5. Family Enterococcaceae Flashcards Preview

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Flashcards in 5. Family Enterococcaceae Deck (14):
1

Microscopic characteristics of the family Enterococcaceae

Gram-positive cocci in pairs and short chains

2

Oxygen requirements of the family Enterococcaceae

Facultative anaerobe

3

Catalase reaction of the family Enterococcaceae

Catalase negative

4

The family Enterococcaceae is normal flora in the

GI
Urogenital tract

5

Enterococcus virulence factor for attachment to epithelial cells

Fimbriae

6

Enterococcus virulence factor for attachment to the intestinal tract

Adhesins

7

Enterococcus virulence factor; inhibits the growth of other intestinal bacteria

Bacteriocins

8

Enterococcus virulence factor that hydrolyzes collagen and hemoglobin

Gelatinase

9

Colony morphology of Enterococcus

Small
White colonies
May be nonhemolytic/α-hemolytic/β-hemolytic

10

Bile esculin reaction of Enterococcus

Bile esculin positive

11

PYR reaction of Enterococcus

PYR positive

12

Antibiotics that Enterococcus is resistant to

- Cephalosporins (inherent)
- Trimethoprim
- Sulfamethoxazole

13

Antibiotics used to treat Enterococcus infections

- Vancomycin
- Aminoglycosides
- Fluoroquinolones
- Linezolid (newer agent)
- Daptomycin (newer agent)

14

Most common Enterococcus isolates from humans

E. faecalis
E. faecium
E. avium
E. casseliflavus
E. gallinarum