Abstract
Hyponidd is a herbomineral formulation composed of the extracts of ten medicinal plants ( Momordica charantia, Melia azadirachta, Pterocarpus marsupium, Tinospora cordifolia , Gymnema sylvestre, Enicostemma littorale, Emblica officinalis, Eugenia jambolana, Cassia auriculata and Curcuma longa). We have investigated hyponidd for its possible antihyperglycaemic and antioxidant effect in diabetic rats. Rats were rendered diabetic by streptozotocin (STZ) (45 mg kg(-1) body weight). Oral administration of hyponidd (100 mg kg(-1) and 200 mg kg(-1)) for 45 days resulted in significant lowered levels of blood glucose and significant increased levels of hepatic glycogen and total haemoglobin. An oral glucose tolerance test was also performed in experimental diabetic rats in which there was a significant improvement in blood glucose tolerance in the rats treated with hyponidd. Hyponidd administration also decreased levels of glycosylated haemoglobin, plasma thiobarbituric acid reactive substances, hydroperoxides, ceruloplasmin and alpha-tocopherol in diabetic rats. Plasma reduced glutathione and vitamin C were significantly elevated by oral administration of hyponidd. The effect of hyponidd at a dose of 200 mg kg(-1) was more effective than glibenclamide (600 microg kg(-1)) in restoring the values to near normal. The results showed that hyponidd exhibits antihyperglycaemic and antioxidant activity in STZ-induced diabetic rats.
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