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  • Title: REDUCTION OF VITREOUS PROSTAGLANDIN E2 LEVELS AFTER TOPICAL ADMINISTRATION OF INDOMETHACIN 0.5%, BROMFENAC 0.09%, AND NEPAFENAC 0.1.
    Author: Russo A, Morescalchi F, Vezzoli S, Bernini M, Turano R, Costagliola C, De Ferrari F, Semeraro F.
    Journal: Retina; 2016 Jun; 36(6):1227-31. PubMed ID: 26562569.
    Abstract:
    PURPOSE: To assess vitreous concentrations of nonsteroidal anti-inflammatory drugs (NSAIDs) and prostaglandin E2 (PGE2) in patients treated with NSAIDs before vitrectomy for macular pucker. METHODS: A prospective, investigator-masked, randomized study was performed in 64 patients scheduled to undergo vitrectomy. The patients were randomized 1:1:1:1 to receive indomethacin 0.5%, bromfenac 0.09%, nepafenac 0.1%, or placebo three times a day. NSAIDs and PGE2 levels were evaluated in vitreous samples collected at the beginning of surgery. RESULTS: Mean (SD) vitreous concentrations of the study drugs were 503.13 (241.1) pg/mL for indomethacin, 302.5 (91.03) pg/mL for bromfenac, and 284.38 (128.2) pg/mL for nepafenac. Mean (SD) vitreous PGE2 levels were 247.9 (140.9) pg/mL for indomethacin, 322.12 (228.1) pg/mL for bromfenac, 448.8 (261.1) pg/mL for nepafenac, and 1,133 (323.9) pg/mL for placebo. All three NSAIDs reduced vitreous PGE2 levels to a statistically significant extent, without a significant difference among them. CONCLUSION: All assessed NSAIDs penetrated the vitreous and lowered basal PGE2 levels. A greater penetration was associated with pseudophakic eyes. The important inhibition of prostaglandins in the retina may have a clinical effect on the management of inflammatory retina diseases.
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