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Elevated expression of matrix metalloproteinase-13 in abdominal aortic aneurysms

Gerard Tromp1, Zoran Gatalica, Magdalena Skunca

  • 1Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, USA.

Annals of Vascular Surgery
|May 25, 2004
PubMed

Insights

Matrix metalloproteinase-13 (MMP13) is elevated in abdominal aortic aneurysms. This study found increased MMP13 expression and protein in aneurysmal aortic tissue, suggesting its role in aneurysm development.

Area of Science:

  • Vascular Biology
  • Biochemistry
  • Genetics

Background:

  • Extracellular matrix destructive remodeling is a hallmark of abdominal aortic aneurysms.
  • Matrix metalloproteinases (MMPs) are key enzymes involved in matrix degradation.

Purpose of the Study:

  • To investigate the expression of matrix metalloproteinase-13 (MMP13) in human abdominal aortic aneurysm (AAA) tissue.
  • To determine if MMP13 is upregulated in AAA compared to non-aneurysmal aorta.

Main Methods:

  • Real-time quantitative reverse transcriptase polymerase chain reaction (RT-qPCR) was used to measure MMP13 mRNA expression.
  • Aortic tissue samples from AAA repair patients (n=36) and non-aneurysmal autopsy controls (n=20) were analyzed.
  • Ribosomal 18S RNA was used as an endogenous control for RNA input.

Main Results:

  • MMP13 was detected in all aortic tissue samples.
  • MMP13 expression was significantly elevated in the aneurysmal sac compared to non-aneurysmal aorta.
  • Immunohistochemical analysis confirmed the presence of MMP13 protein within the aneurysmal aortic wall.

Conclusions:

  • Matrix metalloproteinase-13 (MMP13) is upregulated in abdominal aortic aneurysms.
  • Elevated MMP13 expression and protein presence suggest its involvement in the pathogenesis of AAAs.
  • MMP13 may represent a potential therapeutic target for abdominal aortic aneurysm.

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