JCEM:氨基酸和脂肪酸水平对健康人群肝脏磷代谢产物含量的影响

2017-11-15 MedSci MedSci原创

众所周知肝脏能量代谢与2型糖尿病患者的胰岛素抵抗与肝脏脂肪含量呈负相关,但是其在代谢健康人群中的作用还不清楚。

众所周知肝脏能量代谢与2型糖尿病患者的胰岛素抵抗和肝脏脂肪含量呈负相关,但是其在代谢健康人群中的作用还不清楚。

近日在JCEM上发表的一篇文章假设肝细胞内γ-三磷酸腺苷(γATP)和无机膦酸(PI)的浓度在非糖尿病非肥胖受试者中与胰岛素敏感有类似的关系。该研究共纳入76例受试者,进行了4点75gOGTT以及体内31P/1H磁共振波谱。其中62例进行了针对性的血浆代谢谱分析。对相关变量γATP和pi进行皮尔森相关分析。

研究结果显示,在调整了年龄、性别和BMI之后,肝γATP和PI与2hOGTT血糖相关(r=0.25和r=0.27,两者p<0.05),而且PI进一步与非酯化脂肪酸有关(r=0.28,p<0.05)。但是,无论是γATP还是PI都与胰岛素敏感性的一些测量不显著相关。肝γATP与循环亮氨酸有关(r=0.42,P<0.001)、PI与C16:1脂肪酸棕榈酸和C16:1w5(分别r=0.28和0.3,p<0.01)及δ- 9-去饱和酶指数(r=0.33,p<0.05)有关。在多因素校正后,只有γATP和亮氨酸的相关性显着。亮氨酸和棕榈酸,连同年龄、性别和BMI分别占γATP和PI变化的26%和15%。

由上述研究可以发现特定的循环氨基酸和非酯化脂肪酸而不是胰岛素的敏感性在一定程度上影响肝脏的磷代谢,提示非糖尿病患者中肝脏能量代谢和循环代谢的相互作用。

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    2018-10-25 achengzhao
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    2018-10-22 smallant2015
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    2017-11-15 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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