Publications of Faculty of Medicine:EFFECT OF KORIAN GINSENG EXTRACT ON SOME BEHAVIOURAL ASPECTS IN STREPTOZOCIN INDUCED DIABETIC RATS AND ITS INTERACTION WITH AN ORAL HYPOGLYCEMIC AGENT( GLkCLAZIDE) : Abstract

In this work, induction of diabetes in rats by single intraperitoneal injection of streptozocin (35 mg/kg b.w.) resulted in deterioration of motor coordination evidenced by shortening of time of keeping posture in rolling -drum and learning behaviour evidenced by Significiint,. increase in latency period requied for development of a conditioned reflex with no affection of extension time. Glaclazide alone significantly improved motor coordination with no effect on learning behaviour. This was associated with parial improvement of carbohydrate metabolism in the form of disappearance of ketonuria. Coadministration of ginseng either in low (25 mg/kg b.w.) or high (100 mg/kg b .w.) doses normalized both motor and learning behaviour in diabetic rats. The latter effect was not related to any change in the studied neurotrasmitter5( norepinephrine or acetyl choline) concentrations. Glucose level is not significantly affected by g14c1azide and ginseng combination in spite of the significant potentiation of glucose stimulated insulin release. This may imply that the benificial effect on motor behaviour may be related to insulin induced improvement in intraceullar utilization of glucose but its magnitude was not sufficient to normalize blood glucose level.