促血管生成素-2、内皮抑素在人脑胶质瘤中的表达及意义

目的 探讨促血管生成素-2(Ang-2)和内皮抑素(ES)在人脑胶质瘤中的表达及意义.方法 采用免疫组织化学的方法 ,对108例脑胶质瘤和5例正常脑组织标本中ES和Ang-2的表达进行测定.应用原位杂交技术检测ES mRNA在人脑胶质瘤中的表达.结果 Ⅲ～Ⅳ级胶质瘤中的ES(0.0657±0.0038)和Ang-2(0.0286±0.0042)表达水平明显高于Ⅰ～Ⅱ级胶质瘤(分别为0.0349±0.0048、0.0084±0.0018)以及正常脑组织(0、0),差异有统计学意义(P<0.01);Ⅲ～Ⅳ级胶质瘤中的ES mRNA(0.0310±0.0041)明显高于Ⅰ～Ⅱ级胶质瘤(0.0152±0.0031)和正常脑组织(0)(P<0.01);胶质瘤中Es与Ang-2的比值和胶质瘤病理分级呈负相关(r=-0.810,P<0.01).结论 ES和Ang-2的协同作用可能在人脑胶质瘤细胞侵袭性生长及恶性发展中起重要作用,且与胶质瘤的恶性程度及预后有关.

Expression of angiopoietin-2 and endostatin in human glioma and its significance

Objective To investigate the expression of endostatin and angiopoietin (Ang)-2 in human ghoma and its significance. Methods The expression of endostatin and Ang-2 were measured by immunohistochemistry and endostatin mBNA by hybridization in situ in 108 cases of brain glioma and 5 cases of normal brain tissues. Results The expression of endostatin (0.0657±0.0038)and Ang-2 (0.0286± 0.0042) were significantly higher in grade Ⅲ-Ⅳ glioma patients than those in grade Ⅰ-Ⅱ ghoma patients (0.0349±0.0048,0.0084±0.0018, respectively) and normal brain tissues (0,0)(P<0.01). The expression of endostatin mRNA were significantly higher in grade Ⅲ-Ⅳ glioma patients (0.0310±0.0041) than that in grade Ⅰ-Ⅱ glioma patients (0.0152±0.0031) and normal brain tissues (0)(P< 0.01 ). Theratio of endo-stalin to Ang-2 was negatively rehted to the grade of glioma (r=-0.810,P <0.01). Conclusion The interaction of endostatin and Ang-2 plays an important role in the invasive growth and malignant development of human glioma, and may be related to the prognosis and the malignant degree of glioma.