摘要
AIMS To investigate the clinical significance of vas- cular endothelial growth factor (VEGF) expression in gastric carcinoma. METHODS The expression of VEGF in 128 gastric carcinomas was investigated by immunohistochemical staining with a polyclonal antibody against VEGF. Cor- relations between the expression of VEGF and various clinicopathologic factors and prognosis were studied. RESULTS The VEGF-rich expression rate was 64.1% in gastric carcinoma. VEGF-rich expression rate of patients with stage Ⅲ and stage Ⅳ disease was greater than that of patients with stage f disease (P <0.05). Significant differences of expression rate ex- isted with respect to growth pattern,serosal invasion and lymph node metastasis. The VEGF-rich rate was much higher in tumors with expanding growth pattern (71.8%) or serosal invasion (73.5%) than in those with infiltrative growth pattern (52.0%) or non-serosal invasion (53.3%) (P<0.025,respectively),and it was also significantly higher in patients with lymph node metastases (75.0%) than in those without such metastases (50.0%) (P<0.05). In addition,postop- erative survey of 86 patients who had been followed up for at least 5 years demonstrated that the 5-year sur- vival rate of patients with VEGF-rich tumors was signifi- cantly lower than that of patients with VEGF-poor tu- mors (P<0.05). CONCLUSIONS The expression of VEGF may be as- sociated with the invasion and metastasis and may also be a useful prognostic indicator of gastric carcinoma.
目的研究血管内皮生长因子(VEGF)在胃癌组织中表达的临床意义.方法应用抗 VEGF 多克隆抗体的免疫组织化学方法,观察 VEGF 在胃癌组织中的表达,分析 VEGF 表达与不同监床病理因素及预后之间关系.结果 128例胃癌 VEGF 阳性表达率为64.1%;Ⅲ、Ⅳ期病人 VEGF 阳性表达率明显高于Ⅰ期患者(P<0.05);VEGF 阳性表达率与肿瘤的生长方式、浸润深度及淋巴线转移关系之间有显著统计学意义,肿瘤呈浸润型生长(71.8%)或浸及浆膜者(73.5%)明显大于膨胀型生长(52.0%)或无浆膜浸润者(53.3%)(P<0.025),淋巴结转移阳性肿瘤(75.0%)明显大于无淋巴结转移者(50.0%)(P<0.05);此外,在86例术后随访患者中,VEGF 阳性表达肿瘤患者的术后5年生存率明显低于 VEGF 阴性表达肿瘤患者(P<0.05).
