RELEASE OF NIFEDIPINE THROUGH CROSS-LINKED CHITOSAN MEMBRANES

被引:40
作者
THACHARODI, D [1 ]
RAO, KP [1 ]
机构
[1] CENT LEATHER RES INST,DIV BIOMAT,MADRAS 600020,TAMIL NADU,INDIA
关键词
CHITOSAN; NIFEDIPINE; CROSS-LINKING; PERMEABILITY;
D O I
10.1016/0378-5173(93)90209-X
中图分类号
R9 [药学];
学科分类号
1007 ;
摘要
The permeability characteristics of a chitosan membrane using the anti-hypertensive drug nifedipine have been investigated. Chitosan membranes were crosslinked with different concentrations of glutaraldehyde and the effect of crosslinking on the permeability characteristics was studied. Permeation studies were carried out in static glass diffusion cells. With increasing degree of crosslinking a definite decrease in the diffusion coefficient, equilibrium swelling, partition coefficient and permeability coefficient was observed. These data supported the involvement of both pore and partition mechanisms in the transport of a hydrophobic drug such as nifedipine through chitosan/crosslinked chitosan membranes. It has been shown that by altering the permeability of chitosan membranes by different degrees of crosslinking the release of bioactive agents could be programmed.
引用
收藏
页码:33 / 39
页数:7
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