title: Relationship between polymorphism of class II transactivator gene promoters and chronic hepatitis B.
abstract: OBJECTIVE
  To investigate the relationship between the polymorphism of class II transactivator (CIITA) gene promoters and chronic hepatitis B (CHB).
  
  
  METHODS
  Genomic DNA was prepared from peripheral blood leukocytes. Promoters I, III and IV of gene were analyzed respectively with polymerase chain reaction single strand conformation polymorphism (PCR-SSCP) in 65 patients with CHB, 26 patients with acute hepatitis B (AHB) and 85 normal controls.
  
  
  RESULTS
  No abnormal migration was found in PCR-SSCP analysis of the three promoters in the three groups. Also, no sequential difference was observed at the three promoters among the CHB patients, AHB patients and normal controls.
  
  
  CONCLUSIONS
  No polymorphism in promoters I, III and IV of CIITA gene exists in CHB patients, ABH patients and normal controls, suggesting that the promoter of CIITA gene might be a conserved domain.
authors.affiliation: Department of Infectious Diseases, First Hospital of Xi'an Jiaotong University, Xi'an 710061, Shaanxi Province, China. zhaoyingren@sohu.com
authors.forename: Ying-Ren
authors.initials: YR
authors.lastname: Zhao
authors.forename: Ling
authors.initials: L
authors.lastname: Gong
authors.forename: Ying-Li
authors.initials: YL
authors.lastname: He
authors.forename: Fang
authors.initials: F
authors.lastname: Liu
authors.forename: Chang
authors.initials: C
authors.lastname: Lu
mesh_terms: D000208:Acute Disease; D000328:Adult; D005260:Female; D019694:Hepatitis B, Chronic / Q000235:genetics*; D006801:Humans; D008297:Male; D009687:Nuclear Proteins / Q000235:genetics*; D016133:Polymerase Chain Reaction; D018807:Polymorphism, Single-Stranded Conformational; D011401:Promoter Regions, Genetic / Q000235:genetics*; D015534:Trans-Activators / Q000235:genetics*
chemical_list: C083728:MHC class II transactivator protein; D009687:Nuclear Proteins; D015534:Trans-Activators