JCEM:进食氨基酸同样能产生肠促胰素效应

2015-01-19 angletears 译 MedSci原创

肠促胰素效应,是指同等量的葡萄糖,口服比静脉注射更能促进移动啊素分泌,这与肠道分泌的两种肠促胰岛素,GIP和GLP-1有关。据研究,口服葡萄糖后,70%-80%的胰岛素分泌与肠促胰素效应有关。但是,这种肠促胰素效应不仅仅只存在于碳水化合物,很可能与其他宏观营养素有关。之前,来自瑞典的Ola Lindgren和他的团队,已经证明,这种肠促胰素效应,在进食脂质时同样存在。最近,他们的研究进一步证明,进

肠促胰素效应,是指同等量的葡萄糖,口服比静脉注射更能促进移动啊素分泌,这与肠道分泌的两种肠促胰岛素,GIP和GLP-1有关。据研究,口服葡萄糖后,70%-80%的胰岛素分泌与肠促胰素效应有关。但是,这种肠促胰素效应不仅仅只存在于碳水化合物,很可能与其他宏观营养素有关。之前,来自瑞典的Ola Lindgren和他的团队,已经证明,这种肠促胰素效应,在进食脂质时同样存在。最近,他们的研究进一步证明,进食氨基酸同样产生肠促胰素效应。


研究者选取12位男性非糖尿病志愿者,平均年龄在22.5±1.4岁,平均BMI22.4±1.4 kg/m2,,分别给予相同浓度的氨基酸口服或静脉注射。

试验中,测量餐后120min的胰岛素、C肽、胰高血糖素、GLP-1、GIP的曲线下面积(AUC),及胰岛素分泌率和胰岛素清除率



结果,胰岛素、C肽、胰高血糖素水平在口服和静脉注射氨基酸时,均升高了。但是,口服氨基酸时,胰岛素的分泌率比静脉注射的高25%。然而,胰高血糖素的反应在口服和静脉注射两种情况下,并无差别。

他们得出结论,给予同等水平的氨基酸,口服比静脉注射,可促进更多的胰岛素分泌,这与餐后GIP的水平迅速升高有关,这提示,口服氨基酸后引发的肠促胰岛素效应,很可能是由GIP介导的。

原始出处:

Lindgren O1, Pacini G, Tura A, Holst JJ, Deacon CF, Ahrén B.Incretin Effect after Oral Amino Acid Ingestion in Humans.J Clin Endocrinol Metab. 2014 Dec 9:jc20143865. [Epub ahead of print]


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    2015-09-12 achengzhao
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    2015-09-15 smallant2015
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    2015-01-21 gj0737

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