IOVS Journal of Bacteriology
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(Investigative Ophthalmology and Visual Science. 2001;42:158-162.)
© 2001 by The Association for Research in Vision and Ophthalmology, Inc.

Effects of Diclofenac or Ketorolac on the Inhibitory Activity of Cidofovir in the Ad5/NZW Rabbit Model

Eric G. Romanowski and Y. Jerold Gordon

From the Department of Ophthalmology, University of Pittsburgh School of Medicine, Pennsylvania.

PURPOSE. The goal of this study was to determine the effects of concurrent therapy with nonsteroidal anti-inflammatory drugs (NSAIDs) on the antiviral activity of cidofovir on adenovirus replication and the formation of subepithelial infiltrates in the Ad5/New Zealand White rabbit ocular model.

METHODS. According to two protocols, 20 rabbits were inoculated in both eyes with Ad5 topically to study adenovirus replication, and 20 rabbits were inoculated in both eyes topically and intrastromally to study the formation of subepithelial infiltrates. Animals were randomized to four masked treatment groups: group I, 0.5% cidofovir + artificial tears; group II, 0.5% cidofovir + 0.5% ketorolac tromethamine; group III, 0.5% cidofovir + 0.1% diclofenac sodium; and group IV, control + artificial tears. Cidofovir and control were administered to both eyes twice daily for 7 days, and artificial tears, ketorolac, and diclofenac four times daily for 14 days. Eyes were cultured on days 0, 1, 3, 4, 5, 7, 9, 11, and 14.

RESULTS. Compared with the control group, all cidofovir-treated groups demonstrated significant antiviral effects on adenovirus replication. There were no differences in adenovirus replication among the cidofovir-treated groups (I, II, and III), nor were there any differences among all groups (I–IV) in the formation of subepithelial infiltrates.

CONCLUSIONS. Concurrent treatment of ketorolac or diclofenac with cidofovir did not diminish its antiviral inhibitory activity on adenovirus replication, nor did it prevent the formation of subepithelial infiltrates in the rabbit model.






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Copyright © 2001 by the Association for Research in Vision and Ophthalmology