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Behavioural responses to tachykinins were observed following intracisternal administration in mice. The synthetic NK-3 agonists senktide and L-363,851 caused behaviour typically associated with serotonergic stimulation, including head twitches, reciprocal forepaw treading and hindlimb splaying. Neurokinin B produced some features of the serotonin (5-HT) syndrome, while substance P, neurokinin A and eledoisin failed to elicit any such behaviours. Senktide-induced head twitches were prevented by pretreatment with the 5-HT2 antagonists ketanserin and ritanserin, while forepaw treading was attenuated by the 5-HT1 antagonists (-)-pindolol and methysergide. These data suggest that NK-3 agonists interact with central 5-HT mechanisms.

Type

Journal article

Journal

Neurosci Lett

Publication Date

05/10/1987

Volume

80

Pages

321 - 326

Keywords

Animals, Eledoisin, Female, Mice, Neurokinin B, Neuropeptides, Oligopeptides, Peptide Fragments, Receptors, Neurotransmitter, Receptors, Tachykinin, Serotonin, Serotonin Antagonists, Stereotyped Behavior, Substance P