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Early events in acute pancreatitis
1Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA.
Bailliere'S Best Practice & Research. Clinical Gastroenterology
|October 13, 2000
Summary
Early acute pancreatitis involves intra-acinar cell events, leading to trypsinogen activation and injury. Later, extra-acinar changes influence inflammation and cell death, impacting overall severity.
Area of Science:
- Gastroenterology
- Cell Biology
- Pathophysiology
Background:
- Acute pancreatitis pathogenesis involves early intra-acinar cell events.
- Lysosomal hydrolases co-localize with digestive enzyme zymogens, initiating trypsinogen activation.
- Subsequent extra-acinar cell events dictate disease severity and inflammatory response.
Purpose of the Study:
- To elucidate the sequence of cellular events in acute pancreatitis.
- To understand the role of intra-acinar and extra-acinar changes in disease progression.
- To identify potential therapeutic targets for managing clinical pancreatitis.
Main Methods:
- Experimental models were used to study cellular events.
- Observation of lysosomal hydrolase and digestive enzyme zymogen co-localization.
- Analysis of extra-acinar cell responses following initial injury.
Main Results:
- Earliest changes occur within acinar cells, involving enzyme co-localization.
- Trypsinogen activation and acinar cell injury are consequences of this co-localization.
- Extra-acinar cell events modulate inflammation and cell death, influencing pancreatitis severity.
Conclusions:
- Acute pancreatitis initiates with intra-acinar cell events.
- Therapeutic strategies targeting extra-acinar inflammation may benefit patients.
- Understanding the cellular cascade is crucial for effective pancreatitis management.
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