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Treatment of delta hepatitis.

Abstract
Hepatitis delta virus (HDV) is a defective RNA virus that depends on hepatitis B virus (HBV) for its lifecycle. Treatment of chronic HDV infection is difficult as it does not have an enzymatic function as a target, such as polymerases and proteases of HBV and hepatitis C virus. Recently, it has been suggested that farnesyl transferase could be an enzymatic target. Currently, interferon is the only agent against HDV infection. Virological response has risen to 20-47% with pegylated interferon. Monotherapy of nucleos(t)ide analogs are ineffective against the HDV infection, but adefovir and pegylated interferon combination therapy have had some advantages for reduction of HBV surface antigen (HBsAg) levels. Recent studies suggest that measuring HBsAg levels during treatment could be more meaningful than HDV RNA negativity to predict virological response. Prenylation inhibitors that can affect the interactions between the large HDV antigen and HBsAg in the HDV virion are expected treatments for HDV infection. More studies are needed to understand the molecular mechanisms of HDV to manage the disease.
AuthorsFulya Gunsar
JournalExpert review of anti-infective therapy (Expert Rev Anti Infect Ther) Vol. 11 Issue 5 Pg. 489-98 (May 2013) ISSN: 1744-8336 [Electronic] England
PMID23627855 (Publication Type: Journal Article, Review)
Chemical References
  • Antiviral Agents
  • Hepatitis delta Antigens
  • Interferon-alpha
  • Organophosphonates
  • Recombinant Proteins
  • Viral Proteins
  • hepatitis delta virus large antigen
  • Polyethylene Glycols
  • adefovir
  • Farnesyl-Diphosphate Farnesyltransferase
  • Adenine
  • peginterferon alfa-2a
Topics
  • Adenine (analogs & derivatives, therapeutic use)
  • Antiviral Agents (therapeutic use)
  • Drug Therapy, Combination
  • Farnesyl-Diphosphate Farnesyltransferase (antagonists & inhibitors, genetics)
  • Hepatitis B virus (drug effects, genetics, metabolism)
  • Hepatitis B, Chronic (drug therapy, virology)
  • Hepatitis D, Chronic (drug therapy, virology)
  • Hepatitis Delta Virus (drug effects, genetics, metabolism)
  • Hepatitis delta Antigens (genetics)
  • Humans
  • Interferon-alpha (therapeutic use)
  • Organophosphonates (therapeutic use)
  • Polyethylene Glycols (therapeutic use)
  • Protein Prenylation (drug effects)
  • Recombinant Proteins (therapeutic use)
  • Viral Proteins (antagonists & inhibitors, genetics)
  • Virus Replication (drug effects)

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