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Related Concept Videos

Chronic Pancreatitis II: Pathophysiology01:21

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...
Chronic Pancreatitis I: Introduction01:24

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...
Chronic Pancreatitis I: Introduction01:25

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...
Type II Diabetes II: Pathophysiology01:24

Type II Diabetes II: Pathophysiology

PathophysiologyType 2 diabetes mellitus (T2DM ) is a chronic metabolic disorder characterized by insulin resistance and progressive pancreatic β-cell dysfunction, leading to impaired glucose homeostasis. It results from interactions among genetic predisposition, environmental factors, and metabolic stressors, such as overnutrition and a sedentary lifestyle.Insulin Resistance and Glucose DysregulationEarly T2DM involves insulin resistance in skeletal muscle, adipose tissue, and the liver.
Acute Pancreatitis II: Pathophysiology01:21

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...
Type I Diabetes II: Pathophysiology01:26

Type I Diabetes II: Pathophysiology

Type 1 diabetes mellitus arises from an immune-mediated destruction of pancreatic β-cells, resulting in an absolute deficiency of insulin. This process develops in genetically susceptible individuals when autoimmunity, environmental exposures, and immunologic dysregulation converge to trigger a targeted attack on the insulin-producing cells of the pancreas. The β-cells are located within the islets of Langerhans and are essential for regulating blood glucose by facilitating cellular uptake of...

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Related Experiment Video

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A Mouse Model for Chronic Pancreatitis via Bile Duct TNBS Infusion
06:44

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Published on: February 28, 2021

β-Cell dysfunction in chronic pancreatitis.

M Sasikala1, R Talukdar, P Pavan kumar

  • 1Asian Healthcare Foundation, Hyderabad, India. aigres.mit@gmail.com

Digestive Diseases and Sciences
|March 3, 2012
PubMed
Summary
This summary is machine-generated.

Chronic pancreatitis (CP) causes diabetes by damaging pancreatic beta-cells. Understanding early molecular changes in CP is key to preventing beta-cell dysfunction and developing new treatments.

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Area of Science:

  • Gastroenterology and Endocrinology
  • Molecular Biology
  • Pathophysiology

Background:

  • Chronic pancreatitis (CP) is a progressive inflammatory disease causing pancreatic damage and diabetes.
  • Diabetes in CP results from beta-cell destruction within an inflammatory environment.
  • Molecular mechanisms of beta-cell dysfunction in CP remain incompletely understood.

Purpose of the Study:

  • To review factors affecting islet function in chronic pancreatitis.
  • To elucidate molecular events leading to beta-cell dysfunction in CP.
  • To identify potential targets for preventive and therapeutic strategies.

Main Methods:

  • Literature review of studies on chronic pancreatitis and beta-cell function.
  • Analysis of molecular pathways and cellular changes in pancreatic islets.
  • Synthesis of current knowledge on factors influencing beta-cell dysfunction.

Main Results:

  • Beta-cell dysfunction in CP may precede significant fibrosis and clinical diabetes onset.
  • Inflammation, cytokines, and altered pancreatic milieu contribute to early islet dysfunction.
  • Fibrosis progression leads to further islet destruction and endocrine insufficiency.
  • Transcription factors like Pdx-1, MafA, and NeuroD are crucial for beta-cell function.

Conclusions:

  • Beta-cell dysfunction in CP is multifactorial, involving early inflammatory and molecular changes.
  • Understanding the internal milieu's impact on beta-cells is critical.
  • Targeting molecular events offers potential for novel CP and diabetes therapies.