title: Tardive dyskinesia is not associated with the polymorphisms of 5-HT2A receptor gene, serotonin transporter gene and catechol-o-methyltransferase gene.
abstract: BACKGROUND
  The pathophysiology of tardive dyskinesia (TD) is not completely understood.Aim. - To assess the relationship of TD with 5-HT2A receptor gene, serotonin transporter gene (5 HTT), and catechol-o-methyltransferase (COMT) gene polymorphisms.
  
  
  METHODS
  Our study comprised 111 unrelated subjects who strictly met DSM-IV criteria for schizophrenia and 32 TD, and 79 healthy unrelated controls; all the subjects were of Turkish origin. The analyses of 5-HT2A receptor gene, 5 HTT gene, and COMT gene polymorphisms were performed using polymerase chain reaction (PCR) technique.
  
  
  RESULTS
  The polymorphisms of these genes were not significantly different between the schizophrenic patients, TD and control subjects.
  
  
  CONCLUSIONS
  Our findings indicated that 5-HT2A receptor gene, 5 HTT gene, and COMT gene polymorphisms were similar in schizophrenia with non-TD, schizophrenia with TD, and healthy controls. These polymorphisms, though, do not help to evaluate the susceptibility to TD.
authors.affiliation: Department of Psychiatry, Medical Faculty of Gaziantep University, City, Gaziantep, Turkey. hasanherken@hotmail.com
authors.forename: Hasan
authors.initials: H
authors.lastname: Herken
authors.forename: M Emin
authors.initials: ME
authors.lastname: Erdal
authors.forename: Omer
authors.initials: O
authors.lastname: Böke
authors.forename: Haluk A
authors.initials: HA
authors.lastname: Savaş
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000009:adverse effects* / Q000627:therapeutic use; D002352:Carrier Proteins / Q000235:genetics* / Q000378:metabolism; D016022:Case-Control Studies; D002394:Catechol O-Methyltransferase / Q000235:genetics* / Q000378:metabolism; D004409:Dyskinesia, Drug-Induced / Q000209:etiology* / Q000378:metabolism; D005260:Female; D006801:Humans; D008297:Male; D008562:Membrane Glycoproteins / Q000235:genetics* / Q000378:metabolism; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D044402:Receptor, Serotonin, 5-HT2A; D011985:Receptors, Serotonin / Q000235:genetics* / Q000378:metabolism; D012307:Risk Factors; D012559:Schizophrenia / Q000188:drug therapy / Q000378:metabolism; D050486:Serotonin Plasma Membrane Transport Proteins
chemical_list: D014150:Antipsychotic Agents; D002352:Carrier Proteins; D008562:Membrane Glycoproteins; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D044402:Receptor, Serotonin, 5-HT2A; D011985:Receptors, Serotonin; C493230:SLC6A4 protein, human; D050486:Serotonin Plasma Membrane Transport Proteins; D002394:Catechol O-Methyltransferase