血管内皮生长因子C与胰腺癌根治术后复发的相关性研究

摘要

目的 探讨血管内皮生长因子C(VEGF-C)表达及多种临床病理因素在预测胰腺癌根治术后复发的价值.方法 应用Envision免疫组化法测定47例胰腺癌根治性切除标本中胰腺癌组织和自身胰腺正常组织中VEGF-C的表达.通过Kaplan-Meier生存分析和Cox风险比例模型,评估VEGF-C和各临床病理因素对胰腺癌根治术后复发的影响.结果 VEGF-C在胰腺癌组织中的表达比例及其在自身正常胰腺组织中的表达比例分别为29例(61.7%)、7例(14.9%),VEGF-C在胰腺癌组织中的表达比例明显高于其在自身正常胰腺组织中的表达(P=0.018).胰腺癌根治术后患者无病中位生存期为11.9个月,平均为(18.4±2.4)个月.1年、2年、3年累计无病生存率分别为46.8%、23.4%和14.4%.VEGF-C的表达与淋巴结转移有显著的相关性(P=0.036).单因素生存分析显示VEGF-C(P=0.020)、肿瘤直径(P=0.013)、年龄(P=0.057)、术后辅助化疗(P=0.017)与无病生存期明显相关.Cox回归多因素分析显示,VEGF-C(P=0.009),肿瘤直径(P=0.010)、术后辅助化疗(P=0.017)是胰腺癌根治术后患者无病生存期独立的预后因素.结论 VEGF-C在胰腺癌组织中表达明显增高,VEGF-C的表达与淋巴结转移有显著的相关性,VEGF-C可作为判断胰腺癌根治术后患者无病生存期的独立指标.%Objective To investigate the prognostic value of vascular endothelial growth factor C (VEGF-C) and clinicopathologic indexes in predicting recurrence following curative resection of pancreatic cancer. Methods The expressions of VEGF-C of 47 patients who underwent curative resection for curative pancreatic cancer resection were detected by Envision immunohistochemical methods. The effects of VEGF-C and clinicopathologic indexes on recurrence were assessed by the Kaplan-Meier and Cox proportional hazards model. Results The positive rates of VEGF-C were 61. 7% in = 29) and 14. 9%(n = 7), respectively, in pancreatic cancer and normal pancreatic tissues. The positive expression of VEGF-C in pancreatic carcinoma was obviously higher than the normal pancreatic tissues (P = 0. 018). The median disease-free survival time was 11. 9 months, the average disease-free survival time was 18. 4 + 2. 4 months, and the cumulative 1-year, 2-year and 3-year actuarial recurrence free survival rates were 46. 8%, 23. 4%, 14. 4%, respectively. There was a significant correlation between the VEGF-C expression and lymph node metastasis in pancreatic cancer (P = 0. 036). On Kaplan-Meier analysis, VEGF-C (P = 0. 020), tumor diameter (P = 0. 013), age (P = 0. 057) and adjuvant chemotherapy (P=0. 017) were associated with disease-free survival time. Multivariate analysis showed VEGF-C (P = 0. 009), tumor diameter (P = 0. 010) and adjuvant chemotherapy (P = 0. 017)were independent prognostic factors of disease-free survival after surgery for pancreatic cancer.Conclusion The expression of VEGF-C was higher in pancreatic cancer, and VEGF-C was correlated with lymph node metastasis. VEGF-C was the biomarker that independently predicted disease-free survival after surgery for pancreatic cancer.