title: Expression of dopamine transporter in the different cerebral regions of methamphetamine-dependent rats.
abstract: OBJECTIVE
  To observe the expression of the dopamine transporter (DAT) in six cerebral regions of a methamphetamine (MA)-dependent rat, which were frontal cortex, nucleus accumbens septi, striatum, hippocampus, substantia nigra and ventral tegmental area.
  
  
  METHODS
  The rats were administrated intraperitoneally with 10 mg/kg/day of MA for 10 days consecutively; the behaviour changes were measured via the conditioned place preference (CPP), and the scores of stereotyped behaviour (SB) were used to confirm animal addiction. Then, the animals were further injected with MA respectively for 1, 2, 4 and 8 weeks to establish different periods of MA-dependent models. The expressions of DAT and DAT messenger RNA in six cerebral regions were detected.
  
  
  RESULTS
  The results of CPP and SB scores were significant different when comparing all four experimental groups with the control group (p < 0.05). Comparing between different experimental groups, the expression of DAT mainly decreased and had dynamic changes in the same regions (p < 0.05). Comparing the different regions with each other in the same experimental group, the expression of DAT also had significant difference in several regions p < 0.05).
  
  
  CONCLUSIONS
  The expression of DAT mainly decreased and had different in the six cerebral regions at the same MA-dependent time period as well as at different time periods in the same cerebral region. It was speculated that DAT might play a crucial role in the mechanism of MA dependence.
authors.affiliation: The School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China The Institute of Neuroscience, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China.
authors.forename: S-J
authors.initials: SJ
authors.lastname: Hong
authors.affiliation: The Institute of Criminal Science and Technology, Public Security Bureau of Lincang City, Yunnan Province, People's Republic of China.
authors.forename: D
authors.initials: D
authors.lastname: Zhang
authors.affiliation: The School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China.
authors.forename: L-H
authors.initials: LH
authors.lastname: Zhang
authors.affiliation: The Institute of Criminal Science and Technology, Public Security Bureau of Lincang City, Yunnan Province, People's Republic of China.
authors.forename: P
authors.initials: P
authors.lastname: Yang
authors.affiliation: The School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China.
authors.forename: J
authors.initials: J
authors.lastname: Wan
authors.affiliation: The School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China.
authors.forename: Y
authors.initials: Y
authors.lastname: Yu
authors.affiliation: The Institute of Neuroscience, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China.
authors.forename: T-H
authors.initials: TH
authors.lastname: Wang
authors.affiliation: The Institute of Neuroscience, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China.
authors.forename: Z-T
authors.initials: ZT
authors.lastname: Feng
authors.affiliation: The School of Forensic Medicine, Kunming Medical University, Kunming, Yunnan Province, People's Republic of China lilihua1229@sohu.com.
authors.forename: L-H
authors.initials: LH
authors.lastname: Li
authors.affiliation: Brain Research Centre, Institute of Chinese Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, People's Republic of China david-yew@cuhk.edu.hk.
authors.forename: D T W
authors.initials: DT
authors.lastname: Yew
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D001921:Brain / Q000187:drug effects* / Q000378:metabolism; D015259:Dopamine Agents / Q000494:pharmacology*; D050483:Dopamine Plasma Membrane Transport Proteins / Q000378:metabolism*; D005260:Female; D008297:Male; D008694:Methamphetamine / Q000494:pharmacology*; D017207:Rats, Sprague-Dawley; D019966:Substance-Related Disorders / Q000378:metabolism / Q000503:physiopathology
chemical_list: D015259:Dopamine Agents; D050483:Dopamine Plasma Membrane Transport Proteins; D008694:Methamphetamine
keywords: Drug toxicology; neurotoxicology; pathology