Yoshitsugu Saishin

Learn More
Endostatin, a proteolytic fragment of collagen XVIII, is an endogenous inhibitor of tumor angiogenesis that also inhibits choroidal neovascularization. In this study, we assessed the effects of increased intraocular expression of endostatin on vascular endothelial growth factor (VEGF)-induced changes in the retina. After subretinal injection of a pair of(More)
Vascular endothelial growth factor (VEGF) plays a central role in the development of retinal neovascularization and diabetic macular edema. There is also evidence suggesting that VEGF is an important stimulator for choroidal neovascularization. In this study, we investigated the effect of a specific inhibitor of VEGF, VEGF-TRAP(R1R2), in models for these(More)
PURPOSE To evaluate the effect of vitrectomy on the concentration of vascular endothelial growth factor (VEGF) and the pharmacokinetics of intravitreally injected bevacizumab in the aqueous humor in cynomolgus macaques. METHODS Pars plana lensectomy and a standard three-port vitrectomy were performed in one eye each of six macaques. After a minimal(More)
PURPOSE Topical nepafenac readily penetrates the cornea and is metabolized to amfenac, a potent cyclooxygenase (COX)-1 and COX-2 inhibitor. In this study, we tested the effect of topical nepafenac in three murine models of ocular neovascularization (NV). METHODS A masked trial was performed to compare the topical effects of vehicle with one of several(More)
PURPOSE Oral administration of PKC412, a kinase inhibitor that blocks several isoforms of protein kinase C (PKC) and receptors for vascular endothelial growth factor (VEGF), platelet-derived growth factor, and stem cell factor, inhibits ocular neovascularization in a murine model. The purpose of this study was to determine whether sustained local delivery(More)
PURPOSE To evaluate serum and plasma vascular endothelial growth factor (VEGF) concentrations in neovascular age-related macular degeneration patients treated bimonthly with an intravitreal injection of aflibercept or ranibizumab. DESIGN Prospective, interventional case series. METHODS This study includes 17 eyes of 17 patients treated with 2 mg(More)
We report a case of unilateral acute idiopathic maculopathy (UAIM) with new clinical findings. A 34-year-old Japanese man had a neurosensory retinal detachment (~5 disk diameters) with yellowish-white exudates at the macula in the left eye (visual acuity (VA) 0.4). Fluorescein angiography (FA) showed early hypofluorescent spots and late pooling in the(More)
Human immunodeficiency viral (HIV) vectors mediate long-term transduction of many types of nondividing cells in vivo. Bovine immunodeficiency virus (BIV) is a lentivirus that shares many characteristics with HIV, but does not cause human disease. In this study, we investigated the potential of BIV vectors for ocular gene therapy. An enhanced green(More)
To report the efficacy of intravitreal chemotherapy for primary intraocular lymphoma (PIOL). Retrospective, noncomparative interventional case reports are presented for six patients (ten eyes; mean age, 58.8 years) with pathologically confirmed PIOL who participated in this study and were treated at our hospital with intravitreal injections of methotrexate(More)
Gene transfer provides a potential way to achieve sustained delivery of therapeutic proteins to the eye. Studies in rodents have suggested that periocular injection of adenoviral vectors containing expression cassettes for antiangiogenic proteins results in high intraocular levels of the proteins and suppression of choroidal neovascularization (CNV).(More)