S. aureus Flashcards by Vicky 26

Q

Características generales

A

Coagulasa y catalasa +
Gram +
Cocos-racimos
Inmóviles

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Q

Producen esporas

(V/F)

A

FALSO

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Q

Pueden sobrevivir en ambientes con:

A

Altos niveles de sal

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Q

Tienen actividad de endotoxina

A

Peptidoglucanos y ácido lipoteicoico

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Q

¿Qué gen producen?

A

Gen mecA (extracromosómico), que produce la enzima PBP2’ (modificada)

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Q

¿Qué otras cosas son importantes?

A

Proteína A
Biopelícula
Microbiota
Aerobio
MSCRAMM

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Q

¿Por qué se llama así?

A

En el cultivo se ve dorado

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Q

Enfermedadas mediadas por toxinas

A

Sx de piel escaldada
Intoxicación alimentaria
Sx del choque tóxico

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Q

Enfermedades por invasión

A

Impétigo
Foliculitis

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Q

Sx de piel escaldada

A

¡! Lactantes
ETA y ETB - exfoliativas

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Q

Intoxicación alimentaria

A

Enterotoxinas (termoestables)
¡! Alimentos salados, conservas y embutidos

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Q

Sx del choque tóxico

A

TSST-1: superantígeno
¡! Uso de tampones

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Q

Impétigo

A

Boca, nariz o manos
Costras mielicéricas
Niños

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Q

Foliculitis

A

Leve
¡! Rasurado de pelo

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Q

Enfermedades no supurativas

A

Endocarditis
Neumonía de focos múltiples
Infección del sitio de catéter
Bacteriemia
Artritis y osteomeritis

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