Summary
The gingival tissues of a male patient suffering from mannosidosis and presenting with gingival overgrowth have been studied. Routine histological assessment highlighted the presence of highly enlarged and vacuolated lymphocytes. The morphology of the connective tissues, fibroblasts and epithelium appeared normal. Immunohistochemical staining of the tissues for chondroitin sulfate proteoglycan demonstrated a normal distribution of this component throughout the connective tissues and intense staining associated with the vacuolated lymphocytes. In vitro studies indicated that fibroblasts isolated from the overgrown tissue did not differ from age and sex matched control fibroblasts with respect to proliferation, protein and proteoglycan synthesis. Taken together, these findings imply that the gingvial overgrowth noted in this patient was not due to a defect in the resident fibroblasts but rather reflected a secondary response of the tissues to impaired host defence mechanisms.
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Bartold, P.M. Biochemical and immunohistochemical studies on overgrown gingival tissues associated with mannosidosis. Virchows Archiv B Cell Pathol 62, 391–399 (1992). https://doi.org/10.1007/BF02899709
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DOI: https://doi.org/10.1007/BF02899709