Prolonged intestinal absorption of cephradine with chitosan-coated ethylcellulose microparticles in rats.

Abstract:

:Cephradine-containing ethylcellulose microparticles (MPC) were prepared by the solvent evaporation method. Chitosan-coated MPC (Chi-MPC) were prepared by doping MPC with viscous chitosan solution and subsequently drying. When fluorescein isothiocyanate (FITC)-labeled chitosan-coated ethylcellulose microparticles without drug were administered intraduodenally, they moved slowly in the intestine, that is, most of them were retained at the upper and middle parts of the small intestine for more than 8 h, which is considered due to mucoadhesive properties of coated chitosan. When MPC and Chi-MPC was incubated at 37 degrees C in the JP 14 second fluid, pH 6.8, both released the drug slowly with similar release rates. Cephradine solution and suspension, MPC and Chi-MPC were administered intraduodenally to investigate intestinal drug absorption. Only Chi-MPC suppressed the initial plasma level and maintained the plasma concentration for a long time up to 24 h, suggesting Chi-MPC would be useful for prolonged intestinal absorption of cephradine.

journal_name

Biol Pharm Bull

authors

Takishima J,Onishi H,Machida Y

doi

10.1248/bpb.25.1498

subject

Has Abstract

pub_date

2002-11-01 00:00:00

pages

1498-502

issue

11

eissn

0918-6158

issn

1347-5215

journal_volume

25

pub_type

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