Journal
HUMAN IMMUNOLOGY
Volume 68, Issue 8, Pages 668-674Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.humimm.2007.05.006
Keywords
HLA-G polymorphism; pre-eclampsia; immunomodulation
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The etiology and pathogenesis of pre-eclampsia (PE) involve a combination of maternal-fetal genetic and immunologic factors. The immunologic maladaptation theory of PE predicts that the maternal immune system does not tolerate the semi-allogeneic fetus. Human leukocyte antigen-G (HLA-G) is expressed in some types of immune cells as well as in the fetal-maternal interface by trophoblasts, playing an immunoregulatory role. Here we have evaluated a 14-bp deletion polymorphism in the 3'-untranslated region of exon 8 of HLA-G gene in pregnant PE women and controls. HLA-G genotypes in both control and PE women were in Hardy-Weinberg equilibrium. The healthy pregnant and PE women had similar genotype frequencies (p = 0.789). This was similarly observed when PE women were subgrouped accordingly to severity of disease (p = 0.646). However, the primiparous PE women presented a tendency toward higher frequency of the 14-bp deletion allele (0.442) compared with the primiparous healthy women (0.286), p = 0.09. Our data suggest that the maternal 14-bp deletion of HLA-G is not associated with the risk for PE but that it could affect the development of PE in primiparous women. (c) 2007 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved.
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