利拉格卢提德在经过卵巢切除的Wistar大鼠中阻止了身体和脂肪质量的增加
Camila Lüdke Rossetti1, Iris Soares Andrade2, Luiz Fernando Fonte Boa2
1Instituto de Biofísica Carlos Chagas Filho, Universidade Federal Do Rio de Janeiro, Rio de Janeiro, Brazil; Department of Internal Medicine, Division of Endocrinology, Diabetes and Metabolism, Miller School of Medicine, University of Miami, Miami, USA.
Molecular and cellular endocrinology
|September 21, 2024
概括
葡萄糖类-1 (GLP-1) 激动剂利拉格胺在卵巢切除的老鼠中部分逆转了由雌激素缺乏引起的代谢障碍,但增加了脂肪组织的炎症.
科学领域:
- 代谢内分泌学代谢内分泌学
- 药理学 药理学是指药理学的学科.
- 肥胖问题研究研究
背景情况:
- 由卵巢切除术 (OVX) 引起的雌激素缺乏会导致代谢障碍,包括体重增加,脂肪增加和葡萄糖耐受性受损.
- 葡萄糖类-1 (GLP-1) 受体激动剂以其降糖和抑制食欲的作用而闻名,具有潜在的外周代谢作用.
- 共同的代谢途径表明GLP-1激动剂可能会抵消与雌激素缺乏相关的代谢变化.
研究的目的:
- 为了调查GLP-1激动剂利拉格卢提德是否可以减轻雌激素缺乏的不良代谢影响,在老鼠模型中.
- 为了比较liraglutide和17β-Estradiol佐酸对被卵巢切除的老鼠的代谢参数的影响.
主要方法:
- 卵巢切除术 (OVX) 的老鼠被用利拉格卢提德或17β-雌激素酸盐治疗了21天.
- 在血和 inguinal 白脂肪组织 (iWAT) 中评估的体重,脂肪量,食物摄入量,食物效率和 dipeptidyl peptidase-IV (DPP-IV) 活性.
- 评估了白色脂肪组织中的促炎标志物和炎症细胞透.
主要成果:
- 卵巢切除增加了DPP-IV活性;雌激素替代使其正常化,而利拉古类药物只阻止了iWAT的增加.
- 利拉格卢提德和雌激醇治疗都有效地防止了体重和脂肪质量增加,与减少食物摄入量和提高食物效率有关.
- 利拉格卢提德治疗导致白色脂肪组织中炎症性细胞和炎症性细胞增加.
结论:
- 利拉格卢提德部分模仿雌激素的有益代谢作用,减轻雌激素缺乏的老鼠的体重和脂肪增加.
- 与liraglutide相比,雌激素替代药物在系统性地使DPP-IV活性正常化方面更有效.
- 利拉格卢提德在脂肪组织中的促炎作用需要进一步研究,以确保在更年期情况下的安全应用.
相关概念视频
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 the...
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 the...
Dipeptidyl Peptidase 4 Inhibitors
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 significant...


