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Published in: European Journal of Nutrition 1/2021

01-02-2021 | Insulins | Original Contribution

Renoprotective effects of vitamin D3 supplementation in a rat model of metabolic syndrome

Authors: Nehal S. Wahba, Salah A. Ghareib, Rasha H. Abdel-Ghany, Mohamed Abdel-Aal, Amira E. Alsemeh

Published in: European Journal of Nutrition | Issue 1/2021

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Abstract

Purpose

The study aimed to investigate the potential nephroprotective effects of vitamin D3 in metabolic syndrome (MetS) and the molecular basis of the underlying mechanisms of its action.

Methods

MetS was induced in adult male Wistar rat‏s by adding fructose (10%) to every day drinking water and salt (3%) to the diet. Six weeks after fructose/salt consumption, fasting serum lipid profile and uric acid levels were determined, an oral glucose tolerance test (OGTT) was performed and kidney function was checked. MetS rats were then treated orally with vitamin D3 (10 µg/kg/day) for 6 weeks. At the end of the study period (12 weeks), the OGTT test was reperformed, anthropometrical parameters were measured, urine, blood and tissue samples were collected and the animals were euthanised.

Results

The incidence of MetS was confirmed 6 weeks after fructose/salt consumption, when the rats exhibited significant weight gain, dyslipidemia, hyperuricemia, insulin resistance, hyperinsulinemia and impaired glucose tolerance. After 12 weeks, MetS rats displayed markedly declined renal function alongside with extravagant renal histopathological damages and interstitial fibrosis. Furthermore, significantly enhanced renal oxidative stress and inflammation were manifested. Vitamin D3 supplementation in MetS rats significantly reversed all the above-mentioned deleterious effects.

Conclusion

The study has indeed provided mounting evidence of the promising therapeutic potential of vitamin D3 against development and progression of MetS-induced nephropathy. A new insight has been introduced into the crucial role of dipeptidyl peptidase-4 inhibition and sirtuin-1/5′adenosine monophosphate-activated protein kinase activation in the renoprotective effects of vitamin D3.
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Metadata
Title
Renoprotective effects of vitamin D3 supplementation in a rat model of metabolic syndrome
Authors
Nehal S. Wahba
Salah A. Ghareib
Rasha H. Abdel-Ghany
Mohamed Abdel-Aal
Amira E. Alsemeh
Publication date
01-02-2021
Publisher
Springer Berlin Heidelberg
Keywords
Insulins
Insulins
Published in
European Journal of Nutrition / Issue 1/2021
Print ISSN: 1436-6207
Electronic ISSN: 1436-6215
DOI
https://doi.org/10.1007/s00394-020-02249-6

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