Diabetologia:为什么在小鼠中测量胰高血糖素样肽-1是如此困难?

2017-10-27 MedSci MedSci原创

在人类中,胰高血糖素样肽-1(GLP-1)被二肽基肽酶-4快速降解成相对稳定的代谢物GLP-1(9-36)NH 2,从而可可对GLP-1分泌情况进行测定。然而,关于GLP-1代谢物在小鼠中的动力学知之甚少。近日,国际杂志 《Diabetologia》上在线发表一项关于在小鼠中测量胰高血糖素样肽-1的研究。研究人员假设GLP-1代谢物在该物种中通过中性肽链内切酶(NEP [s])快速降解。

在人类中,胰高血糖素样肽-1(GLP-1)被二肽基肽酶-4快速降解成相对稳定的代谢物GLP-1(9-36)NH 2,从而可可对GLP-1分泌情况进行测定。然而,关于GLP-1代谢物在小鼠中的动力学知之甚少。近日,国际杂志 《Diabetologia》上在线发表一项关于在小鼠中测量胰高血糖素样肽-1的研究。研究人员假设GLP-1代谢物在该物种中通过中性肽链内切酶(NEP [s])快速降解。 研究人员让256只小鼠口服葡萄糖,混合膳食或水,并在刺激前,刺激后的2,6,10,20,30,60或90分钟分别取血样。为了研究GLP-1代谢物的代谢,让160只小鼠口服iv GLP-1(9-36)NH 2(800fmol)或盐水(154mmol / l NaCl),其中一些先前注射选择性NEP 24.11±抑制剂(坎多西林,5mg / kg)或盐水。在GLP-1 /盐水注射之前和之后1,2,4和12分钟收集血液。使用定制的单位点C-末端ELISA,两个不同的双位点ELISA和MS分析血浆GLP-1水平。 研究发现,口服葡萄糖给药后的GLP-1分泌曲线与夹心ELISA相比,通过C末端ELISA测定有着

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    2018-04-02 仁心济世
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    2017-10-29 hbwxf
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孕妇孕期糖尿病会增加其及后代远期发生2型糖尿病(T2DM)和其他代谢综合征发病风险,而T2DM发病与肠促胰岛素、胰高血糖素样肽-1(GLP-1)、葡萄糖依赖性促胰岛素多肽(GIP)、高血糖素症等有关。