"Estafilococos"
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Estafilococos
Por Alicia Hernández ReturetaSección 30414 de Noviembre de 2011
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Staphylococcus Del griego σταφυλή, staphylē, "racimo de uvas“
y κόκκος, kókkos, "gránula"
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40ºc
18ºc
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40 especies 24 subespecies
S. aureus S. epidermidis S. haemolyticus
S. saprophyticus S. lugdunensis
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Fisiología yestructura
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Cápsula y capa de lipopolisacárido…
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Péptidoglucano…
Ácido N-acetilmurámico
N-acetilglucosamina
• Formación de pirógenos endógenos
• Activación del complemento
• Producción de IL-1 por los monocitos
• Agregación de leucocitos PMN
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Ácidos teicoicos…
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Coagulasa y Proteína A…
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Patogenia yenfermedad
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Toxinas citolíticas
• α• β• δ• γ
• Leucocidina de Panton- Valentine (P-V)
• A• B
Toxinas exfoliativas
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Enterotoxinas
• A• B• C• D• E• G• H• I
• Toxina 1 del síndrome de Shock Tóxico (TSST1)
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Enfermedadesclínicas
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Síndrome de la piel escaldada por estafilococos (SPEE)
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Impétigo ampolloso
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Síndrome de Shock tóxico
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Cultivo
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Agar de sangre
Agar sal y manitol