilitates gastric emptying, has no effect on lower GI motility; considered D2R antagonist and mixed 5HT3R antagonist/5HT4R agonist; used for gastroparesis, postoperative ileus, and N/V caused by dysmotility
Definition
metoclopramide
Term
extrapyramidal effects by inhibition of D2 receptors in CNS, tardive dyskinesia
Definition
adverse effects of metoclopramide
Term
acts like peptide that enhances gastric emptying; erythromycin is example; improves diabetic gastroparesis; no significant effect on lower GI; can enhance small bowel motility in ileus w/ high dose; tolerance can develop
Definition
motilin-mimetic drug
Term
target chemoreceptor trigger zone (5HT-3R, D2R, and opioid Rs) and solitary tract nucleus (histamine Rs, AchR, and 5HT-3R); classes include: H1 anti-histamines, metoclopramide, phenothiazines, ondonsetron, marijuana, and glucocorticoids
Definition
anti-emetic drugs
Term
target H1 receptor, include: diphenhydrinate, diphenhydramine, meclizine, and promethazine; depress labyrinth excitability at brainstem, good for motion sickness; adverse effects involve CNS depression
Definition
anti-histamines
Term
blocks 5HT3Rs, used for N/V from chemo/post-op/radiation; eliminated by liver w/ half-life at 6hrs; anti-emetic effect persists after drug is eliminated; adverse effects: allergic rxn, constipation, diarrhea, fever, HA (effects not common)
Definition
ondonsetron
Term
synthetic or natural delta-9-tetrahydrocannabinol, stimulates receptors at or around emesis center (CB1R), highly lipid soluble, readily absorbed PO; has extensive first-pass metabolism so bioavailability ~10-20%; essentially 100% hepatic metabolism; highly bound to plasma protein; large volume of distribution; used for emesis and stimulation of appetite in cachexic pts; adverse effects: central sympathomimetic, "highs," paranoia, abstinence syndrome
Definition
dronabinol
Term
mechanism not clear; adjuncts for nausea in cancer pts, suppress inflammation and prostaglandin production
Definition
glucocorticoids as anti-emetics
Term
anti-diarrheal drugs, absorb water, include bulk-forming agents like carboxymethylcellulose/psyllium/kaolin/attapulgite/kaolin-pectin and bismuth
Definition
intraluminal agents
Term
anti-diarrheals, slow motility and/or secretion; include opioids such as loperamide, diphenoxylate, and difenoxin
Definition
antimotility/antisecretory agents
Term
forms oxychloride and salicylic acid in stomach acid; compound travels through intestine while SA is absorbed (reduces cramps?); thought to be anti-secretory, anti-inflammatory, and antibacterial; used for traveler's diarrhea and H. pylori combo tx; known to blacken stool and tongue
Definition
bismuth
Term
decrease intestinal motility through mu R, decrease intestinal secretion through delta R, decrease intestinal absorption through mu and delta Rs; include camphorated opium tincture and laudanum as older versions; current ones are loperamide, diphenoxylate, and difenoxin
Definition
opioids as anti-motility drugs
Term
acts at mu R, 50 X more potent than morphine against diarrhea, poor penetration of CNS, OTC use for no more than 48 hours; can cause CNS depression in OD; use caution in children due to CNS sensitivity; do not use w/ active inflammatory disease of colon
Definition
loperamide
Term
chemical relatives of meperidine; second is active metabolite of first; not as potent as loperamide and can cause CNS effects; have abuse potential
Definition
diphenoxylate and difenoxin
Term
drugs that increase secretion of fluid, decrease absorption of fluid, and increase osmolality in the colon
Definition
laxatives
Term
include anthraquinones, diphenylmethanes, castor oil, and dioctyl sodium succinate
Definition
agents increasing secretion
Term
made up of aloe, rhubarb, cascara segrada, and senna; effective in 8-12 hours; activated in colon; increase fluid secretion; often cause cramps and may get into breastmilk; cause "lazy bowel syndrome" with abuse
Definition
anthraquinones
Term
phenolphthalein (withdrawn, carcinogenic) and bisacodyl; can cause inflammation of bowel
Definition
diphenylmethanes
Term
acts as stool softener; surfactant, stimulates secretions; marginally useful in constipation but widely used
Definition
dioctyl sodium succinate
Term
decreases absorption of fluid, lubricates lumen of GI tract; effective in short-term use; adverse effects in long-term use include: inflammation from systemic absorption, aspiration PNA, decreased absorption of fat-soluble vitamins, and leakage
Definition
mineral oil
Term
include bran, methylcellulose, psyllium, and agar; not digested and therefore not absorbed; swell in presence of water which stimulates peristalsis; no cramping/lazy bowel/dependence; impaction possible
Definition
fiber and hydrophilic colloids
Term
increases osmolality, rapid onset, draws fluid from ECF which fills the gut and stimulates peristalsis, can be enemas
Definition
saline (w/ magnesium sulfate, milk of magnesia, etc)
Term
increases osmolality, hydrolyzed in gut to organic acids
Definition
lactulose
Term
made up of long-chain PEGs, isotonically balanced, widely used for colon cleansing before GI procedures, patients must drink 4 liters of solution over 3-4 hours
Definition
PEG electrolyte solutions
Term
inhibition or activation of gene expression, blockade of intracellullar signaling, receptor antagonism, chemical neutralization, co-stimulation modulation, blockade of synthesis, diminish release, and inhibit immune response
Definition
drug strategies for suppressing immunity/inflammation
Term
used with other agents to prevent/treat transplant rejection (ex: high doses of methylprednisolone IV for acute transplant rejection), effective in GVHD, used in autoimmune dxs, extensive long-term use limited by toxicity
Definition
glucocorticoids
Term
inhibitor of T-cell mediated immunity, binds to cyclophilin and inhibits production of IL-2 (calcineurin is inactive and cannot phosphorylate nuclear receptors); used for transplants and in combination with glucocorticoids and antimetabolites; used in severe rheumatoid arthritis; problems: nephrotoxicity, HTN (~50% of renal tx pts), tremor, hyperlipidemia, and hirsutism
Definition
cyclosporine
Term
given PO or IV, oral absorption is slow w/ low bioavailability; extensive drug interactions due to CYP3A use; cannot eat grapefruit!!!
Definition
pharmacokinetics of cyclosporine
Term
more potent immunosuppressant; binds to FKBP; metabolized by CYP3A; used for transplant and rescue therapy in rejection episodes; problems: nephrotoxicity, neurotoxicity, etc; requires therapeutic drug monitoring
Definition
tacrolimus
Term
binds to FKBP but does not inhibit calcineurin; blocks IL-2 receptor signaling and arrests cell division; side effects: hyperlipidemia, leukopenia, and thrombocytopenia; used for prophylaxis in transplantation and in pts with high risk for nephrotoxicity; consider drug interactions w/ CYP3A
Definition
sirolimus/rapamycin
Term
prodrug of purine analog mercaptopurine which inhibits gene translation; side effects: bone marrow suppression, susceptibility to infection, gout (altering purine levels!)
Definition
azathioprine
Term
first inhibits IMPDH (rate-limiting enzyme in guanosine formation) while second is prodrug w/ higher bioavailability; preferentially acts on lymphocytes due to IMPDH pathway for purine synthesis; used for transplant rejection w/ glucocorticoids and calcineurin inhibitors but NOT azathioprine; major side effects: vomiting, diarrhea, leukopenia, and increased risk for infection
Definition
mycophenolic acid and mycophenolic mofetil
Term
folate analog used as anticancer drug, in RA, and GVHD; has cytotoxic and anti-inflammatory activity
Definition
methotrexate
Term
polyclonal Abs from rabbit injected w/ thymocytes; Abs to T-cell antigens deplete circulating lymphocytes; used for induction of immunosuppression and acute renal rejection; can be used for withdrawal of calcineurin inhibitors; side effects: cytokine release syndrome (fever, HA, tremor, N/V, malaise, general weakness)
Definition
ATG
Term
mouse monoclonal Ab against human CD3; depletes T-cells; indicated for organ transplant rejection; major side effect is cytokine release syndrome; production of Abs to drug occurs in host; potentially fatal pulmonary edema, CV collapse, and arrhythmias occur
Definition
OKT3
Term
humanized anti-CD25 mouse monoclonal Abs; first given prophylactically for renal transplants and with other immunosuppressants; bind to IL-2 Rs on activated T-cells (second has higher affinity); side effects are infection and anaphylaxis
Definition
daclizumab/basiliximab
Term
human monoclonal Ab against B lymphocyte stimulator; side effects are infection, severe allergic reactions, and cardiac problems
Definition
belimumab
Term
CTLA-4 fusion protein; binds to B7-1 and B7-2 to prevent co-stimulation; used for RA; should not be used w/ TNFalpha inhibitors
Definition
abatacept
Term
congener of abatacept; increased affinity for B7 complexes
Definition
belatacept
Term
major endogenous steroid w/ glucocorticoid activity; hydroxyl at 11 position
Definition
cortisol
Term
have carbonyl bonds at 11 carbon so compounds inactive until metabolized by 11beta hydroxysteroid dehydrogenase
Definition
cortisone/prednisone
Term
4-6 times more potent than cortisol for anti-inflammatory activity; have low mineralocorticoid activity
Definition
prednisolone/methylprednisolone
Term
has higher mineralocorticoid activity; in glucocorticoid class
Definition
fludrocortisone
Term
greater than 18 times more potent than cortisol w/ no mineralocorticoid activity
Definition
dexamethasone
Term
prototypes used to treat asthma, have fewer systemic effects; include: fluticasone, beclomethasone, flunisolide, and triamcinolone; can cause hoarseness and oral candidiasis
Definition
inhaled glucocorticoids
Term
bind to Type 2 receptor and is transported to nucleus to bind with GREs; antagonize insulin action and promote gluconeogenesis; increase muscle catabolism; augments GH action on lipolysis (increase triglycerides); decrease inflammatory response; reduce cytokine release; reduce production of eicosanoids
Definition
mechanisms of action of glucocorticoids
Term
well-absorbed from GI tract; cortisol is highly bound to protein but synthetics are not; lipophilic compounds; metabolized by liver and extrahepatic enzymes; note: prednisone safe in pregnancy because fetal liver lacks 11b hydroxysteroid dehydrogenase
Definition
pharmacokinetics of glucocorticoids
Term
replacement therapy; anti-inflammatory and immune suppression (do not improve underlying disease); asthma treatment when inhaled; topical for psoriasis and dermatitis; depot injections for arthritis and gout
Definition
uses of glucocorticoids
Term
increased susceptibility to infection, increased glucose and diabetes, secondary hyperparathyroidism, osteoporosis, edema, suppression of linear bone growth in children, steroid psychosis, Cushing's syndrome, withdrawal "rebound," and myopathy
Definition
toxic side effects of glucocorticoids
Term
tend to have more systemic toxicity since they inhibit hepatic P450s; include: mitotane, aminoglutethimide, ketoconazole, metyrapone, and trilostane
Definition
drugs inhibiting steroid synthesis
Term
used as antineoplastic agent in adrenal tumors; toxic to adrenocortical cells
Definition
mitotane
Term
blocks cholesterol side chain cleavage; dose dependent GI and neuro side effects as well as rash; causes frank adrenal insufficiency
Definition
aminoglutethimide
Term
antifungal agent; primarily inhibits steroid 17a hydroxylase; most effective inhibitor of steroid biosynthesis in pts w/ Cushing's disease; major side effect is hepatic dysfunction
Definition
ketoconazole
Term
acts as mineralocorticoid antagonist
Definition
spironolactone
Term
albuterol, levalbuterol
Definition
short-acting B2 selective agonists for asthma
Term
salmeterol, formoteral, indacaterol
Definition
long-acting B2 agonists for asthma
Term
methylxanthine, used as maintenance therapy for asthma/COPD; not used as much unless pt has cardiac problems; relaxes smooth muscle, increases cAMP, and blocks adenosine A2 receptors; side effects: insomnia, agitation, tachycardia, tremor; can be used in status epilepticus
Definition
theophylline
Term
muscarinic R antagonist; quaternary so minimizes CNS effects; used in COPD and asthma w/ other bronchodilators; useful for pts that cannot take B2 agonists
Definition
ipratropium bromide
Term
glucocorticoid inhaled daily to suppress airway inflammation
Definition
beclomethasone diproprionate
Term
inhibitors of mast cell degranulation; stabilize mast cells by unknown mechanism; used by inhalation to prevent mild to moderate asthma attacks; used w/ glucocorticoids to prevent moderately severe asthma; do NOT relieve acute sxs
Definition
cromolyn/nedocromil
Term
act as leukotriene R antagonists; prevent actions of cysteinyl leukotrienes at CysLT1 Rs; given orally for prophylactic treatment of mild asthma; rare side effects: pulmonary infiltrates, neuropathy, skin rashes, and vasculitis (similar to Churg-Strauss syndrome)
Definition
montelukast, zafirlukast
Term
5-lipoxygenase inhibitor; inhibits formation of all LOX products; given orally for prophylaxis of mild asthma; can elevate liver enzymes in ~5% of pts
Definition
zileuton
Term
humanized monoclonal IgE Ab; binds to Fc domain of IgE so it cannot interact w/ R; administered IV or subQ every 2-4 weeks; reduces airway responsiveness and decreases need for other asthma drugs; concern for infection and pain at injection site
Definition
omalizumab
Term
inhibits phosphodiesterase 4; increases cAMP; administered for severe COPD; use limited by side effects (HA, N/V, acute pancreatitis, acute renal failure, a-fib)
Definition
roflumilast
Term
H1R antagonists; well-absorbed from GI tract; widely distributed to body (especially CNS); extensively metabolized; side effects: sedation, dizziness, lassitude, fatigue, nervousness, insomnia, tremor, loss of appetite, N/V, dryness of mouth, cough (anticholinergic responses), and hypersensitivity reactions; class includes diphenhydramine, chlropheniramine, pyrilamine, hydroxyzine, and doxepin
Definition
first generation antihistamines
Term
H1R antagonists; well-absorbed but do not distribute to CNS; metabolized by P450s and have drug interactions; side effects: no anticholinergic responses, minimal sedation, and drowsiness; include: cetirizine, loratadine, desloratadine, and fexofenadine
Definition
second generation antihistamines
Term
acute allergic reactions, reduce itching, diminish sxs of cold/flu; select few used for prophylaxis and treatment of motion sickness; diphenhydramine can reduce early Parkinson's symptoms; N/V; somnolence
Definition
therapeutic actions of antihistamines
Term
causes platelet aggregation, constriction of vascular smooth muscle in splanchnic/renal/pulmonary/cerebral vasculature, positive inotropic and chronotropic action, stimulates small intestine motility, inhibits stomach smooth muscle, sensitizes small-diameter sensory neurons, affects sleep/cognition/temp regulation/motor activity
Definition
5-hydroxytryptamine actions
Term
5HT1 R agonists, thought to have direct vasoconstrictor action on intracranial blood vessels and presynaptic inhibition on sensory neurons; class includes: sumatriptan, naratriptan, rizatriptan, zolmitriptan, and almotriptan; drugs of choice for migraine tx; not for long-term use; administered by injection, orally, or nose spray
Definition
triptans
Term
either agonists or antagonists at multiple receptors; have agonist action at 5HTR; side effects: nausea, vasoconstriction w/ ischemia, leg weakness, and muscle pain; contraindicated in pregnancy, CAD, PAD, liver/renal disease; class includes: ergotamine, dihydroergotamine, and methysergine
Definition
ergot alkaloids
Term
used for prophylaxis of migraines; long-term use can cause pts to develop retroperitoneal/cardiac/pulmonary fibrosis; do not give for more than 6 months
Definition
methysergine
Term
used as prophylactic for migraines; requires gradual increase in dosing; side effects: acute myopia, glaucoma, decreased sweating/hyperthermia, metabolic acidosis, cognitive dysfunction, psychiatric/behavioral disturbances, somnolence, and fatigue
Definition
topiramate
Term
synthetic PGE1, used to maintain maternal/fetal blood flow; possible role in impotence tx
Definition
alprostadil
Term
PGE1 analog approved to promote ulcer healing
Definition
misoprostol
Term
drug for parturition, prostin E2 synthetic, formulated as suppository
Definition
dinoprostone
Term
irreversibly inhibits COX isomers; used for pain relief, fever reduction, anti-inflammatory, and prophylactic risk reduction for MI by anti-platelet effects; has significant toxicity and poisoning potential; affects acid-base balance; not for use in: ulcer pts, those w/ allergies, pts w/ clotting dxs, pregnancy, gout, and viral infections in children/young adults
Definition
aspirin
Term
para-aminophenol derivative; weak anti-inflammatory agent; weak effects on platelets and no change in bleeding time; no uricosuric effects; no alterations in acid-base balance; minimal effects on GI; used for analgesia and antipyresis; risk for fatal hepatic necrosis w/ acute overdose; can cause skin rash and rarely leukopenia
Definition
acetaminophen
Term
antidote for acute acetaminophen toxicity; replenishes glutathione that metabolite has used up, prevents necrosis
Definition
acetylcysteine
Term
has marked anti-inflammatory action; not used much due to high toxicity; in indole and indene acetic acid class
Definition
indomethacin
Term
arylproprionic acid; fewer GI side effects for NSAID; requires more frequent dosing
Definition
ibuprofen
Term
arylproprionic acid; twice a day dosing
Definition
naproxen
Term
COX2 inhibitor; has limited adverse effects due to R selectivity; contraindicated in pts w/ sulfa sensitivity; reports of excessive GI bleeding/ulceration; removed from market due to potential cardiotoxicity
Definition
celecoxib
Term
Ab to TNFalpha, used for Crohn's disease and RA; reported to cause anaphylaxis or lupus-like reaction on rare occasions
Definition
infiximab
Term
Ab to TNFalpha; for RA, Crohn's, psoriasis, and ankylosing spondylitis
Definition
adalimumab
Term
Ab to TNFalpha; for RA, psoriatic arthritis, and ankylosing spondylitis
Definition
golimumab
Term
humanized monoclonal Ab to alpha4 integrin; used for Crohn's and relapsing MS
Definition
natalizumab
Term
construct of TNFalpha R binding site for RA, Crohn's
Definition
etanercept
Term
used in management of progressive RA that is unresponsive to other txs; can relieve pain and stiffness but do not arrest joint degeneration; side effects limit usage, include: metallic taste, stomatitis, diarrhea, abdominal pain/cramping, rash, dermatitis, thrombocytopenia, aplastic anemia, agranulocytosis, and acute tubular necrosis
Definition
gold compounds
Term
useful in relieving acute gout attacks; effective in prophylaxis; not uricosuric; inhibits migration of granulocytes to inflamed area; major side effects: N/V, diarrhea, abdominal pain; long-term use increases incidence of blood dyscrasias
Definition
colchicine
Term
increase clearance and excretion of uric acid by decreasing reabsorption; pt needs to drink lots of water to alkalinize the urine and prevent precipitation of uric acid in renal tubules
Definition
probenecid and sulfinpyrazone
Term
competitive antagonists of xanthine oxidase; reduce formation of uric acid
Definition
allopurinol and febuxostat
Term
broad term; substance that can produce morphine-like effects that are blocked by R antagonists; can be endogenous, naturally occuring, semisynthetic, and synthetic
Definition
opioid
Term
alkaloids in opium and their natural and semi-synthetic derivatives
Definition
opiate
Term
beta endorphin, dynorphin, and enkephalins
Definition
endogenous opioid peptides
Term
3 subtypes, act at G proteins to decrease adenylyl cyclase activity, open a subclass of K channels, and close Ca channels
Definition
opioid Rs
Term
analgesia, anti-tussive, treatment of diarrhea/dysentery, and special anesthesia/sedation
Definition
therapeutic actions of opioids
Term
agonist at mu opioid receptor, has some effect at kappa and delta; used for analgesia and cough suppression; many routes of administration; use caution in neonates and pts w/ chronic kidney dx; problems: resp depression, constipation, abuse potential, N/V (~40%), histamine release
Definition
morphine
Term
allows for slow rise in serum levels to avoid "rush" sensation; has prolonged effect; patient can independently control intake; less drug is needed to prevent recurrence of pain than to relieve it
Definition
controlled release formulation of morphine
Term
readily absorbed; significant first-pass metabolism; low bioavailability; delay absorption of other PO drugs; rapid distribution; onset/duration influenced by lipophilicity
Definition
opioid pharmacokinetics
Term
signs include: pinpoint pupils, resp depression, coma; accompanied by hypotension, hypoglycemia, and hypothermia
Definition
acute opioid toxicity
Term
agonist at mu opioid R; some effects at delta; more potent than morphine; used for analgesia (post-op, labor, chronic pain, anesthetic adjuvant); very lipid soluble; can be used as transdermal patch; problems: resp depression, constipation, abuse potential; HOWEVER no release of histamine, less vasodilation/orthostatic hypotension
Definition
fentanyl
Term
mu R agonist; rapid onset (1-1.5min); ester linkage susceptible to esterases and therefore very short half-life; analgesic for moderate to severe pain and anesthesia adjunct; problem is resp depression
Definition
remifentanil
Term
agonist at mu, some effects at others; metabolized to compound w/ antimuscarinic effects so pupils DILATE instead of constrict; not as frequently used due to unpredictable metabolism; problems: resp depression, constipation, abuse potential, seizure potential, antimuscarinic effects (negative inotropic action, tachycardia)
Definition
meperidine
Term
drug that is metabolized to morphine, very lipid soluble; not more potent but faster acting; produces sensations of warmth, taste, high, or intense pleasure; sedates; no clinical use
Definition
heroin
Term
agonist at mu; racemic mixture blocks NMDA Rs and monoaminergic reuptake transporters; binds extravascularly and is slowly released; long half-life; used for analgesia of difficult-to-treat pain and relief of opioid dependence; problems: resp depression, prolonged QT-based arrhythmias (rare); may be involved in as many as 1/3rd of all prescription opioid-related deaths!
Definition
methadone
Term
mixed agonist/antagonist; partial agonist at mu; antagonist at kappa; has long duration due to slow dissociation; used for analgesia for difficult-to-treat pain and opioid dependence; decreased severity of resp depression and constipation; RESISTANT to naloxone reversal; concern about abuse potential
Definition
buprenorphine
Term
mixed agonist/antagonist; agonist at kappa; antagonist at mu; used in analgesia of severe pain and pre-op medication; limited resp depression and constipation; increased HR and BP at high doses; dysphoria due to kappa R activity; combination w/ naloxone reduces misuse as injectable
Definition
pentazocine
Term
prodrug that is metabolized to morphine; agonist at mu w/ slight action at delta and kappa; produces less analgesia than morphine; used as analgesic, anti-tussive, and antidiarrheal; can cause constipation but resp depression is rarely a problem
Definition
codeine
Term
D-isomer of codeine analog but no activity at opioid Rs; NMDA R antagonist but also binds at other undetermined sites; used as anti-tussive; relatively safe at prescribed doses; OD: tachycardia, agitation, psychosis, seizure, ataxia, coma
Definition
dextromethorphan
Term
used for acute and chronic pain; active at all receptors but mostly mu; available in formulation w/ acetaminophen or NSAIDs and in slow-release; concern for abuse through injecting ground-up tablets
Definition
oxycodone
Term
antagonizes opioid action; used for opioid OD; given IV; formulated w/ buprenorphine and pentazocine to prevent abuse; watch for relapse due to short duration of action
Definition
naloxone
Term
antagonizes opioid action; give PO; long duration of action; reduces craving for alcohol in alcoholics; need much higher dosage to reverse buprenorphine OD
Definition
naltrexone
Term
orally active w/ many metabolites; weak MOR agonist; inhibits NE and serotonin reuptake; activates alpha adrenergic Rs; used for mild to moderate pain; has low risk of resp depression and abuse but associated w/ seizures and serotonin syndrome
Definition
tramadol
Term
rapidly acting anticoagulant; accelerates antithrombin 3 rxns; used for DVT, PE, acute arterial occlusion, a-fib, and prophylaxis (use lower doses); administered IV or intermittent injections; complications: bleeding, thrombocytopenia; closely monitor pts w/ high bleeding risk; potential allergy risk due to porcine source
Definition
heparin
Term
depolymerized heparin; limited approvals for hip and knee replacements; greater bioavailability subQ; longer half-life; does not require monitoring; contraindicated in pts w/ HIT
Definition
enoxaparin
Term
prevention of DVT in ortho pts and for tx of DVT and PE; synthetic polysaccharide; administered subQ; much less thrombocytopenia; contraindicated in renal dysfunction
Definition
fondaparinux
Term
polycationic protein that forms stable complex w/ heparin; rapidly reverses effects of heparin
Definition
protamine sulfate
Term
acts by inhibiting synthesis of factors 2, 7, 9, and 10 by blocking Vit. K epoxide reductase; slow onset of action; good for prophylaxis and treatment; complications: hemorrhage (requires close monitoring when starting and w/ heparin co-administration); drug-drug interactions by CYP; causes necrosis in pts w/ Protein C deficiency; never use in pregnancy and situations where hemorrhage potential is greater than clinical benefits; avoid use in uncontrolled alcohol/drug abuse or unsupervised dementia/psychosis
Definition
warfarin
Term
recombinant protein almost identical to natural peptide; IV administration; cleared renally; used in HIT; Abs may develop
Definition
lepirudin
Term
recombinant; subQ bid; prophylactic for post-op DVT in hip replacement
Definition
desirudin
Term
20 AA analog which is reversible inhibitor of thrombin R; IV administration for percutaneous coronary intervention for pts at risk of HIT
Definition
bivalirudin
Term
small molecule inhibitor of thrombin R; IV administration; metabolized in liver so OK FOR USE IN RENAL PTS; useful in HIT
Definition
argatroban
Term
first orally available DTI; indicated for stroke prevention in non-valvular a-fib; cleared by renal excretion; used in knee replacement
Definition
dabigatran
Term
HAVE NO KNOWN ANTIDOTE TO ACTION
Definition
hirudins as a class
Term
phosphodiesterase and adenose reuptake inhibitor; prevents degradation of cAMP to AMP and ultimately platelet activation; complication: HA
Definition
dipyridamole
Term
chimeric monoclonal Ab directed against human GP2b-GP3a; blocks receptor for fibrinogen; adjunct tx for MI prevention in stenting or angioplasty; not for use in pts w/ abnormal bleeding
Definition
abciximab
Term
synthetic peptide that blocks GP2b-GP3a in a reversible manner; used as adjunct tx to prevent MI in several scenarios; IV admin; short half-life and action (4-24hrs); NOT FOR USE W/ RENAL DYSFUNCTION
Definition
eptifibitide
Term
nonpeptide tyrosine analog; specific to GP2b-GP3a and blocks fibrinogen binding; NOT FOR USE W/ HEPATIC DYSFUNCTION
Definition
tirofiban
Term
first generation drug of class; restricted to tx of acute cerebral ischemia; antiplatelet action through ADP-R; adjunct tx to prevent stenting thrombosis; oral admin.; higher incidence of neutropenia/agranulocytosis
Definition
ticlopidine
Term
better tolerated; administered to pts w/ atherosclerotic vascular dx; prevention of MI in pts who cannot tolerate aspirin; contraindications: current pathological bleeding, CABG, prior TIA or stroke
Definition
clopidogrel
Term
more potent ADP-R inhibitor; increased risk of bleeding; oral admin.
Definition
prasugrel
Term
isolated from beta-hemolytic bacteria; activates tissue plasminogen; requires large loading dose; allergic rxn can occur; overwhelms homeostatic inhibitory controls; do not use w/ suspicion of intracranial bleed or recent heparin use
Definition
streptokinase
Term
recombinant t-PA; binds to fresh thrombi; poor activator of plasminogen in absence of fibrin-binding; increases conversion of plasminogen to plasmin
Definition
alteplase
Term
lysine analog; inhibitor of plasmin; treats toxicity/OD of streptokinase and alteplase
Definition
aminocaproic acid
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