Coding region polymorphisms in the indoleamine 2,3-dioxygenase (INDO) gene and recurrent spontaneous abortion

被引:7
作者
Amani, Dawar [1 ]
Ravangard, Fatemeh [1 ]
Niikawa, Norrio [2 ]
Yoshiura, Ko-ichiro [2 ]
Karimzadeh, Mojtaba [3 ]
Dehaghani, Alamtaj Samsami [4 ]
Ghaderi, Abbas [5 ,6 ]
机构
[1] Ardabil Univ Med Sci, Sch Med, Dept Immunol, Ardebil, Iran
[2] Nagasaki Univ, Grad Sch Biomed Sci, Dept Human Genet, Nagasaki 8528523, Japan
[3] Uromieh Univ Med Sci, Sch Med, Dept Immunol, Uromieh, Iran
[4] Shiraz Univ Med Sci, Sch Med, Dept Obstet & Gynecol, Shiraz, Iran
[5] Shiraz Univ Med Sci, Sch Med, Dept Immunol, Shiraz, Iran
[6] Shiraz Univ Med Sci, Sch Med, Shiraz Inst Canc Res, Shiraz, Iran
关键词
INDO; Recurrent spontaneous abortion (RSA); Gene polymorphisms; Iran; REGULATORY T-CELLS; TRYPTOPHAN CATABOLISM; INTERFERON-GAMMA; PREGNANCY; TOLERANCE;
D O I
10.1016/j.jri.2010.07.007
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Indoleamine 2.3-dioxygenase (INDO) catalyzes degradation of the indole ring of indoleamines and locally depletes tryptophan. INDO expression suppresses T cell proliferation and activation. Genetic variation in the INDO gene may contribute to the variable INDO enzyme expression, activity and severity of some diseases. Recurrent spontaneous abortion (RSA) is a common pregnancy complication and the exact causes of RSA are not yet known. We performed an association study between INDO single nucleotide polymorphisms (SNPs) and RSA. To identify INDO SNPs we sequenced DNA samples for ten exons and adjacent intronic regions from 111 RSA patients. Consequently 10 SNPs were detected; four in exons (one in exon 4, two in exon 9 and one in exon 10) and six in intronic regions (one in intron 3, three in intron 6, one in intron 8 and one in intron 9). Three (IVS3+562 del C, IVS8+116T -> G and IVS9+2431 G -> A) of these ten SNPs have been registered at the NCBI SNP database. Statistical analysis of allele, genotype and haplotype frequency distribution in the three most frequent SNPs (IV53+562 del C. IVS6+61 G -> A and IVS9+2431 G -> A) showed no significant differences between the 111 RSA and 105 matched control women. CGA and CGG were the most frequent haplotypes in both the RSA and control groups. We conclude that there is no association between INDO polymorphisms and susceptibility of Iranian women to RSA. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:42 / 47
页数:6
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