Mycobacteria Flashcards
respiration
aerobic
spore
non spore forming
shape
rod
acid fast bacilli?
yes
ZN staining
positive
pathogenesis
saprophytes
opportunistic invaders
obligate pathogens
intracellular bacteria (phagocytized by M2 macrophage)
resistance to enviornmental conditions
due to bacterial lipid rich wall
zoonotic disease?
yes
acid fast?
yes
ZN staining
positive
shape
rods
growth media
egg enriched media
respiration
aerobic
motility
non motile
spore
non spore forming
carotenoid pigmetns
some mycobacteria produce them
major diseases
tuberculosis
Johne’s disease
feline leprosy
tuberculin test
cellular immune response
type IV delayed hypersensitivity
M tuberculosis colonies
rough
buff
difficult to break apart
no essential growth supplement
m bovis colonies
cream colored
raised with central roughness
break apart easily
no essential growth supplement
m avium complex colonies
sticky
off white
break apart easily
no essential growth supplement
m avium subspecies paratuberculosis colonies
small
hemispherical
some pigmented
essential growth supplement – mycobactin
clinical infections
tuberculosis in avian and mammals
paratuberculosis in ruminants
feline leprosy
skin tuberculosis and bovine farcy
granulomatous lesions – caseous appearance inside granuloma
