ID: Mycoplasma and Mycobaterial infections Flashcards
what agent causes atypical pneumonia
M. pneumonia
what does it mean that mycobacteria is acid fast (in regards to staining)
it retains the carbofushsin stain after rinsing with alc
primary infection with TB is what type of hypersensitivity reaction
type IV
what makes up a ghon complex
a ghon focus in combo with infected mediastinal or hilar lymph nodes
anergic patients with little or no resistance will develop what type of leprosy
laepromatous leprosy
hypergic patients with a high resistance will develop which type of leprosy
tuberculoid leprosy
what does M. avium and M. intracellulare cause in immunocompetetant people
rare slowly progressive granulomatous pulmonary disease (looks like TB but progresses even more slowly)
what does M. avium and M. intracellulare cause in immunosuppressed people (AIDs)
progressive systemic disease
what disease does M. scrofulaceum cause
cervical lymphadenitis in children
what disaese does M. marinum cause?
hand infection in aquarium handlers
what does mycobacteria cord factor do
inhibits macrophage maturation and induce release of TNF-a
what does mycobacteria sulfatides (suface glycolipids)do?
inhibit phagolysosomal fusion
what type of immunity is raised against lepromatous leprosy
low cell mediated immunity and a humoral TH2 reponse
what type of immunity is raised against tuberculoid leprosy
high cell mediated immunity with TH1 immune response
