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Pakistan Journal of Biological Sciences
Year: 2013  |  Volume: 16  |  Issue: 19  |  Page No.: 1016 - 1021

Reduction of Metabolic Signs of Acute Stress in Male Mice by Papaver rhoaes Hydro-alcoholic Extract

M. Ranjbaran, P. Mirzaei, F. Lotfi, S. Behzadi and H. Sahraei    

Abstract: In the present study, effects of hydro-alcoholic extract of Papaver rhoeas L. (Papaveraceae) on the metabolic changes induced by electro foot shock stress in male NMRI mice (25-30 g) has been investigated. The mice were received electric foot shock (40 mV) for 100 sec. Plasma corticosterone levels, food and water intake and delay to eating (Anorexia) were assessed 20 min later. Different doses of the plant extract (15, 30 and 60 mg kg-1), or saline (10 mL kg-1) was injected to the animals intraperitoneally 30 min before the stress. The control groups received saline (10 mL kg-1) or the extract (15, 30 and 60 mg kg-1) and 30 min later were exposed to the apparatus but did not received stress. Our results indicated that stress can increase plasma corticosterone level significantly and the extract can exacerbate the stress effect. However, stress could reduce food and water intake and increase delay to eating times which were inhibited by the extract pretreatment. The results indicate that administration of the extract of Papaver rhoeas can reduce the side effects of stress but increases plasma corticosterone level which may be due to its effects on the adrenal gland.

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