Waardenburg Syndrome: Histological Observations of Cats and Dog with Iris Versicolor and Pigmentary Defect of Eyeground

DOI
  • KATAYAMA Yasuto
    Department of Neurochemistry Institute for Neurobiology Okayama University Medical School

Bibliographic Information

Other Title
  • 虹彩異色症，眼底色素欠損症などを伴なうネコ，イヌに観察されたWaardenburg Syndromeについて

Description

<p>The inner ear and eye of cats and dog showing symptoms of the Waardenburg syndrome were studied histologically.</p><p>No histological abnormality was observed in the external, middle, and internal ear of white cats with blue irides without deafness. Structural disorders were observed in the labyrinthus membrane of the internal ear of a deaf white dog, but no histological abnormality was observed in the external and middle ear. Precipitation of white crystals was observed on the surface of the tectorial membrane, and these were identified as calcium by X-ray elementary analysis. Cochlear nerve fibers were present, but were not observed in and beyond the tunnel. No inner or outer hair cells were found in the organ of Corti.</p><p>An electronmicroscopic observation was made of the retina, choroidea, and sclera of the deaf white dog. Histological abnormalities were not present in the pigment epithelium, layer of rods and cones, nerve cells, or sclera. Deletions of pigment granules and tapetum were found in the choroidea at the iris versicolor side.</p><p>The iris was not studied electronmicroscopically nor histologically.</p>

Journal

  • Animal Eye Research

    Animal Eye Research 4 (0), 11-16, 1985

    Japanese Society of Comparative and Veterinary Ophthalmology

Details 詳細情報について

  • CRID
    1391975831222654464
  • NII Article ID
    130007960120
  • DOI
    10.11254/jscvo.4.11
  • ISSN
    21858446
    02867486
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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