title: [Changes in the positive P.A.S. reaction of the cytoplasm of giant cells. Role of etiologic factors and the giant cell reaction].
abstract: The search for alpha-amylase resistant, P.A.S. positive cytoplasm has been carried out in 206 giant cell lesions with or without specific inflammatory features and with neogenetic and degenerative plasmodia. It allowed to distinguish: --P.A.S. positivity in inflammatory cells of any nature, however with quantitative variations linked to etiologic factors (pathogen agent and disposition), to site, to the age of the plasmodia, and particularly, with negativation of the reaction in ancient lesions;--negativity of the neogenetic and degenerative plasmodia, save the giant cell articular lesions. Cells containing glycogen particularly (muscular tumors, renal or placental) are easily identified thanks to enzymatic digestion tests. Variations observed in the inflammatory cells seem to be the reflect of an active metabolism bringing about resorption phenomena but probably also immunization processes acting at the level of the cellular microenvironment.
mesh_terms: D003593:Cytoplasm / Q000378:metabolism*; D006801:Humans; D007249:Inflammation / Q000378:metabolism / Q000473:pathology*; D008107:Liver Diseases / Q000378:metabolism / Q000473:pathology*; D009135:Muscular Diseases / Q000378:metabolism / Q000473:pathology*; D009369:Neoplasms / Q000378:metabolism / Q000473:pathology*; D013194:Staining and Labeling
vernacular_title: Variations du caractère A.P.S. positif du cytoplasme des cellules geantes. Rôle des facteurs étiologiques et de la réaction giganto-cellulaire