Gut Liver.  2012 Apr;6(2):249-255.

Increased Serum Activity of Matrix Metalloproteinase-9 in Patients with Acute Variceal Bleeding

• Kwon OS
• Jung HS
• Bae KS
• Jung YK
• Kim YS
• Choi DJ
• Kim YS
• Kim JH

Abstract

BACKGROUND/AIMS
Matrix metalloproteinases (MMP)-2 and -9 can degrade essential components of vascular integrity. The aim of this study was to investigate the association between those MMPs and variceal bleeding (VB).
METHODS
Fifteen controls, 12 patients with acute ulcer bleeding (UB) group, 37 patients with varix (V group), and 35 patients with acute VB group were enrolled. Serum was obtained to measure MMP-2 and -9 activity by zymogram protease assays.
RESULTS
The activity levels of these compounds were compared with the controls' median value. The median MMP-9 activity was 1.0 in controls, 1.05 in the UB group, 0.43 in the V group, and 0.96 in the VB group. The level of MMP-9 activity was higher in the VB group than in the V group (p<0.001). In the VB group, there was a signifi cant decrease in MMP-9 activity over time after bleeding (p<0.001). The median MMP-2 activity level was 1.0 in controls, 1.01 in the UB group, 1.50 in the V group, and 1.55 in the VB group. The level of MMP-2 activity was similar in the VB and V groups.
CONCLUSIONS
The level of MMP-9 activity increased in association with VB. The role of MMP-9 in the pathogenesis of VB should be verified.

Keyword

Hemorrhage; Esophageal and gastric varices; Matrix metalloproteinase 2; Matrix metalloproteinase 9

MeSH Terms

Esophageal and Gastric Varices
Hemorrhage
Humans
Matrix Metalloproteinase 2
Matrix Metalloproteinase 9
Matrix Metalloproteinases
Ulcer
Varicose Veins
Matrix Metalloproteinase 2
Matrix Metalloproteinase 9
Matrix Metalloproteinases