Manosroi A, Manosroi J. Microencapsulation of human insulin DEAE-dextran complex and the complex in liposomes by the emulsion non-solvent addition method.
J Microencapsul 1997;
14:761-8. [PMID:
9394257 DOI:
10.3109/02652049709006826]
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Abstract
Human insulin-DEAE (diethyl amino ethyl) dextran complex and human insulin DEAE-dextran complex in liposomes were encapsulated in cellulose acetate butyrate (CAB) microcapsules by the emulsion non-solvent addition method. The ratio of core-to-coat used was 1:1. The average diameters of the complex microcapsules and the complex liposome microcapsules were 239.5 +/- 77.5 and 182.9 +/- 52.2 microns respectively. In vitro dissolution studies of both types of microcapsules in simulated intestinal fluid at pH 7.2 showed a sustained release of the complex and the complex liposome microcapsules with t50 = 1.5 h and 4 h respectively. This study can be applied to the further development of oral formulations of human insulin liposomes for diabetic treatment.
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