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Analysis of HLA-G Polymorphisms in Couples with Implantation Failure.
MedLine Citation:
PMID:  23009094     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
PROBLEM: HLA-G expression is related as an immune modulator of fetal-maternal tolerance, and its levels was correlated with pregnancy outcome. In a case-control study, we investigate the association between the genetic variability of the HLA-G gene and serum levels of soluble HLA-G in cases of embryo implantation failure. METHOD OF STUDY: Forty couples with at least two unsuccessful fresh embryo transfers (implantation failure; IF) and 83 fertile couples with at least two successful pregnancies was genotyped by sequencing-based typing. HLA-G alleles were defined by nucleotide sequence variations at exon 2, 3, and 4, and the quantification of soluble HLA-G (sHLA-G) was performed by ELISA. RESULTS: There was a significant difference between the HLA-G allelic distributions between IF couples and the control couples. The HLA-G*01:03:01 allele was increased in the IF couples. There were no significant differences in the serum levels of sHLA-G in the IF and control groups. CONCLUSION: The results suggest that the distribution of HLA-G products may play a significant role in the modulation of maternal-fetal immune response.
Authors:
Fabiola da Silva Nardi; Renata Slowik; Pryscilla Fanini Wowk; José Samuel da Silva; Geórgia Fernanda Gelmini; Tatiana Ferreira Michelon; Jorge Neumann; Maria da Graça Bicalho
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-25
Journal Detail:
Title:  American journal of reproductive immunology (New York, N.Y. : 1989)     Volume:  -     ISSN:  1600-0897     ISO Abbreviation:  Am. J. Reprod. Immunol.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8912860     Medline TA:  Am J Reprod Immunol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 John Wiley & Sons A/S.
Affiliation:
Laboratory of Immunogenetics and Histocompatibility, Genetics Department, Universidade Federal do Paraná, Curitiba, Brazil.
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