Effect of moderate-dose vitamin D supplementation on insulin sensitivity in vitamin D–deficient non-Western immigrants in the Netherlands: a randomized placebo-controlled trial
| Autor: | Natasja M. van Schoor, Rosa Meijnen, Paul Lips, Dirk L. Knol, Mark H. H. Kramer, Prabath W. B. Nanayakkara, Mirjam M. Oosterwerff, Elisabeth M. W. Eekhoff, A Joan P Boeke |
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| Přispěvatelé: | EMGO+ - Lifestyle, Overweight and Diabetes, Internal medicine, Epidemiology and Data Science, ICaR - Circulation and metabolism, EMGO - Lifestyle, overweight and diabetes |
| Rok vydání: | 2014 |
| Předmět: |
Blood Glucose
Male medicine.medical_treatment Medicine (miscellaneous) Type 2 diabetes Body Mass Index chemistry.chemical_compound Risk Factors Insulin-Secreting Cells Prevalence Insulin Prediabetes Vitamin D Cholecalciferol Netherlands Nutrition and Dietetics SDG 10 - Reduced Inequalities Middle Aged Treatment Outcome Female Adult Vitamin medicine.medical_specialty Emigrants and Immigrants vitamin D deficiency Prediabetic State Young Adult Insulin resistance Double-Blind Method Internal medicine Vitamin D and neurology medicine Humans Obesity Aged Dose-Response Relationship Drug business.industry Glucose Tolerance Test Overweight Vitamin D Deficiency medicine.disease Endocrinology chemistry Dietary Supplements Insulin Resistance business Follow-Up Studies |
| Zdroj: | Oosterwerff, M M, Eekhoff, E M W, van Schoor, N M, Boeke, A J P, Nanayakkara, P W B, Meijnen, R, Knol, D L, Kramer, M H H & Lips, P T A M 2014, ' Effect of moderate-dose vitamin D supplementation on insulin sensitivity in vitamin D-deficient non-Western immigrants in the Netherlands: a randomized placebo-controlled trial ', The American Journal of Clinical Nutrition, vol. 100, no. 1, pp. 152-160 . https://doi.org/10.3945/ajcn.113.069260 The American Journal of Clinical Nutrition, 100(1), 152-160. Oxford University press Oosterwerff, M M, Eekhoff, E M W, van Schoor, N M, Boeke, A J P, Nanayakkara, P W B, Meijnen, R, Knol, D L, Kramer, M H H & Lips, P T A M 2014, ' Effect of moderate-dose vitamin D supplementation on insulin sensitivity in vitamin D-deficient non-Western immigrants in the Netherlands: a randomized placebo-controlled trial ', American Journal of Clinical Nutrition, vol. 100, no. 1, pp. 152-160 . https://doi.org/10.3945/ajcn.113.069260 American Journal of Clinical Nutrition, 100(1), 152-160. American Society for Nutrition |
| ISSN: | 0002-9165 |
| DOI: | 10.3945/ajcn.113.069260 |
| Popis: | Background: Low serum 25-hydroxyvitamin D [25(OH)D] concentrations have been associated with insulin resistance, the metabolic syndrome, and type 2 diabetes. Because many non-Western immigrants in the Netherlands are vitamin D deficient, obese, and at high risk of diabetes, vitamin D supplementation may contribute to prevent diabetes and insulin resistance. Objective: We examined the effect of vitamin D supplementation on insulin sensitivity and b cell function in overweight, vitamin D‐ deficient, non-Western immigrants at high risk of diabetes. Design: The study was a 16-wk, randomized, placebo-controlled trial. A total of 130 non-Western immigrants with prediabetes (fasting glucose concentration .5.5 mmol/L or random glucose concentration from 7.8 to 11.1 mmol/L) and vitamin D deficiency (serum 25[OH]D concentration ,50 nmol/L) were randomly assigned after stratification by sex to receive either cholecalciferol (1200 IU/d) or a placebo for 16 wk. All participants received 500 mg Ca/d as calcium carbonate. The primary outcome was the difference in the area under the curve of insulin and glucose after a 75-g oral-glucose-tolerance test after 4 mo of treatment. Secondary outcomes were insulin-sensitivity variables, b cell‐function variables, and metabolic syndrome. Results: Mean serum 25(OH)D concentrations increased significantly in the vitamin D compared with placebo groups. After 4 mo of therapy, the mean between-group difference was 38 nmol/L (95% CI: 32.1, 43.9 nmol/L; P , 0.001). There was no significant effect on insulin sensitivity and b cell function. In a post hoc analysis, when patients with diabetes at baseline were excluded, a significant increase in the insulinogenic index was observed in participants who obtained a 25(OH)D concentration $60 nmol/L (P =0 .040). Conclusions: Vitamin D supplementation in non-Western vitamin D‐deficient immigrants with prediabetes did not improve insulin sensitivity or b cell function or change the incidence of metabolic syndrome. However, after the exclusion of diabetic subjects, an improvement in the insulinogenic index was observed in participants who obtained a 25(OH)D concentration $60 nmol/L. This trial was registered at trialregister.nl as NTR1827. Am J Clin Nutr 2014;100:152‐60. |
| Databáze: | OpenAIRE |
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