间歇性禁食在2型糖尿病模型中保护β细胞的身份和功能
Sumit Patel1, Zihan Yan1, Maria S Remedi2
1Department of Medicine, Division of Endocrinology, Metabolism and Lipid Research, Washington University School of Medicine, 660 South Euclid Avenue, Saint Louis, MO, United States of America.
Metabolism: clinical and experimental
|February 2, 2024
概括
间歇性禁食 (IF) 通过保护胰腺β细胞功能和身份,改善了小鼠的2型糖尿病 (T2DM). 这种饮食干预减少了高血糖和提高了胰岛素敏感性,为T2DM提供了潜在的治疗益处.
科学领域:
- 内分泌学 在内分泌学.
- 代谢疾病 代谢疾病
- 营养科学 营养科学
背景情况:
- 2型糖尿病 (T2DM) 涉及遗传和环境因素,导致高血糖,胰岛素分泌受损和胰岛素抵抗.
- 慢性高血糖会对胰腺β细胞的功能,质量和身份产生负面影响.
- 间歇性禁食 (IF) 显示了代谢益处,但它对T2DM模型中的胰腺β细胞的特定影响尚未完全理解.
研究的目的:
- 研究间歇性禁食 (IF) 对胰腺β细胞功能和身份的长期影响,在2型糖尿病 (T2DM) 的小鼠模型中.
- 阐明IF可以保护β细胞并改善T2DM中的代谢参数的机制.
主要方法:
- KK和KKA小鼠,多基因T2DM的模型,经过间歇性禁食 (IF) 16周.
- 评估的参数包括血糖,血胰岛素,体重,脂质谱,胰岛素敏感性和关键β细胞转录因子的表达.
- 评估了葡萄糖刺激的胰岛素分泌和肝脏肥胖症,葡萄糖生成和炎症.
主要成果:
- IF显著降低了血糖和血胰岛素水平,减少了体重增加,并在KK和KKA小鼠中改善了胰岛素敏感性.
- IF增强了β细胞身份标记物 (NKX6.1,MAFA,PDX1) 的表达,并降低了脱差的一个标记物 (ALDH1a3).
- IF使葡萄糖刺激的胰岛素分泌正常化,并减少肝硬化和炎症,特别是在KKA小鼠中.
结论:
- 间歇性禁食 (IF) 在T2DM小鼠模型中保留了胰腺β细胞的身份和功能.
- IF赋予代谢效益,包括改善血糖控制和胰岛素敏感性,并减少肝脏并发症.
- IF代表了一种潜在的饮食干预,通过保护β细胞健康来管理T2DM.
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