PMID- 18201137 OWN - NLM STAT- MEDLINE DCOM- 20080415 LR - 20211020 IS - 1080-7683 (Print) IS - 1557-7732 (Electronic) IS - 1080-7683 (Linking) VI - 24 IP - 1 DP - 2008 Feb TI - Efficacy of a helicase-primase inhibitor in animal models of ocular herpes simplex virus type 1 infection. PG - 34-42 LID - 10.1089/jop.2007.0084 [doi] AB - PURPOSE: The aim of this study was to evaluate the effect of BAY 57-1293, a helicase-primase inhibitor, on herpes simplex virus type 1 (HSV-1) reactivation in mice and its efficacy on established disease in rabbits. METHODS: BALB/c mice latent for McKrae-strain HSV-1 were reactivated via heat stress, treated with BAY 57-1293, and their corneas were swabbed for virus or the trigeminal ganglia (TG) obtained for quantification of viral DNA. New Zealand white rabbits were infected and treated topically or orally in comparison with trifluridine or valacyclovir. RESULTS: Oral BAY 57-1293 suppressed reactivation in HSV-1-infected mice and reduced the viral load in TG up to four orders of magnitude. In the rabbits, the therapeutic efficacies of topical BAY 57-1293 and trifluridine were similar. Once-daily oral BAY 57-1293 was significantly more effective than valacyclovir and as effective as twice a day topical trifluridine. CONCLUSIONS: BAY 57-1293 may be more effective than valacyclovir, without the cytotoxicity or potential healing retardation seen with trifluridine. Oral BAY 57-1293 may be a substitute for eye drops as an effective treatment for herpetic keratitis and might be useful in treating stromal keratitis and iritis, as well as preventing recurrences of ocular herpes. FAU - Kaufman, Herbert E AU - Kaufman HE AD - Department of Ophthalmology, LSU Eye Center, Louisiana State University Health Sciences Center in New Orleans, New Orleans, LA, USA. hkaufm@lsuhsc.edu FAU - Varnell, Emily D AU - Varnell ED FAU - Gebhardt, Bryan M AU - Gebhardt BM FAU - Thompson, Hilary W AU - Thompson HW FAU - Atwal, Ephraim AU - Atwal E FAU - Rubsamen-Waigmann, Helga AU - Rubsamen-Waigmann H FAU - Kleymann, Gerald AU - Kleymann G LA - eng GR - R01 EY002672/EY/NEI NIH HHS/United States GR - R01EY002672/EY/NEI NIH HHS/United States GR - P30 EY002377/EY/NEI NIH HHS/United States GR - P30EY002377/EY/NEI NIH HHS/United States GR - P30 EY002377-29/EY/NEI NIH HHS/United States GR - R01 EY002672-29/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - J Ocul Pharmacol Ther JT - Journal of ocular pharmacology and therapeutics : the official journal of the Association for Ocular Pharmacology and Therapeutics JID - 9511091 RN - 0 (DNA, Viral) RN - 0 (Enzyme Inhibitors) RN - 0 (Pyridines) RN - 0 (Sulfonamides) RN - 0 (Thiazoles) RN - 0 (Viral Proteins) RN - 07HQ1TJ4JE (pritelivir) RN - EC 2.7.7.- (DNA Primase) RN - EC 3.1.- (helicase-primase, Human herpesvirus 1) RN - EC 3.6.4.- (DNA Helicases) SB - IM MH - Animals MH - DNA Helicases/*antagonists & inhibitors MH - DNA Primase/*antagonists & inhibitors MH - DNA, Viral/chemistry MH - Enzyme Inhibitors/*therapeutic use MH - Female MH - Heat Stress Disorders/virology MH - Herpesvirus 1, Human MH - Keratitis, Herpetic/*drug therapy MH - Mice MH - Mice, Inbred BALB C MH - Pyridines/*therapeutic use MH - Rabbits MH - Sulfonamides MH - Tears/virology MH - Thiazoles/*therapeutic use MH - Trigeminal Ganglion/virology MH - Viral Proteins/*antagonists & inhibitors MH - Virus Shedding/drug effects PMC - PMC2365309 MID - NIHMS38198 EDAT- 2008/01/19 09:00 MHDA- 2008/04/16 09:00 PMCR- 2008/05/02 CRDT- 2008/01/19 09:00 PHST- 2008/01/19 09:00 [pubmed] PHST- 2008/04/16 09:00 [medline] PHST- 2008/01/19 09:00 [entrez] PHST- 2008/05/02 00:00 [pmc-release] AID - 10.1089/jop.2007.0084 [doi] PST - ppublish SO - J Ocul Pharmacol Ther. 2008 Feb;24(1):34-42. doi: 10.1089/jop.2007.0084.