To investigate the function of matrix metalloproteinase-2(MMP-2),matrix metalloproteinase-9(MMP-9) and tissue inhibitors of metalloproteinase-2(TIMP-2) in the invasion of gliomas of the limbic system.Methods The expre...To investigate the function of matrix metalloproteinase-2(MMP-2),matrix metalloproteinase-9(MMP-9) and tissue inhibitors of metalloproteinase-2(TIMP-2) in the invasion of gliomas of the limbic system.Methods The expression of MMP-2,MMP-9 and TIMP-2 in low and high-grade gliomas and meningiomas was detected by using immunohistochemical technique.Results (1) The expression levels of MMP-2 and MMP-9 were significantly higher in high grade gliomas than those in low grade gliomas (P<0.05 and P<0.01 respectively).They were also significantly higher in low grade gliomas than those in meninginomas (P<0.05 and P<0.01 respectively).(2) The TIMP-2 expression level was obviously lower in gliomas of grade Ⅲ and grade Ⅳthan that in gliomas of grade Ⅰ and grade Ⅱ.Also,the expression of TIMP-2 in gliomas of grade Ⅰ and grade Ⅱ was significantly lower than that in meningiomas. Conclusion (1) The expression of MMP-2 and MMP-9 in human brain gliomas is related to malignant progression of gliomas.They might be used as the indicators to evaluate the malignancy and prognosis of gliomas.(2) Imbalance between MMP-s and TIMP-s may be one of the improtant factors promoting glioma invasion.5 refs,3 figs.展开更多
文摘To investigate the function of matrix metalloproteinase-2(MMP-2),matrix metalloproteinase-9(MMP-9) and tissue inhibitors of metalloproteinase-2(TIMP-2) in the invasion of gliomas of the limbic system.Methods The expression of MMP-2,MMP-9 and TIMP-2 in low and high-grade gliomas and meningiomas was detected by using immunohistochemical technique.Results (1) The expression levels of MMP-2 and MMP-9 were significantly higher in high grade gliomas than those in low grade gliomas (P<0.05 and P<0.01 respectively).They were also significantly higher in low grade gliomas than those in meninginomas (P<0.05 and P<0.01 respectively).(2) The TIMP-2 expression level was obviously lower in gliomas of grade Ⅲ and grade Ⅳthan that in gliomas of grade Ⅰ and grade Ⅱ.Also,the expression of TIMP-2 in gliomas of grade Ⅰ and grade Ⅱ was significantly lower than that in meningiomas. Conclusion (1) The expression of MMP-2 and MMP-9 in human brain gliomas is related to malignant progression of gliomas.They might be used as the indicators to evaluate the malignancy and prognosis of gliomas.(2) Imbalance between MMP-s and TIMP-s may be one of the improtant factors promoting glioma invasion.5 refs,3 figs.