Effects of hydroxylpropyl-β-cyclodextrin on in vitro insulin stability.
Int J Mol Sci 2009;
10:2031-2040. [PMID:
19564937 PMCID:
PMC2695265 DOI:
10.3390/ijms10052031]
[Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 04/15/2009] [Accepted: 04/17/2009] [Indexed: 11/17/2022] Open
Abstract
The objective of this study was to elucidate the effects of hydroxylpropyl-beta-cyclodextrin (HP-beta-CD) on the in vitro stability of insulin. It was found that HP-beta-CD had positive effects on the stability of insulin in acid and base and under high temperature conditions. Furthermore, use of HP-beta-CD could also increase the stability of disulfide bonds which are important to the conformation of insulin. Through (1)H-NMR experiments it was found that the protective effect of HP-beta-CD was due to complexation with insulin. The results suggest that the presence of HP-beta-CD could improve the stability of insulin in different environments.
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