Optimization of a floating osmotic pump system of ambroxol hydrochloride using central composite design-response surface methodology and its pharmacokinetics in Beagle dogs / 药学学报
Acta Pharmaceutica Sinica
;
(12): 1507-1514, 2011.
Artigo
em Chinês
| WPRIM
| ID: wpr-323093
ABSTRACT
This paper reported that a new type of floating osmotic pump of ambroxol hydrochloride was designed. Third method apparatus (Chinese Pharmacopeia 2010, appendix XD) was employed to simultaneously evaluate the release and floating behavior in vitro. The system was optimized using central composite design-response surface methodology. Similar factor (f2) between the release profile of self-made formulation and the target release profile was chosen as dependent factor. The amount of glucose (A, mg), pore former (B, %) and weight of coating (C, %) were employed as independent factors. Optimized formulation was A (100.99 mg), B (1.70%), C (4.21%). The value of f2 (89.14) was higher than that of market capsules (69.02) and self-made tablets (72.15). It was showed that self-made capsules possessed character of zero-order release (r = 0.994 4) and drug release completely (>90%). It was showed in result of in vivo study that tmax and Cmax of self-made capsules were significantly lower than that of market capsules and self-made tablets. The correlation coefficient between the fraction of absorption in vivo and the release rate in vitro was 0.985 1, and relative bioequivalence of self-made capsules was 110.77%. Accordingly, self-made capsules displayed obviously characteristics of controlled release both in vivo and in vitro.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Osmose
/
Pressão Osmótica
/
Solubilidade
/
Cápsulas
/
Farmacocinética
/
Equivalência Terapêutica
/
Distribuição Aleatória
/
Química
/
Administração Oral
/
Porosidade
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
Idioma:
Chinês
Revista:
Acta Pharmaceutica Sinica
Ano de publicação:
2011
Tipo de documento:
Artigo
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