碱性成纤维细胞生长因子和基质金属蛋白酶2在脑胶质瘤中的表达及其意义

目的 探讨碱性成纤维细胞生长因子(bFGF)和基质金属蛋白酶2(MMP-2)在脑胶质瘤中的表达及其临床意义.方法 应用免疫组织化学技术,对临床上经过石蜡包埋的56例胶质瘤和9例正常脑组织标本中bFGF和MMP-2的表达水平进行检测,并比较它们之间的相关性.结果 bFGF和MMP-2在高级别胶质瘤(Ⅲ、Ⅳ级)中阳性表达率分别为(41.23±12.35)％和(54.32±7.32)％；在低级别胶质瘤(Ⅰ、Ⅱ级)中阳性表达率分别为(24.78±7.57)％和(21.56±3.85)％；在正常脑组织中阳性表达率分别为(9.51±2.69)％和(7.18±2.12)％.在高、低级别胶质瘤和正常脑组织中bFGF和MMP-2阳性表达率两两比较差异均有统计学意义(P＜0.05),且二者之间表达水平呈正相关(r＝0.71,P＜0.01).结论 bFGF和MMP-2表达水平和胶质瘤的组织学分级密切相关;bFGF和MMP-2的协同作用可能在胶质瘤细胞的侵袭性生长中有重要意义.

Expression and significance of matrix metalloproteinase-2 and basic fibroblast growth factor in human glioma

Objective To explore the expression and significance of matrix metalloproteinase-2 (MMP-2) and basic fibroblast growth factor (bFGF) in human glioma.Methods The expression levels of bFGF and MMP-2 in 56 cases of human glioma and 9 cases of normal brain tissue specimen were detected by immunohistochemistry technique.Furthermore,the correlation between the expression of the bFGF and MMP-2 was compared.Results In normal brain tissue,grade Ⅰ,Ⅱ and grade Ⅲ,Ⅳ,the positive expression of bFGF were (9.51 + 2.69)％,(24.78 ±- 7.57 )％,(41.23 ± 12.35 )％,respectively,and MMP-2were (7.18 ± 2.12)％,(21.56 ± 3.85 )％,(54.32 + 7.32)％,respectively.The differences were significant among them (P ＜0.05).bFGF and MMP-2 were positive correlated (r ＝0.71,P ＜0.01).Conclusions There is an intrinsic correlation between the expression of the bFGF and MMP-2 and histological grade of human gliomas.These findings suggest that the synergistic interaction of bFGF and MMP-2 play an important role during the tumor invasion.