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Attenuation of diabetic nephropathy by dietary fenugreek (Trigonella foenum-graecum) seeds and onion (Allium cepa) via suppression of glucose transporters and renin-angiotensin system.

Pradeep, S. R. and Susmita, Barman and Srinivasan, K. (2019) Attenuation of diabetic nephropathy by dietary fenugreek (Trigonella foenum-graecum) seeds and onion (Allium cepa) via suppression of glucose transporters and renin-angiotensin system. Nutrition, 67-68. pp. 1-13.

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Abstract

Objectives The aim of this study was to determine the effects of dietary fenugreek (Trigonella foenum-graecum) seeds and onion on the hyperglycemia-stimulated glucose transporters and activation of renin–angiotensin system-mediated cascade of events leading to renal lesions in diabetic animals. Methods The mechanistic aspects of nephroprotective influence of dietary fenugreek seeds (10%) and onion (3%) on diabetic renal lesions was investigated in streptozotocin diabetic rats. Renal damage was assessed by measuring proteinuria, enzymuria, expression of glucose transporters, renin–angiotensin system, and activities of polyol pathway enzymes. Results Diabetes resulted in an upregulation of glucose transporters in kidney tissue, which was countered by these dietary interventions. The upregulation of renal angiotensin-converting enzyme and its receptor was also countered by these dietary interventions. Dietary fenugreek and onion significantly reduced metabolites of polyol pathway, nitric oxide, and N-acetyl-β-d-glucosaminidase activity. Markers of podocyte damage in kidney (nephrin, podocin, and podocalyxin) and their urinary excretion were normalized along with downregulation of the expression of kidney injury molecule-1 by these dietary interventions. Dietary fenugreek and onion effectively countered the diabetes-induced structural abnormalities of renal tissue. Conclusion Feeding fiber-rich fenugreek seeds and sulfur compounds-rich onion produced a blockade in glucose translocation and renin–angiotensin system in the early stage of diabetic nephropathy. This involved a downregulation of the expression of polyol pathway enzymes, partial restoration of the podocyte damage, revival of renal architecture and functional abnormality. The present study also suggested that these two dietary interventions offer a higher renoprotective influence when consumed together.

Item Type: Article
Uncontrolled Keywords: Diabetic nephropathy Podocyte damage Glucose transporters Renin–angiotensin system Leaching of renal enzymes Fenugreek seeds
Subjects: 600 Technology > 01 Medical sciences > 04 Diabetes Mellitus
600 Technology > 08 Food technology > 30 Spices/Condiments > 08 Fenugreek
Divisions: Dept. of Biochemistry
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 15 Jun 2020 08:17
Last Modified: 15 Jun 2020 08:17
URI: http://ir.cftri.com/id/eprint/14394

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