PMID- 23051939 OWN - NLM STAT- MEDLINE DCOM- 20140501 LR - 20191210 IS - 1873-7862 (Electronic) IS - 0924-977X (Linking) VI - 23 IP - 9 DP - 2013 Sep TI - Behavioural and neurochemical comparison of chronic intermittent cathinone, mephedrone and MDMA administration to the rat. PG - 1085-95 LID - S0924-977X(12)00269-6 [pii] LID - 10.1016/j.euroneuro.2012.09.005 [doi] AB - The synthetic cathinone derivative, mephedrone, is a controlled substance across Europe. Its effects have been compared by users to 3,4-methylenedioxymethamphetamine (MDMA), but little data exist on its pharmacological properties. This study compared the behavioural and neurochemical effects of mephedrone with cathinone and MDMA in rats. Young-adult male Lister hooded rats received i.p. cathinone (1 or 4 mg/kg), mephedrone (1, 4 or 10mg/kg) or MDMA (10mg/kg) on two consecutive days weekly for 3 weeks or as a single acute injection (for neurochemical analysis). Locomotor activity (LMA), novel object discrimination (NOD), conditioned emotional response (CER) and prepulse inhibition of the acoustic startle response (PPI) were measured following intermittent drug administration. Dopamine, 5-hydroxytryptamine (5-HT) and their major metabolites were measured in striatum, frontal cortex and hippocampus by high performance liquid chromatography 7 days after intermittent dosing and 2h after acute injection. Cathinone (1, 4 mg/kg), mephedrone (10mg/kg) and MDMA (10mg/kg) induced hyperactivity following the first and sixth injections and sensitization to cathinone and mephedrone occurred with chronic dosing. All drugs impaired NOD and mephedrone (10mg/kg) reduced freezing in response to contextual re-exposure during the CER retention trial. Acute MDMA reduced hippocampal 5-HT and 5-HIAA but the only significant effect on dopamine, 5-HT and their metabolites following chronic dosing was altered hippocampal 3,4-dihydroxyphenylacetic acid (DOPAC), following mephedrone (4, 10mg/kg) and MDMA. At the doses examined, mephedrone, cathinone, and MDMA induced similar effects on behaviour and failed to induce neurotoxic damage when administered intermittently over 3 weeks. CI - Copyright (c) 2012 Elsevier B.V. and ECNP. All rights reserved. FAU - Shortall, Sinead E AU - Shortall SE AD - School of Biomedical Sciences, University of Nottingham Medical School, Queen's Medical Centre, Nottingham NG7 2UH, UK. FAU - Macerola, Alice E AU - Macerola AE FAU - Swaby, Rabbi T R AU - Swaby RT FAU - Jayson, Rebecca AU - Jayson R FAU - Korsah, Chantal AU - Korsah C FAU - Pillidge, Katharine E AU - Pillidge KE FAU - Wigmore, Peter M AU - Wigmore PM FAU - Ebling, Francis J P AU - Ebling FJ FAU - Richard Green, A AU - Richard Green A FAU - Fone, Kevin C F AU - Fone KC FAU - King, Madeleine V AU - King MV LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20121007 PL - Netherlands TA - Eur Neuropsychopharmacol JT - European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology JID - 9111390 RN - 0 (Alkaloids) RN - 44RAL3456C (Methamphetamine) RN - 540EI4406J (cathinone) RN - 8BA8T27317 (mephedrone) RN - KE1SEN21RM (N-Methyl-3,4-methylenedioxyamphetamine) SB - IM MH - Alkaloids/*administration & dosage MH - Animals MH - Brain/drug effects/*metabolism MH - Conditioning, Psychological/*drug effects/physiology MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Male MH - Methamphetamine/administration & dosage/*analogs & derivatives MH - Motor Activity/*drug effects/physiology MH - N-Methyl-3,4-methylenedioxyamphetamine/*administration & dosage MH - Random Allocation MH - Rats OTO - NOTNLM OT - 5-HT OT - Cathinone OT - Dopamine OT - Locomotion OT - MDMA OT - Mephedrone EDAT- 2012/10/12 06:00 MHDA- 2014/05/03 06:00 CRDT- 2012/10/12 06:00 PHST- 2012/06/01 00:00 [received] PHST- 2012/08/10 00:00 [revised] PHST- 2012/09/13 00:00 [accepted] PHST- 2012/10/12 06:00 [entrez] PHST- 2012/10/12 06:00 [pubmed] PHST- 2014/05/03 06:00 [medline] AID - S0924-977X(12)00269-6 [pii] AID - 10.1016/j.euroneuro.2012.09.005 [doi] PST - ppublish SO - Eur Neuropsychopharmacol. 2013 Sep;23(9):1085-95. doi: 10.1016/j.euroneuro.2012.09.005. Epub 2012 Oct 7.