HLA-G polymorphisms and soluble HLA-G protein levels in women with recurrent pregnancy loss from Basrah province in Iraq

被引:46
作者
Jassem, Raghed M. [2 ]
Shani, Wafaa Sadoon [3 ]
Loisel, Dagan A. [1 ]
Sharief, Maysoon [4 ]
Billstrand, Christine [1 ]
Ober, Carole [1 ,5 ]
机构
[1] Univ Chicago, Dept Human Genet, Chicago, IL 60637 USA
[2] Univ Basrah, Dept Basic Sci, Coll Dent, Basrah, Iraq
[3] Univ Basrah, Dept Biol, Coll Sci, Basrah, Iraq
[4] Univ Basrah, Dept Gynecol & Obstet, Coll Med, Basrah, Iraq
[5] Univ Chicago, Dept Obstet & Gynecol, Chicago, IL 60637 USA
关键词
IN-VITRO FERTILIZATION; INTRAUTERINE GROWTH-RETARDATION; CHINESE HAN POPULATION; G PROMOTER REGION; G MESSENGER-RNA; G GENE; LINKAGE DISEQUILIBRIUM; SPONTANEOUS-ABORTIONS; G GENOTYPE; 3-UNTRANSLATED REGION;
D O I
10.1016/j.humimm.2012.05.009
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
HLA-G is a nonclassical, class I major histocompatibility complex (MHC) gene that exhibits immunomodulatory properties and likely plays a role in the maintenance of successful pregnancy. In this study, we investigated the role of HLA-G polymorphisms on risk for recurrent pregnancy loss (RPL) and on circulating levels of soluble (s)HLA-G in Iraqi women. DNA and plasma were obtained from blood samples collected at 9-12 weeks gestation from 50 women with RPL and 50 healthy pregnant women in Basrah province, Iraq. As measured by ELISA, median sHLA-G levels were significantly lower in the RPL cases compared to healthy controls (21.4 vs. 38.8 U/ml, respectively; P = 0.025), and decreased with increasing maternal age (P = 0.0051). However, HIA-G allele and haplotype frequencies did not differ significantly between cases and controls (P values >= 0.12 for all tests). In contrast, homozygosity for the C allele (CC) at a tri-allelic promoter polymorphism, -725C/G/T, was associated with lower concentrations of sHLA-G compared to the CG or CT genotypes (median levels 21.1 vs. 40.1 vs. 42.6 U/ml, respectively; P = 0.0089). These results demonstrate that HIA-G genotype influences circulating sHLA-G levels during pregnancy but is not significantly associated with risk of RPL. (C) 2012 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved.
引用
收藏
页码:811 / 817
页数:7
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