Vitamin D supplementation as an adjuvant therapy for patients with T2DM: an 18-month prospective interventional study

Cardiovascular Diabetology

Original Investigation

Emad El-Kholie¹  Khalid M Alkharfy²  Majed S Alokail³  Nasser M Al-Daghri³  George P Chrousos⁴  Shaun Sabico⁵  Sudhesh Kumar⁶  Abdulaziz Al-Othman⁷  Osama Moharram⁸  Yousef Al-Saleh⁹ 

[1] Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, PO Box, 2455, 11451, Riyadh, Kingdom of Saudi Arabia;Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, PO Box, 2455, 11451, Riyadh, Kingdom of Saudi Arabia;Center of Excellence in Biotechnology Research Center, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;Clinical Pharmacy Department, College of Pharmacy, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, PO Box, 2455, 11451, Riyadh, Kingdom of Saudi Arabia;Center of Excellence in Biotechnology Research Center, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;Prince Mutaib Chair for Biomarkers of Osteoporosis, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, PO Box, 2455, 11451, Riyadh, Kingdom of Saudi Arabia;First Department of Pediatrics, Athens University Medical School, 11527, Athens, Greece;Biomarkers Research Program, Biochemistry Department, College of Science, King Saud University, PO Box, 2455, 11451, Riyadh, Kingdom of Saudi Arabia;Prince Mutaib Chair for Biomarkers of Osteoporosis, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;Clinical Sciences Research Institute, Diabetes and Metabolism Unit, CV47AL, Coventry, UK;College of Applied Medical Sciences, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;King Abdulaziz University Hospital, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;Prince Mutaib Chair for Biomarkers of Osteoporosis, King Saud University, 11451, Riyadh, Kingdom of Saudi Arabia;College of Medicine, King Saud University for Health Sciences, 11426, Riyadh, Kingdom of Saudi Arabia;

关键词: Vitamin D;    Diabetes mellitus;    Saudi;    Supplementation;   

DOI  :  10.1186/1475-2840-11-85

 received in 2012-06-02, accepted in 2012-07-18,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundVitamin D deficiency has been associated with impaired human insulin action, suggesting a role in the pathogenesis of diabetes mellitus type 2 (T2DM). In this prospective interventional study we investigated the effects of vitamin D3 supplementation on the metabolic profiles of Saudi T2DM subjects pre- and post-vitamin D supplementation over an 18-month period.MethodsT2DM Saudi subjects (men, N = 34: Age: 56.6 ± 8.7 yr, BMI, 29.1 ± 3.3 kg/m2; women, N = 58: Age: 51.2 ± 10.6 yr, BMI 34.3 ± 4.9 kg/m2;) were recruited and given 2000 IU vitamin D3 daily for 18 months. Anthropometrics and fasting blood were collected (0, 6, 12, 18 months) to monitor serum 25-hydroxyvitamin D using specific ELISA, and to determine metabolic profiles by standard methods.ResultsIn all subjects there was a significant increase in mean 25-hydroxyvitamin D levels from baseline (32.2 ± 1.5 nmol/L) to 18 months (54.7 ± 1.5 nmol/L; p  < 0.001), as well as serum calcium (baseline = 2.3 ± 0.23 mmol/L vs. 18 months = 2.6 ± 0.1 mmol/L; p = 0.003). A significant decrease in LDL- (baseline = 4.4 ± 0.8 mmol/L vs. 18 months = 3.6 ± 0.8 mmol/L, p  < 0.001] and total cholesterol (baseline = 5.4 ± 0.2 mmol/L vs. 18 months = 4.9 ± 0.3 mmol/L, p < 0.001) were noted, as well as a significant improvement in HOMA-β function ( p  = 0.002). Majority of the improvements elicited were more prominent in women than men.ConclusionIn the Saudi T2DM population receiving oral Vitamin D3 supplementation (2000 IU/day), circulating 25-hydroxyvitamin D levels remained below normal 18 months after the onset of treatment. Yet, this “suboptimal” supplementation significantly improved lipid profile with a favorable change in HDL/LDL ratio, and HOMA-β function, which were more pronounced in T2DM females.

【 授权许可】

CC BY   
© Al-Daghri et al.; licensee BioMed Central Ltd. 2012