Objective To study role of matrix metalloproteinase 9 (MMP-9) destroying the extracellular matrix (ECM) in the pathogenesis of intracranial aneurysms.

• 目的探讨基质金属蛋白酶9(MMP-9)对脑血管壁细胞外基质(ECM)破坏在颅内动脉瘤发病机制中的作用。