Abstract:
:Ultrastructural study of mucosal eosinophils in a case of eosinophilic gastroenteritis involving stomach, duodenum and ileum showed an altered structure in ulcerated duodenal areas. The electron core density of eosinophil granules was inverted or disappeared and tubulovesicular structures occurred. Using immunogold staining with specific antibodies, major basic protein was detected diffusely in the matrix of eosinophil granules and out of the granules in tight association with extragranular membrane formations. In contrast, eosinophil cationic protein and eosinophil peroxidase were normally distributed in the granule matrix. When compared with the eosinophils in macroscopically normal duodenal mucosa in the same patient, these changes support a role for major basic protein in tissue damage in eosinophilic gastroenteritis. The diffusion of one granule protein from the granules to the exterior of the cells favours the view of a selective release of eosinophil mediators.
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Torpier G,Colombel JF,Mathieu-Chandelier C,Capron M,Dessaint JP,Cortot A,Paris JC,Capron Asubject
Has Abstractpub_date
1988-12-01 00:00:00pages
404-8issue
3eissn
0009-9104issn
1365-2249journal_volume
74pub_type
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journal_title:Clinical and experimental immunology
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更新日期:1987-12-01 00:00:00
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journal_title:Clinical and experimental immunology
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