Enterococos Flashcards

1
Q

Grupo de Lancefield

A

Grupo D
S. viridans –> grupo S. bovis

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2
Q

Morfología

A

Pares (diplococos) o cadenas cortas

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3
Q

Especies principales

A

38 especies
- E. faecalis
• E. faecium
• E. gallinarum
• E. casseliflavus

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4
Q

Forman o no forman parte de microbiota

A

Forman parte de la microbiota del colon
E. faecalis > E. faecium

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5
Q

Metabolismo

A

Aerobios y anaerobios

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6
Q

Hemólisis

A

Gamma

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7
Q

Temperatura y pH

A

• 10 - 45°C
• 4.6 - 9.9

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8
Q

Los enterococcus crecen en altas concentraciones de…

A

Sal y en presencia de sales biliares

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9
Q

La prueba positiva para los enterococcus es…

A

Prueba de bilis - esculina

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10
Q

En qué consiste la prueba de Bilis - Escalina

A

Hidrólisis de esculina reacciona con hierro y tiñe medio marrón oscuro
Los Enterococos no se disuelven en bilis

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11
Q

Enterococcus son resistentes a

A

Optoquina

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12
Q

Producen o no producen toxinas

A

NO producen toxinas

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13
Q

Factores de virulencia

A

• Adhesinas de superficie
• Biofilm
• Resistencia a antibióticos comunes

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14
Q

Su patogenicidad se relaciona a factores como:

A
  • Cuidados hospitalarios
  • Antibióticos de amplio espectro
  • Catéteres, sondas, dispositivos
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15
Q

Enfermedades

A

• Infecciones de vías urinarias: cistitis y pielonefritis
• Infecciones peritoneales polimicrobianas: después de cirugía/traumatismo
• Endocarditis

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16
Q

Resistencia de Staph. aureus a vancomicina (gen mecA) fue transmitida:

A

Por enterococos por medio de un transposón