FA Gram + Rods II Flashcards
Caused by Bacillus anthracis, a gram +, spore-forming rod that produces anthrax toxin.
Anthrax
B anthraces is the only bacterium with polypeptide capsule, which contains
D-glutamate
Inhalation of spores - flu-like symptoms that rapidly progress to fever, pulmonary hemorrhage, mediastinitis, and shock.
Pulmonary anthrax
Contact –+ black eschar (painless ulcer); can progress to bacteremia and death.
Cutaneous anthrax
what are the virulence factors that cause cutaneous anthrax?
Lethal factor and edema factor
black eschar (necrosis) surrounded by edematous ring
black skin lesions caused by cutaneous anthrax
Woolsorters’ disease - inhalation of spores from contaminated woold
pulmonary anthrax
reheated rice syndrome
B cereus
Emetic type of B cereus is usually seen with what types of fod
rice and pasta
emetic type of B cereus is caused by what toxin?
cereulide, a preformed toxin
B cerus causes food poisoning because SPORES survive cooking rice. then keeping the rice warm results in
germination of spores and enterotoxin formation
how long before nausea and vomiting hit after ingestion of B cereus cereulide toxin?
1-5 hours
how long before B cereus diarrheal type causes watery nonbloody diarrhea and GI pain?
8-18 hours
Facultative intracellular microbe that is acquired by ingestion of unpasteurized milk/cheese and deli meats or by vaginal transmission during birth
Listeria monocytogenes
Listeria form WHAT by which they move from cell to cell
“Actin rockets”
