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The Japanese Journal of Pharmacology
Vol. 86 (2001) No. 3 P 359-362

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http://doi.org/10.1254/jjp.86.359

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The effects of a novel tachykinin NK1-receptor antagonist HSP-117 {(2S,3S)-3-[(5-isopropyl-2,3-dihydrobenzofuran-7-yl)methyl]amino-2-phenylpiperidine dihydrochloride} on cisplatin-induced pica, i.e., the eating of nonnutritive substances such as kaolin were examined in rats. HSP-117 inhibited kaolin intake in a dose-dependent manner for 2 days. The 5-HT3-receptor antagonist ondansetron inhibited only on the first day, but not on the second day. These results indicate that the cisplatin-induced kaolin intake on the first day is related to both 5-HT3- and NK1 receptors, while only the NK1 receptor is involved on the second day. Thus, cisplatin-induced continuous pica in rats represents a useful model of not only acute but also delayed emesis.

Copyright © The Japanese Pharmacological Society 2001

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