Rolf Luft Center for Diabetes Research, Department of Molecular Medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Solna, Stockholm, Sweden.
BMC Med Genet. 2010 Jul 28;11:116. doi: 10.1186/1471-2350-11-116.
BACKGROUND: MCF2L2, ADIPOQ and SOX2 genes are located in chromosome 3q26-27, which is linked to diabetic nephropathy (DN). ADIPOQ and SOX2 genetic polymorphisms are found to be associated with DN. In the present study, we first investigated the association between MCF2L2 and DN, and then evaluated effects of these three genes on the development of DN. METHODS: A total of 1177 type 1 diabetes patients with and without DN from the GoKinD study were genotyped with TaqMan allelic discrimination. All subjects were of European descent. RESULTS: Leu359Ile T/G variant in the MCF2L2 gene was found to be associated with DN in female subjects (P = 0.017, OR = 0.701, 95%CI 0.524-0.938) but not in males. The GG genotype carriers among female patients with DN had tendency decreased creatinine and cystatin levels compared to the carriers with either TT or TG genotypes. This polymorphism MCF2L2-rs7639705 together with SNPs of ADIPOQ-rs266729 and SOX2-rs11915160 had combined effects on decreased risk of DN in females (P = 0.001). CONCLUSION: The present study provides evidence that MCF2L2, ADIPOQ and SOX2 genetic polymorphisms have effects on the resistance of DN in female T1D patients, and suggests that the linkage with DN in chromosome 3q may be explained by the cumulated genetic effects.
背景:MCF2L2、ADIPOQ 和 SOX2 基因位于染色体 3q26-27 上,该区域与糖尿病肾病(DN)相关。ADIPOQ 和 SOX2 基因的遗传多态性与 DN 相关。本研究首次探讨了 MCF2L2 与 DN 的关系,并评估了这三个基因对 DN 发生发展的影响。
方法:采用 TaqMan 等位基因鉴别法对来自 GoKinD 研究的 1177 例有或无 DN 的 1 型糖尿病患者进行 MCF2L2 基因分型。所有受试者均为欧洲血统。
结果:MCF2L2 基因的 Leu359Ile T/G 变体与女性 DN 相关(P = 0.017,OR = 0.701,95%CI 0.524-0.938),但与男性无关。DN 女性患者中 GG 基因型携带者的肌酐和胱抑素水平较 TT 或 TG 基因型携带者有下降趋势。MCF2L2-rs7639705 多态性与 ADIPOQ-rs266729 和 SOX2-rs11915160 单核苷酸多态性的联合作用降低了女性发生 DN 的风险(P = 0.001)。
结论:本研究提供了证据表明 MCF2L2、ADIPOQ 和 SOX2 基因多态性对女性 1 型糖尿病患者 DN 的抗性有影响,并提示 3q 染色体上与 DN 的连锁可能是由累积的遗传效应所解释。
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