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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.
Hemosiderin deposition in the liver is a common feature of hemochromatosis and is the cause of liver failure in the disease. Selective iron deposition in the beta cells of pancreatic islets leads to diabetes [4] [2] due to the distribution of transferrin receptor on the beta cells of islets [3] and in the skin leads to hyperpigmentation.
If extravascular hemolysis is extensive, hemosiderin can be deposited in the spleen, bone marrow, kidney, liver, and other organs, resulting in hemosiderosis. [32] In a healthy person, a red blood cell survives 90 to 120 days in the circulation, so about 1% of human red blood cells break down each day. [38] [unreliable medical source?
Damaged cells are cleared by macrophages in the spleen, where the precipitate and damaged membrane are removed, leading to characteristic "bite cells". The denaturing process is irreversible and the continual elimination of damaged cells leads to Heinz body anemia. There are several pathways leading to the hemoglobin damage. NADPH deficiency ...
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 ...
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.
In adaptation to higher tendency of cell death, blind mole rats evolved a mutation in the tumor suppressor protein p53 (which is also used in humans) to prevent cells from undergoing apoptosis. Human cancer patients have similar mutations, and blind mole rats were thought to be more susceptible to cancer because their cells cannot undergo ...
Blood tests (to monitor levels of platelets, red blood cells, and white blood cells), stool tests (especially to check for microscopic or macroscopic levels of fresh or old blood), urinalysis (to help monitor kidney function, like blood urea nitrogen, or BUN, levels, pH, and for blood in the urine- hematuria) [3] Differential diagnosis