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Updated: Apr 28, 2026

A Mouse Model for Chronic Pancreatitis via Bile Duct TNBS Infusion
Published on: February 28, 2021
Autoimmune pancreatitis can develop into chronic pancreatitis.
Masahiro Maruyama, Takayuki Watanabe, Keita Kanai
1Center for Health, Safety, and Environmental Management, Shinshu University, 3-1-1 Asahi, Matsumoto 390-8621, Japan. skawapc@shinshu-u.ac.jp.
Autoimmune pancreatitis (AIP) can progress to chronic pancreatitis, often presenting with pancreatic stones. Early detection and management are key to improving long-term outcomes for AIP patients.
Area of Science:
- Gastroenterology
- Immunology
- Pathology
Background:
- Autoimmune pancreatitis (AIP) is a distinct pancreatitis subtype linked to autoimmune mechanisms.
- AIP is identified by elevated serum IgG4 and IgG4-positive plasma cell infiltration.
- Corticosteroid therapy effectively treats acute AIP, but long-term outcomes are not well-defined.
Purpose of the Study:
- To investigate the long-term prognosis of autoimmune pancreatitis.
- To test the hypothesis that AIP can evolve into chronic pancreatitis.
- To identify risk factors for disease progression and complications.
Main Methods:
- Review of clinical findings and study results related to AIP.
- Analysis of pancreatic stone formation in AIP patients.
- Evaluation of progression to chronic pancreatitis based on diagnostic criteria.
Main Results:
- Pancreatic calcification in AIP correlates with disease recurrence.
- Approximately 40% of AIP patients develop pancreatic stones long-term, linked to duct narrowing.
- Nearly 20% of AIP patients progress to chronic pancreatitis, with risk factors including pancreatic head swelling and duct characteristics.
Conclusions:
- Autoimmune pancreatitis may progress to chronic pancreatitis over time.
- Pancreatic stone formation is a significant long-term complication associated with AIP recurrence and ductal changes.
- Identifying risk factors like pancreatic head swelling and duct narrowing is crucial for predicting AIP progression.
Related Concept Videos
Chronic Pancreatitis I: Introduction
Chronic Pancreatitis I: Introduction
Pancreatitis is the inflammation of the pancreas, which occurs when the immune system becomes active and causes swelling, pain, and disruptions in organ function. Pancreatitis can manifest as either an acute or chronic condition.
Acute pancreatitis arises suddenly and lasts for a brief duration, while chronic pancreatitis is a long-term affliction...
Chronic Pancreatitis II: Pathophysiology
Acute Pancreatitis II: Pathophysiology
Acute Pancreatitis I: Introduction
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
Acute Pancreatitis I: Introduction

