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Journal of Zhejiang University SCIENCE B 2008 Vol.9 No.2 P.93~99

http://doi.org/10.1631/jzus.B0710599


Polymorphisms in genes involved in folate metabolism as maternal risk factors for Down syndrome in China


Author(s):  Shao-shuai WANG, Fu-yuan QIAO, Ling FENG, Juan-juan LV

Affiliation(s):  Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China

Corresponding email(s):   wangshaoshuaitj@yahoo.com.cn

Key Words:  Tetrahydrofllate dehydrogenase, Ligases, Down syndrome, Folate


Shao-shuai WANG, Fu-yuan QIAO, Ling FENG, Juan-juan LV. Polymorphisms in genes involved in folate metabolism as maternal risk factors for Down syndrome in China[J]. Journal of Zhejiang University Science B, 2008, 9(2): 93~99.

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author="Shao-shuai WANG, Fu-yuan QIAO, Ling FENG, Juan-juan LV",
journal="Journal of Zhejiang University Science B",
volume="9",
number="2",
pages="93~99",
year="2008",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.B0710599"
}

%0 Journal Article
%T Polymorphisms in genes involved in folate metabolism as maternal risk factors for Down syndrome in China
%A Shao-shuai WANG
%A Fu-yuan QIAO
%A Ling FENG
%A Juan-juan LV
%J Journal of Zhejiang University SCIENCE B
%V 9
%N 2
%P 93~99
%@ 1673-1581
%D 2008
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B0710599

TY - JOUR
T1 - Polymorphisms in genes involved in folate metabolism as maternal risk factors for Down syndrome in China
A1 - Shao-shuai WANG
A1 - Fu-yuan QIAO
A1 - Ling FENG
A1 - Juan-juan LV
J0 - Journal of Zhejiang University Science B
VL - 9
IS - 2
SP - 93
EP - 99
%@ 1673-1581
Y1 - 2008
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B0710599


Abstract: 
Objective: To explore the relationship between genetic polymorphisms in methylenetetrahydrofolate reductase (MTHFR), methionine synthase reductase (MTRR), the central enzymes in folate metabolism that affects DNA methylation and synthesis, and the risk of down syndrome in China. Methods: Genomic DNA was isolated from the peripheral lymphocytes of 64 mothers of children with down syndrome and 70 age matched control subjects. Polymerase chain reaction and restriction fragment length polymorphism were used to examine the polymorphisms of MTHFR 677C→T, MTRR 66A→G and the relationship between these genotypes and the risk of down syndrome was analyzed. Results: The results show that the MTHFR 677C→T polymorphism is more prevalent among mothers of children with down syndrome than among control mothers, with an odds ratio of 3.78 (95% confidence interval (CI), 1.78~8.47). In addition, the homozygous MTRR 66A→G polymorphism was independently associated with a 5.2-fold increase in estimated risk (95% CI, 1.90~14.22). The combined presence of both polymorphisms was associated with a greater risk of down syndrome than the presence of either alone, with an odds ratio of 6.0 (95% CI, 2.058~17.496). The two polymorphisms appear to act without a multiplicative interaction. Conclusion: MTHFR and MTRR gene mutation alleles are related to down syndrome, and CT, TT and GG gene mutation types increase the risk of down syndrome.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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Open peer comments: Debate/Discuss/Question/Opinion

<1>

Maplle

2010-01-29 10:47:12

This is a very impressive research. It provides an excellent description of polymorphisms in genes involved in folate metabolism as maternal risk factors.

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