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Fawzi WW, Wang D. When should universal distribution of periodic high-dose vitamin A to children cease? Am J Clin Nutr 2021; 113:769-771. [PMID: 33751042 DOI: 10.1093/ajcn/nqaa428] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Wafaie W Fawzi
- Department of Global Health and Population, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Dongqing Wang
- Department of Global Health and Population, Harvard TH Chan School of Public Health, Boston, MA, USA
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Graßmann S, Pivovarova-Ramich O, Henze A, Raila J, Ampem Amoako Y, King Nyamekye R, Bedu-Addo G, Mockenhaupt FP, Schulze MB, Danquah I. SNP rs6564851 in the BCO1 Gene Is Associated with Varying Provitamin a Plasma Concentrations but Not with Retinol Concentrations among Adolescents from Rural Ghana. Nutrients 2020; 12:E1786. [PMID: 32560166 PMCID: PMC7353293 DOI: 10.3390/nu12061786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 06/10/2020] [Accepted: 06/12/2020] [Indexed: 11/16/2022] Open
Abstract
In sub-Saharan Africa, vitamin A deficiency constitutes a severe health problem despite various supplementation and food fortification programs. Given that the intake of preformed vitamin A from animal products remains low in these countries, an efficient metabolization of plant-based provitamin A carotenoids is essential. Previously, adolescents in rural Ghana have shown high total plasma carotenoid concentrations, while 36% had a vitamin A deficiency (defined as plasma retinol < 0.7 µmol/L). Hence, the aim of this cross-sectional study was to identify the relationships between variants in the β-carotene 15,15'-oxygenase (BCO1) gene and plasma carotenoid concentrations among 189 15-year-old girls and boys in rural Ghana. BCO1 rs6564851, rs7500996, rs10048138 and PKD1L2 rs6420424, and rs8044334 were typed, and carotenoid concentrations were compared among the different genotypes. G allele carriers of rs6564851 (53%) showed higher plasma carotenoid concentrations than T allele carriers (median (interquartile range): 3.07 (2.17-4.02) vs. 2.59 (2.21-3.50) µmol/L, p-value = 0.0424). This was not explained by differences in socio-demographic or dietary factors. In contrast, no differences in plasma retinol concentrations were observed between these genotypes. Pending verification in independent populations, the low conversion efficiency of provitamin A carotenoids among rs6564851 G allele carriers may undermine existing fortification and supplementation programs to improve the vitamin A status in sub-Saharan Africa.
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Affiliation(s)
- Sophie Graßmann
- Department Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; (S.G.); (M.B.S.)
| | - Olga Pivovarova-Ramich
- Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany;
- Department of Endocrinology, Diabetes and Nutrition, Charité—Universitaetsmedizin Berlin, 13125 Berlin, Germany
- German Center for Diabetes Research (DZD), 85764 Munich-Neuherberg, Germany
| | - Andrea Henze
- Junior Research Group ProAID, Institute of Nutritional Science, Potsdam University, 14558 Nuthetal, Germany;
| | - Jens Raila
- Physiology and Pathophysiology of Nutrition, Institute of Nutrition Science, Potsdam University, 14558 Nuthetal, Germany;
| | - Yaw Ampem Amoako
- Komfo Anokye Teaching Hospital, Kwame Nkrumah University of Science and Technology (KNUST), P.O. Box 1934 Kumasi, Ghana; (Y.A.A.); (G.B.-A.)
| | | | - George Bedu-Addo
- Komfo Anokye Teaching Hospital, Kwame Nkrumah University of Science and Technology (KNUST), P.O. Box 1934 Kumasi, Ghana; (Y.A.A.); (G.B.-A.)
| | - Frank P. Mockenhaupt
- Institute of Tropical Medicine and International Health, Charité—Universitaetsmedizin Berlin, 13353 Berlin, Germany;
| | - Matthias B. Schulze
- Department Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; (S.G.); (M.B.S.)
| | - Ina Danquah
- Department Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; (S.G.); (M.B.S.)
- Heidelberg Institute of Global Health (HIGH), Universitaetsklinikum Heidelberg, 69120 Heidelberg, Germany
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