暴露于寒冷会通过血衍生的细胞外囊泡缓解T2DM
Fu-Xing-Zi Li1, Feng Xu1, Chang-Chun Li1
1Department of Metabolism and Endocrinology, National Clinical Research Center for Metabolic Disease, The Second Xiangya Hospital, Central South University, Changsha, Hunan, 410011, People's Republic of China.
International journal of nanomedicine
|October 7, 2024
概括
暴露于寒冷,特别是通过血衍生的细胞外囊泡 (EVs) 的寒冷温度 (CT),显著降低了血糖,并改善了2型糖尿病小鼠的胰岛素敏感性. 这表明糖尿病管理的潜在治疗途径.
科学领域:
- 代谢性疾病研究研究.
- 环境生理学环境生理学
- 细胞和分子生物学是细胞和分子生物学.
背景情况:
- 暴露于寒冷,包括冬季游泳和冷水浸泡,与健康益处有关.
- 新出现的证据表明,暴露于寒冷可能会影响新陈代谢过程,并可能缓解2型糖尿病 (T2DM).
- 系统冷温 (CT) 暴露可能会影响血液成分和系统生理学.
研究的目的:
- 为了研究慢性感冒暴露对T2DM小鼠的影响.
- 探索寒冷暴露如何减轻T2DM的发病率和进展.
- 阐明寒冷暴露对葡萄糖代谢和胰岛素敏感性影响的潜在机制.
主要方法:
- T2DM小鼠被暴露在低温 (CT, 4-8°C) 或室温 (RT, 22-25°C) 中.
- 血液和器官样本经历了生物化学测试,ELISA,HE染色和免疫光.
- 葡萄糖吸收,信号通路 (AKT,IRS1) 和小岛细胞亡被评估使用流动细胞计和西欧斑点.
主要成果:
- CT和CT小鼠血衍生的细胞外囊泡 (CT-EVs) 降低了T2DM小鼠的血糖和改善了胰岛素敏感性.
- CT-EV增强了葡萄糖代谢,胰岛素分泌和糖原积累,同时保护小岛免受链毒素诱导的破坏.
- CT-EVs增加了脂肪细胞和肝细胞中的p-IRS1和p-AKT表达,显示出一种亲胰岛素敏感性效应.
结论:
- 暴露于寒冷,主要是通过血衍生的EVs,表现出对T2DM有益的抗糖尿病作用.
- 这种机制为在寒冷气候下降的糖尿病患病率提供了潜在的解释.
- 冷刺激等离子电动器代表了T2DM的一个有前途的治疗策略.
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