MMP-9: biomarker for abdominal aneurysm

Area of Science:

• Vascular Biology
• Biomarker Discovery
• Cardiovascular Research

Background:

• Matrix Metalloproteinase 9 (MMP-9) is significantly expressed in Abdominal Aortic Aneurysm (AAA) tissue.
• Previous studies suggest MMP-9 as a potential biomarker for AAA, but findings have been conflicting.
• This study investigates the correlation between MMP-9 levels and AAA to clarify its utility as a biomarker.

Purpose of the Study:

• To determine the correlation between Matrix Metalloproteinase 9 (MMP-9) concentration levels and Abdominal Aortic Aneurysm (AAA).
• To evaluate the utility of MMP-9 as a diagnostic biomarker for AAA in the studied population.

Main Methods:

• Prospective controlled trial involving 20 AAA patients and 36 healthy controls.
• MMP-9 concentrations measured using enzyme-linked immunosorbent assay (ELISA).
• Comparison of MMP-9 levels with abdominal imaging (ultrasonography or CT).

Main Results:

• MMP-9 levels were significantly correlated with AAA (p=0.004).
• Mean MMP-9 was 21.39 ± 1.03 ng/mL in AAA patients versus 23.94 ± 0.60 ng/mL in controls (p < 0.05).
• Sensitivity and specificity for MMP-9 as an AAA biomarker were 60% and 64%, respectively, with a cutoff of 12.54.

Conclusions:

• MMP-9 levels show a significant correlation with Abdominal Aortic Aneurysm (AAA).
• The diagnostic utility of MMP-9 for AAA is limited by its low sensitivity and specificity.
• MMP-9 has restricted value in predicting AAA presence or absence.