MT4 - Mycobacteria General ++ (W) Flashcards
Giant cells typically occur in tubercles
T
Mycobacterium tuberculosis can cause generalised tuberculosis in pigs.
T
Mycobacterium tuberculosis can cause tuberculosis in humans.
T
Facultative pathogenic mycobacteria can colonise only cold-blooded animals.
F
Cold-blooded, cattle and swine + other mammals
Mycobacteria are facultative intracellular bacteria.
T
Saprophytic and facultative pathogenic mycobacteria cannot colonise warm blooded animals.
F
Facultative pathogenic Mycobacteria can only reproduce in the environment.
F
Can be found in environment, plants, water and gut
Facultative pathogenic Mycobacteria can only colonize in warm-blooded animals.
F
There is no antigen connection between facultative and obligate pathogenic mycobacteria
F
Pigs are resistant against Mycobacterium tuberculosis.
F
Lympho-haematogenous spread of mycobacteria can be seen in the post primary phase of tuberculosis.
F
Found in phase 2 - “early generalization”
There is a close antigen relationship between mycobacteria
T
Mycobacterium bovis can cause tuberculosis only in ruminants
F
Mycobacterium bovis can cause generalized tuberculosis in goats
T
Tuberculin is an extract made from broth culture of mycobacteria
T
Tuberculin is the toxin produced by mycobacteria
F
it’s an antigen extract
Intra canalicular spread of mycobacteria can be seen in the post primary phase of
tuberculosis
T
Antibodies against mycobacteria are detected in the tuberculin test
F
Measure the immune response, measuring the reaction of skin
Facultative pathogenic mycobacteria can cause local lesions in pigs
T
Facultative pathogenic mycobacteria cannot cause tuberculosis
F
Mycobacteria are acid and alcohol fast bacteria
T
the bacteria is resistant to acid and alcohol
Mycobacterium tuberculosis can cause generalized tuberculosis in parrots
T
Fresh tuberculosis lesions in the lymph nodes are common the early generation
T
Mycobacteria can be stained with Ziehl-Neelsen staining
T
Mycobacteria cannot be stained
F
Obligate pathogenic mycobacteria can occur and replicate in the environment
F
Replicates in the infected animal
All mycobacteria species are obligate pathogenic
F
Majority is, but some are saprophytic, facultative pathogens
The resistance of mycobacteria is low, they die in the environment soon
F
Certain components make the cell wall very resistan
Mycobacterium bovis can cause generalised tuberculosis in goats
T
Fresh tuberculosis lesions in the lymph nodes are common in the post primary phase
F
Mycobacteria are highly resistant thanks to lipids and waxes in the cell wall
T
Mycobacterium tuberculosis can cause tuberculosis in humans
T
Mycobacterium tuberculosis can cause generalized tuberculosis in pigs
T
Mycobacterium bovis can cause generalized tuberculosis in pigs
T
Pigs are resistant against Mycobacterium tuberculosis
F
They are highly susceptible
Mycobacterium bovis can cause generalized tuberculosis in badgers
T
Mycobacterium caprae can infect only goats
F
Tuberculosis lesions in the lymph node are common in the early generalization
T
The habitat of the obligate pathogenic Mycobacteria is the environment
F
habitat is the infected animal
Mycobacteria are obligate intracellular bacteria
F
Facultative intracellular bacteria
Waxes can be found in the cell wall of Mycobacteria
T
Only Mycobacterium tuberculosis can cause tuberculosis in humans
F
Neutrophil granulocytes can be typically found in tubercles
F
ymphocytes are found
Necrosis can be seen in the tubercles
T
The habitat of saprophytic, facultative pathogenic Mycobacteria is the environment.
T
Together with plants, water and gut
Saprophytic, facultative pathogenic Mycobacteria cannot colonize mammals
F
Mycobacteria have several shared antigens
T
The cell wall of mycobacteria contains mycolic acid
T
The tuberculin contains lipopolysaccharide (LPS) antigens
F
The cell wall of mycobacteria contains large amount of lipopolysaccharide
T
Mycobacteria can replicate only in animals
I think F
T in A but if q obligate myco then T is correct
If just mycobact in general though I think F bc saprophytic+facultative rep in the env
Mycobacterium tuberculosis causes tuberculosis in parrots
T
Mycobacterium tuberculosis causes generalized tuberculosis in badgers
F
M.bovis
Mycobacterium tuberculosis causes tuberculosis in poultry
F
Cage birds and parrots, NOT poultry
The cell wall of mycobacteria contains mycolic acid
T
The tuberculin contains lipopolysaccharide (LPS) antigens
F
All mycobacteria can replicate in the environment
F
Mycobacterium bovis can cause tuberculosis in wild living ruminants
T
Mycobacterium bovis can cause tuberculosis in wild boars
T
If the increase of the thickness of the skin fold in the tuberculin test is 1.9 mm the reaction is positive
F
Less than 2mm = negative
The skin intradermal tuberculin test is a Type IV. hypersensitivity reaction
T
Antigens of mycobacteria show a close relationship
T
Mycobacteria can survive in the environment only for a few days
F
Atypical mycobacteria can cause lesions in pigs
T
Mycobacteria caprae can infect cattle, other ruminants and swine.
T
Saprophytic, facultative pathogenic mycobacteria cannot cause tuberculosis
F
NOT COMMON
Only cattle maintain bovine tuberculosis
F
Obligate pathogenic Mycobacteria can only reproduce in the infected body
T
Facultative pathogenic mycobacteria can cause tuberculosis in fishes
T- file is unsure
Mycobacteria are not resistant, they can survive in the environment for maximum of two days
F-A
Due to the cell wall components, they survive long
Mycobacterium suis is the most frequent agent of tuberculosis of pigs
F
M.bovis and M.Caprae is most common
Facultative pathogenic mycobacteria can colonize the gut of pigs
T
Sometimes facultative pathogenic mycobacteria cause lesions in pig
T
Local lesions
Mycobacteria can survive in the environment
T
Mycobacteria cannot be cultured
F
takes too long
Waxes and lipids in the mycobacteria are virulence factors
T
Tuberculin test is an allergic test
T
Mycobacteria can be cultured, but their incubation time is long
T
Tuberculosis is diagnosed by detecting antibodies to M. bovis in the blood with ELISA
F
Used as complimentary test
The center of the tubercle is necrotized
T
The tubercle consists of histiocytes and foreign body giant cell.
T
The causative agents of tuberculosis are obligate pathogenic bacteria
T
Köster staining is a special staining for Mycobacteria
F
Ziehl-Neelsen
Mycobacteria are highly resistant
T
Due to the cell wall
Early generalization of mycobacteria occurs via lympho-hematogenous route
T
In dogs’ tuberculosis can be generalized
T
Late generalization can be characterized by lost resistance.
T
In the tubercle, coagulation necrosis is seen.
T
In the phase of early generalization Mycobacteria do not replicate in the lymph node.
F
Mycobacteria are a worldwide disease
T
Chronic tuberculosis causes changes in the lymph node
F
No fresh lesions in the lymph nodes
Mycobacteria can be demonstrated from the discharge of sick animals by staining.
T
Tuberculosis can be demonstrated earliest by ELISA
F
Tuberculosis can first be diagnosed by PCR
F
Tuberculosis can be diagnosed with certainty serology
F
Mycobacterium infection in pigs can be zoonotic
T
Mycobacterium spp. in swine can be caused by atypical mycobacteria
T
Mycobacteria in swine can be caused by M. bovis and produces localized lesions.
F
generalises
M. tuberculosis is a common mycobacterium infection of pig
F- A (not common maybe)
Mycobacteria are acid and alcohol fast bacteria
T
Sawdust bedding can predispose pigs to infection by facultative pathogenic mycobacteria.
T
Facultative pathogenic mycobacteria can cause generalized tuberculosis in pigs.
T-A
Localized lesions
The habitat of pathogenic mycobacteria is the soil
F
The habitat of facultative pathogenic mycobacteria is the soil
F
Only cattle are susceptible to Mycobacterium bovis
F
Some facultative pathogenic Mycobacteria can cause tuberculosis in cold blooded
animals
T
The tuberculin contains antigens from mycobacteria
T
The agent of avian tuberculosis is an obligate pathogenic bacterium
T
