PMID- 16182445 OWN - NLM STAT- MEDLINE DCOM- 20060223 LR - 20131121 IS - 0304-3940 (Print) IS - 0304-3940 (Linking) VI - 392 IP - 1-2 DP - 2006 Jan 9 TI - Anti-emetic activity of ghrelin in ferrets exposed to the cytotoxic anti-cancer agent cisplatin. PG - 79-83 AB - Emesis may be modulated via multiple mechanisms. The actions of ghrelin suggest an ability to couple an induction of hunger with preparation of the stomach for ingestion of food. Such a process might reduce any tendency to vomit, so an anti-emetic activity of ghrelin was investigated in the ferret cisplatin-induced emesis model. In controls, intra-peritoneal cisplatin (10 mg/kg) induced 41.4+/-8.4 episodes of emesis comprising 310.4+/-55.3 retches and 28.8+/-6.9 vomits during the 6h observation; the latency to onset of the first emetic episode was 108.9+/-4.8 min. Intra-peritoneal ghrelin (1mg/kg, split as a 30 min pre- and 30 min-post dose) did not induce a change in behaviour or modify cisplatin-induced emesis (p>0.05). Intracerebroventricular (i.c.v.) administration (third ventricle) was achieved via a pre-implanted cannula. At the first emetic episode following cisplatin, ghrelin or vehicle (20 microl saline) was administered i.c.v. During the 30 min following the initial episode of emesis, control animals exhibited 18.0+/-2.6 emetic episodes comprising 160.3+/-24.1 retches and 13.8+/-2.7 vomits. Ghrelin 10 microg i.c.v. reduced the number of retches by 61.5% (p<0.05) and at a dose of 30 microg i.c.v. ghrelin reduced the number of episodes, individual retches and vomits by 74.4 (p<0.05), 80.4 (p<0.01), and 72.5% (p<0.05), respectively. At subsequent time periods there were no differences between ghrelin- or saline-treated animals (p>0.05). An ability of ghrelin to reduce emesis is consistent with a role in modulating gastro-intestinal functions and identifies a novel approach to the treatment of emesis. FAU - Rudd, John A AU - Rudd JA AD - Department of Pharmacology, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR, China. jar@cuhk.edu.hk FAU - Ngan, Man P AU - Ngan MP FAU - Wai, Man K AU - Wai MK FAU - King, Andrew G AU - King AG FAU - Witherington, Jason AU - Witherington J FAU - Andrews, Paul L R AU - Andrews PL FAU - Sanger, Gareth J AU - Sanger GJ LA - eng PT - Comparative Study PT - Journal Article DEP - 20050922 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Antiemetics) RN - 0 (Antineoplastic Agents) RN - 0 (Ghrelin) RN - 0 (Peptide Hormones) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Animals MH - Antiemetics/*therapeutic use MH - Antineoplastic Agents/*adverse effects MH - Behavior, Animal/drug effects MH - Cisplatin/*adverse effects MH - Disease Models, Animal MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Ferrets MH - Ghrelin MH - Male MH - Peptide Hormones/*therapeutic use MH - Reaction Time/drug effects MH - Statistics, Nonparametric MH - Time Factors MH - Vomiting/chemically induced/*prevention & control EDAT- 2005/09/27 09:00 MHDA- 2006/02/24 09:00 CRDT- 2005/09/27 09:00 PHST- 2005/07/15 00:00 [received] PHST- 2005/08/19 00:00 [revised] PHST- 2005/08/31 00:00 [accepted] PHST- 2005/09/27 09:00 [pubmed] PHST- 2006/02/24 09:00 [medline] PHST- 2005/09/27 09:00 [entrez] AID - S0304-3940(05)01037-2 [pii] AID - 10.1016/j.neulet.2005.08.062 [doi] PST - ppublish SO - Neurosci Lett. 2006 Jan 9;392(1-2):79-83. doi: 10.1016/j.neulet.2005.08.062. Epub 2005 Sep 22.