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相关概念视频

Glucagon-like Receptor Agonists01:24

Glucagon-like Receptor Agonists

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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...
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Glucose Homeostasis: Pancreatic Islets and Insulin Secretion01:27

Glucose Homeostasis: Pancreatic Islets and Insulin Secretion

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The pancreatic islets comprising only 1%-2% of the volume are highly vascularized and innervated mini-organs. They contain five endocrine cell types, including β cells that secrete insulin, which is synthesized as a single polypeptide chain, preproinsulin, processed to proinsulin, and finally to insulin and C-peptide. This process is complex and regulated, involving the Golgi complex, the endoplasmic reticulum, and the secretory granules of the β cell.
Insulin and C-peptide are...
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相关实验视频

Updated: Jul 8, 2025

A Method for Murine Islet Isolation and Subcapsular Kidney Transplantation
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A Method for Murine Islet Isolation and Subcapsular Kidney Transplantation

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生殖线和有条件的 ghrelin 淘汰会增加小岛的大小.

Sean M Tatum, William L Holland

    The Journal of clinical investigation
    |December 15, 2023
    PubMed
    概括

    在小鼠中降低格林激素水平导致胰腺小岛变大,特别是在老年和肥胖动物中. 这表明格林可能是糖尿病预防和治疗的目标.

    科学领域:

    • 内分泌学 在内分泌学.
    • 代谢研究的研究.
    • 糖尿病的发病原因是糖尿病的病原体.

    背景情况:

    • 关于格林对胰腺小岛大小的影响,存在相互矛盾的研究.
    • 格林是一种激素,在食欲和新陈代谢中起作用.
    • 了解格林在小岛调节中的精确功能对于代谢疾病研究至关重要.

    研究的目的:

    • 严格调查格林减少对胰腺小岛大小的影响.
    • 通过不同遗传背景 (生殖线和条件淘汰小鼠) 检查这些影响.
    • 评估年龄和饮食诱导的肥胖对格林在岛屿大小中的作用的影响.

    主要方法:

    • 使用了生殖线和有条件的格林林淘汰赛小鼠模型.
    • 在不同年龄的小鼠中评估岛屿大小.
    • 纳入饮食诱导的肥胖模型来研究代谢影响.

    主要成果:

    • 生殖线和有条件格林敲除都导致胰腺小岛大小增加.
    • 格林减少对岛屿大小的影响在老年小鼠中更为明显.
    • 饮食诱导的肥胖症加剧了在格林激素被淘汰的小鼠中观察到的岛屿大小的增加.

    结论:

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    • 降低林水平与更大的胰腺小岛大小有关.
    • 年龄和肥胖程度显著改变了格林对岛屿大小的影响.
    • 准林通路可能为糖尿病预防和治疗提供一种新的治疗策略.