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Immunohistochemical Study on Adenoma, Cancer in Adenoma and Advanced Cancer of the Large Intestine Using Anti-CEA Monoclonal Antibody with Special Reference to Comparison with Histochemical Study of Human Colonic Mucin Yoshiro Kubota 1 , Tetsuichiro Muto 1 , Senichiro Agawa 1 , Toshio Sawada 1 , Yasuhiko Morioka 1 1The First Department of Surgery, Faculty of Medicine, University of Tokyo pp.183-189
Published Date 1985/2/25
DOI https://doi.org/10.11477/mf.1403109693

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  • Abstract
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 Cellular or tissue carcinoembryonic antigen (CFA) was investigated by immunohistochemical method using monoclonal antibody against CEA. Staining property of sialomucin was also detected by Culling's PAT/KOH/PAS (Periodic Acid-Thionin Schiff/Potassium Hydroxide/Periodic Acid-Schiff) method in which PAS-reactive vicinal diols on the side chain of sialic acid usually presented in carcinoma stained purple or blue.

 Ninety one adenomas, 7 cancers in adenoma and 12 advanced cancers in formalin-fixed and paraffin-embedded specimens were studied which were obtained by surgical operation and polypectomy. Cellular CEA was stained at apical free surface, intracytoplasmic and intraglandular portions of the adenoma and cancer.

 In order to demonstrate the biochemical characteristics in the adenoma-carcinoma sequence, the presence or absence of cellular CEA was compared with the histochemical property of sialomucin on the basis of morphological epithelial atypia. Twenty two of 74 adenomas with mild dysplasia (30%), 13 of 17 adenomas with moderate dysplasia (76%), 5 of 7 cancers in adenoma (72%) and 12 of 12 advanced cancers (100%) showed positive CEA as well as purple or blue stain for PKP method. These findings indicated that the presence of tissue CEA was well correlated with the presence of sialomucin having vicinal diols on the side chain of sialic acid, and this correlation seemed to become prominent with increasing grade of atypia.

 In addition, it was considered that biochemical markers such as CEA or sialomucin of the large intestine could be used for detecting high risk group of colorectal cancers in pre-malignant state.


Copyright © 1985, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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