Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 351670
Title Association of folate with hearing is dependent on the 5, 10-methylenetetrahydrofolate reductase 677C-->T mutation
Author(s) Durga, J.; Anteunis, L.J.C.; Schouten, E.G.; Bots, M.L.; Kok, F.J.; Verhoef, P.
Source Neurobiology of aging 27 (2006)3. - ISSN 0197-4580 - p. 482 - 489.
DOI https://doi.org/10.1016/j.neurobiolaging.2005.03.002
Department(s) Chair Nutrition and Health over the Lifecourse
Chair Nutrition and Disease
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2006
Keyword(s) cardiovascular risk-factors - methylenetetrahydrofolate reductase - homocysteine concentrations - common mutation - disease - plasma - epidemiology - atherosclerosis - vitamin-b-12 - impairment
Abstract Vascular disease and its risk factors have been associated with the age-related hearing loss. We examined the association of elevated plasma homocysteine and its determinants with hearing levels. Pure-tone air conduction thresholds in 728 individuals with sensorineural hearing loss were not associated with homocysteine, erythrocyte folate and Vitamin B6. Low concentrations of serum folate and Vitamin B12 were associated with better hearing. When folate status was below the median, 5,10-methylenetetrahydrofolate reductase (MTHFR) 677TT homozygotes had similar hearing levels to subjects with a C allele. However, when folate status was above the median, MTHFR 677TT homozygotes had on an average 5 dB (p = 0.037) and 2.6 dB (p = 0.021) lower PTA-high and PTA-low hearing thresholds, respectively, than the subjects with a 677C allele. The relationship between serum folate and hearing thresholds appeared to be dependent on MTHFR 677 genotype (CC, r = 0.13, p = 0.034; TT, r = -0.10, p = 0.291). This supports the hypothesis that a greater one-carbon moiety commitment to de novo synthesis of nucleotides and an increase in formyl-folate derivatives relative to methyl-folate derivatives is protective for hearing.
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