Vidrio colera Flashcards

1
Q

se separaron de la familia enterobacteria por la

A

reaccion positiva a la oxidasa
flagelos polares

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2
Q

son sensibles a

A

acidos grasos, se requiere de un gran inoculo

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3
Q

la mayoria tiene

A

flagelos polars
pili

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4
Q

-pilus corregulado por la toxina TCP: islote de patogenicidad de vidrio
-bacteriofago ctx: codifica las subunidades de la toxina
-factores de virulencia: gen ace (enterotoxina accesoria del colera), gen zot (toxina de la zonula oclusiva) y gen cep (proteinas quimiotacticas) O1 Y O139, neuroaminidasa, proteina quimiotactica

A

v.colera

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5
Q

sintetizan la toxina colera

A

v colera o1 y o139

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6
Q

serotipos hikoja es un estado de transicion entre

A

inaba y ogawa

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7
Q

vulfinicus y coler no O1 producen

A

capsula de polisacaridos acidas importantes para las infecciones diseminadas

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8
Q

vidrio o1 no produce

A

capsula, por lo que las infecciones provocadas no se extienden mas alla de los limites del intestino

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9
Q

v.colera y parahaemoliticus poseen

A

2 cromosomas circulares

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10
Q

factor de virulencia: hemolisina kanawa, sistema de secrecion tipo lll
-tdh
-colonias b-hemoliticas son kanawa positivas

A

v. parahaemoliticus

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11
Q

factor de virulencia: capsula de polisacaridos, citolisinas, proteasam colagenasa
-evaden respuesta inmunitaria por induccion de apoptosis a macrofagos

A

v.vulnificus

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12
Q

toxina colera es similiar

A

a la enterotoxina termolabil de e.coli

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13
Q

celulas de v.colera son capaces de adherirse a la capa de celulas mucosas por

A

-TCP
-proteinas quimitacticas de genes cep

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14
Q

v.colera
las cepas no adherentes son

A

incapaces de establcer una infeccio

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15
Q

heces en agua de arroz
diarrea acuosa
vomitos de comienzo agudo
deshidratacion grave
acidosis metabolica
hipopotasemia
shock hipovolemico

A

colera

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16
Q

tamaño

A

0.5-1.5um por 3.0um

17
Q

tx

A

-reposicion de liquidos y electrolitos
-secundario: antibiotico (azitromicina)

18
Q

resistencia a macrolifos (azitromicina) es

A

infrecuente