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Bacteriology Final > Nervous, Musculoskeletal, Carvdiovascular and lymphatic systems > Flashcards

Nervous, Musculoskeletal, Carvdiovascular and lymphatic systems Flashcards

1
Q

Which of the following organisms does not have a predilection site for the nervous tissue?

A. Cryptococcus neoformans
B. Histophilus somni
C. Listeria monocytogenes
D. Salmonella

A

D. Salmonella

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2
Q

Plecytosis is the presence of:

A. geomorphic cells in the blood
B. geomorphic cells in the CSF
C. Pleomorphic cells in the nervous tissue
D. Increased number of cells in the cerebral spinal fluid

A

D. increased number of cells in the cerebral spinal fluid

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3
Q

Which of the following is not a histotoxic Clostridium sp./

A. C. chauvoei
B. C. Novyi
C. C. septicum
D. C. difficile

A

D. C. difficile

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4
Q

What causes thromboembolic meningoencephalitis (TEME) or thrombotic meningoencephalitis (TME)?

A

Histophilus somni

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5
Q

What does Histophilus somni cause?

A

blindness, ataxia, convulsions, depression and coma

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6
Q

What are pathognomonic lesions of Histophilus somni?

A

Multiple reddish necrotic foci, thrombi in blood vessels composed of leukocytes, fibrin

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7
Q

Histophilus somni is also known as?

A

Sleeper syndrome

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8
Q

Listeria monocytogenes is a common infection in what animals?

A

Cattle, sheep and goats

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9
Q

What does Listeria monocytogenes cause?

A
  • circling disease

- encephalitis

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10
Q

How do the bacteria get to the CNS in Listeria monocytogenes?

A

bacterial invade through the oral mucosa and travel along the TRIGEMINAL NERVE and have affinity for the brain stem

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11
Q

How do ruminants get Listeria monocytoenes?

A

ingestion of contaminated silage during winter

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12
Q

How is listeriosis presented in calves?

A

foal hepatic necrosis (necrotizing hepatitis) and hemorrhagic gastroenteritis

FOOD SAFTY PATHOGEN

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13
Q

What laboratory diagnostic tests would you need to do to check for Listeria?

A

Listeria enrichment culture or PCR

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14
Q

What is the drug of choice for Listeria monocytogenes?

A

Penicillin (high doses are required because of the difficulty in achieving minimum bactericidal concentrations in the brain)

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15
Q

What causes sporadic bovine encephalomyelitis in feedlot cattle?

A

Chlamydia pecorum

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16
Q

What causes meningitis in calves as a result of systemic infection by what bacteria?

A

Salmonella Dublin

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17
Q

Cryptococcus infection in cats causes what type of infection (mainly)?

A

CNS infection

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18
Q

Focal symmetrical encephalomalacia in sheep is caused by what bacteria?

A

Clostridium perfringens type D

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19
Q

What does Clostridium perfringens type D cause in sheep?

A
  • focal symmetrical encehalomalacia
  • symmetrical necrosis and hemorrhage of the white matter
  • pulpy kidney
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20
Q

What are some bacteria that cause pericarditis, myocarditis or endocarditis?

A
  • Clostridium chauvoei (black leg)
  • Tyzzers disease
  • Fusobacterium necrophorum
  • Trueperella pyogenes
  • Corynebacterium pseudotuberculosis
  • Histophilus somni
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21
Q

Edema disease in pigs is caused by what toxin?

A

Shiga toxin

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22
Q

Edema disease in pigs is primarily a disease of the vasculature and subcutaneous tissue. True or False?

A

True

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23
Q

Where would you get edema in edema disease in pigs?

A
  • eyelid
  • submucosa of the stomach
    mesocolon
24
Q

Lymphadentitis is caused by which bacteria?

A
  • Corynebacterium pseudotuberculosis (caseous lymphadentitis)
  • Strangles (streptococcus equi sub equi)
25
Q

Lymphangitis is caused by which bacteria?

A
  • Corynebacterium pseudotuberculosis (pigeon fever)

- Sporothrix schenkii

26
Q

Rickettsia infects what part of the vasculature?

A

Vascular endothelium

27
Q

Anaplasma infects what part of the vasculature?

A

Erythrocytes, phagocytes, and platelets

28
Q

Ehrliche infects what part of the vasculature?

A

Phagocytic cells

29
Q

Neorickettsia infects what part of the vasculature?

A

Macrophage and enterocytes

30
Q

The order Rickettsiales are obligate intracellular pathogens. True or false?

A

TRUE!!!

31
Q

What causes myositis?

A

Histotoxic Clostridium sp.

32
Q

What causes arthritis?

A
  • Streptococcus
  • Mycoplasma Boris
  • Lyme disease
  • Chlamydia
  • Erysipelothrix
33
Q

What causes osteomyelitis?

A
  • Brucellosis (B. canis)
  • Actinomyces bovis
  • Coccidiodies immitis
34
Q

Clostridium tetani is an aerobic gram positive rod. True or false?

A

False (anaerobic gram positive rod)

35
Q

Clostridium tentani causes what?

A
  • spastic paralysis
36
Q

Clostridium tetani is an enterotoxin. True or false?

A

False (neurotoxin) –> tetanospasmin

37
Q

Where can you find Clostridium tetani?

A

soil and feces

38
Q

What toxin types do you see with Clostridium botulinum?

A
  • Toxin types A-G
39
Q

Clostridium botulinum causes what?

A
  • flasid paralysis

- food poisoning

40
Q

Clostridium botulinum is a neurotoxin. True or false?

A

True

41
Q

Infections of Clostridium botulinum is through wounds or the intestines. True or false?

A

True

42
Q

What is the pathogenesis of Clostridium botulinum?

A

inhibits neurotransmitter release (acetylcholine)

43
Q

Clostridium chauvoei causes what?

A

black leg

44
Q

What are the hosts of Clostridium chauvoei?

A

cattle, sheep and pigs

45
Q

Clostridium septicum causes what?

A
  • malignant edema (through wounds)
  • Braxy (abomastitis)
  • necrotic dermatitis (chickens)
46
Q

What are the hosts of Clostridium septicum?

A
  • cattle, sheep, pigs and chicken
47
Q

Clostridium novyi (A, B and C) causes what?

A

Gas gangrene and black disease (necrotic hepatitis)

48
Q

Clostridium hemolyticum causes what?

A

Bacillary hemoglobinuria (liver affected)

49
Q

What are the hosts of Clostridium hemolyticum?

A

Cattle and sheep

50
Q

Clostridium sordellii causes what?

A

Gas gangrene

51
Q

What are the hosts for Clostridium sordellii?

A

Cattle and sheep

52
Q

Clostridium coliseum causes what?

A

ulcerative enteritis (quail disease)

53
Q

What are the hosts of Clostridium colinum?

A

quail and other birds

54
Q

What are the histotoxic Clostridial species?

A
  • C. Chauvoei
  • C. novyi
  • C. septicum
  • C. perfringens
55
Q

Histotoxic Clostridial species cause what mainly?

A

necrotic myositis

56
Q

How would you diagnose clostridial necrotic myositis?

A

direct flurorescent antibody staining (DFA)

(available for C. chauvoei, C. septicum, C. novyi)

Anerobic culture is not the best

Bacteriology Final (5 decks)

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