5. Family Enterococcaceae Flashcards Preview

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

Microscopic characteristics of the family Enterococcaceae

A

Gram-positive cocci in pairs and short chains

2
Q

Oxygen requirements of the family Enterococcaceae

A

Facultative anaerobe

3
Q

Catalase reaction of the family Enterococcaceae

A

Catalase negative

4
Q

The family Enterococcaceae is normal flora in the

A

GI

Urogenital tract

5
Q

Enterococcus virulence factor for attachment to epithelial cells

A

Fimbriae

6
Q

Enterococcus virulence factor for attachment to the intestinal tract

A

Adhesins

7
Q

Enterococcus virulence factor; inhibits the growth of other intestinal bacteria

A

Bacteriocins

8
Q

Enterococcus virulence factor that hydrolyzes collagen and hemoglobin

A

Gelatinase

9
Q

Colony morphology of Enterococcus

A

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

10
Q

Bile esculin reaction of Enterococcus

A

Bile esculin positive

11
Q

PYR reaction of Enterococcus

A

PYR positive

12
Q

Antibiotics that Enterococcus is resistant to

A
  • Cephalosporins (inherent)
  • Trimethoprim
  • Sulfamethoxazole
13
Q

Antibiotics used to treat Enterococcus infections

A
  • Vancomycin
  • Aminoglycosides
  • Fluoroquinolones
  • Linezolid (newer agent)
  • Daptomycin (newer agent)
14
Q

Most common Enterococcus isolates from humans

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