Cell Metab:FGF21对机体饮食有何影响?

2015-12-25 QQduhq 译 MedSci原创

50年前人们就发现肝在调节食物摄入和偏好等方面发挥了重要的作用。既往研究也表明,FGF21(成纤维细胞生长因子21抗体,肝脏分泌的一种激素)在其中起到了很重要的作用,FG0F21基因序列可以引起人类对不同营养素的偏好不同。如今有两项新的研究针对FGF21激素及其工作原理进行了阐述。 爱荷华大学的Matthew Potthoff博士及哥本哈根大学的Matthew Gillum博士合作,联合探究FGF

50年前人们就发现肝在调节食物摄入和偏好等方面发挥了重要的作用。既往研究也表明,FGF21(成纤维细胞生长因子21抗体,肝脏分泌的一种激素)在其中起到了很重要的作用,FG0F21基因序列可以引起人类对不同营养素的偏好不同。如今有两项新的研究针对FGF21激素及其工作原理进行了阐述。

 
爱荷华大学的Matthew Potthoff博士及哥本哈根大学的Matthew Gillum博士合作,联合探究FGF21的功能。他们对老鼠进行了实验,以探究FGF21控制酒精和糖摄入的能力及调节作用。 

通过他们的实验,他们观察到,机体摄入糖类后,肝脏产生FGF21,然后分泌入血中,对下丘脑负反馈调节以抑制糖类的摄入。与此同时,德克萨斯大学的研究人员Steven Kliewer和David Mangelsdorf对小鼠和猴子也进行了实验,以探究其体内FGF21的调节。

研究人员发现。FGF21影响动物对糖类食物和酒精的摄入。若给予猴子一定剂量的FGF21,猴子便对糖类食物失去兴趣,同样,也会减少酒精是摄入。其他研究表明,FGF21并不影响机体对脂肪酸的反应或味觉及口感。 

人类遗传学研究表明,FGF21可以作用于中枢神经系统,影响机体行为。研究人员对FGF21存在的原因仍不清楚。或者是因为糖发酵成乙醇,或许是为了保护肝脏免受过量酒精的损害。 

但这两项研究表明,如果FGF21可以预防糖类的过度摄入,则仍需进行更进一步的研究,或许有助于治疗2型糖尿病和肥胖。 

Kliewer博士认为,尽管FGF21可抑制酒精和糖类的摄入,但是这与情绪密切相关,因此,研究人员需要探究FGF21是否与抑郁有关。

Potthoff认为,除了探究FGF21如何影响碳水化合物的摄入,还有其他激素调节食欲,因此研究人员还需调节这些激素之间的相互作用。

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    2016-05-26 维他命
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    2015-12-31 一闲
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    2016-11-23 guojianrong
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    2015-12-30 忠诚向上

    好好学习

    0

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    2015-12-26 zhty5339

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