Actinobacteria

Question 1

colony characteristics

Answer 1

filamentous formation
granulomatous lesions

Question 2

hypersensitivity type of thermophilic actinobacteria saccharopolyspora rectivirgula

Answer 2

type III hypersensitivity

Question 3

general gram, morphology, growth, pathogen type

Answer 3

-gram positive
-branching filaments
-slow growth on media
-opportunistic pathogens

Question 4

actinomyces, arcanobacterium, actinobaculum – respiration, spore, motility, ZN, location

Answer 4

-anaerobic or facultatively anaerobic
-morphologically heterogenous
-non spore forming
-non motile
-modified ziehl neelsen negative
-colonize mucus membranes

Question 5

nocardia species – respiration, motility, spore, growth, location

Answer 5

-aerobic
-non motile
-spores form aerial filaments
-growth on sabouraud dextrose agar (specific for fungi culture)
-soil saprophytes

Question 6

dermatophilus congolensis – transmission, respiration, motility and spore, growth, location

Answer 6

-can be transmitted by ectoparasites
-aerobic and capnophilic
-motile zoospores
-no growth on sabouraud dextrose agar
-found in scabs and foci on skin of carrier animals