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The Korean Journal of Pathology 2008;42(6): 365-372.
The Expression of Galectin-3 and Galectin-7 in Epithelial Dysplasia and Adenocarcinoma of the Stomach.
Ji Eun Kwak, Han Seong Kim, Mee Joo, Sun Hee Chang, Sang Hwa Shim, Hye Ran Lee
1Department of Pathology, College of Medicine, Inje University, Goyang, Korea. hs-kim@ilsanpaik.ac.kr
2Department of Hemato-Oncology, College of Medicine, Inje University, Goyang, Korea.
ABSTRACT
BACKGROUND: Galectin-3 and galectin-7 may play roles in human carcinogenesis. The aim of this study was to investigate the expressions of galectin-3 and galectin-7 in gastric dysplasia and adenocarcinoma. METHODS: We examined the expressions of galectin-3, galectin-7, and P53 in nonneoplastic gastric mucosa, gastric epithelial dysplasia (GED), and adenocarcinoma by immunohistochemistry. Twenty cases of nonneoplastic gastric mucosa, 20 cases of low grade GED, 20 cases of high grade GED, 40 cases of early gastric cancer (EGC), and 60 cases of advanced gastric cancer (AGC) are included for study. RESULTS: In the nonneoplastic tissue, only galectin-3 was expressed in the intestinal metaplasia. Galectin-7 was not stained in the nonneoplastic gastric mucosa. Galectin-3 was expressed in 3 cases of low grade GED (15%), 13 cases of high grade GED (65%), 2 cases of EGC (5%), and 5 cases of AGC (8%), respectively. Galectin-7 was expressed in 2 cases of low grade GED (10%), 3 cases of high grade GED (15%), and 4 cases of EGC (10%), respectively. However, it was not expressed in AGC. CONCLUSIONS: Based on our results, the expressions of galectin-3 and galectin-7 may contribute to the development of gastric epithelial dysplasia and early gastric cancer, rather than contributing to the progression of gastric adenocarcinoma.
Key Words: Galectins; Galectin 3; Adenoma; Adenocarcinoma; Stomach