Does matrix metalloproteinase activity predict severity of acute pancreatitis?
Related Experiment Video
Updated: Aug 6, 2026

Preparing a Mice Model of Severe Acute Pancreatitis via a Combination of Caerulein and Lipopolysaccharide Intraperitoneal Injection
Published on: May 10, 2024
Murat Aynaci1, Pars Tuncyurek, Deniz Nart
1Department of Surgery, Ege University, Izmir, Turkey.
Background:
Matrix metalloproteinases (MMP) modulate end-organ complications of acute pancreatitis, but the correlation between increased MMP production and histological severity of disease remains unclear. We examined the role of MMP and pancreas histology on experimental acute pancreatitis.
Methods:
Forty male Wistar albino rats were subjected to cerulein-induced pancreatitis (8, 16, 24 and 32 h groups) or sham treatment. The animals were killed at different time points and pancreatic tissues were harvested to assess MMP (1, 2 and 9) activity and inflammatory changes.
Results:
Compared with other groups, 8 h group had decreased tissue MMP-1 concentrations. MMP-9 concentrations were lower in 24-h and 32-h groups, as were histological severity scores. MMP-2 activity did not differ among groups. Pancreatitis was prominent in 8-h, 16-h and 24-h groups by means of histology.
Conclusion:
Induction of pancreatitis by cerulein altered pancreatic MMP levels in the early phase of inflammation. Inhibition of MMP-2 and MMP-9 paralleled histological scores. Therefore, MMP may have a predictive value to assess histological severity.
Insights
Matrix metalloproteinases (MMP) levels change during acute pancreatitis. MMP inhibition correlates with disease severity, suggesting MMPs may predict pancreatitis histological scores.
Area of Science:
- Gastroenterology
- Biochemistry
Background:
- Matrix metalloproteinases (MMP) are implicated in acute pancreatitis complications.
- The relationship between MMP production and pancreatitis severity requires further investigation.
Purpose of the Study:
- To investigate the role of MMPs and pancreatic histology in experimental acute pancreatitis.
Main Methods:
- Cerulein-induced pancreatitis was established in Wistar albino rats.
- Pancreatic tissues were analyzed for MMP-1, MMP-2, and MMP-9 activity and inflammatory changes at various time points.
Main Results:
- MMP-1 levels decreased at 8 hours post-induction.
- MMP-9 concentrations and histological severity scores were lower at 24 and 32 hours.
- MMP-2 activity showed no significant difference across groups.
Conclusions:
- Cerulein-induced pancreatitis alters pancreatic MMP levels in early inflammation.
- MMP-2 and MMP-9 inhibition correlated with histological severity.
- MMPs may serve as predictive biomarkers for assessing acute pancreatitis histological severity.
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