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Vitamin D downregulates key genes of diabetes complications in cardiomyocyte

Hoda Derakhshanian1,2, Abolghassem Djazayery3, Mohammad Hassan Javanbakht4

  • 1Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran.

Journal of Cellular Physiology
|June 8, 2019
PubMed
Abstract

Insights

Vitamin D treatment improved hyperglycemia and hypoinsulinemia in diabetic rats. It also reduced key gene expression linked to diabetic cardiomyopathy, suggesting a protective role.

Area of Science:

  • Endocrinology
  • Cardiovascular Research
  • Molecular Biology

Background:

  • Vitamin D deficiency is linked to diabetes incidence and complications.
  • Diabetic cardiomyopathy is a significant concern in diabetes management.

Purpose of the Study:

  • To investigate the effect of vitamin D on gene expression in diabetic cardiomyopathy.
  • To assess vitamin D's impact on pathways involved in diabetes complications.

Main Methods:

  • Streptozotocin-induced diabetes in Sprague-Dawley rats.
  • Treatment with vitamin D or placebo for 4 weeks.
  • Assessed serum markers, gene expression (RAGE, OGT, GFAT), and NF-kB activity.

Main Results:

  • Vitamin D improved hyperglycemia and hypoinsulinemia.
  • Reduced expression of RAGE, OGT, and GFAT genes was observed.
  • Decreased nuclear factor-kB (NF-kB) activity in cardiac myocytes.

Conclusions:

  • Vitamin D may reduce diabetic cardiomyopathy by improving glycemic control.
  • Downregulation of AGE and hexosamine pathways contributes to the protective effect.
  • Reduced NF-kB activity in heart tissue is a key mechanism.
Keywords:
O-GlcNAc transferaseadvanced glycation end productsdiabetes complicationsdiabetic cardiomyopathiesglutamine-fructose-6-phosphate transaminasevitamin D

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