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中国临床药理学与治疗学 ›› 2007, Vol. 12 ›› Issue (1): 28-31.

• 基础研究 • 上一篇    下一篇

前胰高血糖素样肽-1 对非糖尿病小鼠降糖作用的实验研究

马雪1, 惠宏襄2,3, 刘振国1, 吴玉梅1, 孟嘉1, 罗晓星1   

  1. 1第四军医大学药学系药理教研室, 西安 710032, 陕西;
    2加利福尼亚大学医学部, 3内分泌糖尿病核代谢疾病所Cedars-Sinai 医学中心, 洛杉矶 90048, 美国
  • 收稿日期:2006-09-27 修回日期:2006-11-03 出版日期:2007-01-26 发布日期:2020-10-26
  • 通讯作者: 罗晓星, 男, 教授, 博士生导师, 从事分子药理学及新药研究。Tel:029-84774591 E-mail:xxluo3@fmmu.edu.cn
  • 作者简介:马雪, 女, 硕士研究生, 助教, 从事分子药理学研究。Tel:029-84774555  E-mail:snowm123@hotmai l.com
  • 基金资助:
    陕西省国际合作重点项目基金资助(05D018); 西安市重大攻关专项项目基金资助(ZX06015)

Effects of glucagon-like peptide-1 prodrug on glycemia control in non-diabetic mice

MA Xue1, HUI Hong-xiang2,3, LIU Zhen-guo1, WU Yu-mei1, MENG Jia1, LUO Xiao-xing1   

  1. 1Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi' an 710032, Shanxi, China, Los Angeles, CA90048, USA,
    2Department of Medicine, University of California; 3Division of Endocrinology &Diabetes and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
  • Received:2006-09-27 Revised:2006-11-03 Online:2007-01-26 Published:2020-10-26

摘要: 目的: 观察胰高血糖素样肽-1(glucagon-likepeptide-1,GLP-1)的前体药物前胰高血糖素样肽-1(Pro-GLP-1)对非糖尿病小鼠的血糖和血清胰岛素水平的影响。方法: C57BL 6 小鼠皮下注射不同剂量Pro-GLP-1, 不同时间间隔取血测定血糖及血清胰岛素水平。结果: 非糖尿病小鼠注射Pro-GLP-1 后,血糖血清和胰岛素水平均无明显改变;给予糖负荷后的小鼠Pro-GLP-1 呈剂量依赖性降低血糖浓度, 同时升高血清胰岛素水平。等剂量Pro-GLP-1 的降糖作用较GLP-1 作用强。于第一次糖负荷后150 min给予第二次糖负荷, Pro-GLP-1 仍能发挥其降糖作用。结论: Pro-GLP-1 通过葡萄糖依赖方式促进胰岛素分泌, 剂量依赖性降低过高血糖, 不降低正常血糖, 其降糖作用可以维持3 h 以上。

关键词: 糖尿病, 胰高血糖素样肽-1, 前体药物, 血糖, 胰岛素

Abstract: AIM: To study the effects of proglucagonlike peptide-1, a long-acting prodrug glucagon-like peptide-1, on regulations of blood glucose levels and insulin secretion in non-diabetic mice. METHODS: Pro-GLP-1 was administered via scroute.Blood glucose levels were measured using a blood glucose meter.Plasma insulin concentrations were determined by ELISA. RESULTS: In C57BL 6 mice, native GLP-1 and Pro-GLP-1 decreased blood glucose, but Pro-GLP-1 had a more evident action.A single injection of Pro-GLP-1 dose-dependently reduced higher glucose following glucose load at least 3 h,and it had no effect on normal blood glucose.Moreover, it dose-dependently stimulated insulin secretion and significantly improved glucose tolerance after glucose challenge. CONCLUSION: These results demonstrate that Pro-GLP-1 facilitates a dose-dependently significant and prolonged glucose-lowering effect.

Key words: diabetes, glucagon-like peptide-1, prodrug, blood glucose, insulin

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