Abstract:
CONTEXT:CTLA-4 is engaged on effector cells that may alter signal transduction and subsequently cytokine production. The transmission of longer repeats of (AT)(n) alleles of CTLA-4 is also associated with women undergoing recurrent miscarriage. The TNF-α known as an embryo-toxic cytokine is reported to be greater in placentas of abortion prone pregnancies. OBJECTIVES:The present study investigated the role of CTLA-4+49 A/G, CTLA-4 (AT)(n) 3'UTR, TNF-α-308G/A and TNF-α-238G/A polymorphisms as a susceptibility marker for recurrent miscarriage (RM). PARTICIPANTS AND METHODS:We genotyped CTLA4+49 A/G, TNF-α-308 and TNF-α-238 gene polymorphisms in 300 patients with RM and 500 age and ethnically matched negative controls using PCR-RFLP method. While gene sequencing method was adopted for studying the CTLA-4 (AT)(n) 3'UTR polymorphism. RESULTS:The mutant homozygous genotype GG of CTLA4+49A/G, AA genotype and A allele of TNF-α-308, G allele of TNF-α-238 were observed to be predisposing among RM cases along with the 104 bp, 106 bp, 110 bp and 116 bp alleles of CTLA-4 (AT)(n) microsatellite repeat. GA and AG haplotypes of TNF-α were low risk associated haplotypes among recurrent miscarriage women. CONCLUSIONS:Roles of CTLA-4 A49G, CTLA-4 (AT)(n) 3'UTR, TNF-α-308 and TNF-α-238 polymorphisms in RM cases from North India is reflected through this study.
journal_name
Cytokinejournal_title
Cytokineauthors
Gupta R,Prakash S,Parveen F,Agrawal Sdoi
10.1016/j.cyto.2012.05.018subject
Has Abstractpub_date
2012-11-01 00:00:00pages
456-62issue
2eissn
1043-4666issn
1096-0023pii
S1043-4666(12)00214-1journal_volume
60pub_type
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