Introduction: The human society has become complex. However, our physiological responses designed to cope with the ever-increasing adverse situations have not evolved appreciably during the past thousand years. The failure of successful adaptation during stressful situations has resulted in stress-related illnesses. Methods: The objective of the present study was to carry out a comparative assessment of anti-stress effect of Vitis vinifera and Withania somnifera using unpredictable chronic mild stress model in rats. Long-term exposure to multiple stressors can cause depression. The unpredictable chronic administration of various mild stresses, a procedure known as “unpredictable chronic mild stress”, is one of the best-validated rodent models to study stress in animals, for its good etiological and predictive validity. Result: Diazepam, Withania somnifera, Vitis vinifera administration dose dependently reversed the increase in immobility period in stressed rats. In the study of locomotion activity of rats in elevated plus maze apparatus, Stress treated control group rats showed less no of entries in open arm and also less time spent in open arm. Vitis vinifera treated (p<0.0001), Withania somnifera treated (p<0.0001) and Diazepam treated group showed (p<0.0001) no. of entries in open arms which were more than control group and stressed groups. Stressed group produce less average time spent in open arm as compared to treatment groups as Withania somnifera (p<0.05), Vitis vinifera and diazepam. Withania somnifera group showed significant antistress locomotry behaviour in rats. Administration of Vitis vinifera, Withania somnifera and diazepam during stress period restored the ambulatory behaviour of the rats which can be correlated with restoration of plasma corticosterone level. Finally, the results of the present study justified that Withania somnifera, Vitis vinifera and diazepam exhibited significant antistress activity in rats.
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