Abstract
The effects of antidepressants [(+)-oxaprotiline, (−)-oxaprotiline, imipramine, maprotiline, and trazodone] and antihistamines (mepyramine, dimethindene, ketotifen, methapyrilene, and antazoline) on muricidal behaviour in olfactory bulbectomized rats were investigated. All drugs except for dimethindene, which only minimally passes across the blood-brain barrier, suppressed muricide. The drugs which have high affinity for histamine H1 receptor showed potent suppressive effect on muricide. It is suggested that the central histaminergic system is involved via H1 receptors in the expression of muricide in olfactory bulbectomized rats.
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