Effects of calcium-vitamin D co-supplementation on glycaemic control, inflammation and oxidative stress in gestational diabetes: A randomised placebo-controlled trial

Asemi, Z. and Karamali, M. and Esmaillzadeh, A. (2014) Effects of calcium-vitamin D co-supplementation on glycaemic control, inflammation and oxidative stress in gestational diabetes: A randomised placebo-controlled trial. Diabetologia, 57 (9). pp. 1798-1806.

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Aims/hypothesis: This study was designed to assess the effects of calcium and vitamin D supplementation on the metabolic status of pregnant women with gestational diabetes mellitus (GDM). Methods: This randomised placebo-controlled trial was performed at maternity clinics affiliated to Kashan University of Medical Sciences, Kashan, Iran. Participants were 56 women with GDM at 24-28 weeks' gestation (18 to 40 years of age). Subjects were randomly assigned to receive calcium plus vitamin D supplements or placebo. All study participants were blinded to group assignment. Individuals in the calcium-vitamin D group (n = 28) received 1,000 mg calcium per day and a 50,000 U vitamin D3 pearl twice during the study (at study baseline and on day 21 of the intervention), and those in the placebo group (n = 28) received two placebos at the mentioned times. Fasting blood samples were taken at study baseline and after 6 weeks of intervention. Results: The study was completed by 51 participants (calcium-vitamin D n = 25, placebo n = 26). However, as the analysis was based on an intention-to-treat approach, all 56 women with GDM (28 in each group) were included in the final analysis. After the administration of calcium plus vitamin D supplements, we observed a significant reduction in fasting plasma glucose (-0.89 ± 0.69 vs +0.26 ± 0.92 mmol/l, p < 0.001), serum insulin levels (-13.55 ± 35.25 vs +9.17 ± 38.50 pmol/l, p = 0.02) and HOMA-IR (-0.91 ± 1.18 vs +0.63 ± 2.01, p = 0.001) and a significant increase in QUICKI (+0.02 ± 0.03 vs -0.002 ± 0.02, p = 0.003) compared with placebo. In addition, a significant reduction in serum LDL-cholesterol (-0.23 ± 0.79 vs +0.26 ± 0.74 mmol/l, p = 0.02) and total cholesterol: HDL-cholesterol ratio (-0.49 ± 1.09 vs +0.18 ± 0.37, p = 0.003) and a significant elevation in HDL-cholesterol levels (+0.15 ± 0.25 vs -0.02 ± 0.24 mmol/l, p = 0.01) was seen after intervention in the calcium-vitamin D group compared with placebo. In addition, calcium plus vitamin D supplementation resulted in a significant increase in GSH (+51.14 ± 131.64 vs -47.27 ± 203.63 μmol/l, p = 0.03) and prevented a rise in MDA levels (+0.06 ± 0.66 vs +0.93 ± 2.00 μmol/l, p = 0.03) compared with placebo. Conclusions/interpretation: Calcium plus vitamin D supplementation in women with GDM had beneficial effects on their metabolic profile. Trial registration: www.irct.ir IRCT201311205623N11 Funding: The study was supported by a grant (no. 92110) from Kashan University of Medical Sciences. © 2014 Springer-Verlag Berlin Heidelberg.

Item Type: Article
Additional Information: cited By 28
Uncontrolled Keywords: C reactive protein; calcium; cholesterol; colecalciferol; glucose; glutathione; high density lipoprotein cholesterol; insulin; low density lipoprotein cholesterol; malonaldehyde; placebo; triacylglycerol; calcium; glucose blood level; vitamin D; calcium; colecalciferol, adult; article; body weight; calcium blood level; cholesterol blood level; comparative study; controlled study; diet restriction; enzyme blood level; female; gestational age; glucose blood level; glycemic control; human; inflammation; insulin blood level; major clinical study; oxidative stress; pregnancy diabetes mellitus; pregnant woman; priority journal; protein blood level; Quantitative Insulin Sensitivity Check Index; randomized controlled trial; triacylglycerol blood level; vitamin supplementation; adolescent; blood; Diabetes, Gestational; diet supplementation; drug effects; inflammation; metabolism; oxidative stress; pregnancy; young adult; Article; clinical assessment; dietary intake; drug effect; glucose metabolism; oral glucose tolerance test, Adolescent; Adult; Blood Glucose; Calcium; Diabetes, Gestational; Dietary Supplements; Female; Humans; Inflammation; Oxidative Stress; Pregnancy; Vitamin D; Young Adult
Subjects: Nutrition
Divisions: Faculty of Medicine > Basic Sciences > Department of Nutrition
Depositing User: editor . 2
Date Deposited: 04 Mar 2017 06:37
Last Modified: 04 Mar 2017 06:37
URI: http://eprints.kaums.ac.ir/id/eprint/551

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