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Zhonghua Liu Xing Bing Xue Za Zhi ; 25(6): 499-502, 2004 Jun.
Article in Chinese | MEDLINE | ID: mdl-15231126

ABSTRACT

OBJECTIVE: To describe the distribution of reduced folate carrier gene (RFC1)genotype and allele frequency between southern and northern, female and male Chinese population. METHOD: RFC1 (A80G) genotype was detected, using polymerase chain reaction-restriction fragment length polymorphism (RFLP-PCR) on 720 blood spot DNA from the normal subjects. RESULTS: The frequencies of the northern population with AA, GG and GA genotypes were 22.28%, 31.09% and 46.63%, and the frequencies of the southern population were 18.56%, 22.75% and 58.68%, respectively. Findings showed that there were significant differences between southerners and northerners in RFC1 (A80G) genotype (P < 0.01). There was no significant difference between G allele frequency of the northern (52.10%) and southern population (54.40%). The frequencies of male with RFC1 (A80G) AA, GG and GA genotype were 24.88%, 25.85% and 49.27%, and among female were 18.83%, 27.77% and 53.40%, respectively. There were no significant differences between male and female in RFC1 genotype (P > 0.05), or between G allele frequency in female (50.49%) and that in male (54.47%). CONCLUSIONS: The distribution of RFC1 genotype seemed to be consistent with neural tube defects (NTDs) while its prevalence among the northerners was higher than that of southerners, with female having a higher NTDs prevalence. This study provided genetic epidemiological data for etiological hypothesis between RFC1 and diseases relative to folate metabolism.


Subject(s)
Carrier Proteins/genetics , Folic Acid/metabolism , Membrane Transport Proteins , Polymorphism, Genetic/genetics , Alleles , Carrier Proteins/physiology , China/ethnology , Female , Genetic Predisposition to Disease , Genotype , Humans , Male , Membrane Proteins/genetics , Methylenetetrahydrofolate Reductase (NADPH2) , Mutation/genetics , Neural Tube Defects/genetics , Polymerase Chain Reaction , Polymorphism, Restriction Fragment Length
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