Efficacy of antiviral agents in feline herpetic keratitis: results of an in vitro study.

Abstract:

PURPOSE:To determine, by a plaque reduction assay, the in vitro efficacy of novel antiviral agents in the treatment of feline herpes virus 1 (FHV-1) keratitis in the domestic cat (Felis felis). MATERIALS AND METHODS:A standard plaque reduction assay was performed using a laboratory strain of FHV-1 and embryo-derived feline kidney cells to determine the in vitro efficacy of the antiviral drugs penciclovir (PCV), bromovinyldeoxyuridine (BVdU), and (S)-9-(3-hydroxy-2-phosphonylmethoxypropyl) adenine (HPMPA) and to compare these with the drugs acyclovir (ACV) and trifluorothymidine (TFT). Efficacy was assessed by determining the dose of drug at which 50% plaque reduction was noted (ED(50)). RESULTS:HPMPA was found to have greatest antiviral activity (ED(50) 0.07 microg/ml). ACV was least active (ED(50) 24 microg/ml), while TFT was active with an ED(50) of 5.7 microg/ml. PCV and BVdU had intermediate activity (ED(50) 1.6 and 1.7 microg/ml, respectively). CONCLUSIONS:This study suggests that the efficacy of HPMPA, BVdU, and penciclovir in cats with herpesviral keratitis should be determined in vivo as their efficacy in vitro was substantially greater than that of acyclovir, already shown to have demonstrable but limited clinical antiviral activity.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Williams DL,Fitzmaurice T,Lay L,Forster K,Hefford J,Budge C,Blackmore K,Robinson JC,Field HF

doi

10.1080/02713680490504849

subject

Has Abstract

pub_date

2004-08-01 00:00:00

pages

215-8

issue

2-3

eissn

0271-3683

issn

1460-2202

pii

B3WU5C9UCCL57A81

journal_volume

29

pub_type

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