PMID- 26162700 OWN - NLM STAT- MEDLINE DCOM- 20160728 LR - 20200711 IS - 1879-0712 (Electronic) IS - 0014-2999 (Linking) VI - 764 DP - 2015 Oct 5 TI - Central injection of CDP-choline suppresses serum ghrelin levels while increasing serum leptin levels in rats. PG - 264-270 LID - S0014-2999(15)30141-2 [pii] LID - 10.1016/j.ejphar.2015.07.014 [doi] AB - In this study we aimed to test central administration of CDP-choline on serum ghrelin, leptin, glucose and corticosterone levels in rats. Intracerebroventricular (i.c.v.) 0.5, 1.0 and 2.0 micromol CDP-choline and saline were administered to male Wistar-Albino rats. For the measurement of serum leptin and ghrelin levels, blood samples were obtained baseline and at 5, 15, 30, 60 and 120 min following i.c.v. CDP-choline injection. Equimolar doses of i.c.v. choline (1.0 micromol) and cytidine (1.0 micromol) were administered and measurements were repeated throughout the second round of the experiment. Atropine (10 microg) and mecamylamine (50 microg) were injected intracerebroventricularly prior to CDP-choline and measurements repeated in the third round of the experiment. After 1 micromol CDP-choline injection, serum ghrelin levels were suppressed significantly at 60 min (P=0.025), whereas serum leptin levels were increased at 60 and 120 min (P=0.012 and P=0.017 respectively). CDP-choline injections also induced a dose- and time-dependent increase in serum glucose and corticosterone levels. The effect of choline on serum leptin and ghrelin levels was similar with CDP-choline while no effect was seen with cytidine. Suppression of serum ghrelin levels was eliminated through mecamylamine pretreatment while a rise in leptin was prevented by both atropine and mecamylamine pretreatments. In conclusion; centrally injected CDP-choline suppressed serum ghrelin levels while increasing serum leptin levels. The observed effects following receptor antagonist treatment suggest that nicotinic receptors play a role in suppression of serum ghrelin levels,whereas nicotinic and muscarinic receptors both play a part in the increase of serum leptin levels. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Kiyici, Sinem AU - Kiyici S AD - Uludag University Medical Faculty, Department of Pharmacology, Bursa, Turkey. Electronic address: drsinemkiyici@gmail.com. FAU - Basaran, Nesrin Filiz AU - Basaran NF AD - Uludag University Medical Faculty, Department of Pharmacology, Bursa, Turkey. Electronic address: nesfiliz@gmail.com. FAU - Cavun, Sinan AU - Cavun S AD - Uludag University Medical Faculty, Department of Pharmacology, Bursa, Turkey. Electronic address: scavun@gmail.com. FAU - Savci, Vahide AU - Savci V AD - Uludag University Medical Faculty, Department of Pharmacology, Bursa, Turkey. Electronic address: vsavci@uludag.edu.tr. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150707 PL - Netherlands TA - Eur J Pharmacol JT - European journal of pharmacology JID - 1254354 RN - 0 (Blood Glucose) RN - 0 (Ghrelin) RN - 0 (Leptin) RN - 0 (Muscarinic Antagonists) RN - 0 (Nicotinic Antagonists) RN - 0 (Receptors, Muscarinic) RN - 0 (Receptors, Nicotinic) RN - 536BQ2JVC7 (Cytidine Diphosphate Choline) RN - 6EE945D3OK (Mecamylamine) RN - 7C0697DR9I (Atropine) RN - W980KJ009P (Corticosterone) SB - IM MH - Animals MH - Atropine/pharmacology MH - Blood Glucose/analysis MH - Corticosterone/blood MH - Cytidine Diphosphate Choline/*pharmacology MH - Ghrelin/*blood MH - Injections MH - Leptin/*blood MH - Male MH - Mecamylamine/pharmacology MH - Muscarinic Antagonists/pharmacology MH - Nicotinic Antagonists/pharmacology MH - Rats, Wistar MH - Receptors, Muscarinic/metabolism MH - Receptors, Nicotinic/metabolism OTO - NOTNLM OT - CDP-choline OT - Ghrelin OT - Leptin EDAT- 2015/07/15 06:00 MHDA- 2016/07/29 06:00 CRDT- 2015/07/12 06:00 PHST- 2015/06/05 00:00 [received] PHST- 2015/07/03 00:00 [revised] PHST- 2015/07/06 00:00 [accepted] PHST- 2015/07/12 06:00 [entrez] PHST- 2015/07/15 06:00 [pubmed] PHST- 2016/07/29 06:00 [medline] AID - S0014-2999(15)30141-2 [pii] AID - 10.1016/j.ejphar.2015.07.014 [doi] PST - ppublish SO - Eur J Pharmacol. 2015 Oct 5;764:264-270. doi: 10.1016/j.ejphar.2015.07.014. Epub 2015 Jul 7.