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Microbiology Disease Portion
Diseases and their causing agents as well as other facts about them
243
Biology
Undergraduate 2
05/10/2009

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Term
Mucociliary Escalator
Definition
sticky mucus traps particles/ microorganisms and ciliated cells push trapped material up and out of the lungs, sinuses, middle ear, etc. This is then swallowed and microorganisms can be destroyed in the stomach.
Term
What can impair the mucociliary escalator?
Definition
alcohol, tobacco, narcotics, and viral infections
Term
Strep throat (V or B)
Definition
B and can be treated with antibiotics
Term
Caustive agent of Strep throat
Definition
Strepococcus pyogenes
Term
Symptoms and tell tale signs of strep throat
Definition
Symptoms - fever pain, difficulty swallowing, sore throat;
Tell tale sign - bright red spots on back of throat, pus in the back of the throat
Term
Complications of strep throat may cause
Definition
scarlet fever, glomerolonephritis, or rheumatic fever
Term
Mode of transmission of strep throat is
Definition
human to human; airbourne or contact
Term
Diphtheria (V or B)
Definition
B so it can be treated with antitoxin but hard to treat
Term
Causative agent of Diphtheria
Definition
Corynebacterium Diphtheriae
Term
Symptoms and tell tale signs of Diphtheria
Definition
Symptoms - Mild sore throat, progresses to fatigue, malaise, heart and kidney failure, leads to paralysis;
Tell tale sign - grey membrane that formes in the throat and tonsils, may clog and cause suffocation
Term
The toxin for Diphtheria (bacterial because LPS isn't involved!)
Definition
Powerful A-B exotoxin = Diphtheria toxin; bacteriophage that becomes virulent when this becomes a prophage because it is integrated into a chromosome. Called lysogenic conversion
Term
What does the A portion of the A-B Exotoxin do?
Definition
It is the toxin that kills the cell by shutting down protein synthesis within the cells
Term
What does the B portion of the A-B Exotoxin do?
Definition
It is the part that beings to receptors on cells...heart, kidney, nerves
Term
Mode of transmission of diphtheria
Definition
airbourne
Term
Prevention of Diphtheria
Definition
DPT vaccine
Term
Causative agent of the common cold
Definition
Rhinovirus
Term
Symptoms of the Rhinovirus
Definition
malaise, sore throat, runny nose, cough and hoarseness, nasal secretions shift, No fever unless secondary bacterial infection
Term
Mode of transmission of Rhinovirus
Definition
Aerosol droplets in nose, other secretions in body, takes a few virions to get sick, (PREVENTION IS HANDWASHING)
Term
Main importance for colds
Definition
damage respiratoy tract defenses and pave the way for more serious bacterial infections
Term
Causing agent of pneumococcal pneumonia (most common bacterial pnuemonia)
Definition
Stretococcus pneumoniae
Term
What kind of bacteria is Pneumonococcal pneumonia?
Definition
gram-positive diplococcus
Term
Symptoms and key symptom for Pneumococcal pneumonia
Definition
cough, fever, chest pain, sputum prduction; ONE SINGLE BODY SHAKING CHILL- professes to severe chest pain, sputum turns pink
Term
Prevention and treatment of pneumonococcal pneumonia
Definition
sensitive to antibiotics if caught early enough and there is a vaccine for infants
Term
Pneumonococcal pneumonia
Definition
Streptococcus pnuemoniae has a bacterial capusle.
Term
Pinkeye, earaches, and sinus infections
Definition
Haemophilus influenzae (no pus response, less swelling)/ Streptococcus pneumoniae (pus with swollen eyes)
Term
Causative agent of Klebsiella pneumonia
Definition
Klebsiella pneumoniae (gram-negative rod) a normal flora in small percentage of people.
Term
Symptoms and Key Symptom for Klebsiella pneumonia
Definition
like pneumococcal pneumonia, except repeated chills and sputum is RED and GELATINOUS - can cause death rapidly (50-80% die without treatment)
Term
Where is Klebsiella pneumonia a problem?
Definition
Hospitals and impaired...nosocomial infection *get at the hospital*
Term
Mycoplasma pneumonia
Definition
"walking pnuemonia"
Term
Symptoms of mycoplasma pneumonia
Definition
fever, headache, muscle pain, fatigue, DRY COUGH
Term
Treatment of mycoplasma pneumonia
Definition
difficult to treat (organism lacks cell wall)can't be treated with penicillin
Term
Who is more at risk for mycoplasma pneumonia
Definition
College age
Term
Causative agent of whooping cough
Definition
Bordetella pertussis (gram-negative rod)
Term
Tell tale sign of whooping cough
Definition
crazy cough (reflex is strong), vomiting, hemorrhaging in brains, collapsed lungs
Term
Whooping cough prevention
Definition
DPT vaccine (helps with the toxins)
Term
Causative agent for tuberculosis
Definition
Mycobacterium tuberculosis (acid-fast rod)
Term
Diagnosis of TB
Definition
PPD test...purified protein derived, skin test for hypersensitivity. If positive they do the X-ray
Term
Symptoms and tell tale signs of TB
Definition
progressive weight loss ("consumption"), night sweats, chronic cough with blood
Term
Prevention and Treatment
Definition
BCG vaccine, and Antibiotics for 6-12 mos. (depends on if they is a granuloma or not)
Term
Legionnaire's Disease causative agent
Definition
Legionella pneumophila (fastidious in lab) It's a gram-negative rod
Term
Transmission of Legionnaire's Disease
Definition
contracted by breathing contaminated water, NO human-to-human spread
Term
Symptoms of Legionnaire's Disease
Definition
chest pain, cough, blood in sputum
Term
Influenza Virus
Definition
Enveloped virus that causes an antigenic drift or antigenic shift
Term
Other names for Hantavirus Pulmonary Syndrome
Definition
4-corners virus, Sin Nombre virus
Term
How do you get Hantavirus?
Definition
Inhale dust containing feces, urine or saliva of infected rodents
Term
Hantavirus has...
Definition
no vaccine or treatment...just wear a mask
Term
RNA mixes and gets packaged...each place has a segment
Definition
Many new antigens - gene reassortment (antigenic shift)- SPANISH FLU
Term
What are the 3 Major Microbial Skin inhabitants
Definition
Diphtheroids (group of club-shaped bacteria that breaks down products in sweat) , Staphylococcus epidermidis (salt lovers that are aerobic) , and fungi
Term
What kinda Diphtheroids is there?
Definition
Propionibacterium acnes (grow in oily secretions of sebacious glands - FILL WITH OIL)
Term
Staphylococcus epidermidis
Definition
produce antimicrobial substances and compete for space/nutrients (take up space so bad bacteria can't take up space)
Term
What are the three fungi skin infections
Definition
Scaly face rash, Dandruff, Tinea versicolor (red bluish purple yeast cells, fillamentous form is disease causing)
Term
What is the causative agent of tinea versicolor?
Definition
Malassezia furfur
Term
How do hair follicles become infections
Definition
Starts as a pimple (folliculitis), then it becomes a boil (pus, WBC, dead cells = furuncle) Finally it becomes a carbuncle (bigger version that can spread)
Term
What is the causative agent of hair follicle infections?
Definition
Staphylococcus aureus (always in the nose, and then gets inside to start infection)
Term
Treatment of hair follice infections
Definition
surgical drainage, abscess and treated with antibiotics
Term
What is the causative agent of Scalded Skin syndrome?
Definition
Staphlococcus aureus (toxin-producing)
Term
What are the symptoms of Scalded Skin syndrome?
Definition
generalized redness, sloughing of the skin (20-100% of the body), skin becomes wrinkled and large blisters develop (epidermis and dermis seperate because of toxin)
Term
How is Scalded Skin transmitted?
Definition
human to human contact
Term
How do you prevent Scalded Skin?
Definition
Methicillin (MRSA) and isolation (because highly susceptible to Pseudomonas)
Term
What is the causative agent of Streptococcal impetigo?
Definition
Streptococcus pyogenes
Term
Transmission of Streptococcal impetigo
Definition
Enter through scratches
Term
Symptoms of Streptococcal impetigo
Definition
superficial skin infection, blisters that are crusty and with pus (Pyoderma = skin infection characterized by pus)
Term
Prevention and treatment of impetigo?
Definition
cleanliness and antibiotics
Term
What is the causative agent of Rocky Mountain Spotted Fever?
Definition
Rickettsia rickettsii spread by the wood tick (Zoonotic disease)
Term
What are the symptoms of RM spotted fever?
Definition
Starts with a headache and body aches, then becomes a rash, on the soles and palms, then up the legs and arms...bleeping from the nose and mouth and then shock happens if untreated (death is 20% if untreated.)
Term
Treatment and Prevention of RM spotted fever
Definition
avoid ticks, frequent tick-checks when in the woods; ANTIBIOTICS
Term
Causative agent of Lyme Disease
Definition
Borellia burgdorferi Spread by a deer tick
Term
What are the 3 stages of the Lyme Disease
Definition
1) Target shaped rash at bite site
2) 2-8 weeks later, problems with the heart and nervous system (electrical heart problems and paralysis)
3) Arthritis, joint pain, paralysis, depression
Term
Where and what does the spirochete of the Lyme Disease do?
Definition
it grows locally in cells, then enters blood stream and becomes systemic. Exaggerated immune response probably responsible for many of late symptoms
Term
Prevention of Lyme Disease
Definition
avoid ticks, spray self, wear protective clothing, tick checks
Term
What is the causative agent of chicken pox?
Definition
Varicella (chicken pox) Zoster (shingles) Virus (VZV)
Term
Transmission of chicken pox
Definition
respiratory route
Term
What are the symptoms of chicken pox?
Definition
mild in children - small red bumps that progress to small blisters that scab over.
Severe in older kids, pregnant women (may cause death)
Term
How does chicken pox in infect others
Definition
you breath in and it goes latent in the sensory nerves in the ganglion nuclei. The cytoplasm goes to the spine and survives as insidious DNA
Term
Shingles are...
Definition
more focused in one area...you can't get them without getting the chicken pox
Term
Rubeolla Virus is the causative agent of...
Definition
Measles
Term
Symptoms of measles are...
Definition
fever, running nose, fine red rash, face into the body, and THEN Koplik spots (white legions on the tongue)
Term
What are the complications of Measles?
Definition
pneumonia and encephalitis (brain damage, epilepsy, and deafness)
Term
What is Subacute Sclerosing Panencephalitis?
Definition
SSPE is a slow virus, the same virus that can take 2-10 years to develop infection. Death can occur after two years. Slow degeneration of brain (RARE!)
Term
How do you prevent Measles
Definition
Measles, Mumps, and Rubella vaccine
Term
What is the causative agent of Rubella or German Measles
Definition
Rubella virus (RNA)
Term
Transmission of measles and german measles
Definition
respiratory route
Term
Symptoms of german measles
Definition
slight fever, faint, rash, enlarged lymph nodes
Term
What can it do to a developing fetus?
Definition
eye abnormalities, brain damage, deafness, heart defects... SO WE GET VACCINATED!!
Term
Prevention of Rubella
Definition
MMR vaccine
Term
What are mild skin diseases that happen because of superficial cutaneous mycosis?
Definition
Ringworm, Diaper rash, Athlete's foot, Jock itch, or nails
Term
Yeast causes infections, but when it multiplies it forms a...
Definition
hyphae that clumps and becomes irritating to the skin
Term
What percent of college students have had sex?
Definition
85%
Term
What percent of those students have had 6 or more partners?
Definition
35%
Term
What percent of those students rarely or never use condoms?
Definition
70%
Term
What are the two urinary system infections?
Definition
Cystitis and Leptospirosis
Term
If the inflammation ascends up the ureters to the kidney, what happens?
Definition
You have big problems and it can lead to death
Term
Who is the culprit of Cystitis?
Definition
E. coli
Term
Symptoms of Cystitis?
Definition
abrupt onset...BURNING, cloudy urine, can be bloody and the CONSTANT urge to go...
Term
Causes of Cystitis
Definition
sexual intercourse (honeymooner's disease") or nontraditional sexual positions...as well as if you have major surgery
Term
Why is Cystitis called the "honeymooner's disease"?
Definition
the upward movement of E. Coli in area outside of urethra and vagina
Term
Women have cystitis more, but after 50...
Definition
men's chances increase because of prostate
Term
Treatment of Cystitis
Definition
Cranberry Juice, antibiotics, urinate after, so you don't get an UTI
Term
What is Leptospirosis
Definition
a spirochete bacterium that is found in the urine of wild rodents...after its ingested, it invades the blood and large numbers end up in the urinary tract.
Term
Symptoms of Leptospirosis
Definition
flu-like and red eyes, fell well for a days and then severe pain and kidney failure
Term
Bacterial vaginosis is...
Definition
THE MOST COMMON VAGINAL DISEASE; the normal flora are disturbed and an irritating infection results
Term
Symptoms of Bacterial vaginosis
Definition
thin, gray white discharge with fishy smell...cause basic (anaerobic microbial products create gas and a bubbly or frothy because CO2 is produced
Term
How do you treat Bacterial vag.
Definition
antibiotics, yogurt (put it there)
Term
Candidiasis is...
Definition
the 2nd most common disease; yeast infection in the vagina
Term
Causative agent of candidiasis is...
Definition
Candida albicans (yeast)
Term
Symptoms of Candidiasis
Definition
white discharge, clumpy, itchy irritated, red and swollen
Term
What is the causative agent of Staphylococcal Toxic Shock
Definition
Staphylococcus aureus
Term
The superantigen (TSST-1) induces what?
Definition
all the T-cells, non-specific toll receptors, MHC I and II on a cell to turn on.
Term
Symptoms of S. Toxic Shock are
Definition
flu-like, headache, rash, then drop in bp and organ failure (blood shot eyes, confusion, skin will peel off if survive)
Term
Why do you need to frequently replace tampons?
Definition
Staphylococcus aureus grows on blood-soaked tampon and makes a toxin (TSST-1/ crosslinks allthe receptors makes cytokines to increase response). The toxin can enter the bloodstream through abrasions caused by insertion/removal of tampons. The longer it's in you, the more toxin can be produced.
Term
What is the treatment of S. Toxic Shock
Definition
antibiotics and fluids
Term
What is the causative agent of gonorrhea
Definition
Neisseria gonorrhoeae (gram-negative diplococcus)
Term
What are the symptoms of gonorrhea?
Definition
2-5 days incubation, Men have a obvious yellow-green discharge (pus), painful urination...women have a less obvious discharge and are hard to diagnose. ---sterility
Term
What are the complications that happen to women?
Definition
PID (scars and egg can't make it through, MIGHT be able to reverse it.) sterility
Term
What are the complications that happen to men?
Definition
prostate disease, sterility
Term
What is the Chlamydia causative agent?
Definition
Chlamydia trachomatis (mimics Gonorrhea)
Term
Symptoms of Chlamydia
Definition
painful urination, gray-white discharge, may have some bleeding (SAME COMPLICATIONS)
Term
What is the number 1 bacterial STD?
Definition
Chlamydia
Term
What is the number 2 bacterial STD?
Definition
Gonorrhea
Term
What disease is called the great imitator and why?
Definition
Syphilis because it mimics other diseases
Term
Syphilis is...
Definition
readily penetrated through mucous membranes
Term
What is the causative agent of Syphilis
Definition
Treponema pallidum
Term
What are the 3 stages of Syphilis?
Definition
1) Primary = painless chancre(hard)and easily treated
2) Secondary = rash, all over body, palms on hands, soles of feet. Mucous patches in mouth and spread by kissing
3) Tertiary = gummas- ulcerations that appear in tissues of body. leads to stroke and heart attacks or mental illnesses
Term
Treatment of Syphilis
Definition
easily treated in early stages, PENICILLIN
Term
Chancroid is caused by...
Definition
Haemophilis ducreyi (small gram-negative fastidious rod)
Term
Symptoms of Chancroid are
Definition
Soft painful chancre, frequently involves inguinal lymph nodes, swells, rupture, drains - INCREASE CHANCE OF HIV TRANSMISSION
Term
Symptoms of Genital Herpes Simplex (Herpes Simplex Virus -2)
Definition
1 in 5 have blister-like lesions on their genitalia...MANY ARE ASYMPTOMATIC. 1st one is the hardest but it gets better.
Term
The complications of HSV-2 are....
Definition
infection of fetus or newborns can be fatal - cesarean delivery...increased risk of cervical cancer.
Term
Treatment of HSV-2
Definition
topical acyclovir for symptomatic relief
Term
Human Papillomaviruses (HPV) is the...
Definition
most common sexually transmitted disease/ genital warts
Term
Signs and symptoms of HPV
Definition
abnormal pap smear, colposcopy and biopsy, warts may appear as obvious legions, or there may be microscopic epithelial changes, itching
Term
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Definition
kjhdsfkjhasdkljfhasdljkfhkldsjafh
Term
Out of over 80 wart viruses, how many are sexually transmitted, how many are associated with cancer?
Definition
30+ and 15
Term
How do you prevent HPV?
Definition
Condoms, Gardisil (16 & 18)
Term
How do you TREAT HPV
Definition
Topical drugs (Podophilox or Imiquimod), LEEP (excise infected tissue), laser excision (zap it) Local excision
Term
Molluscum contagioscum virus (MCV) is part of the...
Definition
pox family, a dna virus that is a benign infection in childhood, but usually sex transmitted in adults.
Term
Symptoms of MCV
Definition
small red bumps with dimple in center; can appear on genitals, thighs, butt
Term
Treatment of MCV
Definition
liquid nitrogen, Imiquimod
Term
Which Virus is curable?
Definition
MCV
Term
What is immunodeficiency?
Definition
destruction of T-helper cells prevents body from combating common opportunists (Pneumonocystis, mycobacteria, and fungal agents)
Term
Transmission of HIV/AIDS is
Definition
sexual contact, contaminated needles, and mother-to-child at birth
Term
Treatment of HIV AIDS
Definition
helps lower virus load, but outcome is inevitable still
Term
What is the causative agent of Trichomoiasis
Definition
Trichomonas vaginalis (an eukaryotic microbe/ unicellular protozoan)
Term
Symptoms of Trich.
Definition
Men - asymptomatic
Women - ittitation in vagina, frothy, yellowish-green discharge, bad odor, NOT fishy
Term
Causative agent of Meningococcal Meningitis
Definition
Neisseria meningiditis
Term
How is M. Meningitis transmitted?
Definition
inhaling airbourne droplets
Term
Pathogenesis of M. Meningitis
Definition
1)attach to nasal membrane, cross into bloodstream, then into CSF and brain
2) liberate endotoxin, cause swelling and shock
3) Rapid progression
Term
Symptoms of M. Meningitis
Definition
mild cold, then throbbing headache, fever, pain, and stiffness in neck/back, nausea, vomiting petechiae - can go into shock
Term
Petechiae is...
Definition
purplish spots on skin
Term
LPS leads to...
Definition
shock and then death
Term
Treatment of M. Meningitis
Definition
antibiotics and profilactic treatment
Term
Causative agent of tetanus
Definition
Clostridium tetani
Term
Tetanus is...
Definition
associated with deep penetrating wounds with mixed bacteria
Term
Tetanus produces powerful neurotoxin that causes
Definition
motor neurons to fire rapidly (inhibitory muscles blocked so all contract) - no rest and it is a disease that leads to suffocation or drowning in own stomach contents
Term
Tetanus's toxin
Definition
Tetanospasmin, which binds to receptors on nerves and travels to spinal cord
Term
Problem when enters wounds...(Tetanus)
Definition
"rusty nail" because there is more chance of spores by clean nail...anaerobic if deep enough so now it can germinate
Term
Treatment and prevention of Tetanus
Definition
antitoxin serum, from caccinated people = antibody...antibiotics; DPT vaccine - tetanus toxid
Term
Causative agents of viral meningitis (AKA aseptic meningitis NO LPS!!!)
Definition
Coxsackie Virus and echovirus (enterovirus family)
Term
Transmission of V. Meningitis
Definition
fecal-oral route (dirty swimming pools)
Term
Symptoms of V. Meningitis
Definition
fever, severe headache behind the eyes, stiff neck (no petechia)
Term
Treatment of V. Meningitis
Definition
no need...7-10 days is gone, if there are symptoms though, check it out because it MIGHT be bacterial
Term
Causative agent of polio
Definition
Poliovirus (enterovirus)
Term
Transmission of polio
Definition
fecal-oral
Term
Symptoms of Polio
Definition
like meningitis (headache, fever, stiff neck, nausea .... muscle spasms begin and then followed by paralysis (most clear it, some don't)
Term
Pathogenesis of Polio
Definition
Virus attacks motor nerve cells (lytic) Poliovirus kills nerves which in turn causes muscle atrophy
Term
Prevention of Polio
Definition
IPV (inactivated poliovaccine) DEAD Before there was two that argued...there was Sox (which was a dead vaccine) and there was Seban (live virus)
Term
Causative agent of Rabies (zoonotic disease)
Definition
Rabies Virus
Term
Transmission of Rabies
Definition
Saliva of rabid animal or inhaled aerosols from bat feces
Term
Symptoms of Rabies
Definition
flu-like, tingling or twitching feeling at site of animal bite, odd behavior due to destruction of brain tissue (agitation, paranoia, sensitivity to light and sound, and frothing of the mouth)
Term
Pathogenesis of Rabies
Definition
rabies virus introduced in bite wound, travels to CNS, replicates and spreads to salivary glanfs, eyes (longer to travel to the brain, more time to treat)
Term
Prevention of Rabies
Definition
vaccine available, must be administered during incubation...
Term
Whether microbes in wounds cause disease depends on...
Definition
1) Virulence of the microorganism; 2) Number of the microorganism; 3) Immune status of host; 4) Nature of the wound
Term
Types of wounds
Definition
1) Burns (weepy dying tissue, bursting out); 2) Incisions (knife cuts, surgery or accidental); 3) Punctures (penetration of sharp object); 4) Lacerations (tears that are hard and scar easily); 5) Contusions (blows that crush tissue)
Term
What is the causative agent of Staphylococcal wound infections
Definition
Staphylococcus aureus (pyogenic causing production of pus, inducing your inflammatory response)
Term
Symptoms of S. wound infections
Definition
swelling, redness, pain, pus
Term
If infected area is large or if the bacteria enters the blood,
Definition
more drastic *fever* more bacteria if wound is larger, many nutrients! :)!
Term
Prevention of S. Wound Infections
Definition
Clean wound, antibiotic ointment
Term
Treatment of S. Wound Infections
Definition
Problem - MRSA (Methillin Resistant Staphylococcus aureus) - hospitals
Term
Group A Streptococcal "Flesh Eating" Infections causative agent (AKA necrotizing facilitis)
Definition
Streptococcus pyogenes
Term
Symptoms of "flesh eating" infections
Definition
sever pain at break in skin, swelling under skin causes stretching and discoloration, fever, and confusion
Term
Pathogenesis of flesh eating infections
Definition
S. pyogenes secretes Exotoxin A (superantigen that causes shock) and Exotoxin B (melts the tissues/muscle underneath the skin)
Term
Invasive infections are rare in healthy people with minor injuries
Definition
Susceptibility increased with diabetes, abortions, childbirth, alcoholism, AIDS, surgery, injected drug use
Term
Major cause of nosocomial infections (because of shoes, plants, flowers, and produce) is
Definition
Psesdomonas aeruginosa (widespread in soil and water)
Term
The Opportunistic pathogen of P. aeruginosa...
Definition
is in burn victims, immunocompromised
Term
Disease and symptoms of P. aeruginosa
Definition
LOTS~ Responsible for skin rashes from hot tubs, cause ear infections in swimmers, eye infections in contact users, bone infections from stepping on nails, nail infections, piercing infections, biofilms on lungs of cystic fibrosis patients
Term
Treatment of P. aeruginosa
Definition
antibiotics
Term
Anaerobic bacterial wounds are...
Definition
Tetanus and Gas gangrene
Term
Causative agent of gas gangrene
Definition
Clostridium perfringens
Term
Gas gangrene develops if
Definition
dirt enters wound and a long delay til its treated
Term
Pathogenesis of gas gangrene
Definition
C. perfringens doesn't grow well in healthy tissue - but thrives in dead tissue (SPORES!!!)
Term
Alpha toxin does what?
Definition
attacts lecithin in cell membranes leading to disruption of cells and then ferments glycogen in muscle so there is gas - painful and cause further spreading of bacteria in the tissue
Term
Causative agent of antibiotic-associated colitis~
Definition
Clostridium difficile (usually normal flora) - needs to be treated
Term
Dental caries are
Definition
holes in teeth produced by acid - from biofilms on teeth
Term
What is the causative agent of dental caries/biofims?
Definition
Streptococcus mutans
Term
Periodontal disease is...
Definition
inflammation of fums, receding gum-line...bacteria gets btw gum and tooth floss
Term
Prevention of periodontal disease is...
Definition
reduce sweets in diet, brush, floss regularly
Term
Trench mouth is part of what species
Definition
Treponema species
Term
Gastritis causative agent is...
Definition
Helicobacter pylori (associated with ulcers and cancer)
Term
Symptoms of gastritis
Definition
range from belching to vomiting to nothing INGEST THEM
Term
What does the H. pylori do?
Definition
creates a neutral environment in the stomach by converting urea in the stomach to ammonia - releases urease, allowing them to survive in stomach...basic so it can live
Term
What is herpetic whitlow
Definition
painful finger infection often seen in nurses
Term
Treatment of HSV-1
Definition
acyclovir - inhibits DNA polymerase of HSV, only replicating virus...NOT latent
Term
What is the causative agent of Mumps?
Definition
Mump virus
Term
What does the Mumps Virus do?
Definition
acute viral infection that attacks the parotid glands (they produce saliva)
Term
Symptoms of Mumps
Definition
fever, loss of appetite, headaches, swollen parotid glads, lumps on cheek, can lead to sterility
Term
Prevention for Mumps
Definition
MMR vaccine
Term
What is the causative agent of Cholera
Definition
Vibrio cholerae (curved shape rod)
Term
Transmission of Cholera
Definition
fecally-contaminated water - leads to a RICE stool
Term
Cholera produces a powerful toxin that does what?
Definition
drains water from the blood and empties it into the GI tract - secreting a lot of water and expelled from intestine - dumping water out of intestines...attaches to intestine making Na and Cl ions and H2O follows
Term
Prevention of cholera
Definition
water sanitation, when travel pay attention to food and water
Term
When does Cholera become deadly?
Definition
when infected by a bacteriophage = lysogenic conversion with a toxin gene
Term
Treatment of Cholera
Definition
electrolyte and fluid placement, antibiotics
Term
Causative agent of Shigellosis
Definition
Shigella species: Shigella flexneri, S. boydii, S. sonnei, and S. dysenteriae
Term
Transmission of S. dysenteriae
Definition
fecal-oral, usu. food or water; overcrowded populations, poor sanitation; HUMANS ARE THE SOURCE
Term
Symptoms of S. dysenteriae
Definition
Dysentery (diarrhea with a twist because blood and mucus)
Term
What toxin is produced in Shigellosis?
Definition
shiga-toxin that is responsible for Hemolytic Uremic Syndrome- leading to kidney failure, lysis of RBCs
Term
Pathogenesis of Shigellosis
Definition
Shigellas are taken up and transported downwards...Macrophages are killed. Endocytose and endosomes are quickly lysed, leaving free in cytoplasm. Actin forms a tail so it can move and it multiplies. Starts an inflammatory response
Term
Causative agent of gastroenteritis
Definition
Escherichia coli
Term
Toxigenic strains in gastroenteritis are important...
Definition
the best known strain O157:H7
Term
What toxin is produced in gastroenteritis
Definition
shiga-like toxin that also leads to Hemolytic Uremic Syndrome
Term
Transmission of Gastroenteritis
Definition
foodborne, waterbourne (esp. meat and water) Ground beef, sausage, spinach, apple juice
Term
Salmonellosis has two transmissions
Definition
ingestion of food contaminated by human feces, and ingestion of good contaminated by animal feces
Term
Ingestion of food contaminated by animal feces (most common)
Definition
Salmonella enterica (chicken)
Term
Ingestion of food contaminated by human feces
Definition
Salmonella typhi (typhoid fever)causes shock and then diarrhea
Term
Causative agent of Campylobacteriosis (leading cause of bacterial diarrhea in the U.S.)
Definition
Campylobacter jejuni - easy to make you sick because 1 drop of something raw =bad
Term
Transmission of Campylobacteriosis
Definition
food and water-bourne transmission (rarely human to human) chickens and cows
Term
Causative agent of Botulism
Definition
Clostridium botulinum
Term
Releases a deadly toxin onto food that does what?
Definition
Botulinum toxin causes paralysis by neurotoxin blocking transmission of nerve signals to muscles - a few mg causes disease...Spores are from soil...be careful canning
Term
Symptoms of Botulism
Definition
12-36 hours after ingestion dizziness, dry mouth, blurred vision (eye muscle paralysis), abdominal symptoms.....TELL TALE SIGN- PARALYSIS!!! can die or suffocate because it paralyzes the respiratory muscles
Term
Pathogenesis of Botulism
Definition
Spore germinate into vegetative cell on food when temperature is right, and releases toxin into food. Toxin is then ingested, absorbed into bloodstream in the intestine, and travels to the motor neurons.
Term
Prevention of Botulism
Definition
when canning be careful because spores can survive and germinate...toxin is heat labile, so heat it to 100 degrees for 15 minutes before eating NO HONEY TO INFANTS!
Term
Treatment of Botulism
Definition
antitoxin, IV, enemas
Term
Rotaviral gastroenteritis (RNA naked virus) is important in...
Definition
infants and children
Term
Rotaviral gastroenteritis causes
Definition
severe dehyration so fluid therapy is important....can shed it in 5-8 days
Term
All viral diseases of the lower digestive system are transmitted by?
Definition
fecal oral
Term
Norwalk virus gastroenteritis is called
Definition
"cruise ship virus" because it along with nursing homes and cafeterias is where its found.
Term
How long does the Norwalk virus gastroenteritis last?
Definition
12-60 hours
Term
Where does Hepatitis A replicate?
Definition
in the liver, then it does to bile and feces, so it can be shed
Term
Prevention for Hepatitis A
Definition
vaccine is available (travelers and healthcare workers) RAW SHELLFISH IS THE CULPRIT
Term
Symptoms of Hep. A
Definition
Jaundice, clay-colored feces, abdominal pain
Term
Giardiasis causative agent is?
Definition
Giardia lamblia (a flagellated protozoan)
Term
Symptoms of Giardiasis
Definition
explosive diarrhea, and stinky gas
Term
Causative agent of Cryptosporidiosis
Definition
Cryptosporidium parvum (infectious and hard to move from water)
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