Abstract:
PURPOSE:The purpose of this study was to determine whether a better IOP reduction can be observed in conscious, normotensive monkeys treated with ONO-9054, a novel dual EP3 and FP receptor agonist, compared with prostaglandin F2α analogs. METHODS:The binding affinities and agonistic activities of ONO-AG-367, a carboxylic acid of ONO-9054, to prostanoid receptors were assessed. The IOP-lowering effect of ONO-9054 in monkeys was analyzed after a single (0.3, 3, or 30 μg/mL) or 7-day repeated (30 μg/mL, every day) topical ocular administration. Ophthalmologic and histopathologic evaluations of the eye were performed after 4-week ocular administration of ONO-9054 (30 μg/mL, twice a day) in monkeys. RESULTS:The ONO-AG-367 exhibited high affinity for both EP3 and FP receptors and potent agonist activity, with EC50 values of 28.6 nM for the EP3 receptor and 22.3 nM for the FP receptor. Single and repeated topical ocular administration of ONO-9054 caused IOP reductions in normotensive monkeys. The maximum IOP reductions on day 7 observed with ONO-9054 (7.3 ± 0.8 mm Hg) were significantly greater than those observed with latanoprost (50 μg/mL, 4.9 ± 0.4 mm Hg) or travoprost (40 μg/mL, 5.1 ± 0.6 mm Hg). In ophthalmologic and histopathologic evaluations, slight and transient mydriasis was occasionally observed and no histopathologic lesions attributable to ONO-9054 were noted. CONCLUSIONS:A more profound and longer-lasting reduction in IOP in normotensive monkeys can be observed with ONO-9054, which simultaneously stimulates both EP3 and FP receptors, compared with prostaglandin analogs.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Yamane S,Karakawa T,Nakayama S,Nagai K,Moriyuki K,Neki S,Suto F,Kambe T,Hirota Y,Kawabata Kdoi
10.1167/iovs.14-16181subject
Has Abstractpub_date
2015-04-01 00:00:00pages
2547-52issue
4eissn
0146-0404issn
1552-5783pii
iovs.14-16181journal_volume
56pub_type
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journal_title:Investigative ophthalmology & visual science
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