title: Hepatitis B virus DNA in liver tissue and risk for hepatocarcinogenesis in patients with hepatitis C virus-related chronic liver disease. A prospective study.
abstract: OBJECTIVE
  To prospectively study whether occult hepatitis B virus (HBV) infection can promote the development of hepatocellular carcinoma (HCC) in patients with hepatitis C virus (HCV)-related chronic liver disease. In addition, to evaluate the difference among HBV DNA-negative patients and patients with high and low HBV copy numbers.
  
  
  METHODS
  A total of 167 patients with HCV-related chronic liver disease without HBV surface antigen (HBsAg) were studied. HBV DNA in liver tissue was determined using polymerase chain reaction (PCR).
  
  
  RESULTS
  HBV DNA was detected in 9 of 167 patients (5.4%) by single PCR and in 25 patients (15.0%) by nested PCR. HCC developed in 12 of 167 patients (7.2%). Ten of 142 HBV DNA-negative patients (7.0%) and 2 of 9 patients with a high HBV copy number (22.2%) developed HCC, whereas none of 16 patients with a low HBV copy number developed HCC. The incidence rate of HCC in patients with a high HBV copy number was significantly higher than in HBV DNA-negative patients and patients with low HBV copy number.
  
  
  CONCLUSIONS
  A high amount of HBV DNA in liver tissue of HBsAg-negative patients with HCV-related liver disease might be associated with HCC development.
authors: Department of Laboratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. gmd16802@cc.okayama-u.ac.jp
authors: Mikako
authors: M
authors: Obika
authors: Toshiyuki
authors: T
authors: Shinji
authors: Shin-Ichi
authors: S
authors: Fujioka
authors: Ryo
authors: R
authors: Terada
authors: Hiromasa
authors: H
authors: Ryuko
authors: Aye Aye
authors: AA
authors: Lwin
authors: Hidenori
authors: H
authors: Shiraha
authors: Norio
authors: N
authors: Koide
mesh_terms: D000328:Adult; D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000453:epidemiology / Q000821:virology*; D004279:DNA, Viral / Q000235:genetics / Q000302:isolation & purification*; D005260:Female; D006509:Hepatitis B / Q000821:virology*; D006514:Hepatitis B Surface Antigens / Q000097:blood; D006515:Hepatitis B virus / Q000235:genetics / Q000302:isolation & purification*; D019698:Hepatitis C, Chronic / Q000150:complications* / Q000821:virology*; D006801:Humans; D015994:Incidence; D008099:Liver / Q000821:virology*; D008107:Liver Diseases; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011446:Prospective Studies
chemical_list: D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens