Pharmacodynamics of compound danshen pH-dependent delayed release pellets in dogs / 药学学报
Acta Pharmaceutica Sinica
; (12): 1075-1079, 2005.
Article
em Zh
| WPRIM
| ID: wpr-253528
Biblioteca responsável:
WPRO
ABSTRACT
<p><b>AIM</b>To prepare the compound danshen pH-dependent delayed release pellets and filled them in capsules and then study thier pharmacodynamics.</p><p><b>METHODS</b>The pH-dependent delayed release pellets were prepared by coating with HPMC, Eudragit L-30D-55 and Eudragit L100-Eudragit S100 (1:6), separately, and mixed in proper proportion to prepare the two pH-dependent delayed release systems T1 and T2. The release of delayed release pellets was determined according to the method of China Pharmacopoeia (2000) in the simulated gastrointestinal pH conditions. The pharmacodynamic,parameters were evaluated by serum pharmacology method.</p><p><b>RESULTS</b>The compound danshen pH-dependent delayed release pellets were prepared with the characteristics of pH dependent delayed release profile in vitro. In single oral dose, the pharmacodynamic parameters of rapid release tablets R Emax (%) and Tmax (h) were 34.63% and 0.58 h, respectively. Tmax S of delayed-release pellets T1 and T2 were extended to 2.42, 3.17 h and Emax S (%) were declined to 13.57%, 14.52%. The relative bioavailabilities of T1 and T2 were 99.3%, 133.6% , respectively. In multiple oral doses of R the pharmacodynamic parameter of DF was 7.32 and those T1, T2 DF were 3.40, 3.03, respectively.</p><p><b>CONCLUSION</b>The compound danshen pH-dependent delayed release capsules have characteristics of pH dependent releasing in vitro and characteristics of delayed release in vivo. In multiple oral (loses the DF of delayed release capsules was lower than that of rapid release tablet at steady state.</p>
Texto completo:
1
Base de dados:
WPRIM
Medicinas Tradicionais:
Medicinas_tradicionales_de_asia
/
Medicina_china
Métodos Terapêuticos e Terapias MTCI:
Terapias_biologicas
Assunto principal:
Farmacologia
/
Plantas Medicinais
/
Ácidos Polimetacrílicos
/
Medicamentos de Ervas Chinesas
/
Disponibilidade Biológica
/
Distribuição Aleatória
/
Química
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Área Sob a Curva
/
Codonopsis
/
Preparações de Ação Retardada
Tipo de estudo:
Prognostic_studies
Idioma:
Zh
Revista:
Acta Pharmaceutica Sinica
Ano de publicação:
2005
Tipo de documento:
Article