title: Immunohistochemical expression of sialyl Tn, sialyl Lewis a, sialyl Lewis a-b-, and sialyl Lewis x in primary tumor and metastatic lymph nodes in human gastric cancer.
abstract: Sialyl Lewis Tn(STN), sialyl Lewis a(CA-9-9), sialyl Lewis a-b-(DU-PAN-2), and sialyl Lewis x(SLX) antigens were immunohistochemically examined in the primary tumor and metastatic lymph nodes in 35 patients with advanced gastric cancer. STN, CA-19-9, DU-PAN-2, and SLX were expressed in 91%, 60%, 31%, and 60% in the primary lesion, and 77%, 54%, 22%, and 51% in the metastatic lesion, respectively. In only four cases, (11%) were all four antigens expressed in both the primary and metastatic lesions. Three antigens were expressed in 49% of primary lesions and in 20% of metastatic lesions. Compared with expression in primary lesions, increased, unchanged and decreased expressions in metastatic lesions were noted in 23%, 37%, and 40% for STN, 20%, 40%, and 40% for CA-19-9, 17%, 57%, and 26% for DU-PAN-2, and 26%, 31%, and 43% for SLX, respectively. These results indicate that the tumor in the primary and metastatic lesions has a heterogeneous expression of sialyl-related antigens. However, metastases cannot be predicted based upon the expression of these antigens.
authors.affiliation: Department of Surgery II, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Ikeda
authors.forename: M
authors.initials: M
authors.lastname: Mori
authors.forename: K
authors.initials: K
authors.lastname: Kajiyama
authors.forename: Y
authors.initials: Y
authors.lastname: Haraguchi
authors.forename: O
authors.initials: O
authors.lastname: Sasaki
authors.forename: K
authors.initials: K
authors.lastname: Sugimachi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000911:Antibodies, Monoclonal; D000951:Antigens, Neoplasm / Q000378:metabolism*; D015295:Antigens, Tumor-Associated, Carbohydrate / Q000378:metabolism*; D014408:Biomarkers, Tumor / Q000378:metabolism*; D018395:CA-19-9 Antigen; D005260:Female; D005732:Gangliosides / Q000378:metabolism*; D006801:Humans; D007150:Immunohistochemistry; D007983:Lewis Blood Group Antigens / Q000378:metabolism*; D016256:Lewis X Antigen / Q000378:metabolism*; D008198:Lymph Nodes / Q000378:metabolism*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009844:Oligosaccharides / Q000378:metabolism; D000080506:Sialyl Lewis X Antigen; D013274:Stomach Neoplasms / Q000378:metabolism*
chemical_list: D000911:Antibodies, Monoclonal; D000951:Antigens, Neoplasm; D015295:Antigens, Tumor-Associated, Carbohydrate; D014408:Biomarkers, Tumor; D018395:CA-19-9 Antigen; C042317:DU-PAN-2 antigen, human; D005732:Gangliosides; D007983:Lewis Blood Group Antigens; D016256:Lewis X Antigen; D009844:Oligosaccharides; D000080506:Sialyl Lewis X Antigen; C055491:sialosyl-Tn antigen; C064564:sialyl Le(a) ganglioside