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100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls

OBJECTIVE: Combined hormonal contraceptive (CHC) use has been associated with higher total 25-hydroxyvitamin D (25(OH)D) levels. Here, we investigate the relation between CHC use and vitamin D metabolism to elucidate its clinical interpretation. METHODS: The cross-sectional Fit Futures 1 included 10...

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Autores principales: Öberg, Johanna, Jorde, Rolf, Figenschau, Yngve, Thorsby, Per Medbøe, Dahl, Sandra Rinne, Winther, Anne, Grimnes, Guri
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Bioscientifica Ltd 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002185/
https://www.ncbi.nlm.nih.gov/pubmed/35213326
http://dx.doi.org/10.1530/EC-21-0395
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author Öberg, Johanna
Jorde, Rolf
Figenschau, Yngve
Thorsby, Per Medbøe
Dahl, Sandra Rinne
Winther, Anne
Grimnes, Guri
author_facet Öberg, Johanna
Jorde, Rolf
Figenschau, Yngve
Thorsby, Per Medbøe
Dahl, Sandra Rinne
Winther, Anne
Grimnes, Guri
author_sort Öberg, Johanna
collection PubMed
description OBJECTIVE: Combined hormonal contraceptive (CHC) use has been associated with higher total 25-hydroxyvitamin D (25(OH)D) levels. Here, we investigate the relation between CHC use and vitamin D metabolism to elucidate its clinical interpretation. METHODS: The cross-sectional Fit Futures 1 included 1038 adolescents. Here, a subgroup of 182 girls with available 25(OH)D, 1,25-dihydroxyvitamin D (1,25(OH)(2)D), 24,25-dihydroxyvitamin D (24,25(OH)(2)D), vitamin D-binding protein (DBP) and measured free 25(OH)D levels, in addition to parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF23), was investigated. Vitamin D metabolites were compared between girls using (CHC+) and not using CHC (CHC−). Further, the predictability of CHC on 25(OH)D levels was assessed in a multiple regression model including lifestyle factors. The ratios 1,25(OH)(2)D/25(OH)D and 24,25(OH)(2)D/25(OH)D (vitamin D metabolite ratio (VMR)) in relation to 25(OH)D were presented in scatterplots. RESULTS: CHC+ (n  = 64; 35% of the girls) had higher 25(OH)D levels (mean ± s.d., 60.3 ± 22.2) nmol/L) than CHC- (n  = 118; 41.8 ± 19.3 nmol/L), P -values <0.01. The differences in 25(OH)D levels between CHC+ and CHC− were attenuated but remained significant after the adjustment of lifestyle factors. CHC+ also had higher levels of 1,25(OH)(2)D, 24,25(OH)(2)D, DBP and calcium than CHC−, whereas 1,25(OH)(2)D/25(OH)D, PTH, FGF23 and albumin were significantly lower. Free 25(OH)D and VMR did not statistically differ, and both ratios appeared similar in relation to 25(OH)D, irrespective of CHC status. CONCLUSION: This confirms a clinical impact of CHC on vitamin D levels in adolescents. Our observations are likely due to an increased DBP-concentration, whereas the free 25(OH)D appears unaltered.
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spelling pubmed-90021852022-04-12 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls Öberg, Johanna Jorde, Rolf Figenschau, Yngve Thorsby, Per Medbøe Dahl, Sandra Rinne Winther, Anne Grimnes, Guri Endocr Connect Research OBJECTIVE: Combined hormonal contraceptive (CHC) use has been associated with higher total 25-hydroxyvitamin D (25(OH)D) levels. Here, we investigate the relation between CHC use and vitamin D metabolism to elucidate its clinical interpretation. METHODS: The cross-sectional Fit Futures 1 included 1038 adolescents. Here, a subgroup of 182 girls with available 25(OH)D, 1,25-dihydroxyvitamin D (1,25(OH)(2)D), 24,25-dihydroxyvitamin D (24,25(OH)(2)D), vitamin D-binding protein (DBP) and measured free 25(OH)D levels, in addition to parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF23), was investigated. Vitamin D metabolites were compared between girls using (CHC+) and not using CHC (CHC−). Further, the predictability of CHC on 25(OH)D levels was assessed in a multiple regression model including lifestyle factors. The ratios 1,25(OH)(2)D/25(OH)D and 24,25(OH)(2)D/25(OH)D (vitamin D metabolite ratio (VMR)) in relation to 25(OH)D were presented in scatterplots. RESULTS: CHC+ (n  = 64; 35% of the girls) had higher 25(OH)D levels (mean ± s.d., 60.3 ± 22.2) nmol/L) than CHC- (n  = 118; 41.8 ± 19.3 nmol/L), P -values <0.01. The differences in 25(OH)D levels between CHC+ and CHC− were attenuated but remained significant after the adjustment of lifestyle factors. CHC+ also had higher levels of 1,25(OH)(2)D, 24,25(OH)(2)D, DBP and calcium than CHC−, whereas 1,25(OH)(2)D/25(OH)D, PTH, FGF23 and albumin were significantly lower. Free 25(OH)D and VMR did not statistically differ, and both ratios appeared similar in relation to 25(OH)D, irrespective of CHC status. CONCLUSION: This confirms a clinical impact of CHC on vitamin D levels in adolescents. Our observations are likely due to an increased DBP-concentration, whereas the free 25(OH)D appears unaltered. Bioscientifica Ltd 2022-02-25 /pmc/articles/PMC9002185/ /pubmed/35213326 http://dx.doi.org/10.1530/EC-21-0395 Text en © The authors https://creativecommons.org/licenses/by-nc/4.0/This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. (https://creativecommons.org/licenses/by-nc/4.0/)
spellingShingle Research
Öberg, Johanna
Jorde, Rolf
Figenschau, Yngve
Thorsby, Per Medbøe
Dahl, Sandra Rinne
Winther, Anne
Grimnes, Guri
100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls
title 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls
title_full 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls
title_fullStr 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls
title_full_unstemmed 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls
title_short 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls
title_sort 100 years of vitamin d: combined hormonal contraceptives and vitamin d metabolism in adolescent girls
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9002185/
https://www.ncbi.nlm.nih.gov/pubmed/35213326
http://dx.doi.org/10.1530/EC-21-0395
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