Flashcards in Nocardia Asteroides Deck (14):
What it look like?
G+ bacilli w/ branching coccobacillary hyphae. Saprophytic.
Aerobic or anaerobic?
Where it be?
Normal flora of soil + H2O
Why do they stain weakly acid fast?
Have short mycolic acid chains
Catalase and superoxide dismutase for what?
Tells PMNs and macrophages to fuck off
Cord factor does what?
Prevents phagolysosome fusion
Inhaled or soil infects skin wound. NO person-person or nosocomial.
Common in which patients?
With underlying debilitations. Opportunistic pathogen.
Inhalation then grows in lungs forming lung abscesses. Can become systemic: infection/abscess in brain, blood, heart.
Smear/culture on BCYE. G stain. AF stain to confirm.
How long do you treat an immunocompetent pt?
How long do you treat an ICP?