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  • Title: [Effect of beta-endorphin on catecholamine levels in the rat hypothalamus and cerebral cortex].
    Author: Slavnov VN, Valueva GV, Markov VV, Luchitskiĭ EV.
    Journal: Biull Eksp Biol Med; 1986 May; 101(5):562-4. PubMed ID: 2939890.
    Abstract:
    The present paper deals with the effect of beta-endorphin on catecholamine content in the hypothalamus and cerebral cortex of male rats. beta-endorphin was found to decrease catecholamine content in the rat brain, with the degree of reduction depending on the brain topography and the time following the peptide administration. 5 min later no changes in catecholamine content were observed either in the hypothalamus or in the cerebral cortex. 20 min later beta-endorphin induced a statistically significant fall of catecholamine concentration in the hypothalamus. A tendency towards its decrease was also observed in the cerebral cortex. 60 min later beta-endorphin produced an insignificant decrease in catecholamine level in both brain areas under study. It may be therefore suggested that beta-endorphin-induced decrease of catecholamine content in the hypothalamus and cerebral cortex represents one of the mechanisms underlying beta-endorphin stimulating action on a number of trophic functions of the hypophysis.
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