三种血管生长因子与肝癌微血管密度及门静脉癌栓形成的关系

目的探讨碱性成纤维细胞生长因子(bFGF)、血管内皮细胞生长因子(VEGF)和血小板衍化内皮细胞生长因子(PD-ECGF)与肝癌微血管密度及门静脉癌栓形成的关系.方法用免疫组化法对61例手术切除的肝细胞癌(HCC)标本分别作抗肿瘤血管内皮细胞染色以及抗bFGF、VEGF、PD-ECGF染色.结果HCC组织中bFGF、VEGF和PD-ECGF表达阳性率分别为45.9%、75.4%和70.5%.HCC组织中bFGF、VEGF和PD-ECGF表达均阴性、其中之一表达阳性、其中两种表达阳性及三种均表达阳性者,伴有门静脉癌栓的阳性率分别为16.7%、25.0%、54.2%和63.2%,趋势卡方检验差异有显著意义(P＜0.05);HCC组织中的MVD计数分别为99±56、113±27、140±47和194±52,方差分析差异有非常显著差异(P＜0.001).结论随着HCC组织中血管生长因子表达阳性数目的增多,其肿瘤血管生成能力明显增大,形成门静脉癌栓的机率亦增加.

Expression of three angiogenic factors in hepatocellularcarcinoma and their relation with microvessel density and prtal vein tumor thrombosis

OBJECTIVE: To investigate the expression rates of the three angiogenic factors-basic fibroblast growth factor (bFGF), vascular endothelial growth factor (VEGF), and platelet-derived endothelial cell growth factor (PD-ECGF) in hepatocellular carcinoma (HCC) and to investigate the relation of their expression rates to the microvessel density (MVD) of the tumor and to the formation of portal vein tumor thrombus (PVTT). METHODS: Immunohistochemical staining was conducted on 61specimens of hepatic cell carcinoma removed in operation. RESULTS: The expression rates of dFGF, VEGF, and PD-ECGF in HCC tissue were 45.9%, 75.4% and 70.5% respectively. The incidence rates of PVTT while all of the 3 angiogenic factor were negatively expressed, one of them was positively expressed, two of them were positively expressed, and all of them were positively expressed were 16.7%, 25.0%, 54.2% and 63.2% respectively (P < 0.05, test for trend). The MVD counts in HCC tissue in the above-mentioned four conditions were 99 +/- 56, 113 +/- 27, 140 +/- 347 and 194 +/- 52 respectively (P < 0.001, ANOVA test). CONCLUSION: As the number of positively expressed angiogenic factors in HCC tissue increases, the angiogenic capability of the tumor enhances greatly, and the incidence rate of PVTT increases too.