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  • Title: [Degranulation of human eosinophils in nasal allergy].
    Author: Watanabe K, Kiuna C, Misu T.
    Journal: Arerugi; 1999 May; 48(5):500-6. PubMed ID: 10390897.
    Abstract:
    The localization of eosinophil peroxidase (EPO), one of the basic proteins in eosinophil grunules, was studied in the nasal mucosae of nasal allergy patients. EPO in granules was initially induced into the cytoplasm via finetubules and then diffused into the extracellular space through micro-destruction of the plasma membrane. When the eosinophil lysis was advanced a large amount of granule countents was released into the extracellular space. The total number of eosinophils which migrated to epithelial region was not significantly different between in the damaged epithelium and in the intact one. But the rate of cytolytic eosinophils was significantly higher in the area of severely shedded epithelium than in the area of intact epithelium. In conclusion, the degranulation of eosinopils in nasal allergy was induced by lysis rather than by exocytosis and many cytolytic eosinophils caused epithelial shedding.
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