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  • Title: Light and electron microscopy of the cornea in systemic mucopolysaccharidosis type I-S (Scheie's syndrome).
    Author: Rummelt V, Meyer HJ, Naumann GO.
    Journal: Cornea; 1992 Jan; 11(1):86-92. PubMed ID: 1559353.
    Abstract:
    A 37-year-old man with coarse facies, stiff joints, corneal clouding, and normal intelligence sought medical attention. The diagnosis of a systemic mucopolysaccharidosis (MPS) type I-S (Scheie's syndrome) was confirmed by the presence of lysosomal alpha-L-iduronidase deficiency and excessive urinary dermatan and heparan sulfate excretion. The corneal button after perforating keratoplasty of the right eye demonstrated mucopolysaccharides consisting of numerous vacuoles containing fibrillogranular and partly membranebound material in epithelial cells, histiocytes, keratocytes, and extracellular matrix. Endothelial cells were distinctly free of storage material. The epithelial basement membrane showed frequent breaks, whereas Bowman's layer was only slightly attenuated. Irregular collagen fibrils and fibrous long-spacing collagen were noted near degenerating distended keratocytes. The Descemet's membrane was normal. The literature of six reported histopathological examinations of the cornea in Scheie's syndrome is reviewed. Detection of fibrous long-spacing collagen seems to be a typical abnormality of the cornea in MPS I-S.
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