Maho Shibata

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PURPOSE To investigate the hypoxia-induced death of rat retinal neurons and to determine whether P2X(7) activation is involved in this type of neuronal death. METHODS Cultured retinal neurons from fetal rats were used. The effects and time course of various degrees of hypoxia (1%-5% O(2)) in the death of retinal neurons, were examined. The effects of(More)
PURPOSE To determine whether an impairment of the autoregulatory mechanism of blood flow in the optic nerve head (ONH) is present in diabetic rabbits and whether the impairment results from the uncoupling of gap junctions. METHODS Experiments were performed on six alloxan-induced diabetic rabbits and six healthy control animals. In a test of the integrity(More)
PURPOSE This paper compares the outcomes of the Ex-PRESS(®) Glaucoma Filtration Device (Alcon, Fort Worth, TX) implant observed in Japanese patients for 1 year with those of patients undergoing trabeculectomy. PATIENTS AND METHODS The subjects comprised ten eyes of ten cases with open-angle glaucoma for which filtration surgery using Ex-PRESS (P-50) was(More)
PURPOSE To investigate the involvement of glial cells in the autoregulation of optic nerve head (ONH) blood flow in response to elevated intraocular pressure (IOP). METHODS Rabbit eyes were treated with an intravitreal injection of l-2-aminoadipic acid (LAA), a gliotoxic compound. Twenty-four hours after the injection IOP was artificially elevated from a(More)
PURPOSE To investigate the effects of fasudil, a Rho-associated coiled coil-forming protein kinase (ROCK) inhibitor, on normal or impaired optic nerve head (ONH) blood flow in a rabbit model. METHODS ONH blood flow was measured by laser speckle flowgraphy. Changes in ONH blood flow were examined during a continuous intravenous infusion of fasudil with and(More)
PURPOSE To investigate the effects of gelatin hydrogel (GH) containing a chymase inhibitor (CI) on intraocular pressure (IOP) and conjunctival scarring in a canine model of glaucoma surgery. METHODS Glaucoma surgery models were made in beagles. As the first experiment, GH was implanted. IOP was measured for 4 weeks, followed by histologic evaluation. As(More)
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