摘要：
目的:探讨直肠癌根治术联合放疗对直肠癌患者的效果分析及对血管生成的影响.方法:2014-2015年间郑州市中心医院接诊的200例直肠癌患者作为研究对象,以随机数表法分为观察组(105例)和对照组(95例).对照组为单纯直肠癌根治术,观察组为直肠癌根治术联合常规放疗30 ～ 62 Gy.比较两组疗效及血清血管内皮生长因子C(VEGF-C)、前列腺素E2(PGE2)水平,记录患者直肠癌组织中微血管形态和微血管密度(MVD值)变化情况.结果:治疗后患者临床总有效率观察组为86.7％,对照组为70.5％(P＞0.05);两组患者2年生存率相近(P＞0.05),3年生存率观察组显著高于对照组(P＜0.05).两组患者血清VEGF-C、PGE2水平较治疗前均显著改善(P＜0.05),观察组患者血清VEGF-C、PGE2水平均明显低于对照组(P＜0.05).观察组和对照组癌组织中微血管形态明显不同,观察组微血管管径大小相近,管腔明显小于对照组,观察组MVD值为12.25±3.35,显著低于对照组的28.14±17.26(P＜0.05).结论:在直肠癌患者中使用直肠癌根治术联合放疗效果显著,可有效改善患者血清VEGF-C、PGE2水平,可使癌组织内微血管密度减少,管腔缩小,并且使直肠癌血管生成能力下降,提高患者生存率,值得推广与运用.%Objective To evaluate the clinical efficacy of radical surgery combined with irradiation in the treatment of rectal cancer and its effect on the angiogenesis and survival rate.Methods A total of 200 colorectal cancer patients admitted to Zhengzhou Central Hospital from March,2014 to March,2015 were recruited and divided into the observation group (n=105) and control group (n=95) by using random number table method.In the control group,radical surgery was performed,and radical surgery combined with irradiation was conducted in the observation group.The clinical efficacy,the serum levels of vascular endothelial growth factor-C (VEGF-C) and prostaglandin E2(PGE2) were statistically compared between the control and observation groups.The changes of the microvascular morphology and microvessel density (MVD) in the rectal cancer tissues were observed and recorded.The 3-year survival rate was calculated during postoperative follow-up.Results After corresponding treatment,the clinical overall response rate was 86.67％ in the observation group,and 70.53％ in the control group (P＞0.05).The 2-year survival rate did not significantly differ between two groups (P＞0.05).The 3-year survival rate in the observation group was significantly higher than that in the control group (P＜0.05).After treatment,the serum levels of VEGF-C and PGE2 were significantly improved in two groups (both P＜0.05).In the observation group,the serum levels of VEGF-C and PGE2 were significantly lower compared with those in the control group (both P＜0.05).The microvessel morphology in the cancer tissues remarkably differed between two groups.The microvessel diameter did not significantly differ,whereas the lumen diameter in the observation group was significantly smaller than that in the control group.The MVD in the observation group was 12.25±3.35,significantly lower than 28.14± 17.26 in the control group (P＜0.05).Conclusion Radical surgery combined with irradiation is an efficacious treatment of rectal cancer,which can effectively improve the serum levels of VEGF-C and PGE2,decrease the MVD,reduce the lumen diameter in the cancer tissues,lower the angiogenesis in rectal cancer and enhance the survival rate,which deserves widespread application in clinical practice.
