相关实验视频
Updated: Jul 2, 2025

08:18
A Model of Chronic Nutrient Infusion in the Rat
Published on: August 14, 2013
12.7K
胆酸的食补充剂可降低胰岛素分泌,以应对大肠内葡萄糖在老鼠的管理
Fumika Yokoyama1, Reika Yoshitsugu1, Hiromichi Yamazaki1
1Research Faculty of Agriculture, Hokkaido University.
Journal of nutritional science and vitaminology
|February 28, 2024
概括
升高的胆酸会损害大鼠的胰岛素分泌,这表明胆酸代谢和2型糖尿病之间存在联系. 这项研究强调了胆汁酸的增加如何可能降低胰腺释放胰岛素的能力.
科学领域:
- 内分泌学 在内分泌学.
- 代谢综合征是代谢综合征的一种.
- 胃肠病学 胃肠病学
背景情况:
- 2型糖尿病的特点是胰岛素抵抗.
- 血中12-基胆酸 (BAs) 的含量与人类的胰岛素抵抗有关.
研究的目的:
- 为了研究肠肝12-基乙醇和葡萄糖耐受性/胰岛素分泌量增加之间的关联.
- 探索饮食中胆酸 (CA) 补充对大鼠胰岛素反应的影响.
主要方法:
- 给老鼠食的是补充胆酸 (0.5g/kg) 的饮食.
- 内葡萄糖的使用用于评估血胰岛素反应.
- 进行了口服葡萄糖耐受性测试.
- 分析了胰腺基因表达 (Ins1,Ins2) 和胰岛素蛋白质含量.
主要成果:
- 与对照组相比,与胆酸养的老鼠在腹腔内葡萄糖施用后显著减少了血胰岛素的增加.
- 两组之间没有观察到口服葡萄糖耐受性的显著差异.
- 胰腺Ins1和Ins2基因表达增加,但胆酸养大鼠的胰岛素蛋白质含量下降.
- 在胰腺中没有观察到宫外脂肪积累或组织学损伤.
结论:
- 肠肝12-基胆酸调节胰岛素分泌以应对腹腔内葡萄糖.
- 胰腺胰岛素储量减少可能是食高胆酸饮食的老鼠观察到的胰岛素分泌量减少的原因.
相关概念视频
Glucagon-like Receptor Agonists
321
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...
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...
321
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors
175
α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are...
Acarbose and miglitol are...
175
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion
1.3K
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...
Insulin and C-peptide are...
1.3K
Dipeptidyl Peptidase 4 Inhibitors
186
Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a...
186
Chronic Pancreatitis II: Collaborative Care
88
The management of chronic pancreatitis is multifaceted, involving a comprehensive approach that includes thorough assessment, diagnostic testing, and a variety of management strategies.
Assessment:
Assessment:
88
Hormones Regulating Blood Glucose
3.3K
Insulin is released by beta cells of the pancreas when blood glucose levels are high. It facilitates glucose absorption and utilization in insulin-dependent cells with insulin receptors on their plasma membranes. Insulin promotes glucose uptake by increasing the number of glucose transport proteins in the cell membrane, allowing glucose to enter the cell. As a result, glucose utilization and ATP production are enhanced.
In addition to accelerating glucose uptake and utilization, insulin has...
In addition to accelerating glucose uptake and utilization, insulin has...
3.3K

