相关实验视频

Updated: Jun 28, 2025

A RAPID Method for Blood Processing to Increase the Yield of Plasma Peptide Levels in Human Blood

A RAPID Method for Blood Processing to Increase the Yield of Plasma Peptide Levels in Human Blood

Published on: April 28, 2016

刺激肠道GIP释放可以减少小鼠的食物摄入量和体重

Jo E Lewis¹, Danae Nuzzaci¹, Paula-Peace James-Okoro¹

¹Institute of Metabolic Science-Metabolic Research Laboratories & MRC-Metabolic Diseases Unit, University of Cambridge, Cambridge, UK.

Molecular metabolism

|April 23, 2024

概括

葡萄糖依赖性胰岛素型多 (GIP) 调节小鼠的食欲和体重. 激活GIP产生的K细胞抑制了食物摄入,揭示了肠-大脑轴对代谢疗法至关重要.

科学领域:

代谢内分泌学代谢内分泌学
肠-大脑轴研究研究
肥胖和糖尿病的治疗方法治疗方法

背景情况:

葡萄糖依赖性胰岛素型多 (GIP) 是一种激素激素,刺激葡萄糖依赖性胰岛素分泌.
在食欲调节中GIP的作用是有争议的,与其对应物葡萄糖类-1 (GLP-1) 不同.
双GLP-1/GIP受体激动剂显示出优异的体重减轻,这表明GIP对食欲控制的贡献.

研究的目的:

研究肠道释放的GIP在食欲调节中的生理作用.
通过GIP调解的肠-大脑轴,使用一种新的小鼠模型来探索.

主要方法:

用DREADD激活的GIP表达K细胞 (GIP-Dq) 生成一个小鼠模型.
刺激GIP-Dq小鼠以模仿食后GIP释放.
使用GIP受体 (GIPR) 抗剂和交叉遗传模型进行验证.

主要成果:

在瘦小鼠中,GIP-Dq刺激增加了血GIP,改善了葡萄糖耐受性,并强烈抑制了食物摄入.
通过GIPR抗剂阻止了食物摄入抑制,证实了GIP调解.
慢性K细胞激活减少了饮食诱导的肥胖小鼠的食物摄入量和减弱的体重增加.

结论:

这些研究确定了一个生理性肠-大脑GIP轴,该轴调节小鼠的食物摄入量.
除了胰岛素分泌之外,GIP具有多方面的代谢作用,影响食欲和体重.
这些发现对于开发针对肥胖和糖尿病的GIPR向疗法至关重要.

关键词:

糖尿病糖尿病糖尿病肠内分泌细胞是内分泌细胞.养行为养行为在GIP的基础上,GIP是GIP.这就是GLP-1.肥胖问题肥胖问题

更多相关视频

Body Composition and Metabolic Caging Analysis in High Fat Fed Mice

Body Composition and Metabolic Caging Analysis in High Fat Fed Mice

Published on: May 24, 2018

Assessment of the Metabolic Effects of Isocaloric 2:1 Intermittent Fasting in Mice

Assessment of the Metabolic Effects of Isocaloric 2:1 Intermittent Fasting in Mice

Published on: November 27, 2019

相关概念视频

Regulation of Food Intake

Regulation of Food Intake

Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...

Glucagon-like Receptor Agonists

Glucagon-like Receptor Agonists

Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...

Hormonal Regulation

Hormonal Regulation

Hormones regulate a significant portion of digestion through activation of the neuroendocrine system. The neuroendocrine system of digestion contains many different hormones all with multiple functions that are both, directly and indirectly, involved in digestion.