中高海拔地区2型糖尿病患者抵抗素基因多态性与代谢相关脂肪性肝病相关性的研究

Relationship between polymorphism of resistin gene and metabolic associated fatty liver disease in type 2 diabetes mellitus patients in middle and high altitude areas

目的探讨中高海拔地区T2DM患者抵抗素(RETN)基因多态性与代谢相关脂肪性肝病(MAFLD)的相关性。方法选取青海地区T2DM患者400例,根据肝脏超声检查分为单纯T2DM组(n=200)及T2DM合并MAFLD组(T2DM+MAFLD,n=200),同期选取我院体检健康者180名为正常对照(NC)组。采用ELISA法检测受试者RETN,PCR测序法检测RETN基因-420C/G及+299G/A位点多态性。结果T2DM+MAFLD组G/G基因型频率和G等位基因频率高于NC、T2DM组(P<0.05),C/C基因型频率和C等位基因频率低于NC、T2DM组(P<0.05),C/G、G/G基因型及G等位基因可增加T2DM合并发生MAFLD风险的1.571、2.126和1.537倍。Logistic回归分析显示,-420C/G位点G/G基因型是T2DM合并MAFLD的危险因素。T2DM+MAFLD组A等位基因频率高于NC、T2DM组(P<0.05),G等位基因频率低于NC、T2DM组(P<0.05),等位基因A较G增加T2DM合并MAFLD风险的1.432倍。结论RETN基因-420C/G位点G/G基因型增加中高海拔地区T2DM合并MAFLD风险。

Objective To investigate the relationship between polymorphism of resistin(RETN)gene and metabolic associated fatty liver disease(MAFLD)in type 2 diabetes mellitus(T2DM)patients in middle and high altitude areas.Methods A total of 400 patients with T2DM in Qinghai area were recruited and divided into simple T2DM group(T2DM,n=200)and T2DM combined with MAFLD group(T2DM+MAFLD,n=200)according to liver ultrasonography.Healthy individuals confirmed by physical examination were selected as the normal control group(NC,n=180).Plasma resistin levels were measured by ELISA.The polymorphism of RETN-420C/G and+299G/A genes were detected by PCR sequencing.Results By comparing the polymorphism of RETN-420C/G gene in each group,it was found that the frequencies of G/G genotype and G allele frequency in T2DM+MAFLD group were higher than those in NC group and T2DM group(P<0.05),while the frequencies of C/C genotype and C allele frequency were lower than those in NC group and T2DM group(P<0.05).The risk of MAFLD increased by 1.571,2.126 and 1.537times respectively in T2DM patients with C/G,G/G genotype and G allele.Logistic regression analysis showed that G/G genotype was a risk factor for MAFLD in T2DM patients.By comparing the polymorphism of RETN+299G/A gene in each group,it was found that A allele frequency in T2DM+MAFLD group was higher than that in NC group and T2DM group,while G allele frequency was lower than that in NC group and T2DM group(P<0.05).The allele A increased the risk of MAFLD in T2DM patients by 1.432 times compared to allele G.Conclusion RETN gene-420C/G locus G/G genotype increases the risk of T2DM combined with MAFLD in middle and high altitudeareas.