Abstract
Limited data are available assessing the effects of vitamin D and evening primrose oil (EPO) administration on markers of insulin resistance and lipid concentrations in gestational diabetes mellitus (GDM). This study was designed to evaluate the effects of vitamin D and EPO administration on insulin resistance and lipid concentrations among women with GDM. In this prospective randomized, double-blind, placebo-controlled clinical trial, 60 participants with GDM were divided into 2 groups of either 1000 IU vitamin D3 and 1000 mg EPO or placebo for 6 weeks. At the beginning and end of the study, fasting blood samples were obtained from the participants to measure related variables. After 6 weeks of intervention, changes in fasting plasma glucose (−3.6 ± 7.5 vs. +1.5 ± 11.4 mg/dL, P = 0.04), serum insulin concentrations (−2.0 ± 5.3 vs. +4.6 ± 10.7 µIU/mL, P = 0.004), homeostasis model of assessment (HOMA) insulin resistance (−0.5 ± 1.1 vs. +1.1 ± 2.5, P = 0.003), HOMA-B cell function (−7.7 ± 23.3 vs. +17.4 ± 42.9, P = 0.007) and the quantitative insulin sensitivity check index (+0.01 ± 0.02 vs. −0.01 ± 0.02, P = 0.007) in the vitamin D plus EPO group were significantly different from the placebo group. In addition, compared with the placebo, vitamin D and EPO supplementation resulted in significant reductions in serum TAG (−20.0 ± 54.3 vs. +34.3 ± 38.2 mg/dL, P < 0.001), VLDL (−4.0 ± 10.9 vs. +6.9 ± 7.6 mg/dL, P < 0.001), TC (−22.1 ± 32.6 vs. +5.3 ± 20.1 mg/dL, P < 0.001), LDL concentrations (−18.0 ± 25.5 vs. +1.8 ± 15.7 mg/dL, P = 0.001) and TC/HDL (−0.3 ± 0.4 vs. +0.3 ± 0.5 mg/dL, P < 0.001). We did not observe any significant effect of vitamin D and EPO supplementation on serum HDL concentrations.
Clinical trial registration number: http://www.irct.ir: IRCT201509115623N52.
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Abbreviations
- CVD:
-
Cardiovascular disease
- EPO:
-
Evening primrose oil
- EFAs:
-
Essential fatty acids
- FPG:
-
Fasting plasma glucose
- GDM:
-
Gestational diabetes mellitus
- GLA:
-
Gamma-linolenic acid
- HOMA-IR:
-
Homeostasis model of assessment-estimated insulin resistance
- HOMA-B:
-
Homeostasis model of assessment-estimated B cell function
- HDL:
-
High-density lipoprotein
- LDL:
-
Low-density lipoprotein
- MUFA:
-
Monounsaturated fatty acid
- PUFA:
-
Polyunsaturated fatty acid
- QUICKI:
-
Quantitative insulin sensitivity check index
- SFA:
-
Saturated fatty acid
- TAG:
-
Triacylglycerol
- TC:
-
Total cholesterol
- VLDL:
-
Very low-density lipoprotein
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Acknowledgments
The present study was founded by a grant from the Vice Chancellor for Research, AUMS, Kashan, Iran.
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Jamilian, M., Karamali, M., Taghizadeh, M. et al. Vitamin D and Evening Primrose Oil Administration Improve Glycemia and Lipid Profiles in Women with Gestational Diabetes. Lipids 51, 349–356 (2016). https://doi.org/10.1007/s11745-016-4123-3
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DOI: https://doi.org/10.1007/s11745-016-4123-3