夫妇共享人类白细胞抗原DRB等位基因与妊娠期糖尿病的相关性研究

Study on Relationship between the sharing of HLA Gene Couples with Gestational Diabetes Mellitus

目的 将人类白细胞抗原 (hum an leukocyte antigen,HL A ) 类基因作为妊娠期糖尿病 (gestational diabetes m ellitus,GDM)的候选基因之一 ,探讨 GDM患者夫妇 HL A- DRB等位基因共享性与 GDM发病机制的关系。 方法 GDM孕妇及其配偶 30对为研究对象 ,随机选择与研究对象同期入院的同年龄组正常健康孕妇及其配偶 40对作为对照组 ,所有产妇均为单胎初产。采集肘静脉血 5 m l,酚 /氯仿抽提法提取基因组 DNA ,PCR- SSP法进行 HL A- DRB基因分型。 结果 在GDM组中 ,共享 1对及 1对以上 HL A - DRB1等位基因的夫妇占总数的 33.33%,高于正常妊娠组的12 .5 0 %,差异有显著性 [P<0 .0 5 ,相对危险度 (RR) =2 .30 ]。剔除两组相同的共享等位基因的校正分析也显示 GDM组夫妇共享 HL A - DRB1等位基因明显高于正常妊娠组 (16 .6 7%与 0 ,P<0 .0 5 ,RR=1.2 0 ) ,且 GDM组夫妇共享的等位基因 SSCP带型一致 ,未见亚型。GDM组与正常妊娠组相比 ,夫妇对 HL A- DRB3、B4、B5等位基因的共享性无显著差异 (P >0 .0 5 )。 结论 夫妇共享 HL A-DRB1基因时 ,发生 GDM的风险增大 ,提示胎儿 -胎盘单位在 GDM发病中具有一定作用。

Objective To assess the relationship between the HLA gene sharing of couples and gestational diabetes mellitus (GDM). Methods Thirty GDM women and their husbands served as study group, 40 normal pregnant women and their husbands were selected as control group. All pregnant women were primipara with single fetus. 5 ml cubital venous blood were taken. Genomic DNA was extracted using phenol chloroform method. HLA-DRB alleles type were determined with PCR-SSP. Results The sharing of HLA-DRB1 between couples in GDM group were 33.33%, significantly higher than that of normal pregnancy(12.50%)(P<0.05,RR=2.30), there were still statistical difference between two groups in the sharing of HLA-DRB1 between couples in spite of deleting the same alleles in the two groups. No significant differences were found between GDM and normal pregnancy in sharing of HLA-DRB3,B4,B5 between couples (P>0.05). Conclusions The sharing of HLA-DRB1 between couples may inerease the risk of GDM, It suggested that placenta- and-fetus unit may play roles in GDM.