在肥胖的IR小鼠中,GIPR激素增强TZD诱导的胰岛素敏感性
Ellen C Furber1, Karissa Hyatt1, Kyla Collins1
1Diabetes, Obesity and Complications, Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN.
Diabetes
|November 7, 2023
概括
激活依赖葡萄糖的胰岛素型多受体 (GIPR) 抵消体重增加,并增强肥胖小鼠中罗西格利塔的胰岛素敏感作用. 这种方法可以改善血糖控制和胰岛素敏感性.
科学领域:
- 代谢性疾病是一种代谢性疾病.
- 内分泌学 在内分泌学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 葡萄糖依赖的胰岛素型多受体 (GIPR) 激活增强了GLP-1R激动剂的代谢功效.
- 目前正在研究GIPR激活的广泛代谢益处.
- GIPR激素和 thiazolidinediones (TZDs) 之间的相互作用尚未完全理解.
研究的目的:
- 为了确定GIPR激素作用是否改善了TZD罗西格利塔在肥胖,胰岛素抵抗性小鼠中的疗效.
- 调查GIPR信号传递在罗西格利塔诱导的体重增加,过和血糖控制中的作用.
- 揭示GIPR对能量平衡和胰岛素敏感性的作用机制.
主要方法:
- 在肥胖的胰岛素抵抗性 (IR) 小鼠中利用了遗传和药理方法.
- 服用罗西格利塔和长效GIPR激动剂.
- 在脂肪组织上进行RNA测序.
- 在GIPR-null小鼠和野生类型 (WT) 动物中比较结果.
主要成果:
- 罗西格利塔治疗增加了白色和棕色脂肪中的GIPR mRNA表达.
- 当GIPR-null小鼠接受罗西格利塔治疗时,它们的体重增加与WT小鼠相似.
- 在WT小鼠中,使用GIPR激动剂治疗可以防止罗西格利塔诱导的体重增加和过.
- GIPR激素增强了罗西格利塔的胰岛素敏感作用,增加了棕色脂肪组织中葡萄糖的处置.
结论:
- GIPR激动性可以减轻罗西格利塔的不良影响,例如体重增加和过.
- 结合GIPR激素和罗西格利塔治疗,比单独使用罗西格利塔更有效地改善胰岛素敏感性.
- GIPR激活促进了棕色脂肪组织中有益的代谢和发热基因表达,增强了全身胰岛素敏感性.
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