Staphylococcus Aureus Flashcards

1
Q

Microbiologia del Staphylococcus aureus

A

Es coco gram positivo, catalasa positivo, coagulasa positivo

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2
Q

S. aureus es una bacteria presente en

A

La microbiota

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3
Q

Los coagulasa _____ son los mas abundantes en la superficie de la piel, poco patogénicos, poco factor de virulencia, menor mortalidad y son oportunistas.

A

Coagulasa negativos

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4
Q

Cual es la formación de s. aureus

A

Parejas, tetricas y en racimos de uvas

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5
Q

Los S. aureus son móviles o inmóviles?

A

Inmóviles

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6
Q

Los s. aureus forman esporas?

A

No.

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7
Q

Tienen capsula completa?

A

No, es incompleta.

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8
Q

S. Aureus se protege de los peroxisomas (peróxido de hidrogeno) hidrolizándolos en..

A

Agua y oxigeno

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9
Q

Una coagulasa positiva al estar en contacto con suero convierte fibrinogeno en ____, y forman _____

A

fibrina, coágulos.

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10
Q

Cómo es la pared de s. aureus al ser una gram positiva?

A

Pared gruesa de peptidoglucanos.

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11
Q

PBP2’

A

Proteina q se une a la penisilina

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12
Q

La capsula protege de..

A

Fagocitosis y opsonización

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13
Q

La capsula contiene..

A

Acidos lipoteitoicos, proteina A

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14
Q

Donde esta la proteina A

A

En la pared del s. aureus

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15
Q

Proteina A se une al…

A

Receptor Fc de las inmunoglobulinas, union no inmune.

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