Abstract
Histological localization of the elements, especially of Si, in the chronic inflammatory maxillary sinus mucosa, which was taken surgically from the patient of chronic sinusitis, was studied. Elementary analysis of the mucosa, which was frozen, dried and coated with C, was done using an energy dispersive X-ray microanalyzer (Kevex 7000D) fitted with a scanning electron microscope (S-550). Silicon was found to be localized on the fiber, especially on the collagenous fiber, of the subepithelial connective tissue layer, while it was found neither in the epithelial cell layer nor in the infiltrative cells and matrix of the subepithelial connective tissue. These findings have clarified that the higher concentration of Si in the sinusitis mucosa of fibrous type than in the mucosa of edematous type was resulted from Si located in the collagenous fibers of the mucosa. Si was considered to play an important role in construction and proliferation of pathological collagenous fibers in the chronic inflammatory mucous membrane.
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