INFLUENCE OF LORNOXICAM ON HYPOGLYCEMIC POTENTIAL OF SOME ORAL HYPOGLYCEMIC AGENTS IN NORMAL AND DIABETIC RATS

Objective: The objective was to study drug-drug interaction between Lornoxicam and oral hypoglycemic agents in normal and Streptozotocin-induced diabetes in rats. Material and Method: The protocol was blueprinted in two phases. In the first segment, the influence of Glibenclamide (0.7mg/kg/p.o.) and Glipizide (1.05mg/kg/p.o.) once daily on blood glucose levels in normoglycemic rats were studied and then the influence of Lornoxicam (1.64 mg/kg/p.o. once daily) pre-treatment on the hypoglycemic activity studied. Along with, the influence of Lornoxicam treatment for seven consecutive days (per se effect) on blood glucose levels was also studied in normoglycemic rats. In the second phase of the study, Streptozotocin-induced diabetic rats were used to assess the influence of Lornoxicam pre-treatment on Glibenclamide and Glipizide induced hypoglycemic effect in pathophysiological conditions. Blood samples were collected at accepted hiatus of 0.0, 0.5, 1.0, 2.0, 4.0, 8.0, 12.0, 18.0 and 24.0 h subsequent to drug treatment. All blood samples were evaluated for plasma glucose by the glucose oxidase peroxidase method (GOD/POD). Results: The findings suggested that Lornoxicam influences the hypoglycemic action of Glibenclamide and Glipizide at pharmacokinetic levels, both in normoglycemic and diabetic rats respectively. Conclusion: The findings indicate that the dose of oral hypoglycemic agents should be adjusted if there is a need for co-administration of Lornoxicam.