Sex-dependent association of vitamin D with insulin resistance in humans

• Verfasst von: Chen, Xin [VerfasserIn]
• Verfasst von: Chu, Chang [VerfasserIn]
• Verfasst von: Doebis, Cornelia [VerfasserIn]
• Verfasst von: von Baehr, Volker [VerfasserIn]
• Verfasst von: Hocher, Berthold [VerfasserIn]
• Titel: Sex-dependent association of vitamin D with insulin resistance in humans
• Verf.angabe: Xin Chen, Chang Chu, Cornelia Doebis, Volker von Baehr, and Berthold Hocher
• E-Jahr: 2021
• Jahr: September 2021
• Umfang: 9 S.
• Fussnoten: First published online: 1 April 2021 ; Gesehen am 29.08.2023
• Titel Quelle: Enthalten in: The journal of clinical endocrinology & metabolism
• Ort Quelle: Oxford : Oxford University Press, 1941
• Jahr Quelle: 2021
• Band/Heft Quelle: 106(2021), 9 vom: Sept., Seite e3739-e3747
• ISSN Quelle: 1945-7197
• DOI: doi:10.1210/clinem/dgab213
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 185814549X

Abstract

Animal studies suggested that vitamin D might decrease insulin resistance. Estrogen increased insulin sensitivity and glucose tolerance in rodents. However, sex-specific association of vitamin D with insulin resistance in humans remains unclear.To investigate the sex-dependency of the association of insulin resistance and 25-hydroxyvitamin D [25(OH)D] in a large Caucasian population.Cross-sectional study from out-patients’ blood samples with measurements of 25(OH)D and homeostatic model assessment of insulin resistance (HOMA-IR) drawn at exactly the same day (n = 1887). This cohort was divided into 3 groups: (1) group with vitamin D deficiency (n = 1190), (2) group with vitamin D sufficiency (n = 686), and (3) vitamin D excess groups (n = 11); the vitamin D excess group was excluded from further analysis due to the small size.Analysis of the entire study population showed that serum 25(OH)D was inversely associated with HOMA-IR [Spearman correlation coefficient (rs) = −0.19, P < 0.0001]. When considering the vitamin D status, this association was only seen in the vitamin D deficiency group but not in the vitamin D sufficient group. The correlation was sex-dependent: HOMA-IR was inversely correlated with vitamin D in women with vitamin D deficiency (rs = −0.26, P < 0.0001) but not in men with vitamin D deficiency (rs = 0.01, P = 0.714). After multivariate linear regression analysis considering confounding factors, this relationship was again only seen in women.Vitamin D was inversely and independently associated with insulin resistance only in women with vitamin D deficiency. Based on our data, we suggest that in particular vitamin D deficient women might benefit from vitamin D substitution by improving insulin resistance. This, however, needs to be proven in adequately designed double-blind placebo-controlled clinical studies.