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Gliquidone-stimulated insulin secretion features are different from glibenclamide in HIT-T15 cells
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF DIABETES
- Issue:
- 7
- DOI:
- 10.3969/j.issn.1006-6187.2009.07.005
- Key Word:
- 胰岛素;HIT-T15细胞;格列喹酮;格列本脲;格列齐特
Abstract： 目的 通过观察不同葡萄糖浓度下格列喹酮(Glq)刺激HIT-T15细胞分泌胰岛素的作用,了解Glq对β细胞的刺激模式.方法 HIT-T15细胞孵育于5、10、15mmol/L葡萄糖浓度的培养基中,8小时后加入Glq、格列本脲(Glb)、格列齐特(Glc),分别在不同时间点收集培养液,测定药物刺激前后的胰岛素分泌水平.结果 在三种糖浓度下,Glq刺激的胰岛素分泌高峰均在加药后10分钟,在30分钟时又有一稍低的第二峰,随后逐渐下降,至180分钟后分泌速率为基础值的1.1～1.2倍;Glb呈单相分泌峰,峰值出现在45分钟,随后分泌速率逐渐下降,至180分钟后仍有基础值的1.5倍;在10 mmol/L糖浓度组,Glq刺激的胰岛素浓度时间曲线下面积(AUC)更小.Glc的分泌曲线类似Glq. 结论 Glq与Glb对β细胞的刺激作用模式不同,前者较后者胰岛素分泌达峰时间更快、作用时间更短,AUC更小.
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