Molecular and serological characterization of hepatitis B virus in deferred Ghanaian blood donors with and without elevated alanine aminotransferase

J Viral Hepat. 2006 Nov;13(11):715-24. doi: 10.1111/j.1365-2893.2006.00741.x.

Abstract

Candidate blood donors in Ghana are frequent carriers of hepatitis B virus (HBV). A comparative study of 117 donor samples including 46 with alanine aminotransferase (ALT) > or = 60 IU/L and 71 with < or =40 IU/L level was undertaken. S and the basic core promoter-precore regions (BCP/PC) sequencing was used to identify genotypes and variants relevant to HBV natural history, respectively. Age, viral load, HBe status were correlated with molecular data. HBV genotype E (87%) was dominant with little genotypes A (10%) and D (3%). Comparing individuals with or without liver disease, an association between liver disease and older age (P = 0.004) and higher viral load (P = 0.002) whether as a whole population or only genotype E was found. Compared with a commercial assay, BCP/PC sequencing had lower sensitivity to detect mixtures of wild-type and variant viruses but detected BCP deletions. BCP 1762/1764 variants were positively correlated with older age (P < 0.0001) and elevated ALT levels (P = 0.01). PC 1896 stop codon was marginally correlated with viral load (P = 0.09). HBV genotype E infection natural history appears different from genotypes B and C prevalent in Asia. Donors with liver disease being older, with higher viral load and higher BCP variant proportion may be at higher risk of cirrhosis and hepatocellular carcinoma.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Alanine Transaminase / biosynthesis
  • Alanine Transaminase / blood*
  • Base Sequence / genetics
  • Blood Donors*
  • Cross-Sectional Studies
  • DNA, Viral / blood
  • Female
  • Ghana
  • Hepatitis B / blood*
  • Hepatitis B / enzymology
  • Hepatitis B / virology*
  • Hepatitis B e Antigens / blood
  • Hepatitis B virus / classification*
  • Hepatitis B virus / genetics
  • Hepatitis B virus / immunology
  • Humans
  • Male
  • Middle Aged
  • Molecular Sequence Data
  • Phylogeny
  • Viral Load

Substances

  • DNA, Viral
  • Hepatitis B e Antigens
  • Alanine Transaminase