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BacT exam 2 Flashcards

(64 cards)

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1
Q

What bacteria have been implicated with the condition Bovine farcy

A

Nocardia farcinica
Mycobacterium farcinogenes
Mycobacterium senegalense

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2
Q

What is the most common species of Nocardia

A

Nocardia asteroids

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3
Q

How is Nocardia transmitted?

A

Inhalation, trauma and infestion

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4
Q

What are the members of the filamentous bacteria?

A

Nocardia
Actinomyces
Dermatophilus
Streptobacilus

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5
Q

What causes a swollen snood in turkeys, as well as endocarditis and arthritis?

A

Erysipelothrix rhusiopathiae

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6
Q

What causes polyarthritis in sheep and is usually associated with castrations, docking or shearing

A

Erysipelothrix rhusiopathiae

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7
Q

What causes septicemia and urticaria in dolphins

A

Erysipelothrix rhusiopathiae

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8
Q

What causes painful local ulcers, usually on the hand of humans that handle fish or meat

A

Erysipelothrix rhusiopathiae

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9
Q

What bacteria has neuroaminidases

A

Erysipelothrix rhusiopathiae

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10
Q

What is non-motile non-acid fast, non-spore forming, catalase negative, oxidase negative, coagulase positive, produces hydrogen sulfide, and non-hemolytic

A

Erysipelothrix rhusiopathiae

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11
Q

What bacteria causes encephalitis (circling disease), septicemia, abortion, conjunctivitis and mastitis in ruminants

A

Listeria

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12
Q

What are the virulence factors for listeria?

A 
Listeriolysion O (LLO)
Internalins --> induce phagocytosis
ActA --> intracellular movement
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13
Q

What is non- spore forming, facultative anaerobe, catalase positive, oxidase negative, motile at 25C and non acid fast

A

Listeria

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14
Q

What is spore forming, facultative anaerobe, catalase positive, oxidase negative, non-motile

A

Bacillus

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15
Q

What effects does Bacillus have on swine?

A

Ulcerative hemorrhagic enteritis
Mesenteric lymphadenitis
obstructive edema –> death

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16
Q

What effects does Bacillus have on ruminants?

A

Septicemia, epistaxis, absent rigor mortins, high fever, agalactia, abortion, hematuria, hemorrhagic diarrhea, regional edema, congestion of mucous membranes

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17
Q

What bacteria is aerobic, acid fast, non spore forming, lacks flagella and capsule

A

Mycobacterium

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18
Q

What does Mycobacterium cause?

A

Tuberculosis
Paaratuberculosis (Jone’s disease)
Granulomatous disease

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19
Q

What are the virulence factors of Mycobacterium?

A

Lipids
Glycolipids
peptidoglycolipids

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20
Q

What immobilizes neutrophils, inactivates phagocytes mitochondria and inhibits macrophage chemotaxis in mycobacterium?

A

Glycolipid-dimycolyl trehalose (Cord factor)

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21
Q

What diseases are reportable?

A

Tuberculosis

Johne’s disease

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22
Q

Ornamental fish from florida are dying from what infection?

A

Erysipelothrix rhusiopathiae

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23
Q

In tuberculous pneumonia, what type of response predominates?

A

neutrophilic response

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24
Q

What type of immunity influences the course of tuberculosis?

A

Cell mediated immunity

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25
What species of Mycobacterium infects ruminants?
Usually M. bovis | M. avium and M. tuberculosis can too, but generally subclinical or non progressive lesions occur.
26
what sites does M. bovis affect ruminants?
Respiratory tract lymph nodes serous cavities may be spread to liver and kidneys
27
Swine are mainly infected with what species of Mycobacterium?
M. bovis
28
What does M. bovis cause in swine?
Progressive diseases with classical lesions
29
In swine, M. tuberculosis doesn't pass what structure?
regional lymph nodes
30
What mycobacterium affects dogs and cats?
M. bovis
31
What mycobacterium affects dogs
M. tuberculosis | M. bovis
32
What effect does Mycobacterium have on dogs?
hypertrophic pulmonary osteorthrapathy (Marie's disease)
33
What bacteria causes Marie's Disease in dogs
Mycobacterium
34
What disease causes pyogranulomatous dermatitis in cats?
Mycobacterium
35
Primates are susceptible to what species of Mycobacterium?
M. tuberculosis | M. bovis
36
M. avium and non tuberculous Mycobacterium could infect what primates?
immunosuppresed
37
How do primates get infected with M. tuberculosis
Airborne route
38
How could primates get infected with M. bovis?
via ingestion in unpasteurized milk
39
What does M. bovis cause in primates?
primary regional lymphadenitis
40
What could result if M. bovis is disseminated to the vertebra?
Hunchback
41
At what temperature does M. avian grown?
higher than 43 C
42
How do birds become infected with M. avium?
via alimentary canal
43
What organs are affected with M. avium in a bird?
liver, spleen, bone marrow, lungs, peritoneum
44
tubercolosis is typically a disease of
captivity and domestication
45
What breed of dogs tend to be more susceptible to tuberculosis than Dachshunds and Doberman pinscher?
Fox terriers | Irish setters
46
What is gram positive, spore forming, anaerobic rods, fermentative, catalase negative and oxidase negative
Clostridium
47
What do clostridial cultures typically emit?
putrid odors
48
What is the most common mode of energy production?
peptide catabolism
49
Most clostridium are motile by pertinacious flagella, what species of Clostridium is not motile
C. perfringens
50
What is one of the most frequently isolated pathogenic bacterium, most commonly found anaerobe in human infections
Clostridium perfringens
51
What virulence factors does clostridium have?
- Adhesins (fibronectin and collagen binding proteins) - Capsule - anti phagocytic - VirR/VirS regulate toxin expression
52
Alpha toxins (Cpa or Plc) are all produced by
C. perfringens
53
What do Alpha toxin (Cpa or PLc) cause
hemolysis, necrosis and lethality
54
What do beta toxin (Cpb) cause
pore forming toxin
55
What favors the action of beta toxins produced by clostridium
protease (trypsin) inhibitors in colostrum
56
What is epsilon toxin (Etx) activated by?
Trypsin
57
What does epsilon toxin cause?
necrotizing and lethal
58
Where does epsilon toxin concentrate?
Brain and kidney, damaging microvasculature
59
What toxin affects cellular cytoskeleton and results in death of affected cell
Iota toxin (Itx)
60
Enterotoxin (CPE) is produced by
~10% of type A C. perfringens
61
What does enterotoxin cause?
fluid and electrolyte abnormalities
62
What toxin is most important with Wound infection (Type A)
alpha toxin
63
what plays a big role in wound infection Type A
Capsule Alpha toxin perfringolysin O
64
What does wound infection type A cause
anaerobic cellulitis and gas gangrene

BacT (1 decks)

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