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  • Title: Expression of inducible nitric oxide synthase (iNOS/NOS II) in the hydropic cochlea of guinea pigs.
    Author: Michel O, Hess A, Su J, Bloch W, Stennert E, Addicks K.
    Journal: Hear Res; 2000 May; 143(1-2):23-8. PubMed ID: 10771181.
    Abstract:
    Immunohistochemical investigations of the guinea pig cochlea, using a specific antibody to the inducible isoform of NO synthase (iNOS/NOS II), have been performed 3 weeks after closure of the right endolymphatic duct (n=7). Endolymphatic hydrops, the morphological substrate of Meniere's disease, became evident by distension of the Reissner's membrane. iNOS expression could be noted in endothelium, spiral ganglion cells, in nerve fibers, in supporting cells of the organ of Corti and cells of the spiral ligament. Temporal bones of non-operated controls (n=6) as well as of sham-operated animals (n=3) did not show structures positive to iNOS. These findings imply that iNOS-generated NO could be involved in the pathophysiology of cochlear dysfunction in Meniere's disease.
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