57. Genera Bacteroides, Dichelobacter and Prevotella. Flashcards Preview

Bacto specific oral > 57. Genera Bacteroides, Dichelobacter and Prevotella. > Flashcards

Flashcards in 57. Genera Bacteroides, Dichelobacter and Prevotella. Deck (3)
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1
Q

Habitat, Morphology and Staining?

A

BACTEROIDES, DICHELOBACTER, PREVOTELLA

  1. Habitat: • alimentary tract, respiratory way, genitals, mucous membranes, water
  2. Morphology: • 3-5 µm rod, fimbria
  3. Staining: • Gram negative, • irregular staining
2
Q

Culture, Biochemistry and Pathogenecity?

A
  1. Culture: • fastidious, obligate anaerobic
  2. Biochemistry: • more active, proteases, keratinase (D. nodosus) 88
  3. Pathogenicity: • facultative pathogens, necrosis, abscesses
3
Q

Species and Pathogenecity?

A

Species:

  • B. fragilis: • mainly human, gut flora, appendicitis, wounds
  • Dichelobacter (Bacterioides) nodosus • fimbria • proteolysis, keratinase, • sheep foot rot
  • Prevotella (B.) melaninogenica: • dog, cat: putrid inflammations

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