脑出血灶周脑组织MMP-2和MMP-9的表达

目的观察急性脑出血患者灶周脑组织基质金属蛋白酶-2（MMP-2）、MMP-9的表达及其意义。方法选择42例采用外科手术治疗的急性脑出血患者破碎脑组织病理标本;另选30例脑外伤患者出血灶周破损脑组织作为对照。用免疫组化法测定脑组织MMP-2、MMP-9阳性细胞表达情况。结果两组患者脑组织MMP-9和MMP-2阳性细胞表达明显升高。42例急性脑出血早期患者灶周脑组织MMP-9、MMP-2阳性细胞表达分别为39例和37例;而30例脑外伤出血患者脑组织MMP-9、MMP-2阳性细胞表达分别为28例和27例,两组比较差异均无显著性（P均〉0.05）。结论MMP-2和MMP-9参与了人类急性脑出血脑水肿的形成。

Study on expression of matrix metalloproteinase-2 and matrix metalloproteinase-9 in brain tissue adjacent to hemorrhage after brain hemorrhage in human

OBJECTIVE: To investigate the expression and significance of matrix metalloproteinase-2 (MMP-2) and MMP-9 in perihematoma brain tissues after acute brain hemorrhage in human. METHODS: Forty-two patients with acute brain hemorrhage received surgery, the brain tissues adjacent to hemorrhagic site were obtained during surgery, and positive expressions of MMP-2 and MMP-9 were determined with immunohistochemical staining. Brain tissues from 30 patients with cerebral trauma were obtained to serve as controls. RESULTS: The positive expressions of MMP-2 and MMP-9 in focal brain tissues were significantly elevated in early acute brain hemorrhage. Compared with 28 and 27 cases with MMP-2 and MMP-9 positive expression respectively in control group, there were 39 and 37 cases with MMP-2 and MMP-9 positive expression respectively in acute brain hemorrhage group. There were no significant differences between two groups (both P>0.05). CONCLUSION: MMP-2 and MMP-9 might contribute to brain edema formation in the acute intra-cerebral hemorrhage of human.