Meta-chlorophenylpiperazine induced changes in locomotor activity are mediated by 5-HT1 as well as 5-HT2C receptors in mice

European Journal of Pharmacology
S D Gleason, H E Shannon

Abstract

1-(Meta-chloro)phenylpiperazine (m-CPP) is a 5-HT receptor agonist which has been purported to be relatively selective for the 5-HT2C receptor. In particular, the hypolocomotion produced by m-CPP has been suggested to be mediated by 5-HT2C receptors. m-CPP binds with high affinity to 5-HT1 as well as 5-HT2 receptors, thus effects of m-CPP on locomotor activity may be due to the physiologic summation of the actions of m-CPP at 5-HT1 as well as 5-HT2 receptors. The present study investigated the effects of m-CPP alone and in the presence of the 5-HT2 receptor antagonist 6-methyl-1-(-methyethyl)-ergoline-8beta-carboxylic acid 2-hydroxy-1-methylpropyl ester maleate (LY53857), the 5-HT1A receptor antagonist N-[2-[4-(2-methoxyphenyl)-1-piperazinyl]-ethyl]-N-(2pyridinyl)c yclohexanecarboxamide trihydrochloride (WAY 100,635), and the 5-HT(1B/1D) receptor antagonist 2'-methyl-4'-(5-methyl-[1,2,4]oxadiazol-3-yl)-biphenyl-4-corbox ylic acid [4-methoxy-3-(4-methyl-piperazin-1-yl)-phenyl]amide (GR 127935) on locomotor activity. Administration of m-CPP alone (0.3-10 mg/kg) produced a dose-related decrease in locomotor activity. The 5-HT(1B/1D) receptor antagonist GR 127935 (3.0 mg/kg) in combination with m-CPP produced a slight leftward shif...Continue Reading

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Citations

Feb 13, 2001·Acta Physiologica Scandinavica·D Dwyer, J Browning
Jul 16, 2008·Physiology & Behavior·Christopher A CoyleDeborah J Good
Sep 20, 2008·American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics : the Official Publication of the International Society of Psychiatric Genetics·Antonio Drago, Alessandro Serretti
Jul 5, 2005·Expert Opinion on Investigational Drugs·F JenckJ L Moreau
Mar 19, 2014·Neuroscience and Biobehavioral Reviews·Cedric B P MartinRaymond Mongeau

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