经肝动脉化疗栓塞术联合重组人血管内皮抑制素对兔VX_2肝移植瘤生长及转移的影响

目的 观察重组人血管内皮抑制素(rh-Endostatin)联合经肝动脉化疗栓塞术(TACE)对兔VX_2肝移植瘤生长及转移的影响. 方法 30只家兔肝内肿瘤种植后2周,随机分为3组,每组10只:生理盐水灌注组(对照组)、TACE组及rh-Endostatin联合TACE组.治疗后5周,所有动物均处死,取出肝脏及双肺标本观察.测量动物体重、肝脏的重量、计算肝脏指数(HI),计算肝移植瘤的体积、坏死面积,观察肝内、双肺肿瘤转移的发生率.结果 肿瘤植入后5周,各处理组动物体重均有明显的下降,肝脏重量增加,计算的肝指数各组分别为10.2±2.8、8.5±6.1、6.2±4.4;肿瘤体积各组分别为(36.2±3.4) cm~3、(23.6±4.5) cm~3、(10.9±5.1) cm~3,各组间差异有统计学意义.平均坏死率分别为(52.0±2.3)%、(63.6±3.5)%、(78.6±4.8)%,各组间差异有统计学意义.双肺转移结节的数目各组分别为50.3±31.3、53.6±35.1、16.8±18.4;转移结节的直径各组分别为(3.6±1.4) mm、(3.8±0.6) mm、(1.2±0.6) mm.rh-Endostatin联合TACE组与其它各组相比差异有统计学意义(P <0.01).肝内转移率、转移结节数目、rh-Endostatin联合TACE组与其它各组相比差异有明显的统计学意义( P<0.01). 结论 rh-Endostatin联合TACE治疗抑制肝移植瘤的生长,并对其肺转移也有抑制作用.

The Effect of Recombinant Human Endostatin Combined with TACE on the Growth and Metastases of the Implanted Hepatic Tumors in Rabbits

Objective To investigate the effect of recombinant human endostatin(rh-Endostatin) combined with transcatheter arterial chemoembolization(TACE) on the growth and metastasis of the implanted hepatic tumor in rabbits.Methods Thirty New Zealand white rabbits were randomly divided into three groups (10 in each group)and VX_2 carcinomas were implanted in the left lobes of the livers. Fourteen days later, a catheter was inserted into the hepatic artery of rabbits with VX2 hepatic tumor and infusion was performed via the hepatic artery using physiological saline (group A), TACE (group B) and rh-Endostatin combined with TACE (group C),respectively. Five weeks later, all ribbits were sacrificed, the body weight and liver weight of animals were assessed, the hepatic index(HI) was calculated, the volume and necrotic area of the implanted tumor were measured. The presence of metastases in the liver, lungs were recorded. Results Five weeks after inoculation, the body weight of all animals decreased, the liver weight increased, His were 10.2±2.8, 8.5±6.1and 6.2±4.4 in groups A, B and C, respectively. The mean volume and necrostic areas of the implanted tumor were (36.2±3.4) cm~3 and (52.0±2.3)% in group A, (23.6±4.5) cm~3 and (63.6±3.5)% in group B, (10.9±5.1) cm~3 and (78.6±4.8)% in group C, respectively. There were statistical significance about tumor volume and necrostic areas of the tumors between group C and group A,B ( P<0.01). The numbers of metastases in the lungs were 50.3±31.3,53.6±35.1 and 16.8±18.4 , and the diameters of metastases in the lungs were (3.6±1.4) mm, (3.8±0.6) mm and (1.2±0.6) mm in groups A, B and C, respectively, the difference between group C versus other groups( P<0.01) was statistically significant. The differences of opportunity, tumor numbers and size of metastases in the liver were statistically significant. (P<0.01).Conclusion Treatment with rh-Endostatin combined with TACE can suppress the growth of tumor and tumor's metastases in lungs inVX2 implanted tumors of rabbits.