Journal
FREE RADICAL RESEARCH
Volume 44, Issue 6, Pages 668-678Publisher
TAYLOR & FRANCIS LTD
DOI: 10.3109/10715761003733901
Keywords
D-pinitol; diabetes mellitus; streptozotocin; lipid peroxidation; oxidative stress; pro-inflammatory cytokines
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Funding
- University Grant Commission (UGC), New Delhi, India
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The present study was aimed to investigate the effect of D-pinitol on hyperglycaemia mediated oxidative stress by analysing the hepatic antioxidant competence, pro-inflammatory cytokines and ultrastructural changes in liver tissues of streptozotocin- induced diabetic rats. Oral administration of D-pinitol (50 mg/kg b.w.) resulted in significant (p < 0.05) attenuation in blood glucose, glycosylated haemoglobin and pro-inflammatory markers such as TNF-alpha, IL-1 beta, IL-6, NF-kappa B p65 unit and NO and significant (p < 0.05) elevation in the plasma insulin level. In addition, D-pinitol instigated a significant escalation in the levels of hepatic tissue non-enzymatic antioxidants and the activities enzymatic antioxidants of diabetic rats with significant (p < 0.05) decrease in lipid peroxides and hydroperoxides formation, thus demonstrating the protective role of D-pinitol on the hepatic tissues from oxidative stress-induced liver damage. These biochemical observations were complemented by histological and ultrastructural examination of liver section. Thus, the present study demonstrates the hepatoprotective nature of D-pinitol by attenuating hyperglycaemia-mediated pro-inflammatory cytokines and oxidative stress.
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