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Inicio Enfermedades Infecciosas y Microbiología Clínica Maraviroc: farmacocinética, interacciones y mecanismo de acción
Información de la revista
Vol. 26. Núm. S11.
Maraviroc, el primer antagonista de los receptores de VIH
Páginas 12-16 (octubre 2008)
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Vol. 26. Núm. S11.
Maraviroc, el primer antagonista de los receptores de VIH
Páginas 12-16 (octubre 2008)
Acceso a texto completo
Maraviroc: farmacocinética, interacciones y mecanismo de acción
Pharmacokinetics, interactions and mechanism of action of maraviroc
Visitas
12254
Vicente Soriano
Autor para correspondencia
vsoriano@dragonet.es

Correspondencia: Departamento de Enfermedades Infecciosas. Hospital Carlos III. Sinesio Delgado, 10. 28029 Madrid. España.
, Eva Poveda
Departamento de Enfermedades infecciosas. Hospital Carlos III. Madrid. España
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Resumen
Bibliografía
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Maraviroc (MVC, Celsentri®) es un inhibidor alostérico y reversible del receptor de quimiocinas CCR5. MVC es el primer antagonista de CCR5 comercializado y el único inhibidor de la entrada del VIH de administración oral. Se ha aprobado para el tratamiento de pacientes VIH+ adultos con exposición previa a otros antirretrovirales. Debe prescribirse en combinación con otros antirretrovirales. MVC inhibe específicamente la replicación de variantes virales R5-trópicas mediante su unión al dominio transmembrana del receptor CCR5. MVC se absorbe rápidamente tras su administración oral, y alcanza la Tmáx entre las 0,5 y 4 h después de una dosis oral de 300 mg. El aclaramiento renal es aproximadamente de 10-12l/h. MVC es sustrato del citrocromo P450 isoenzima 3A4, de modo que requiere ajuste de dosis cuando se coadministra con otros fármacos inductores o inhibidores del CYP3A4. De igual forma, se recomienda un ajuste de la dosis de MVC en pacientes con insuficiencia renal (aclaración de creatinina < 80ml/min) sólo si toman inhibidores del CYP3A4.

Palabras clave:
Antagonistas de CCR5
Maraviroc
VIH
Farmacocinética
Interacciones farmacológicas

Maraviroc (MVC, Celsentri®) is an allosteric and reversible inhibitor of the CCR5 chemokine coreceptor. MVC is the first marketed CCR5 antagonist and the only oral entry inhibitor approved so far for the treatment of HIV infection. It has been approved for adults with previous antiretroviral exposure. MVC exclusively inhibits the replication of R5-tropic HIV-1 variants after binding to the transmembrane CCR5 receptor cavity. MVC is rapidly absorbed following oral administration, and plasma Tmax is achieved within 0.5-4hours after a 300 mg dose. Renal clearance is approximately 10-12L/h. MVC is a substrate of the cytochrome P450 isoenzyme 3A4; therefore dose adjustments are required when co-administrated with other drugs that induce or inhibit CYP3A4. In addition, MVC dose adjustments are advised in patients with renal failure (CLcr <80ml/min) only if they receive CYP3A4 inhibitors.

Key words:
CCR5 antagonists
Maraviroc
HIV
Pharmacokinetics
Drug interactions
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Bibliografía
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Copyright © 2008. Elsevier España S.L.. Todos los derechos reservados
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