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      Retinal Pigment Epithelium Adhesion to Bruch’s Membrane Is Weakened by Hemicholinium-3 and Sodium Iodate

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          Abstract

          We have studied the effects of hemicholinium-3 (HC-3), an outer segment and retinal pigment epithelium (RPE) toxin and sodium iodate, an RPE toxin, on retinal and RPE adhesion in rabbits. During the first 3 days after intravitreal HC-3, the force required to peel retina from RPE fell to 50% of normal, and large patches of RPE separated from Bruch’s membrane and adhered to the peeled retina. The same phenomena were observed during the first 100 min after intravenous sodium iodate. Beyond 3 days after HC-3, and 100 min after sodium iodate, the peeling force became even weaker, but separation occurred at the subretinal space or by fragmentation of RPE cells. Acute RPE toxicity probably accounts for the initial weakening of the bond between RPE and Bruch’s membrane.

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          Author and article information

          Journal
          ORE
          Ophthalmic Res
          10.1159/issn.0030-3747
          Ophthalmic Research
          S. Karger AG
          0030-3747
          1423-0259
          1993
          1993
          11 December 2009
          : 25
          : 6
          : 386-392
          Affiliations
          Department of Ophthalmology, Stanford University School of Medicine, Stanford, Calif, USA
          Article
          267341 Ophthalmic Res 1993;25:386–392
          10.1159/000267341
          8309678
          © 1993 S. Karger AG, Basel

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          Page count
          Pages: 7
          Categories
          Original Paper

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