遗传学和饮食决定了小岛功能与全身新陈代谢之间的关系
Belinda Yau1,2, Søren Madsen2,3, Marin E Nelson2,3
1School of Medical Science, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, Australia.
概括
遗传背景和饮食显著影响小岛功能和胰岛素分泌. 在C57BL/6J小鼠菌株中,葡萄糖反应最低,而KETO饮食在大多数菌株中降低了胰岛素分泌.
科学领域:
- 代谢研究的研究.
- 遗传学 是一个遗传学.
- 内分泌学 在内分泌学.
背景情况:
- 基因与环境的相互作用对于小岛的功能至关重要,但人们对其了解甚少.
- 基因背景和饮食对胰岛素分泌的调节需要进一步研究.
研究的目的:
- 研究遗传背景和饮食如何相互作用以影响胰腺小岛功能和胰岛素分泌.
- 为了将ex vivo岛屿功能与体内代谢表型相关联.
主要方法:
- 评估了 ex vivo 葡萄糖刺激胰岛素分泌和胰岛素含量,来自13个菌株的213只小鼠.
- 给小鼠吃的是标准,西方饮食 (WD) 或高脂肪,无碳水化合物 (KETO) 饮食.
- 与体内代谢表型化数据相关的岛屿功能.
主要成果:
- 在老鼠菌株和饮食中观察到岛屿功能和胰岛素表型的显著变化.
- C57BL/6J小鼠表现出对葡萄糖反应最少的小岛.
- 在基底和葡萄糖刺激的胰岛素分泌之间发现了正相关性,但不是胰岛素含量.
- 在几乎所有菌株中,KETO饮食降低了胰岛素分泌,同时增加了脂肪和葡萄糖不耐受性.
- 葡萄糖耐受性影响了ex vivo胰岛素分泌和血胰岛素水平之间的关系.
结论:
- 遗传背景是决定小岛功能和对饮食干预措施的反应的关键因素.
- 凯托饮食对β细胞健康和整体葡萄糖代谢产生负面影响,警告不要用于胰腺小岛健康.
- 饮食干预应考虑与遗传背景的相互作用,以有效的代谢管理.
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