Key result
Combined therapy of acyclovir followed by suramin attained a sustained reduction of polymerase activity in DHBV-infected ducks compared to monotherapy.
Why the study?
Does acyclovir and suramin alone or in combination reduce DHBV replication in persistently infected Pekin ducks?
Does acyclovir and suramin alone or in combination reduce DHBV replication in persistently infected Pekin ducks?
Combined therapy with acyclovir and suramin provides sustained reduction of viral replication in a duck model of hepatitis B, suggesting potential for enhanced antiviral efficacy.
Supports preclinical HBV antiviral sequencing; leaves open human translation from duck data alone.
Acyclovir and suramin were examined for their efficacy alone and in combination against duck hepatitis B virus (DHBV) in persistently infected Pekin ducks. In ducks the peak plasma concentration of acyclovir was reached thirty minutes after oral administration. Oral acyclovir and suramin administered intravenously suppressed the replication and production of infectious virions as measured by marked reduction of DNA polymerase activity during treatment. However, rebound of enzyme activity was observed soon after cessation of drug therapy. In contrast, sustained reduction of polymerase activity was attained by combined therapy of acyclovir followed by suramin, demonstrating a significant enhancement of anti-DHBV activity which requires confirmation in a larger experimental study. This report establishes that the duck model is ideal for screening antiviral compounds in treatment of infection with Hepadna viruses.
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Tsiquaye et al. (1986) studied Duck hepatitis B virus (DHBV) infection. Acyclovir and suramin vs. Monotherapy vs combination therapy was evaluated on DNA polymerase activity. Combined therapy of acyclovir followed by suramin attained a sustained reduction of polymerase activity in DHBV-infected ducks compared to monotherapy.
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