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环氧合酶—2、血管内皮细胞生长因子和血管内皮生长因子C在胃癌中的表达及意义

2015-08-06屈海燕乔文

中国医药导报 2015年17期
关键词:胃癌意义差异

屈海燕 乔文

[摘要] 目的 探讨环氧合酶-2(COX-2)、血管内皮细胞生长因子(VEGF)、血管内皮生长因子C(VEGF-C)蛋白在胃癌组织中的表达及意义。 方法 采用免疫组化SP法检测COX-2、VEGF、VEGF-C蛋白在70例胃癌标本和30例正常胃黏膜中的表达情况。 结果COX-2、VEGF、VEGF-C蛋白在胃癌细胞胞质中呈棕黄色表达,表达率分别为71.4%、62.9%、55.7%,在正常胃黏膜中的表达率为13.3%、6.7%、16.7%。不同年龄、性别、肿瘤部位、肿瘤大小的COX-2、VEGF、VEGF-C蛋白阳性表达率差异无统计学意义(P > 0.05);不同肿瘤TNM分期、淋巴转移的COX-2、VEGF、VEGF-C蛋白阳性表达率差异有统计学意义(P < 0.05);不同病理分级的COX-2蛋白阳性表达率差异无统计学意义(P > 0.05),而VEGF与VEGF-C蛋白的阳性表达率差异有统计学意义(P < 0.05)。COX-2与VEGF、VEGF-C蛋白,VEGF与VEGF-C蛋白在胃癌组织中的表达呈正相关(P < 0.05)。 结论 COX-2、VEGF、VEGF-C蛋白在胃癌组织中高表达,COX-2的表达与VEGF、VEGF-C的表达相关,COX-2可能通过调节VEGF、VEGF-C蛋白的表达从而调节胃癌的发生、发展过程。

[关键词] 胃癌;环氧合酶-2;血管内皮细胞生长因子;血管内皮生长因子C;免疫组织化学

[中图分类号] R734 [文献标识码] A [文章编号] 1673-7210(2015)06(b)-0016-04

Expression and significance of COX-2, VEGF and VEGF-C in gastric cancer

QU Haiyan1,2 QIAO Wen1

1.Department of Gastroenterology, the First Affiliated Hospital of Medical College of Xi'an Jiaotong University, Shaanxi Province, Xi'an 710061, China; 2.Department of Gastroenterology, Hospital of Traditional Chinese Medicine in Yulin City, Shaanxi Province, Yulin 719000, China

[Abstract] Objective To study the protein expression and significance of cyclooxygenase-2 (COX-2), vascular endothelial growth factor (VEGF) and vascular endothelial growth factor C (VEGF-C) in gastric cancer. Methods The expression levels of COX-2, VEGF and VEGF-C were detected by using immunohistochemical SP method in 70 cases of gastric cancer and 30 cases of normal gastric mucosa. Results The positive expression rates of COX-2, VEGF and VEGF-C in gastric cancer were 71.4%, 62.9% and 55.7%; and were 13.3%, 6.7% and 16.7% in normal gastric mucosa. There were no statistical significant differences in positive expression rates of COX-2, VEGF and VEGF-C among patients with different age, sex, tumor site and size (P > 0.05). There were statistical significant differences among patients with different TNM stages and lymph nodes (P < 0.05). There were no statistical significant difference in positive expression rate of COX-2 among patients with different pathological grading (P > 0.05); while there were statistical significant differences in VEGF and VEGF-C (P < 0.05). There were positive correlation between the expression of COX-2 and VEGF, VEGF-C; VEGF and VEGF-C in gastric cancer (P < 0.05). Conclusion There are over-expressions of COX-2, VEGF and VEGF-C in gastric cancer tissues. The expression of COX-2 and VEGF, VEGF-C is correlated. COX-2 may regulate the gastric cancer occurrence and progress through regulating the protein expression of VEGF and VEGF-C.

[Key words] Gastric cancer; COX-2; VEGF; VEGF-C; Immunohistochemistry

胃癌是危害人类健康的常见恶性肿瘤。国际流行病学资料显示[1],20世纪50~90年代,全球胃癌的发生率及死亡率呈现平稳降低的总态势,但受人口老龄化、城市化及工业化等诸多因素影响,世界范围内每年新病例的绝对数量是增加的。然而近年来,进行我国恶性肿瘤死亡率的国际化比较发现,我国胃癌世界标化死亡率男性为30.8/10万,女性为13.8/10万,均高于世界、发达及发展中国家的平均水平,且粗死亡率表现出年龄结构性上升、年龄别死亡率推后等趋势[2]。本实验利用免疫组化SP染色法检测环氧合酶-2(COX-2)、血管内皮细胞生长因子(VEGF)、血管内皮生长因子C(VEGF-C)蛋白在70例胃癌标本和30例正常胃黏膜中的表达情况,并结合年龄、性别、肿瘤部位、病理分级、临床分期进一步探讨3种蛋白间的关系。

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