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  • Title: Prostaglandin E2 Levels of Aqueous and Vitreous Humor in Ketorolac 0.4% and Nepafenac 0.1% Administered Healthy Rabbits.
    Author: Acar U, Acar DE, Tanriverdi C, Acar M, Ozdemir O, Erikci A, Ornek F.
    Journal: Ocul Immunol Inflamm; 2017 Jun; 25(3):323-327. PubMed ID: 26765265.
    Abstract:
    PURPOSE: To compare the lowering effects of ketorolac 0.4% and nepafenac 0.1% on aqueous and vitreous humor prostaglandin E2 (PGE2) levels in rabbits. METHODS: Ketorolac and nepafenac ophthalmic solutions were administered to the right eyes of 24 healthy rabbits after randomized division into two groups. The left eyes of these rabbits were considered as controls for the two groups. On the 4th day of the experiment, the samples were taken from the aqueous and vitreous humors of the rabbits bilaterally, and PGE2 levels were measured by an enzyme immune assay kit. RESULTS: Ketorolac and nepafenac achieved a statistically significant decrease (p<0.001, for each) in PGE2 levels in the aqueous (11.75 ± 6.15 and 14.75 ± 7.60 pg/mL, respectively) and the vitreous humor (6.58 ± 4.62 and 9.83 ± 4.55 pg/mL, respectively). CONCLUSIONS: Both ketorolac and nepafenac inhibited PGE2 levels in both the aqueous and vitreous humors of rabbits. Although PGE2-lowering effects were similar in the aqueous humor, nepafenac seemed to be more potent than ketorolac in the vitreous humor.
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