Antioxidant role of mulberry (Morus indica L. cv. Anantha) leaves in streptozotocin-diabetic rats.

Autor: Andallu B; Department of Home Science, Sri Sathya Sai Institute of Higher Learning, Anantapur-515001, India. andullusss@rediffmail.com, Varadacharyulu NCh
Jazyk: angličtina
Zdroj: Clinica chimica acta; international journal of clinical chemistry [Clin Chim Acta] 2003 Dec; Vol. 338 (1-2), pp. 3-10.
DOI: 10.1016/s0009-8981(03)00322-x
Abstrakt: Background: The antihyperglycemic and antioxidant role of mulberry (Morus indica L.) leaves were investigated.
Methods: Streptozotocin (STZ)-induced diabetic male Wistar rats were used as experimental models; one group was given 25% dry mulberry leaf powder mixed with the standard diet and another group was given standard diet for a period of 8 weeks. The antihyperglycemic and antioxidant role of mulberry was assessed by determining its effect on blood glucose, lipid peroxidation, reduced glutathione (GSH) concentrations and on the activity of glucose-6-phosphate dehydrogenase (G6PDH) and various antioxidant enzymes in erythrocytes and compared with that of controls.
Results: Mulberry-treated diabetic rats showed a significant decrease in fasting blood glucose concentrations indicating a good glycemic control. Increased lipid peroxidation and the activity of catalase (CAT) in erythrocytes observed in diabetic controls were significantly decreased by mulberry leaves (48% and 33%, respectively). Decreased GSH concentrations and the activity of glucose-6-phosphate dehydrogenase and antioxidant enzymes viz., glutathione peroxidase (GPx), glutathione reductase (GR), glutathione-S-transferase (GST) and superoxide dismutase (SOD) observed in uncontrolled diabetes were improved (52%, 69%, 151%, 95%, 24% and 106%) by mulberry treatment very efficiently.
Conclusion: Mulberry leaves possess antihyperglycemic and antioxidant properties.
Databáze: MEDLINE
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