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Elsevier Bacteriology (RVSP) > 10. Miscellaneous Enteric Pathogens > Flashcards

10. Miscellaneous Enteric Pathogens Flashcards

(50 cards)

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1
Q

Oxygen requirements for Campylobacter spp.

A

Microaerophilic

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2
Q

Temperature where Arcobacter spp. grow

A

15-30°C

Variable form: 35-42°C

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3
Q

Oxygen requirements for Arcobacter spp.

A

Aerobic

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4
Q

Disease caused by Campylobacter jejuni

A

Food-borne gastroenteritis

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5
Q

What structure in the GI tract does C. jejuni attach to?

A

Gut enterocytes

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6
Q

Toxins released by C. jejuni

A

Enterotoxin

Cytotoxin

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7
Q

Temperature for growth of C. jejuni

A

42°C

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8
Q

Atmospheric conditions for growth of C. jejuni

A

5% O2
10% CO2
85% N2

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9
Q

Media used for C. jejuni

A

Campy blood agar

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10
Q

Other selective media for C. jejuni

A
  • Cefoperazone Vancomycin Amphotericin (CVA)

- Skirrow Medium

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11
Q

Microscopic appearance of C. jejuni

A

Curved gram-negative bacilli

Sea gull shape

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12
Q

Colony morphology C. jejuni

A

Flat
Gray
Mucoid
Nonhemolytic colonies

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13
Q

Oxidase reaction of C. jejuni

A

Oxidase positive

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14
Q

Catalase reaction of C. jejuni

A

Catalase positive

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15
Q

Motility of C. jejuni in wet preparation

A

Darting motility

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16
Q

Hippurate hydrolysis reaction of C. jejuni

A

Hippurate hydrolysis positive

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17
Q

Bacteria that was previously classified as Vibrio and shares ecology of the family Vibrionaceae

A

Photobacterium damselae

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18
Q

Oxidase reaction of the Vibrio family

A

Oxidase positive

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19
Q

Oxygen requirements of the Vibrio family

A

Facultative anaerobe

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20
Q

Microscopic appearance of the Vibrio family

A

Gram-negative bacilli

Comma-shaped cells

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21
Q

The zooplankton which Vibrio cholerae is primarily attached to

22
Q

When V. cholerae colonizes the GI tract, it attaches to the

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A

Villi using its pili

23
Q

Two-part toxin produced by V. cholerae

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A

Cholera toxin

24
Q

Clinical disease caused by V. cholerae

25
Lactose fermentation characteristics of V. cholerae
Non-lactose fermenter
26
Color of V. cholerae on TCBS agar
Yellow-green colonies
27
Oxidase reaction of V. cholerae
Oxidase positive
28
Catalase reaction of V. cholerae
Catalase positive
29
String test reaction of V. cholerae
String test positive
30
Enumerate the halophilic Vibrio organisms
V. parahaemolyticus V. vulnificus V. alginolyticus
31
Disease caused by V. parahaemolyticus
Gastroenteritis from seafood
32
Disease caused by V. vulnificus
Septicemia from raw shellfish (lactose fermenter)
33
Disease caused by V. alginolyticus
Wound and ear infections
34
Cytotoxic enterotoxin produced by Aeromonas hydrophila
Aerolysin
35
Hemolysis characteristics of Aeromonas hydrophila
β-hemolysis
36
Microscopic appearance of Aeromonas hydrophila
Gram-negative bacilli (straight)
37
Lactose fermentation characteristics of A. hydrophila
Lactose fermenter
38
Oxidase reaction of A. hydrophila
Oxidase positive
39
Indole reaction of A. hydrophila
Indole positive
40
Associated with gastric cancer
Helicobacter
41
Produced by Helicobacter; converts urea to ammonia and bicarbonate
Urease
42
Functions of ammonia
- neutralizes stomach acid | - toxic to epithelial cells
43
Enzymes produced by Helicobacter
- protease - catalase - phospholipases
44
Oxygen requirements of Helicobacter
Microaerophilic (5% O2, 10% CO2, 85% N2)
45
Temperature requirements for Helicobacter
35°C with high humidity
46
Oxidase reaction of Helicobacter
Oxidase positive
47
Catalase reaction of Helicobacter
Catalase positive
48
Urease reaction of Helicobacter
Urease positive
49
The urease produced by Helicobacter converts urea to
Ammonia | Bicarbonate
50
Genera under miscellaneous enteric pathogens
Campylobacter Vibrio Aeromonas Helicobacter

Elsevier Bacteriology (RVSP) (34 decks)

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