Dietary supplementation with magnesium citrate may improve pancreatic metabolic indices in an alloxan-induced diabetes rat model


  • Olena Shatynska Ternopil National Medical University, Department of Medical Biochemistry, Maidan Voli 1, 46001, Ternopil, Ukraine, Tel: +380973423525
  • Oleksandr Tokarskyy Ternopil National Medical University, Department of Medical Biochemistry, Maidan Voli 1, 46001, Ternopil, Ukraine, Tel: +380964102536
  • Petro Lykhatskyi Ternopil National Medical University, Department of Medical Biochemistry, Maidan Voli 1, 46001, Ternopil, Ukraine, Tel: +380974433614
  • Olha Yaremchuk Ternopil National Medical University, Department of Medical Biochemistry, Maidan Voli 1, 46001, Ternopil, Ukraine, Tel: +380961398994
  • Iryna Bandas Ternopil National Medical University, Department of Medical Biochemistry, Maidan Voli 1, 46001, Ternopil, Ukraine, Tel: +380977982333
  • Andrii Mashtalir Ternopil National Medical University, Department of Higher Education Pedagogy and Social Sciences, Doroshenko Street 7, 46001, Ternopil, Ukraine, Tel: +380671482843



alloxan, diabetes, rat model, magnesium oral supplementation, pancreas


The purpose of the current study was to evaluate the protective properties of dietary magnesium supplementation on pancreatic tissue of rats with alloxan-induced diabetes mellitus. Twenty-five male Wistar rats were split into five groups (control, diabetes, diabetes with 100 mg Mg daily, diabetes with 250 mg Mg daily, diabetes with 500 mg Mg daily) with feeding supplementation starting on day 1, diabetes induction on day 21, and animal sacrifice on day 30. Fasting glucose in blood serum was measured on days 21, 25, 27, and day 30. Glucose metabolism enzymes, namely, lactate dehydrogenase and glucose-6-phosphate dehydrogenase, were measured in pancreatic tissue upon the sacrifice, as well as lipid peroxidation, antioxidant system protective enzymes (catalase and superoxide dismutase), and glutathione system components (glutathione reductase, glutathione peroxidase, and glutathione reduced). Pearson correlation coefficients showed strong negative correlation between serum glucose (control and diabetic animals) and glucose metabolism enzymes, catalase, superoxide dismutase, glutathione peroxidase in pancreatic tissue (r >-0.9, p <0.05), moderate negative correlation with reduced glutathione (r = -0.79, p <0.05), moderate positive correlation with lipid peroxidation index
(r = +0.67, p <0.05), weak correlation with glutathione reductase (r = -0.57, p <0.05). Magnesium supplementation slowed down diabetes onset considering fasting glucose levels in rats (p <0.05), as well as partially restored investigated dehydrogenase levels in the pancreas of rats comparing to diabetes group (p <0.05). The lipid peroxidation index varied between treatments showing the dose-dependent influence of Mg2+. Magnesium supplementation partially restored catalase and superoxide dismutase activities in pancreatic tissue, as well as glutathione peroxidase and reduced glutathione levels (p <0.05), while glutathione reductase levels remained unaffected (p >0.05). The obtained results suggested a model, where magnesium ions may have a possible protective effect on pancreatic tissue against the negative influence of alloxan inside β cells of the pancreas.


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How to Cite

Shatynska, O. ., Tokarskyy, O., Lykhatskyi, P., Yaremchuk, O., Bandas, I., & Mashtalir, A. (2020). Dietary supplementation with magnesium citrate may improve pancreatic metabolic indices in an alloxan-induced diabetes rat model. Potravinarstvo Slovak Journal of Food Sciences, 14, 836–846.