Vitamin B-6 and riboflavin, their metabolic interaction, and relationship with MTHFR genotype in adults aged 18–102 years

The generation of the active form of vitamin B-6, pyridoxal 5′-phosphate (PLP), in tissues is dependent upon riboflavin as flavin mononucleotide, but whether this interaction is important for maintaining vitamin B-6 status is unclear. To investigate vitamin B-6 and riboflavin status, their metabolic...

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Published in:The American journal of clinical nutrition 2022-12, Vol.116 (6), p.1767-1778
Main Authors: Jarrett, Harry, McNulty, Helene, Hughes, Catherine F, Pentieva, Kristina, Strain, J J, McCann, Adrian, McAnena, Liadhan, Cunningham, Conal, Molloy, Anne M, Flynn, Albert, Hopkins, Sinead M, Horigan, Geraldine, O’Connor, Ciara, Walton, Janette, McNulty, Breige A, Gibney, Michael J, Lamers, Yvonne, Ward, Mary
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Language:eng
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Summary:The generation of the active form of vitamin B-6, pyridoxal 5′-phosphate (PLP), in tissues is dependent upon riboflavin as flavin mononucleotide, but whether this interaction is important for maintaining vitamin B-6 status is unclear. To investigate vitamin B-6 and riboflavin status, their metabolic interaction, and relationship with methylenetetrahydrofolate reductase (MTHFR) genotype in adulthood. Data from 5612 adults aged 18–102 y were drawn from the Irish National Adult Nutrition Survey (NANS; population-based sample) and the Trinity-Ulster Department of Agriculture (TUDA) and Genovit cohorts (volunteer samples). Plasma PLP and erythrocyte glutathione reductase activation coefficient (EGRac), as a functional indicator of riboflavin, were determined. Older (≥65 y) compared with younger (
ISSN:0002-9165
1938-3207