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Antimicrob Agents Chemother. 1986 February; 29(2): 294-297

Efficacy of the acyclic guanosine analog buciclovir [(R)-9-(3,4-dihydroxybutyl)guanine] in experimental genital herpes.

ABSTRACT

The efficacy of the anti-herpesvirus drug buciclovir [(R)-9-(3,4-dihydroxybutyl)guanine] was investigated in guinea pigs and mice infected intravaginally with herpes simplex virus type 2. Topical treatment initiated early after infection was efficacious, in contrast to topical treatment delayed 24 h or more. Systemic treatment of infected mice could not prevent the spread of virus to the brain and mortality. Systemically administered buciclovir had an effect in guinea pigs, even after delayed onset of treatment, but this effect required high doses of the drug. Our results suggest that buciclovir has only a limited effect against herpesvirus infections once the virus is present in the nervous systems of infected animals.