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Chronic Pancreatitis I: Introduction

Chronic Pancreatitis I: Introduction

Chronic pancreatitis is a long-standing, relapsing inflammation of the pancreas, characterized by irreversible damage to the gland. It results in progressive destruction of the pancreatic parenchyma, fibrosis, and eventual loss of both exocrine and endocrine function. The disease may evolve gradually after multiple episodes of acute pancreatitis or develop independently.EtiologyChronic pancreatitis can arise from a variety of causes:Alcohol use is the leading cause, accounting for 70–80% of...

Chronic Pancreatitis I: Introduction

Chronic Pancreatitis I: Introduction

The pancreas, an elongated and flat gland situated behind the stomach, serves a vital function in digesting food and managing blood sugar levels.
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...

Acute Pancreatitis I: Introduction

Acute Pancreatitis I: Introduction

Acute pancreatitis is the sudden inflammation of the pancreas caused by the early activation of digestive enzymes, leading to the autodigestion of pancreatic tissue. This results in local inflammation and, in severe cases, systemic complications.EtiologyUnderstanding the underlying causes is crucial, as identifying the etiology guides treatment and anticipates complications. Acute pancreatitis can be triggered by various factors, typically grouped into the following clinical categories.Biliary...

Acute Pancreatitis I: Introduction

Acute Pancreatitis I: Introduction

Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
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:

Chronic Pancreatitis II: Pathophysiology

Chronic Pancreatitis II: Pathophysiology

Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...

Acute Pancreatitis II: Pathophysiology

Acute Pancreatitis II: Pathophysiology

The pathophysiology of acute pancreatitis centers on injury to pancreatic acinar cells, which initiates a cascade of harmful intracellular events.This injury leads to premature activation of trypsinogen to trypsin in the pancreas. Trypsin then activates other digestive enzymes, such as chymotrypsin, elastase, and phospholipase A2, which begin breaking down pancreatic tissue. The resulting autodigestion causes local inflammation, tissue swelling, hemorrhage, and fat necrosis.Injured acinar cells...

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A Simple and Rapid Method for Simultaneous Isolation of Primary Islets and Primary Pancreatic Acinar Cells from Mice

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[Autoimmune pancreatitis].

Hideaki Hamano¹

¹Department of Medicine, Gastroenterology, Shinshu University School of Medicine, Matsumoto 390-8621, Japan. hidehama@shinshu-u.ac.jp

Rinsho Byori. the Japanese Journal of Clinical Pathology

|October 29, 2009

Summary

This summary is machine-generated.

Autoimmune pancreatitis is a distinct chronic pancreatitis form marked by elevated IgG4 levels and plasma cell infiltration. It responds well to glucocorticoid therapy, offering a treatment pathway for this complex condition.

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Area of Science:

Gastroenterology
Immunology
Pathology

Context:

Autoimmune pancreatitis (AIP) is a unique chronic pancreatitis subtype.
Characterized by elevated serum IgG4 concentrations.
Features lymphoplasmacytic sclerosing pancreatitis and fibrosis.

Purpose:

To describe the key clinical, histological, and pathological features of autoimmune pancreatitis.
To highlight the diagnostic criteria and treatment response.
To discuss associated extra-pancreatic manifestations.

Summary:

AIP presents with pancreatic duct narrowing and responds favorably to glucocorticoids (e.g., prednisone 30-40 mg/day initially).
Histological findings include abundant IgG4-bearing plasma cell infiltration.
Extra-pancreatic complications mimic AIP pathology, seen in conditions like sclerosing cholangitis and Mikulicz disease.

Impact:

Provides a comprehensive overview for clinicians diagnosing and managing AIP.
Emphasizes the role of IgG4 in disease pathogenesis and diagnosis.
Facilitates understanding of AIP's systemic nature and treatment implications.