micro Flashcards
mycoplasma pneumonia
- no cell wall
- tracheobronchitis and walking pneumonia
- elevated reticulocyte count
- increased LDH via cold agglutinins via IgM crosslinks, then compliment binding to RBC causes hemolysis
e coli virulence factor
Lipid A - induces release of pyrogens (fever, hypotension, septic shock)
also P Fimbriae
campylobacter jejuni
- gram negative comma shaped
- in intestinal tract of animals (undercooked chicken)
- bloody diarrhea
- oxidase positive
- reactive arthritis
- causes guillon barre - ascending paralysis
- autoimmune response causing demyelination(endometrial) of nerves (opposite of botulism)
- invasive
neisseria pili
attaches to nasopharyngeal epithelial cells
undergoes antigenic variation
neisseria
HBsAG
chronic infection is >6 months
anti HBsAg
confers long term immunity
plasmodium falciparum
-malaria
-treat with atovaquone and proguinil
-peripheral blood smear with giemsa staining shows multiple small rings representing developing trophozoites
yersinia pestis
safety pin appearance on staining
pertussis toxin
bark like cough
causes increased intracellular cAMP through inactivation of Gi subunit
green discharge from penis
neisseria gonhorrea
rash on palms and soles
CARS
coxsackie A
rickettsia
syphilis
multiple enhancing ring lesions
toxoplasmosis
treat with sulfazadine and pyrimethamine
curved bacterium
h pylori
campylobacter
vibrio cholera
steeple chase sign
croup
hep b DNA
double stranded but transcribed into partially double stranded DNA
thumbprint sign
epiglottis - ex haemophilius
acute hepatitis A infection
spotty necrosis with hepacyte ballooning, eosinophilic apoptotic hepatocytes, with fever, anorexia, and dark colored urine
Organism with Gamma hemolysis
Enterococcus, strep gallolyticus
Organism bile soluble
Strep pneumonia
Organism bile insoluble
Strep viridans
Mulberry shaped intracytoplasmic inclusions
Erhlichia
bacteriodes fragilis
anaerobic gram negative bacillus that can cause periappendiceal abscess
virulence of bordatella pertussis
loss of ciliated respiratory epithelial cells