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      Localised Fibre Cell Swelling Characteristic of Diabetic Cataract Can Be Induced in Normal Rat Lens Using the Chloride Channel Blocker 5-Nitro-2-(3-Phenylpropylamino) Benzoic Acid

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          Chloride channels are known to be involved in the regulated volume decrease that occurs when the rat lens is exposed to hypotonic challenge. We now report that chloride channel blockage makes the rat lens gain water under isotonic conditions, suggesting that chloride and water fluxes may also play an important role under resting conditions. Histological comparison of hypotonically and isotonically swollen rat lenses revealed a significant difference: in the former, fibre cells were swollen from the periphery inwards, while in the latter, swollen fibre cells were confined to a discrete cortical zone which was located 150–200 µm from the lens surface with cells on either side of this zone appearing unaffected. This localised fibre cell swelling is remarkable because of its similarity to the situation in the diabetic rat lens.

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          Author and article information

          Ophthalmic Res
          Ophthalmic Research
          S. Karger AG
          August 1999
          26 May 1999
          : 31
          : 4
          : 317-320
          aSchool of Biological Sciences, and bDepartment of Physiology, School of Medicine, University of Auckland, Auckland, New Zealand
          55553 Ophthalmic Res 1999;31:317–320
          © 1999 S. Karger AG, Basel

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