title: [Behavior study of ketamine-induced symptoms similar to schizophrenia in mice].
abstract: OBJECTIVE
  To observe the symptoms similar to schizophrenia in mice after ketamine single or continuous injection and to evaluate the feasibility of schizophrenia model injected with different dose of ketamine.
  
  
  METHODS
  A total of 40 male mice were randomly divided into 4 groups, which were injected intraperitoneally with physiological saline (control group), 25 mg/kg ketamine (low dose group), 50 mg/kg ketamine (middle dose group), and 100 mg/kg ketamine (high dose group) qd for 7 days continuously. The behavior changes of mice were observed.
  
  
  RESULTS
  Hyperactivity, stereotyped behavior and ataxia (P < 0.01) were observed in high dose group after single injection. After continuous injection of ketamine for 7 days, the middle dose group showed hyperactivity, stereotyped behavior and ataxia (P < 0.05), stereotyped behavior and ataxia were more significant in high dose group (P < 0.01).
  
  
  CONCLUSIONS
  Ketamine can induce the symptoms similar to schizophrenia in mice after single or continuous injection. The symptoms induced by high dose ketamine will be more prominent and stable after continuous injection.
authors.affiliation: Department of Forensic Medicine, Medical College of Soochow University, Suzhou 215123, China. liuweilisuda@sohu.com
authors.forename: Wei-Li
authors.initials: WL
authors.lastname: Liu
authors.forename: Shi-Zhong
authors.initials: SZ
authors.lastname: Bian
authors.forename: Zhen-Lun
authors.initials: ZL
authors.lastname: Gu
authors.forename: Xiao-Gang
authors.initials: XG
authors.lastname: Jiang
authors.forename: Ci-Yi
authors.initials: CY
authors.lastname: Guo
authors.forename: Yan-Bo
authors.initials: YB
authors.lastname: Zhao
mesh_terms: D000818:Animals; D001259:Ataxia / Q000139:chemically induced / Q000473:pathology; D004195:Disease Models, Animal; D004305:Dose-Response Relationship, Drug; D005555:Forensic Psychiatry; D007274:Injections, Intraperitoneal; D007649:Ketamine / Q000008:administration & dosage*; D008297:Male; D051379:Mice; D009043:Motor Activity / Q000187:drug effects*; D011897:Random Allocation; D016194:Receptors, N-Methyl-D-Aspartate / Q000037:antagonists & inhibitors*; D012559:Schizophrenia / Q000139:chemically induced / Q000473:pathology*; D013239:Stereotyped Behavior / Q000187:drug effects*
chemical_list: D016194:Receptors, N-Methyl-D-Aspartate; D007649:Ketamine