Helicobacter pylori infection in gastric xanthomas: Immunohistochemical analysis of 145 lesions

被引:35
作者
Hori, S
Tsutsumi, Y
机构
[1] TOKAI UNIV,SCH MED,DEPT PATHOL,ISEHARA,KANAGAWA 25911,JAPAN
[2] TOKAI UNIV HOSP,DIV DIAGNOST PATHOL,ISEHARA,KANAGAWA,JAPAN
关键词
gastric xanthoma; Helicobacter pylori; immunoelectron microscopy; immunohistochemistry;
D O I
10.1111/j.1440-1827.1996.tb03658.x
中图分类号
R36 [病理学];
学科分类号
100104 ;
摘要
A total of 145 paraffin-embedded biopsy samples of gastric xanthoma were analyzed for the localization of Helicobacter pylori (HP) antigens. By the indirect immunoperoxidase method using a polyclonal antibody, HP infection was identified on the surface of foveolar cells in 69 (48%) samples. In 38 (55%) of the 69 lesions, the HP antigens were demonstrated in the cytoplasm of xanthoma cells clustered in the actively inflamed lamina propria mucosae. Among the remaining 76 xanthoma lesions negative for HP infection on the epithelial surface, only eight (11%) showed the existence of HP antigens in the foamy histiocytes, and 39 (51%) revealed mild inflammatory change. Monoclonal antibody study using 75 specimens also gave a comparable result. Pre-embedding immune-electron microscopy using paraffin sections revealed positively labeled rod-shaped bacteria both on the epithelial surface and in the phagosome of the xanthoma cells. These findings strongly suggest that some of the xanthoma lesions are provoked by lamina proprial invasion of surface-infected HP.
引用
收藏
页码:589 / 593
页数:5
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