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  • Title: Changes in immunostaining of cochleas with experimentally induced endolymphatic hydrops.
    Author: Ichimiya I, Adams JC, Kimura RS.
    Journal: Ann Otol Rhinol Laryngol; 1994 Jun; 103(6):457-68. PubMed ID: 8203812.
    Abstract:
    Cochleas with experimentally induced endolymphatic hydrops were immunostained for Na+,K(+)-ATPase, intracellular Ca(++)-ATPase, carbonic anhydrase, aldehyde dehydrogenase, calcium-binding proteins, vimentin, and the gap junction protein, connexin 26. No changes in immunostaining of hydropic ears were observed 1 week after blockage of the endolymphatic duct. Two weeks to 1 month after the operation, immunostaining of type I fibrocytes in the spiral ligament, which are positive for all but Na+,K(+)-ATPase, was slightly decreased on the operated side. These changes became more pronounced 3 months after the operation. However, staining for Na+,K(+)-ATPase of the stria vascularis and of type II fibrocytes of the spiral ligament was not reduced until 6 months postoperative. The reduction of enzymes and other cell constituents that may be involved in ion balance of cochlear fluids indicates that cells in the spiral ligament play an important role in cochlear homeostasis and that they merit further study in animal and human otopathology.
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