[Expression and clinical significance of type-1 blood group antigens (Lea, Leb, CA19-9) in colorectal cancer--comparison with CEA].
The immunohistochemical analysis using the monoclonal antibodies to the blood group associated antigens Lea, Leb, CA19-9, and CEA, were performed on the tissues of the colorectal cancers, adenomas, normal mucosae and distant metastatic lesions, to determine whether the given degree of expression have some relation to the prognosis of patients or the potential of metastasis. We also analysed the serum levels of CA19-9 and CEA by RIA and compared them with the results of immunopathology. The more pronounced expression of CEA, Lea, Leb, and CA19-9 was observed in proportion to the progress of the cancer. In those cases of immunohistochemically Lea negative results in tissues, CA19-9 was not detected either in the serum level nor in tissue sections, therefore all cases of Lea negative results were eliminated in the evaluation of the clinical significance of CA19-9. Positive expression of CA19-9 in tissue of cancer indicated a poor prognosis of the patient and high risk of distant metastasis. Higher intensity of staining was observed in hepatic metastasis, in comparison with the primary lesion. These studies demonstrated that immunohistochemical analysis of CA19-9 and blood group antigens in useful tool for evaluation of prognosis and risk of metastasis in colorectal cancer.
Department of Surgery II, Nagoya University School of Medicine, Japan.
K
K
Kiriyama
T
T
Watanabe
J
J
Sakamoto
K
K
Ito
S
S
Akiyama
M
M
Yamauchi
H
H
Takagi
D000328:Adult; D000368:Aged; D002272:Carcinoembryonic Antigen / Q000032:analysis; D015179:Colorectal Neoplasms / Q000276:immunology* / Q000401:mortality / Q000473:pathology; D005260:Female; D006801:Humans; D016256:Lewis X Antigen / Q000032:analysis*; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis; D009367:Neoplasm Staging; D011379:Prognosis
D002272:Carcinoembryonic Antigen; D016256:Lewis X Antigen