Family Bacteroidacea Flashcards
bacteroides fragilis
why is this notable?
few gram neg. bacteria that do not contain LIPID A component, but DOES possess a capsule
Level of virulence
bacteroides fragilis
low virulence
Flora
bacteroides fragilis
normal for human gut
metabolic
bacteroides fragilis
anaebolic
gram neg
Clinical
bacteroides fragilis
abscesses in GI tract, pelvis, and lung
Which is the only Gram - without typical endotoxin?
bacteroides fragilis
which is the only Gram + with typical endotoxin?
listeria
Clinical presentation of fragilis
peritonitis, GI, pelvic abcesses
facts about bacteroids
make vitamin K for host
Bacteroides melaninogenicus
transmission, metabolism, toxins, clinical
part of the normal flora
anaerobic, gram neg
non spore former, polysaccharide capsule
does not contain LIPID A (no endotoxin)
clinical: necrotizing anaerobic pneumonia, periodotonal disease
Fusobacterium
transmission, metabolism, toxins, clinical
common flora
strict anaerobes
G-
nonspore former
clinical: necrotizing anaerobic pneumonia, abdominal and pelvic abscesses, otitis media
produces a black pigment when grown on blood agar
melaninogenicus
