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Tumour-associated cell-surface glycoprotein is associated with tumour progression in gastric cancer. We investigated the biological significance of tumour-associated cell-surface glycoprotein, determined by the binding of Helix pomatia agglutinin (HPA), with regard to survival time and to the malignant potential of cancer cells in serosally invasive gastric cancer in 119 patients. HPA was positively stained in 75 of 119 patients (63.0%) with gastric cancer with serosal invasion. In patients with HPA-positive tissue, the tumour was larger than in HPA-negative cases and was frequently located in the middle third of the stomach. The incidence of lymph node metastasis was higher than in patients with HPA-negative tissue. There were no differences between the cases staining negatively and positively with HPA with respect to the other factors examined. Gastric cancer tissues with HPA-positive staining revealed a higher positive rate of abnormal p53 staining and a higher concentration of proliferating cell nuclear antigen (PCNA) labelling. The survival time of the patients with HPA positive staining was shorter than for those whose tissues were HPA negative. Thus, tumour-associated cell-surface glycoprotein is apparently closely related to the malignant potential of serosally invasive gastric cancer.

A tumour-associated cell-surface glycoprotein accompanying p53 overexpression and higher growth potential for gastric cancer