Related Experiment Video
Updated: May 3, 2026
09:37
A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
Published on: July 14, 2016
7.7K
Human cationic trypsinogen (PRSS1) variants and chronic pancreatitis
Balázs Csaba Németh1, Miklós Sahin-Tóth
1Department of Molecular and Cell Biology, Henry M. Goldman School of Dental Medicine, Boston University, Boston, Massachusetts.
Summary
Genetic variations in the serine protease 1 (PRSS1) gene are linked to hereditary and chronic pancreatitis. This review examines PRSS1 variants, their functions, and their roles in pancreatitis development.
Area of Science:
- Genetics
- Gastroenterology
- Molecular Biology
Background:
- Variations in the serine protease 1 (PRSS1) gene are associated with hereditary and chronic pancreatitis.
- These PRSS1 variants can lead to increased trypsin activity or endoplasmic reticulum stress.
- Determining the pathogenicity of rare PRSS1 variants remains challenging.
Purpose of the Study:
- To review PRSS1 gene variants associated with pancreatitis.
- To discuss the functional properties of these variants.
- To elucidate the role of PRSS1 variants in chronic pancreatitis.
Main Methods:
- Literature review of PRSS1 variants published since 1996.
- Analysis of functional properties of identified variants.
- Correlation of variants with pancreatitis phenotypes.
Main Results:
- Identified PRSS1 variants influencing trypsinogen autoactivation and degradation.
- Documented PRSS1 variants causing trypsinogen misfolding and endoplasmic reticulum stress.
- Highlighted the difficulty in assessing the clinical relevance of rare PRSS1 variants.
Conclusions:
- PRSS1 variants play a significant role in the pathogenesis of hereditary and chronic pancreatitis.
- Understanding variant function is crucial for diagnosing and managing pancreatitis.
- Further research is needed to clarify the clinical significance of rare PRSS1 variants.
Related Concept Videos
01:25Chronic Pancreatitis I: Introduction
26
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%...
26
01:24Chronic Pancreatitis I: Introduction
906
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...
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...
906
01:21Acute Pancreatitis II: Pathophysiology
46
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...
46
01:21Chronic Pancreatitis II: Pathophysiology
30
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...
30
01:25Acute Pancreatitis I: Introduction
24
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...
24
01:27Acute Pancreatitis I: Introduction
1.5K
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:
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:
1.5K