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Related Concept Videos

Complement System01:27

Complement System

The complement system is a group of approximately 20 plasma proteins that strengthen the body's defenses against infections through opsonization, inflammation, and cell lysis. Opsonization involves coating pathogens with complement proteins, making them more recognizable and facilitating phagocyte engulfment. Certain complement proteins induce inflammation that attracts immune cells to the site of infection. Cell lysis involves the destruction of pathogens through the formation of a membrane...
Acute Pancreatitis I: Introduction01:27

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:
Acute Pancreatitis II: Clinical Manifestations and Management01:30

Acute Pancreatitis II: Clinical Manifestations and Management

Acute pancreatitis presents a complex medical emergency characterized by rapid onset inflammation of the pancreas, demanding timely diagnosis and management to prevent complications. The condition primarily manifests through severe upper abdominal pain that often radiates to the back. This pain intensifies following the consumption of fatty foods. Accompanying symptoms such as nausea, vomiting, abdominal distention, fever, dyspnea, cyanosis, and jaundice can vary in intensity but significantly...
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...
Acute Pancreatitis I: Introduction01:25

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 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...

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Sodium Taurocholate Induced Severe Acute Pancreatitis in C57BL/6 Mice
06:35

Sodium Taurocholate Induced Severe Acute Pancreatitis in C57BL/6 Mice

Published on: June 28, 2021

Complement activation and complement control proteins in acute pancreatitis.

J T Whicher, M P Barnes, A Brown

    Gut
    |November 1, 1982
    PubMed
    Summary
    This summary is machine-generated.

    Acute pancreatitis causes complement protein C3 breakdown, likely from tryptic activity, not classical or alternative pathways. Measuring complement levels is not useful for managing this condition.

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    Area of Science:

    • Biochemistry
    • Immunology
    • Gastroenterology

    Background:

    • Acute pancreatitis involves complex inflammatory processes.
    • The complement system plays a role in inflammation and tissue injury.

    Purpose of the Study:

    • To investigate complement system activation in acute pancreatitis.
    • To determine the involvement of complement pathways in the disease.

    Main Methods:

    • Serum levels of complement proteins (C3, C4, C1 inhibitor, factor I, factor H) were measured.
    • Plasma levels of C3 cleavage products (C3c) and factor B were analyzed.
    • 26 patients with acute pancreatitis were included in the study.

    Main Results:

    • C3 breakdown was observed in 19 out of 26 patients, indicated by reduced C3 levels and presence of C3c.
    • C4 levels remained stable, and factor B breakdown products were not detected, suggesting limited involvement of classical and alternative pathways.
    • Increases in C1 inhibitor and factor H indicated an acute phase response, while factor I levels fluctuated.

    Conclusions:

    • C3 cleavage in acute pancreatitis is likely due to tryptic activity.
    • Complement component measurement is not clinically useful for managing acute pancreatitis.
    • The study suggests specific complement pathways are not significantly activated in this condition.