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Acute Inflammation, A rapid & local inflammatory response to tissue…
Acute Inflammation
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Causes
Infections: bacterial, viral, parasitic, fungal
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Physical agents: burns, corrosives
Tissue necrosis (death) - e.g. via ischemia, myocardial infarction
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Hypersensitivity reactions - e.g. allergies, asthma
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Inflammatory cells
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Eosinophils
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Enzymes (peroxidases, collagenases)
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Chemical mediators
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Vasoactive Amines
Histamine
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Source: Mast cells, basophils, platelets
Stored in mast cell granules & released by mast cell degranulation in response to a variety of stimuli - physical injury, binding of antibodies to mast cells (allergic)
Ab & complement products bind to specific receptors on mast cells & trigger signalling pathways that induce rapid degranulation
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