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  • Title: H-7 increases trabecular facility and facility after ciliary muscle disinsertion in monkeys.
    Author: Tian B, Gabelt BT, Peterson JA, Kiland JA, Kaufman PL.
    Journal: Invest Ophthalmol Vis Sci; 1999 Jan; 40(1):239-42. PubMed ID: 9888449.
    Abstract:
    PURPOSE: To determine the effects of the serine-threonine kinase inhibitor H-7 on total outflow facility in iridectomized + ciliary muscle (CM)- disinserted, and on trabecular facility in normal, monkey eyes. METHODS: Total outflow facility was determined by two-level constant pressure perfusion of the anterior chamber. Trabecular outflow facility was determined from accumulation in blood of intracamerally infused radioiodinated albumin at two intraocular pressure levels. RESULTS: Three-hundred micromoles of intracameral H-7 doubled facility in iridectomized + CM- disinserted monkey eyes and contralateral iridectomized-only eyes. Four 5-microl drops of 400 mM H-7 applied topically followed 2 hours later by anterior chamber exchange for 10 minutes and intracameral infusion for 90 minutes with 100 microM H-7 increased trabecular and total outflow facility by 135%+/-29% and 105%+/-35% (n 5, P < 0.01, P < 0.05), respectively, compared with contralateral vehicle-treated eyes. CONCLUSIONS: H-7 increases trabecular outflow facility in monkeys by a mechanism independent of the CM, presumably acting directly on the trabecular meshwork.
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