益气活血解毒方对小鼠Lewis肺癌生长转移及血管生成的作用

目的：研究益气活血解毒方对小鼠Lewis肺癌生长及自发性肺转移的作用并探讨其作用机制。方法:复制小鼠Lewis肺癌模型并随机分组,腹腔注射给药 10 d 后，观察抑瘤率，HE染色观察瘤组织病理学变化，免疫组化法检测瘤组织增殖细胞核抗原（PCNA）的表达；给药 20 d 后，观察肺转移瘤结节数、瘤组织微血管密度（MVD），免疫组化法和ELISA法分别检测瘤组织及血清血管内皮生长因子（VEGF）的表达。结果:益气活血解毒方能减少小鼠Lewis肺癌肿瘤重量和肺转移灶数，高低剂量(24 mg·kg^-1·d^-1,12 mg·kg^-1·d^-1)抑瘤率分别为48.29%、37.26%，肺转移结节数分别为1.67、3.50，对照组为6.44；并能抑制肿瘤细胞PCNA的表达，降低肿瘤组织微血管密度,抑制肿瘤细胞及血清中VEGF的表达。结论:益气活血解毒方能抑制小鼠Lewis肺癌的生长与转移,其机制可能与抑制VEGF表达,减少肿瘤血管生成有关。

Effect of Yiqi Huoxue Jiedu Fang on the growth, metastasis and angiogenesis of Lewis lung carcinomas

AIM: To study the effect of Yiqi Huoxue Jiedu Fang (YHJ), composed of ginsenoside, penex notogingseng and berberin, on tumor growth and metastasis and to explore its mechanism. METHODS: Murine Lewis lung carcinoma transplant model was established and mice were treated with YHJ by intraperitoneal injection. After 10 days, the inhibitory rate of tumor, pathology of tumor and PCNA of tumor cells were detected. After 20 days, numbers of metastatic foci on lung surface and microvessel density (MVD) were determined. Expression of VEGF in tumor and serum were also analyzed by immunohistochemical test and ELISA, respectively. RESULTS: YHJ reduced the weight of tumor and the amount of metastatic foci. The inhibitory rates of tumor at high and low dose of YHJ (24 mg·kg_^-1·d_^-1, 12 mg·kg_^-1·d_^-1) were 48.29% and 37.26%, and the number of metastatic foci was 1.67 and 3.50, while control was 6.44. Furthermore, PCNA of tumor cells, MVD of tumor and VEGF expression in serum and tumor were decreased in YHJ treatment goup as compared with control. CONCLUSION: YHJ remarkably inhibits Lewis lung carcinoma growth and metastasis in mice. Its mechanism may be related to inhibition of angiogenesis.