title: Close correlation between increased sialyl-Lewisx expression and metastasis in human gastric carcinoma.
abstract: Expression of sialyl-Lewisx (sLex) antigen was studied immunohistochemically in 110 resected human gastric carcinomas using an anti-sLex monoclonal antibody. Lymph node, liver, and peritoneal metastases were clearly more prevalent in tumors expressing high levels of sLex than in those with no or low-level sLex expression. No correlation was found between sLex expression and histologic grade or histologic type of the Lauren classification. Among the tumors with lymph node metastasis, 44% expressed high levels of sLex in both the primary tumor and involved lymph nodes, and 14% of the metastatic lesions demonstrated increased sLex expression. The 5-year survival rate of the patients undergoing complete (R0) gastric resections was 60% in the sLex high-expression group, which was significantly lower than that of the sLex low-expression group (81%) and of the no-expression group (87%) (p < 0.05). These results suggest that high-level sLex expression is related to both an increased risk of metastasis and poor prognosis in gastric cancer patients.
authors.affiliation: First Department of Surgery, Sapporo Medical University School of Medicine, South 1, West 16, Chuo-ku, Sapporo 060, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Ura
authors.forename: R
authors.initials: R
authors.lastname: Denno
authors.forename: K
authors.initials: K
authors.lastname: Hirata
authors.forename: K
authors.initials: K
authors.lastname: Yamaguchi
authors.forename: T
authors.initials: T
authors.lastname: Yasoshima
authors.forename: T
authors.initials: T
authors.lastname: Shishido
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000032:analysis*; D005260:Female; D005743:Gastrectomy / Q000401:mortality; D006801:Humans; D007150:Immunohistochemistry; D008113:Liver Neoplasms / Q000556:secondary*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009844:Oligosaccharides / Q000032:analysis*; D010534:Peritoneal Neoplasms / Q000556:secondary*; D011379:Prognosis; D012306:Risk; D000080506:Sialyl Lewis X Antigen; D013274:Stomach Neoplasms / Q000473:pathology* / Q000601:surgery; D015996:Survival Rate
chemical_list: D014408:Biomarkers, Tumor; D009844:Oligosaccharides; D000080506:Sialyl Lewis X Antigen