Comprimidos mucoadherentes bicapa para la administración bucal de carvedilol: Estudios in vitro e in vivo

Autores/as

  • PD YEDURKAR Drug Delivery Research Laboratory, TIFAC Center of Relevance and Excellence in NDDS, G. H. Patel Building, Pharmacy Department, Faculty of Tech. and Engg., The M. S. University of Baroda, Vadodara – 390 002, Gujarat, India.
  • MK DHIMAN Drug Delivery Research Laboratory, TIFAC Center of Relevance and Excellence in NDDS, G. H. Patel Building, Pharmacy Department, Faculty of Tech. and Engg., The M. S. University of Baroda, Vadodara – 390 002, Gujarat, India.
  • KK SAWANT Drug Delivery Research Laboratory, TIFAC Center of Relevance and Excellence in NDDS, G. H. Patel Building, Pharmacy Department, Faculty of Tech. and Engg., The M. S. University of Baroda, Vadodara – 390 002, Gujarat, India.

Palabras clave:

Comprimidos mucoadherentes bicapa, Carvedilol

Resumen

Se diseñó un sistema mucoadherente bicapa de carvedilol para administración bucal, con el objetivo de mejorar labiodisponibilidad y conseguir una liberación sostenida. Como portadores se utilizaron Carbopol 934P e hidroxipropilmetilcelulosaK4M, y las formulaciones obtenidas se sometieron a estudios de pH superfi cial, índice de expansióny bioadhesión y liberación de fármaco in vitro. Se analizó la cinética de los datos de liberación de fármaco in vitro,mediante ajuste en modelos de orden cero, primer orden, Higuchi, Hixson-Crowell y Korsmeyer Peppas. El estudiodel rendimiento farmacocinético in vivo del lote optimizado se realizó en conejos. Los datos obtenidos de la optimizacióny evaluación del sistema revelaron que las formulaciones presentaban índices de expansión y parámetrostecnológicos satisfactorios. La formulación F5 presentó el mayor grado de bioadherencia (3.5 ± 0.6 N) y su retenciónen la mucosa bucal porcina fue de 7 h. El ajuste al modelo de los datos de liberación in vitro demostró que seguíanun patrón de liberación de orden cero con un comportamiento de liberación no Fickian, es decir, con valores de nentre 0.71 y 1.17, lo que indica que la liberación fue una combinación de erosión del comprimido y difusión desdela matriz. Los valores farmacocinéticos obtenidos presentaron una diferencia signifi cativa entre Cmax, Tmax y losvalores del área bajo la curva de las formulaciones bucal y oral, es decir, un aumento de la biodisponibilidad enlos comprimidos bucales en comparación con la formulación oral. Las curvas de concentración en plasma de loscomprimidos bucales evidenciaron claramente un comportamiento de liberación sostenido.

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Publicado

2007-09-20

Cómo citar

1.
YEDURKAR P, DHIMAN M, SAWANT K. Comprimidos mucoadherentes bicapa para la administración bucal de carvedilol: Estudios in vitro e in vivo. Ars Pharm [Internet]. 20 de septiembre de 2007 [citado 22 de diciembre de 2024];48(3):259-74. Disponible en: https://revistaseug.ugr.es/index.php/ars/article/view/4990

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