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Complement-mediated acinar cell necroses in pancreatitis induced by basement membrane antibodies
Abstract:
To study the role of the serum complement system in the early necrosis of acinar cells an acute pancreatitis was produced by injection of basement membrane antibodies into the pancreatic duct of mice and rats. In all animals deposition of complement (C3) and antibasement membrane IgG could be observed in an identical position within areas of acinar cell necrosis. The extent of parenchymal damage and the intensity of complement deposits corresponded to the injected dose of antibodies. The importance of cytolytically active complement components (C5-9) was demonstrated in congenitally C5-defective old line mice which did not show typical centrolobular necroses 1 hr after intraductal injection of antibodies. However, the normocomplementemic mice developed extensive necroses of acinar cells. The results support the hypothesis of a complement-induced acinar cell necrosis in acute pancreatitis.
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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.
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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...
Acute Pancreatitis I: Introduction
Acute Pancreatitis II: Pathophysiology
Chronic Pancreatitis I: Introduction
Chronic Pancreatitis II: Pathophysiology