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Fibrosis can occur in many tissues within the body, typically as a result of inflammation or damage. Common sites of fibrosis include the lungs, liver, kidneys, brain, and heart: Micrograph showing cirrhosis of the liver. The tissue in this example is stained with a trichrome stain, in which fibrosis is colored blue.
Cell damage (also known as cell injury) is a variety of changes of stress that a cell suffers due to external as well as internal environmental changes. Amongst other causes, this can be due to physical, chemical, infectious, biological, nutritional or immunological factors. Cell damage can be reversible or irreversible.
Coagulative necrosis is a type of accidental cell death typically caused by ischemia or infarction. In coagulative necrosis, the architectures of dead tissue are preserved for at least a couple of days. [1] It is believed that the injury denatures structural proteins as well as lysosomal enzymes, thus blocking the proteolysis of the damaged cells.
Oxidative damage may occur in any cell in the body but the effects on the three most susceptible organs will be the primary concern. It may also be implicated in damage to red blood cells , [7] [8] the liver, [9] heart, [10] endocrine glands (adrenal glands, gonads, and thyroid), [11] [12] [13] or kidneys, [14] and general damage to cells. [2] [15]
Pathogen-induced necrosis programs in cells with immunological barriers (intestinal mucosa) may alleviate invasion of pathogens through surfaces affected by inflammation. [1] Toxins and pathogens may cause necrosis; toxins such as snake venoms may inhibit enzymes and cause cell death. [15]
Fatty liver disease (hepatic steatosis) is a reversible condition where large vacuoles of triglyceride fat accumulate in liver cells. [8] Non-alcoholic fatty liver disease is a spectrum of disease associated with obesity and metabolic syndrome. [9] Hereditary diseases that cause damage to the liver include hemochromatosis, [10] involving ...
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