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.
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
Dilaghi, E.
Lahner, E.
论文数: 0引用数: 0
h-index: 0
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
Lahner, E.
Annibale, B.
论文数: 0引用数: 0
h-index: 0
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
Annibale, B.
Esposito, G.
论文数: 0引用数: 0
h-index: 0
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
Dilaghi, E.
Lahner, E.
论文数: 0引用数: 0
h-index: 0
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
Lahner, E.
Annibale, B.
论文数: 0引用数: 0
h-index: 0
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy
Annibale, B.
Esposito, G.
论文数: 0引用数: 0
h-index: 0
机构:
Sapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, ItalySapienza Univ Rome, Sant Andrea Hosp, Dept Med Surg Sci & Translat Med, Via Grottarossa 1035, I-00189 Rome, Italy