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Antimicrobial Agents and Chemotherapy, June 2000, p. 1757-1760, Vol. 44, No. 6
0066-4804/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Effect of Oral Administration of Emtricitabine on Woodchuck
Hepatitis Virus Replication in Chronically Infected
Woodchucks
Brent E.
Korba,1,*
R. F.
Schinazi,2
Paul
Cote,1
Bud C.
Tennant,3 and
John L.
Gerin1
Division of Molecular Virology and
Immunology, Georgetown University Medical Center, Rockville,
Maryland1; Veterans Administration
Hospital, Emory University, Decatur, Georgia2;
and College of Veterinary Medicine, Cornell University,
Ithaca, New York3
Received 5 August 1999/Returned for modification 4 November
1999/Accepted 20 March 2000
Emtricitabine [(
)FTC]
[(
)-
-2',3'-dideoxy-5-fluoro-3'-thiacytidine] has been shown to
be an effective inhibitor of hepatitis B virus (HBV) in cell culture,
with a potency and selectivity that are essentially identical to those
of lamivudine. The antiviral activity of oral administration of (
)FTC
against WHV replication in chronically infected woodchucks, an
established and predictive model for antiviral therapy against HBV, was
examined in a placebo-controlled study. (
)FTC significantly reduced
viremia and intrahepatic WHV replication in a dose-dependent manner
that was comparable to the antiviral activity of lamivudine observed in
previous studies conducted by our laboratories. No effect on the levels
of hepatic WHV RNA or the levels of woodchuck hepatitis surface antigen
or anti-woodchuck hepatitis surface and core antibodies in the serum of
the treated animals was observed. No evidence of drug-related toxicity
was observed in any of the animals treated.
*
Corresponding author. Mailing address: Division of
Molecular Virology and Immunology, Georgetown University Medical
Center, 13 Taft Ct., Rockville, MD 20850. Phone: (301) 881-2676. Fax: (301) 881-0810. E-mail: Korbabe{at}gusun.georgetown.edu.
Antimicrobial Agents and Chemotherapy, June 2000, p. 1757-1760, Vol. 44, No. 6
0066-4804/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
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