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  • Title: Prolonged treatment with beta-adrenoceptor antagonists counteracts the aggression deficit induced by chronic stress.
    Author: Zebrowska-Lupina I, Ossowska G, Lupina T, Klenk-Majewska B.
    Journal: Pol J Pharmacol; 1997; 49(5):283-9. PubMed ID: 9566026.
    Abstract:
    Chronic stress-induced behavioral disturbances have been used as experimental models of depression. One of them is the deficit of fighting behavior induced by 16-day application of various unpredictable stressors. In the present study we investigated the effect of beta-adrenoceptor antagonists (propranolol, pindolol, nadolol and acebutolol) on electric footshock-induced fighting behavior in chronically stressed (14 various stressors over 16 days) male Wistar rats. It was found that the number of fighting attacks was reduced by about 50-80% in the rats submitted to chronic stress. Prolonged, 14-day, but not acute, treatment with propranolol, pindolol or nadolol (but not acebutolol) counteracted the deficit of aggression induced by chronic stress. It is suggested that beta-adrenoceptor antagonists which penetrate the blood-brain barrier may prevent the behavioral changes induced by chronic stress.
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