Necrosis
Necrosis - Related Videos
01:16
Necrosis
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2023
Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”. Morphological Manifestations of Necrosis Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become anucleated and die, but their...
02:12
Muscle Necrosis Assay in C. elegans Induced by a Pathogenic Aeromonas Strain
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2026
Source: Chen, Y. et. al., Evaluating Virulence and Pathogenesis of Aeromonas Infection in a Caenorhabditis elegans Model. J. Vis. Exp. (2018)This video demonstrates a muscle necrosis assay in C. elegans (Caenorhabditis elegans) using pathogenic Aeromonas strains. By feeding green fluorescent protein (GFP)-expressing worms on Aeromonas-seeded plates, the assay models bacterial infection and reveals tissue damage through fluorescence imaging. The progressive loss of muscle structure and GFP...
01:16
Cellular Injury IV: Necrosis
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2026
Necrosis is a form of irreversible cell death caused by severe injury such as ischemia, toxins, or trauma. Unlike programmed cell death, it is an uncontrolled, pathological process that typically provokes inflammation in surrounding tissues.Pathophysiologic ChangesNecrosis begins when cells sustain critical damage, leading to swelling of organelles, particularly mitochondria, and rapid ATP depletion. As energy levels decline, membrane ion pumps fail, leading to calcium influx and eventually,...
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Comprehensive Analysis of Procoagulant Platelets Exhibiting Features of Necrosis, Apoptosis and Platelet Activation
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Cited by 1 •
2025
The present protocol provides a comprehensive set of procedures necessary to analyze procoagulant platelets, which exhibit overlapping features of necrosis, apoptosis, and platelet activation.
09:09
Annexin V and Propidium Iodide Labeling
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2023
Staining with annexin V and propidium iodide (PI) provides researchers with a way to identify different types of cell death—either necrosis or apoptosis. This technique relies on two components. The first, annexin V, is a protein that binds certain phospholipids called phosphatidylserines, which normally occur only in the inner, cytoplasm-facing leaflet of a cell’s membrane, but become “flipped” to the outer leaflet during the early stages of apoptosis. The second component is the DNA-binding...
FAQs
Necrosis progresses when cellular stress overwhelms energy production and the systems that maintain the plasma membrane. As energy becomes insufficient, ion balance fails, causing water accumulation and cell swelling. Organelles then break down, weakening cellular structure until the membrane can no longer contain the cell. This sequence links metabolic failure to physical tissue damage.
Membrane rupture releases intracellular contents into the surrounding tissue. These released materials can trigger inflammatory signaling, which distinguishes necrosis from cell death that remains more contained and programmed. Inflammation may affect nearby cells and contribute to secondary tissue damage, making membrane integrity an important factor in understanding how a local injury can influence surrounding tissue.
Necrosis is generally uncontrolled and commonly follows severe external or internal injury, whereas programmed cell death represents a regulated cellular process. The key biological contrast is the loss of membrane integrity and inflammatory signaling associated with necrosis. This distinction helps researchers interpret whether tissue damage reflects direct injury with inflammation or an organized cellular elimination process.
Several damaging conditions can initiate necrosis, including infection, exposure to toxins, trauma, and loss of blood supply. Although these causes differ, each can produce severe cellular stress that disrupts energy production and membrane maintenance. Comparing these settings helps biology researchers connect the appearance of damaged tissue with the underlying cause and mechanism of injury.
Studying necrosis provides a framework for explaining tissue injury across ischemia, infection, and trauma. In each setting, cellular damage can progress from disrupted energy production and ion balance to swelling, organelle breakdown, membrane rupture, and inflammation. This mechanistic context helps relate cellular events to the broader pattern of tissue damage observed in biological disease and injury.
Necrosis research can inform disease diagnosis by clarifying how cellular injury develops and how it affects surrounding tissue. It also supports therapeutic development by identifying processes that may be targeted to limit tissue damage. In addition, understanding inflammatory signaling after membrane rupture can guide strategies intended to reduce secondary damage beyond the initial injury.