肥胖症中的阿迪波涅克抗性:阿迪波涅克莱普/胰岛素相互作用
Atilla Engin1,2
1Faculty of Medicine, Department of General Surgery, Gazi University, Besevler, Ankara, Turkey. dr.aengin@gmail.com.
Advances in experimental medicine and biology
|September 17, 2024
概括
与肥胖和胰岛素抵抗相关的阿迪波涅丁 (APN) 耐药性涉及受体信号受损. 针对APN通路的策略可以改善肥胖个体的代谢健康和胰岛素敏感性.
科学领域:
- 代谢内分泌学代谢内分泌学
- 肥胖问题研究研究
- 炎症生物学 炎症生物学
背景情况:
- 肥胖与慢性炎症和胰岛素耐药性有关,其中氨酸 (APN) 起着关键作用.
- 过度化的脂肪细胞和巨细胞两极分化影响APN受体 (AdipoR1/R2) 表达和炎症反应.
- 降低APN度和AdipoR1/R2mRNA表达导致APN抵抗,加剧胰岛素抵抗.
研究的目的:
- 研究肥胖症中阿迪波涅丁 (APN) 耐药性的机制及其与胰岛素耐药性的关系.
- 探索阿迪波R1/R2表达和细胞内信号传导媒介,如APPL1/APPL2在APN不响应中的作用.
- 评估潜在的治疗策略,以改善肥胖个体的代谢健康.
主要方法:
- 在肥胖患者中分析了阿迪波涅丁 (APN) 水平,APN受体 (AdipoR1/R2) mRNA表达和瘦素与APN的比率.
- 使用HOMA-IR和QUICKI对胰岛素敏感性的评估.
- 研究涉及APPL1/APPL2调解APN效应的细胞内信号通路.
- 在体重维持模型中对下丘脑rAAV-丁基因治疗的评估.
主要成果:
- 抗阿迪波涅丁 (APN) 耐药性在肥胖中很普遍,与胰岛素耐药性相关,其特点是减少阿迪波R1/R2表达和信号受损.
- 在胰岛素抵抗性肥胖个体中,丁与APN的比率显著升高.
- APPL2竞争性地抑制了APPL1,损害了APN信号传递和胰岛素敏感性,而APPL1则调解了依赖APN的胰岛素敏感性.
- 脑下叶黄素基因疗法有效降低了血清APN水平,并促进了体重维持.
结论:
- 耐素 (APN) 耐药性是与肥胖相关的代谢功能障碍的一个关键因素,与胰岛素耐药性形成了一个恶性循环.
- 细胞内信号受损,特别是涉及APPL1/APPL2,导致APN不响应,尽管APN水平正常或升高.
- 恢复AdipoR表达和优化细胞内信号通路有望提高APN疗效和改善胰岛素敏感性.
- 基于莱普的基因疗法为管理肥胖和相关代谢障碍提供了潜在的策略.
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