Unidad 5 Flashcards

1
Q

acidos teicoicos

A

adherencia a las proteinas de la matriz del hospedero

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2
Q

proteina A

A

afinidad al receptor FC de las inmunoglobulinas

evita la eliminacion x anticuerpos

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3
Q

ETA

A

Termoestable
gen cromosomico

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4
Q

ETB

A

termolabil y mediada x plasmido

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5
Q

PATOGENICIDAD de aureus

A

1.toxinas exfoliativas ETA y ETB
2. Toxina 1 SST
3. Enterotoxinas A a E G a I
4. Citoliticas

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6
Q

Toxinas citoliticas alfa

A

altera musculo liso

toxica para eritrocitos, leucocitos, hepatocitos y plaquetas

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7
Q

citotoxina beta

A

toxica macrofagos, fibroblastos, leucocitos y ertitrocitos

esfingomielinasa C

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8
Q

citotoxina delta

A

daño estructural a membrana intracelular

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9
Q

citotoxina gamma

A

componentes:
S-lenta
F-rapida

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10
Q

citotoxina leucocidina

A

S-elucion lenta
F-elucion tapida
carece de act hemolitica

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11
Q

enzimas de s aureus

A

coagulasa
hialuronasa
fibronilisina
lipasa
nucleasa

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12
Q

coagulasa

A

Unión al fibrinógeno y lo convierte en fibrina insoluble, los estafilococos se agregar o
forman grupos.

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13
Q

hialuronidasa

A

Hidroliza los ácidos hialurónicos del tejido conjuntivo

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14
Q

fibrinolisina

A

disuelve los coagulos de fibrina

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15
Q

lipasa

A

hidroliza lipidos

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16
Q

nucleasa

A

hidroliza lipidos

17
Q

s aureus epidemiologia

A

microbiota de piel y mucosas

sobreviven a superficies secas

persona a persona

18
Q

tx para s aureus

A

oral:
1. Trimetoprima-sulfametoxazol
2. Doxiciclina
3. Clindamicina
intravenoso:
1. Vancomicina
1. SAIV
2. SARV(vanA)

19
Q

S. haemolyticus

A
  • Bacteriemia
  • Endocarditis
  • Infecciones articulares
  • Infecciones del tracto urinario
  • Infecciones de heridas
20
Q

S. lugdunensis

A
  • Endocarditis (prótesis valvulares)
  • Artritis
  • Bacteriemia
  • Infecciones del aparato genitourinario
  • Infecciones oportunistas
21
Q

S. saprophyticus

A
  • Infecciones tracto urinario
  • Infecciones oportunistas
22
Q

S. epidermidis

A
  • Bacteriemia
  • Endocarditis
  • Heridas quirúrgicas
  • Infecciones tracto urinario
  • Infecciones oportunistas de los catéteres,
    anastomosis, prótesis y dispositivos de
    diálisis peritoneal