Research Article

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10/29/2013
Folate; Glioma; MGMT; MTHFR; Polymorphisms

Hypomethylation of the O6-methylguanine-DNA-methyltransferase (MGMT) promoter in glioma cells has been associated with temozolomide resistance. S-adenosylmethionine (SAM), which is produced during folate metabolism, is the main source of methyl groups during DNA methylation. As a key enzyme during folate metabolism, polymorphisms of 5,10-methylenetetrahydrofolate reductase (MTHFR) may ... more

N. Liu; J. Jiang; Y.J. Song; S.G. Zhao; Z.G. Tong; H.S. Song; H. Wu; J.Y. Zhu; Y.H. Gu; Y. Sun; W. Hua; J.P. Qi
10/31/2014
Breast cancer; Folate; MTHFR; Polymorphism; Vitamin

We investigated the association between dietary intake of folate, vitamin B6, and the 5,10-methylenetetrahydrofolate reductase (MTHFR) genotype with breast cancer. A matched case-control study was conducted, and 413 patients with newly diagnosed and histologically confirmed breast cancer and 436 controls were recruited. Folate intake, vitamin B6, and vitamin B12 levels were ... more

J.M. He; Y.D. Pu; Y.J. Wu; R. Qin; Q.J. Zhang; Y.S. Sun; W.W. Zheng; L.P. Chen
09/29/2014
A1298C polymorphism; C677T polymorphism; Ethnic groups; Mixteca; MTHFR; Nahua

In this study, we examined the distribution of genotype and allele frequencies of the C677T and A1298C polymorphisms in the methylenetetrahydrofolate-reductase gene (MTHFR) in two ethnic groups in the State of Guerrero, Mexico, which were compared with those of the Mestizo population of the region. A comparative study was conducted on 455 women from two ethnic groups and a group ... more

V. Antonio-Véjar; O. del Moral-Hernández; L.C. Alarcón-Romero; E. Flores-Alfaro; M.A. Leyva-Vázquez; D. Hernández-Sotelo; B. Illades-Aguiar
07/24/2014
Breast cancer; Folate; MTHFR; Polymorphism

We conducted a hospital-based case-control study to investigate the associations of dietary intake of folate and MTHFR C677T and A1298C polymorphisms with breast cancer in a Chinese population. A 1:1-matched case-control study was conducted. Two hundred and thirty patients who were newly diagnosed and histologically confirmed breast cancer and 230 controls were enrolled from Xinxiang ... more

Z.G. Wang; W. Cui; L.F. Yang; Y.Q. Zhu; W.H. Wei
03/26/2014
bifida; Diabetes; Folic acid; MTHFR; Neural tube defects

Abnormalities in maternal folate and carbohydrate metabolism have both been shown to induce neural tube defects (NTD) in humans and animal models. However, the relationship between these two factors in the development of NTDs remains unclear. Data from mothers of children with spina bifida seen at the Unidad de Espina Bífida del Hospital Infantil Virgen del Rocío (case group) were ... more

N.M. Cadenas-Benitez; F. Yanes-Sosa; A. Gonzalez-Meneses; L. Cerrillos; D. Acosta; J.M. Praena-Fernandez; O. Neth; G. de Terreros; P. Ybot-González
04/27/2015
Breast cancer; C677T polymorphism; Mexican population; MTHFR

The methylenetetrahydrofolate reductase (MTHFR) gene plays an important role in the steps involved in the processing of amino acids. The analysis of polymorphisms in the MTHFR gene has revealed associations with cancer; in particular the C677T polymorphism, which has been suggested to affect folate metabolism, DNA methylation, synthesis, and repair, and to contribute to ... more

A. Ramos-Silva; L.E. Figuera; O.M. Soto-Quintana; A.M. Puebla-Pérez; R. Ramírez-Patiño; I. Gutiérrez-Hurtado; D.I. Carrillo-Moreno; G.M. Zúñiga-González; I.P. Dávalos-Rodríguez; M.P. Gallegos-Arreola
10/21/2015
DNMT3B -149C/T polymorphism; Genetic susceptibility; LSCC; Risk

A variety of molecular epidemiological studies have been conducted to examine the association between the DNMT3B -149C/T polymorphism and cancer susceptibility; however, there has been no study investigating the association between the DNMT3B -149C/T polymorphism and the risk of laryngeal squamous cell carcinoma (LSCC) until now. To determine the role of the DNMT3B ... more

X.M. Zhang; S. Li; Q.M. Zhang
04/26/2016
Bladder cancer; CYP1A2; Polymorphism; Risk

To date, no study has investigated the association between CYP1A2-163C/A polymorphism and bladder cancer risk in a Chinese population. Here, we extracted genomic DNA from peripheral white blood cells, and differentiated CYP1A2 alleles by polymerase chain reaction-based restriction fragment length polymorphism methods. Differences in genotype frequencies between the cases ... more

Y.L. Song; L. Wang; J.C. Ren; Z.H. Xu; Y.L. Song; L. Wang; J.C. Ren; Z.H. Xu; Y.L. Song; L. Wang; J.C. Ren; Z.H. Xu
1/23/2017
Female; Genetic predisposition to disease; High-Throughput Nucleotide Sequencing; Humans; Macular Degeneration; male; Proteins; Risk; Turkey

Age-related macular degeneration (AMD) is the leading cause of blindness in developed countries. It is a complex disease with both genetic and environmental risk factors. To improve clinical management of this condition, it is important to develop risk assessment and prevention strategies for environmental influences, and establish a more effective treatment approach. The aim of the present ... more

H. Bardak; M. Gunay; Y. Ercalik; Y. Bardak; H. Ozbas; O. Bagci
2/08/2017
Alleles; Asian People; Case-control studies; China; Connexin 26; Connexins; Deafness; Female; Genotype; Humans; Odds Ratio; Polymorphism, Genetic; Pregnancy; Risk; Sequence Deletion

Congenital deafness is a serious and irreversible condition in humans. The GJB2 gene is implicated in the pathogenesis of autosomal recessive nonsyndromic hearing loss. Its 235delC and 30-35delG polymorphisms are reported to be associated with risk of hereditary deafness. However, the effect of the interaction between GJB2 235delC and 30-35delG and environmental factors on congenital deafness ... more

Y. Xiong; M. Zhong; J. Chen; Y.L. Yan; X.F. Lin; X. Li

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