C677T methylenetetrahydrofolate reductase polymorphism interferes with the effects of folic acid and zinc sulfate on sperm concentration

被引:110
作者
Ebisch, IMW
van Heerde, WL
Thomas, CMG
van der Put, N
Wong, WY
Steegers-Theunissen, RPM
机构
[1] Univ Nijmegen, Med Ctr, Dept Epidemiol & Biostat, NL-6500 HB Nijmegen, Netherlands
[2] Univ Nijmegen, Med Ctr, Lab Pediat & Neurol, NL-6500 HB Nijmegen, Netherlands
[3] Univ Nijmegen, Med Ctr, Dept Chem Endocrinol, NL-6500 HB Nijmegen, Netherlands
[4] Univ Nijmegen, Med Ctr, Cent Hematol Lab, NL-6500 HB Nijmegen, Netherlands
[5] Univ Nijmegen, Med Ctr, Dept Obstet & Gynecol, NL-6500 HB Nijmegen, Netherlands
关键词
folic acid; MTHFR polymorphism; male factor subfertility; semen parameters; supplement; nutrients; treatment; zinc;
D O I
10.1016/S0015-0282(03)02157-5
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
Objective: To determine the frequency of C677T methylenetetrahydrofolate reductase (MTHFR) polymorphism in fertile and subfertile males, and the MTHFR-dependent response of sperm concentration after folic acid and/or zinc sulfate intervention. Design: Double-blind, placebo-controlled intervention study. Setting: Two outpatient fertility clinics and nine midwifery practices in The Netherlands. Patient(s): One hundred thirteen fertile and 77 subfertile males. Intervention(s): Daily capsules of folic acid (5 mg) and/or zinc sulfate (66 mg), or placebo for 26 weeks. Main Outcome Measure(s): Prevalence of C677T MTHFR polymorphism and the response of sperm concentration related to MTHFR carriership after intervention treatment. Result(s): The C677T methylenetetrahydrofolate reductase genotypes were comparable in fertile and subfertile males. Independent of fertility state, sperm concentration significantly increased in wild-types after folic acid and zinc sulfate treatment only. Heterozygotes and homozygotes did not significantly benefit from either treatment. Conclusion(s): C677T methylenetetrahydrofolate reductase polymorphism is not a risk factor for male factor subfertility. In contrast to heterozygotes and homozygotes for C677T MTHFR polymorphism, sperm concentration in wild-types significantly improved after folic acid and zinc sulfate intervention. A stronger role of other folate genes on spermatogenesis is suggested. (C)2003 by American Society for Reproductive Medicine.
引用
收藏
页码:1190 / 1194
页数:5
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