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. 1989 Mar;33(3):340–344. doi: 10.1128/aac.33.3.340

Anti-herpes simplex virus activity of 5-substituted 2-pyrimidinone nucleosides.

G A Lewandowski 1, S P Grill 1, M H Fisher 1, G E Dutschman 1, S M Efange 1, T J Bardos 1, Y C Cheng 1
PMCID: PMC171490  PMID: 2543279

Abstract

Several 5-substituted 2-pyrimidinone 2'-deoxyribonucleoside (PdR) analogs were examined for their anti-herpes simplex virus (HSV) activity in cell culture. The order of potency of their antiviral activities against HSV type 1 (HSV-1) and HSV-2 was iodo PdR approximately ethynyl PdR approximately propynyl PdR. The antiviral action of iodo PdR is dependent on the ability of HSV to induce virus-specified thymidine kinase in infected cells. Several HSV-1 variants with altered thymidine kinase changed their sensitivity to iodo PdR, whereas HSV-1 variants with altered DNA polymerase were as sensitive as the parental virus to iodo PdR. Continuous presence of iodo PdR for more than one virus replication cycle was required for optimal antiviral activity. Iodo PdR (100 microM) had no activity against Epstein-Barr virus DNA replication in P3HR-1 cells. With an oral, an intraperitoneal, or a subcutaneous route of injection, iodo PdR administered twice a day for 2.5 days could prevent the death of mice infected with HSV-2. This in vivo activity is unlikely to be related to the potential conversion of iodo PdR to iododeoxyuridine, since iodo PdR is not a substrate of xanthine oxidase.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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