title: [The contrast study of Pre-S1 protein, HBV-DNA and HBeAg in diagnosing viral replication in patients with chronic hepatitis B].
abstract: OBJECTIVE
  To determine the role of Pre-S1 protein in diagnosing viral replication in patients with chronic hepatitis B.
  
  
  METHODS
  104 consecutive patients with chronic hepatitis B were included in the study, liver biopsy were performed in all patients. Serial serum samples were studied with the quantitative determination of HBV-DNA by a quantitative PCR assay, determination of Pre-S1 protein by ELISA.
  
  
  RESULTS
  The positive rates of HBV-DNA and Pre-S1 protein in patients with HBsAg HBeAg anti-HBc (+) both were 96.5%. The positive rates of HBV-DNA and Pre-S1 protein in patients with HBsAg anti-HBe anti-HBc (+) were 81.5%, 72.3%, respectively. The positive rates of HBV-DNA and Pre-S1 protein in patients with HBsAg anti-HBc (+) were 87.5%, 75.0%, respectively. It represented some patients with HBeAg (-) anti-HBe (+/-) still had viral replication. HBV-DNA>10(3) copy/ml as positive criteria for diagnosing viral replication, the positive rate of HBeAg, Pre-S1 were 31.5% (28/89), 80.9% (72/89) in patients with HBV-DNA>10(3) copy/ml, respectively. The concordance rates of HBeAg, Pre-S1 with HBV-DNA were 40.0% (42/104), 82.0% (85/104), respectively.
  
  
  CONCLUSIONS
  It showed that Pre-S1 was more sensitive than HBeAg in diagnosing viral replication in patients with chronic hepatitis B.
authors.affiliation: Liver Research Center, Beijing Friendship Hospital Affiliate of Capital University of Medical Sciences, Beijing 100050, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Li
authors.forename: Gui-zhen
authors.initials: GZ
authors.lastname: Sun
authors.forename: Yu-xiang
authors.initials: YX
authors.lastname: Wei
authors.forename: Yu-yuan
authors.initials: YY
authors.lastname: Min
authors.forename: Yu-long
authors.initials: YL
authors.lastname: Cong
authors.forename: Xiao-juan
authors.initials: XJ
authors.lastname: Ou
authors.forename: Bao-en
authors.initials: BE
authors.lastname: Wang
mesh_terms: D000328:Adult; D004279:DNA, Viral / Q000097:blood*; D005260:Female; D006514:Hepatitis B Surface Antigens / Q000097:blood*; D006513:Hepatitis B e Antigens / Q000097:blood*; D006515:Hepatitis B virus / Q000502:physiology*; D019694:Hepatitis B, Chronic / Q000821:virology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011498:Protein Precursors / Q000097:blood*; D014779:Virus Replication
chemical_list: D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens; D006513:Hepatitis B e Antigens; D011498:Protein Precursors; C050806:presurface protein 1, hepatitis B surface antigen