Diabetes Care:1型糖尿病的表型异质性的新机制!

2017-10-17 MedSci MedSci原创

1型糖尿病的表型多样性表明了其异质性的发病机理。近期,一项发表在杂志Diabetes Care上的研究评估了2型糖尿病相关转录因子7样2型(TCF7L2)单核苷酸多态性(SNP)与1型糖尿病诊断的免疫和代谢特征之间的关系。此项研究使用了具有新诊断的自身免疫性1型糖尿病的TrialNet参与者可用的TCF7L2 rs4506565和rs7901695 SNP的数据(n = 810;中位年龄13.6岁

1型糖尿病的表型多样性表明了其异质性的发病机理。近期,一项发表在杂志Diabetes Care上的研究评估了2型糖尿病相关转录因子7样2型(TCF7L2)单核苷酸多态性(SNP)与1型糖尿病诊断免疫和代谢特征之间的关系。


此项研究使用了具有新诊断的自身免疫性1型糖尿病的TrialNet参与者可用的TCF7L2 rs4506565和rs7901695 SNP的数据(n = 810;中位年龄13.6岁;范围3.3-58.6)。研究者们模拟了携带TCF7L2变体(即具有1或2个次要等位基因)对胰岛自身抗体数量和口服葡萄糖耐量试验(OGTT)刺激的C肽和葡萄糖测量在糖尿病诊断中的影响。所有分析都针对已知的混杂因素进行了调整。

研究结果显示:在诊断时,rs4506565变体是表达单个自身抗体而不是多重自身抗体的显着独立因素(优势比[OR] 1.66 [95%CI 1.07,2.57],P = 0.024)。相互作用分析表明,这种关联只在≥12岁患者(n = 504;OR 2.12 [1.29,3.47],P = 0.003),而非年龄较小患者中有意义(n = 306,P = 0.73)。rs4506565变体与曲线下更高的C-肽面积(AUC)(P = 0.008)和较低的平均葡萄糖AUC(P = 0.0127)独立相关。此外,在rs7901695 SNP中也发现相似结果。

此项研究表明:在新发1型糖尿病患者中,2型糖尿病联合TCF7L2变异体与OGTT期间单次自身抗体(年龄≥12岁),较高C肽AUC和较低葡萄糖AUC水平相关。因此,TCF7L2变体的携带者在1型糖尿病诊断中具有较轻的免疫学和代谢表型,2型糖尿病样致病机制可部分驱动其发展。

原始出处:
Redondo MJ, Geyer S, et al. TCF7L2 Genetic Variants Contribute to Phenotypic Heterogeneity of Type 1 Diabetes. Diabetes Care. 2017 Oct 12. pii: dc170961. doi: 10.2337/dc17-0961.

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    2017-12-19 hb2008ye
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    2017-10-21 大爰

    学习了谢谢分享!!!

    0

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    2017-10-19 tastas

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