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  • Title: The effects of serotonin antagonists in a behavioral despair procedure in mice.
    Author: Luttinger D, Freedman M, Hamel L, Ward SJ, Perrone M.
    Journal: Eur J Pharmacol; 1984 Dec 15; 107(1):53-8. PubMed ID: 6526071.
    Abstract:
    Six serotonin antagonists (pizotifen, mianserin, cyproheptadine, ketanserin, trazodone and methysergide) were tested in mice in a behavioral despair procedure. The behavioral despair procedure detects most antidepressant compounds. Pizotifen, mianserin and cyproheptadine were found to be active and the others were inactive. The serotonin binding potency at serotonin1 or serotonin2 receptors, or the ratio of potency at these receptors did not correlate with activity in the behavioral despair procedure. However, the serotonin antagonists that were active in the behavioral despair procedure were all found to be potent antagonists at histamine1 receptors. It is suggested that the activity of some serotonin antagonists in the behavioral despair procedure is best explained by their antihistaminergic potency.
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