机构地区:[1]重庆医科大学附属第二医院放射介入中心,400010
出 处:《中华肝脏病杂志》2012年第8期611-616,共6页Chinese Journal of Hepatology
基 金:重庆市教委课题(KJ070312)I重庆市卫生局课题(07-2-35)
摘 要:目的评价平阳霉素混合碘油经肿瘤滋养动脉化疗栓塞对兔VX2肝癌的肿瘤组织、滋养血管及血管新生的影响。方法将28只新西兰大白兔采用移植法建立兔VX2肝癌模型,并随机均分为单纯碘油组(A组)、平阳霉素组(B组)、平阳霉素加碘油组(C组)和等渗盐水对照组(D组)。模型均于建模后第14天行CT检查并计算肿瘤体积V1,然后对各组模型作相应处理:A组经肿瘤滋养动脉注入超液态碘油,B组经肿瘤滋养动脉注入平阳霉素,C组经肿瘤滋养动脉注入平阳霉素加超液态碘油,D组经肿瘤滋养动脉注入等渗盐水。7d后再行CT检查,计算肿瘤体积V2及肿瘤的生长率。处死实验兔进行病理学检查,计算血管内皮生长因子(VEGF)阳性表达率及微血管密度(MVD)。组间数据的比较用单因素方差分析,多组的两两间比较用K、D法,两组间比较用成组f检验,x,-J~不齐者用秩和检验;VEGF表达与MVD值比较用双变量相关分析;阳性表达率的比较用精确概率法。结果A、B、C、D组介入治疗前的肿瘤体积分别为(389.8±167.3)mm3、(404.1±184.9)mm3、(355.1±158.3)mm3和(378.1±189.0)nq/n3,差异无统计学意义(F=0.257,P〉0.05);术后肿瘤体积分别为(922.6±32.9)mm3、(665.9±99.9)mm3、(349.5±177.8)mm3和(1403.5±411.2)mm3,差异有统计学意义(F=26.23,P〈0.05),且B组和C组明显小于A组和D组;VEGF阳性表达率分别为57.1%、42.%、28.8%和100%,差异有统计学意义(F=8.407,P〈0.05)。D组残余肿瘤区MVD显著升高(36.4±3.7),与A组(22.4±3.9)、B组(18.7±2.6)和C组(14.1±2.3)比较,差异有统计学意义0值分别为6.89、10.34和13.49,P值均〈0.05),且C组明显低于其他各组(f值分别为4.89、3.53和13.49,P值均〈0.05)。VEGF阳性表达率�Objective To evaluate the changes induced in tumor tissue, the feeding artery, and neovascularization upon pingyangmycin-lipiodol emulsion treatment via transcatheter arterial chemoembolization (TACE) using the rabbit VX2 liver cancer model. Methods The VX2 liver tumor model was established in 28 rabbits, and baseline ha-nor volume (V1, in mm3) was measured by spiral scan computed tomography (CT). Then, the rabbits were randomly divided into four groups (n = 7 each) and administered intraarterial therapies of: ultrafluid lipoidol embolization (group A); pingyangmycin (group B); pingyangmycin-lipiodol emulsion (group C); or saline (group D). All rabbits were sacrificed seven days later, and the response to therapy was determined by measuring the tumor volume (V2, in mm3), calculating the tumor growth rate, detecting expression of the vascular endothelial growth factor (VEGF) tumor biomarker,and performing histological analysis of the microvessel density (MVD) in the liver. Results Prior to therapy, the average V1 of the groups was statistically similar (A: 389.8±167.3, B: 404.1 ± 184.9, C: 355.1 ± 158.3, D: 378.1 ± 189.0; (F= 0.257, P 〉 0.05). In contrast, after therapy the average V2 of the groups was significantly different (A: 922.6±32.9, B: 665.9±99.9, C: 349.5± 177.8, D: 1403.5±411.2; F=26.23, P〈0.05), as was the tumor growth ratio (A: 1.4, B: 0.6, C: -0.02, D: 2.7) and the mean positive ratio ofVEGF (A: 57.1%, B: 42.9%, C: 28.6%, D: 100%; F=8.407, P〈0.05). MVD was highest in group D and lowest in group C (all, P〈 0.05). Bivariate correlation analysis revealed a positive correlation between VEGF expression and MVD (r=0.743, P〈0.01). Conclusion Pingyangmycin exerts anti-tumor effects in the rabbit VX2 liver cancer model, but is more effective when administered as the combination therapy of pingyangmycin-lipiodol emulsion with TACE.
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