Necrosis Induction
Necrosis Induction - 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,...
11:33
Inductance
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2023
Source: Yong P. Chen, PhD, Department of Physics & Astronomy, College of Science, Purdue University, West Lafayette, IN This experiment will use inductive coils to demonstrate the concept of inductor and inductance. Magnetic induction will be demonstrated using a rod magnet inserted into or extracted away from the core of a coil to induce a transient electromotive force (emf) voltage in the coil, measured by a voltmeter. This experiment will also demonstrate the mutual inductance between...
14:01
Anesthesia Induction and Maintenance
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2016
Source: Kay Stewart, RVT, RLATG, CMAR; Valerie A. Schroeder, RVT, RLATG. University of Notre Dame, IN The Guide for the Care and Use of Laboratory Animals ("The Guide") states that pain assessment and alleviation are integral components of the veterinary care of laboratory animals. The definition of anesthesia is the loss of feeling or sensation. It is a dynamic event involving changes in anesthetic depth with respect to an animal's metabolism, surgical stimulation, or variations in the...
FAQs
Severe stress first compromises energy production and ATP availability, weakening the systems that maintain ion balance. Ions and water then accumulate inside the cell, producing swelling and progressive loss of structural integrity. Once the plasma membrane ruptures, intracellular contents escape into surrounding tissue, creating measurable cellular injury and linking the initial stress to inflammatory responses.
ATP depletion removes the energy required for normal cellular maintenance, especially the regulation of intracellular ions and water. As this control fails, swelling develops and membrane stability deteriorates. Monitoring energy loss therefore helps researchers connect the initiating stress with irreversible injury and distinguish an early metabolic failure from the later physical disruption of the cell.
Membrane rupture releases intracellular contents into the surrounding environment rather than retaining them within the injured cell. These released contents can stimulate inflammatory signaling and extend the biological consequences beyond the original site of damage. In experimental biology, this relationship allows investigators to examine how cellular destruction contributes to tissue inflammation and broader host responses.
Researchers can compare toxin exposure, physical damage, infection, and loss of oxygen or energy as different initiating stresses. Although these conditions arise from distinct biological or environmental challenges, they can converge on ATP depletion, failed ion regulation, swelling, and membrane rupture. Such comparisons help identify shared injury mechanisms while preserving the context of each stressor.
A controlled study begins by selecting an experimental cell or tissue model, applying a defined necrosis-inducing stress, and examining the resulting cellular and tissue changes. Investigators can then relate the exposure to ATP loss, ion-regulation failure, swelling, membrane disruption, and inflammatory signaling. This workflow supports consistent analysis of injury mechanisms and host responses.
Researchers may induce necrotic injury to test whether a compound protects cells from severe stress or promotes targeted cellular destruction. The induced damage provides a controlled context for comparing treated and untreated conditions through changes in cellular integrity, tissue injury, or inflammatory signaling. These experiments can inform studies of disease mechanisms and potential cellular effects of compounds.
By reproducing injury associated with toxins, physical damage, infection, or oxygen and energy loss, experimental models connect cellular events with tissue-level consequences. Investigators can examine how membrane disruption and released intracellular contents influence inflammation and host responses. This approach is relevant to biological studies of disease mechanisms, environmental stress, and microbial challenges.