PMID- 28454718 OWN - NLM STAT- MEDLINE DCOM- 20170629 LR - 20220321 IS - 1879-0631 (Electronic) IS - 0024-3205 (Linking) VI - 179 DP - 2017 Jun 15 TI - Effects of co-administration of ketamine and ethanol on the dopamine system via the cortex-striatum circuitry. PG - 1-8 LID - S0024-3205(17)30198-4 [pii] LID - 10.1016/j.lfs.2017.04.018 [doi] AB - AIM: Ketamine and ethanol are increasingly being used together as recreational drugs in rave parties. Their effects on the dopamine (DA) system remain largely unknown. This study aimed to investigate the effects of consuming two different concentrations of ketamine with and without alcohol on the DA system. MATERIALS AND METHODS: We employed the conditioned place preference (CPP) paradigm to evaluate the rewarding effects of the combined administration of two different doses of ketamine (30mg/kg and 60mg/kg) with ethanol (0.3156g/kg). We evaluated the effects of the combined drug treatment on the transcriptional output of tyrosine hydroxylase (TH), dopa decarboxylase (DDC), synaptosomal-associated protein 25 (SNAP25), and vesicular monoamine transporter 2 (VMAT2) as well as protein expression level of brain-derived neurotrophic factor (BDNF) in rat prefrontal cortex (PFC) and striatum. KEY FINDINGS: We found that rats exhibited a dose-dependent, drug-paired, place preference to ketamine and ethanol associated with an elevated DA level in the striatum but not in the PFC. Moreover, treatment involving low- or high-dose ketamine with or without ethanol caused a differential regulatory response in the mRNA levels of the four DA metabolism genes and the cellular protein abundance of BDNF via the cortex-striatum circuitry. SIGNIFICANCE: This study investigated the molecular mechanisms that occur following the combined administration of ketamine and ethanol in the DA system, which could potentially lead to alterations in the mental status and behavior of ketamine/ethanol users. Our findings may aid the development of therapeutic strategies for substance abuse patients. CI - Copyright (c) 2017 Elsevier Inc. All rights reserved. FAU - Liu, Qing AU - Liu Q AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. FAU - Xu, Tian-Yong AU - Xu TY AD - Experiment Center for Medical Science Research, Kunming Medical University, Kunming, Yunnan, China. FAU - Zhang, Zhi-Bi AU - Zhang ZB AD - Experiment Center for Medical Science Research, Kunming Medical University, Kunming, Yunnan, China. FAU - Leung, Chi-Kwan AU - Leung CK AD - School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China; CUHK-SDU Joint Laboratory of Reproductive Genetics, School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China. FAU - You, Ding-Yun AU - You DY AD - Department of Science and Technology, Kunming Medical University, Kunming, Yunnan, China. FAU - Wang, Shang-Wen AU - Wang SW AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. FAU - Yi, Shuai AU - Yi S AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. FAU - Jing, Qiang AU - Jing Q AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. FAU - Xie, Run-Fang AU - Xie RF AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. FAU - Li, Huifang-Jie AU - Li HJ AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. Electronic address: lhfj_8156@foxmail.com. FAU - Zeng, Xiao-Feng AU - Zeng XF AD - School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan, China. Electronic address: zxf2004033@163.com. LA - eng PT - Journal Article DEP - 20170426 PL - Netherlands TA - Life Sci JT - Life sciences JID - 0375521 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - 3K9958V90M (Ethanol) RN - 690G0D6V8H (Ketamine) RN - VTD58H1Z2X (Dopamine) SB - IM EIN - Life Sci. 2017 Jul 15;181:70. PMID: 28587724 MH - Animals MH - Behavior, Animal/drug effects MH - Brain-Derived Neurotrophic Factor/metabolism MH - Conditioning, Psychological/drug effects MH - Corpus Striatum/*drug effects/metabolism MH - Dopamine/*metabolism MH - Dose-Response Relationship, Drug MH - Ethanol/administration & dosage/*pharmacology MH - Ketamine/administration & dosage/*pharmacology MH - Male MH - Prefrontal Cortex/*drug effects/metabolism MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Sprague-Dawley OTO - NOTNLM OT - Conditioned place preference OT - Dopamine OT - Ethanol OT - Ketamine OT - SNAP25 EDAT- 2017/04/30 06:00 MHDA- 2017/07/01 06:00 CRDT- 2017/04/30 06:00 PHST- 2017/03/02 00:00 [received] PHST- 2017/04/21 00:00 [revised] PHST- 2017/04/24 00:00 [accepted] PHST- 2017/04/30 06:00 [pubmed] PHST- 2017/07/01 06:00 [medline] PHST- 2017/04/30 06:00 [entrez] AID - S0024-3205(17)30198-4 [pii] AID - 10.1016/j.lfs.2017.04.018 [doi] PST - ppublish SO - Life Sci. 2017 Jun 15;179:1-8. doi: 10.1016/j.lfs.2017.04.018. Epub 2017 Apr 26.