Potential Causes Of Apoptosis In Acute Renal Failure

Potential causes of apoptosis in acute renal failure (ARF). The same cytotoxic stimuli that induce necrosis cause apoptosis. The mechanism of cell death induced by a specific injury depends in large part on the severity of the injury. Because most cells require constant external signals, called survival signals, to remain viable, the loss of these survival signals can trigger apoptosis. In ARF, a deficiency of growth factors and loss of cell-substrate adhesion are potential causes of apoptosis. The death pathways induced by engagement of tumour necrosis factor (TNF) with the TNF receptor or Fas with its receptor (Fas ligand) are well known causes of apoptosis in immune cells. TNF and Fas can also induce apoptosis in epithelial cells and may contribute to cell death in ARF.

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