Antivirales Flashcards

1
Q

Aciclovir

Mecanismo de acción

A

Análogo de guanosina
3 fosforilaciones: 1. Timidina cinasa y las otras dos celulares

Inhibe síntesis: ADN pol, competencia a incorporarse al ADN viral y finalizados de cadena

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2
Q

Aciclovir

Resistencia

A

Mutación de timidina cinasa o d unión a ADN pol

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3
Q

Aciclovir

Uso

A

Herpes simple, último trimestre de embarazo, encefalitis y queratoconjuntivitis
NO en varicela no complicada

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4
Q

Ganciclovir

Diferencias con aciclovir

A

Superior para CMV

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5
Q

Ganciclovir

Mecanismo de acción

A

Compite con ADN Pol

Usa fosfotransferasa

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6
Q

Ganciclovir

Resistencia

A

Gen UL97 de fosfotransferasa

Mutación ADN Pol

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7
Q

Ganciclovir

Uso

A

Retinitis por CMV

Profilaxis en transplantados

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8
Q

Ganciclovir

Efectos adversos

A

Mielosupresion (neutropenia)

SNC

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9
Q

Amantadina

Generalidades

A

Para influenza A

Rimantadina es + activa

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10
Q

Amantadina

Mecanismo de acción

A

Inhibe pérdida de cubierta

Une M2 impide entrada de H

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11
Q

Amantadina

Resistencia

A

Mutación M2
Confiere resistencia cruzada con rimantadina

Resistencia en +30%

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12
Q

Oseltamivir

Mecanismos

A

Inhibe neuraminidasas A y B

Inhibe vieja resistentes a amantadina, rimantadina y zanamivir

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13
Q

Oseltamivir

Resistencia

A

Mutación en hemaglutinina y neuraminidasa

Resistencia de influenza A es 100%

Disminuye complicaciones

Administración con amantadinico

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