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| 1 | Expression of E-cadherin and β-catenin in gastric carcinoma and its correlation with the clinicopathological features and patient survival显示文摘AIM:The E-cadherin-catedin complex is important for cell-cell adhesion of epithelial cells.Impairment of one or more components of this comples is associated with poor differentiation and increased invasiveness of carcinomas,We evaluated the expression pattern of E-cadherin and β-catenin in gastric carcinoma and dysplasia and analyzed their relationship with tumor clinicopathological featrres and patient survival. | Yong-NingZhou Cai-PuXu BiaoHan MinLi LiangQiao Dian-chunFang J | 2002 | World Journal of Gastroenterology2002，8，6： | 41 |
| 2 | Clinicopathological significance of heparanase and basic fibroblast growth factor expression in human esophageal cancer显示文摘AIM: Human heparanase is an endo-D-glucuronidase that degrades heparan sulfate/heparin and has been implicated in a variety of biological processes. The objective was to investigate the expression of heparanase (Hps) and basic fibroblast growth factor (bFGF) and their relationship to neoangiogenesis and metastasis of human esophageal carcinoma.METHODS: Seventy-nine patients who had undergone esophageal resection for esophageal carcinoma without preoperative treatment were included in the present study. Immunohistochemistry was used to study the expression of Hps, bFGF and microvessel density (MVD) in 79 cases of esoph-ageal carcinoma. bFGF and Hps were quantitatively detected with immunohistochemistry in 79 cases of human esopha-geal carcinoma and 19 cases of adjacent normal human esophageal carcinoma. Cd34 was used to explore the MVD as a marker of endothelial cells. RESULTS: Hps and bFGF expression in tumor tissue, being remarkably higher than that in normal esophageal tissue, were significantly correlated with clinicopathological features (depth of invasion, lymph-node metastasis and TNM stage) and MVD.CONCLUSION: The results of this study suggest that thecoexpression of Hps and bFGF plays a key role in angiogenesis, invasion and metastasis of esophageal carcinoma. Hps and bFGF may serve as a predictor of progression in esophageal carcinoma. The expression of heparanase in esophageal carcinoma enhances growth, invasion, and angiogenesis of the tumor, and bFGF seemsto be a potent antigenic factor for esophageal carcinoma. | BiaoHan JianLiu Min-JieMa LinZhao | 2005 | World Journal of Gastroenterology2005，11，14： | 10 |
| 3 | α-catenin expression is decreased in patients with gastric carcinoma显示文摘AIM: To assess the expression of α-catenin in gastric carcinoma and to determine the role of α-catenin expression in gastric carcinogenesis.METHODS: α-catenin expression was assessed by semi quantitative reverse transcriptase-polymerase chain reaction and immunohistochemical staining in 49 gastric carcinomas,26 adjacent non-cancerous mucosae, and gastric biopsy specimens from 11 healthy controls.RESULTS: mRNA levels of α-catenin were reduced or absent in 34 of 49 (69%) gastric carcinoma tissues and in 5 of 26 (19%) tumor-free gastric mucosae of carcinomapatients, respectively. Of the carcinoma samples with altered α-catenin mRNA levels, α-catenin expression was negative in 20 and decreased in 14 cases. Up to 69% of tumors were stained abnormally for α-catenin. Of the 34 cases whose mRNA expression of α-catenin was reduced, 32 (94%) showed abnormal immunostaining patterns, while only 2 showed a normal α-catenin expression. The frequency of reduced expression of α-catenin mRNA was 14% in well-differentiated carcinomas, higher than that in poorlydifferentiated carcinomas (86%). A significant correlation was not shown between α-catenin expression and bothdepth of invasion and lymph node metastasis. Moreover, there was no statistical difference between loss or down-regulation of α-catenin mRNA and Helicobacter pylori ( H pylori) infection.CONCLUSION: Downregulation of α-catenin expressionis common in gastric carcinoma, and α-catenin expression may be used as a differentiation marker. Downregulation of α-catenin expression may be an early event in tumorigenesis. Reduced α-catenin expression is not correlated with H pylori infection. | Yong-NingZhou Cai-PuXu YuChen BiaoHan Shi-MingYang Dian-ChunFang | 2005 | World Journal of Gastroenterology2005，11，22： | 1 |
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