title: In vitro and in vivo comparison of the abilities of purine and pyrimidine 2',3'-dideoxynucleosides to inhibit duck hepadnavirus.
abstract: Four purine and two pyrimidine 2',3'-dideoxynucleosides were studied for their ability to inhibit duck hepadnavirus replication. The purine 2',3'-dideoxynucleosides were more potent antiviral agents than the pyrimidine 2',3'-dideoxynucleosides. The concentration for 50% inhibition of viral replication (IC50) was determined for each of the effective agents. Two drugs with low IC50s, 2,6-diaminopurine 2',3'-dideoxyriboside and 2',3'-dideoxyadenosine, were chosen for in vivo studies. Animals received 10 mg/kg intramuscularly twice daily. Rapid clearance of hepadnavirus DNA from the sera of the animals was seen as a result of treatment with 2,6-diaminopurine 2',3'-dideoxyriboside; however, treatment with 2',3'-dideoxyadenosine did not clear the virus.
authors.affiliation: Department of Medical Microbiology and Infectious Diseases, University of Alberta, Edmonton, Canada.
authors.forename: B
authors.initials: B
authors.lastname: Lee
authors.forename: W X
authors.initials: WX
authors.lastname: Luo
authors.forename: S
authors.initials: S
authors.lastname: Suzuki
authors.forename: M J
authors.initials: MJ
authors.lastname: Robins
authors.forename: D L
authors.initials: DL
authors.lastname: Tyrrell
mesh_terms: D000818:Animals; D000998:Antiviral Agents / Q000494:pharmacology* / Q000627:therapeutic use; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D004279:DNA, Viral / Q000096:biosynthesis; D015224:Dideoxynucleosides / Q000494:pharmacology* / Q000627:therapeutic use; D004372:Ducks; D006509:Hepatitis B / Q000188:drug therapy; D006515:Hepatitis B virus / Q000187:drug effects* / Q000502:physiology; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D009693:Nucleic Acid Hybridization; D014764:Viral Proteins / Q000378:metabolism; D014779:Virus Replication / Q000187:drug effects
chemical_list: D000998:Antiviral Agents; D004279:DNA, Viral; D015224:Dideoxynucleosides; D014764:Viral Proteins; D007770:L-Lactate Dehydrogenase