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[Expression of matrix metalloproteinase-9 in the arachnoid membrane around posterior communicating artery aneurysms]

Wenfeng Feng1, Gang Wang, Guozhong Zhang

  • 1Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China.

Nan Fang Yi Ke Da Xue Xue Bao = Journal of Southern Medical University
|September 3, 2013
PubMed
Abstract

Insights

Matrix metalloproteinase-9 (MMP-9) is elevated in the arachnoid membrane of patients with posterior communicating artery aneurysms. This suggests MMP-9 contributes to aneurysm formation by degrading the extracellular matrix.

Area of Science:

  • Neuroscience
  • Biochemistry
  • Pathology

Context:

  • Posterior communicating artery aneurysms are a significant cause of cerebrovascular disease.
  • The role of matrix metalloproteinase-9 (MMP-9) in aneurysm pathogenesis is not fully understood.
  • Investigating MMP-9 expression in the arachnoid membrane provides insight into aneurysm development.

Purpose:

  • To investigate the expression levels of MMP-9 in the arachnoid membrane surrounding posterior communicating artery aneurysms.
  • To correlate MMP-9 expression with pathological changes in the arachnoid membrane and aneurysm wall.

Summary:

  • Immunohistochemistry revealed significantly higher MMP-9 levels in the perianeurysmal arachnoid membrane of patients with posterior communicating artery aneurysms compared to controls.
  • MMP-9 levels were lower in the arachnoid membrane than in the aneurysm wall.
  • Pathological examination showed tissue destruction and detachment in the perianeurysmal arachnoid membrane.

Impact:

  • MMP-9 is implicated in the degradation of the extracellular matrix of both the vascular wall and the arachnoid membrane.
  • Findings suggest MMP-9 plays a crucial role in the formation and progression of posterior communicating artery aneurysms.
  • This research contributes to understanding the molecular mechanisms underlying aneurysm development.

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