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Related Concept Videos

Necrosis01:16

Necrosis

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...
Overview of Cell Death01:30

Overview of Cell Death

Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...
Cellular Injury IV: Necrosis01:16

Cellular Injury IV: Necrosis

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,...
Apoptosis01:30

Apoptosis

Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
Cellular Injury IlI: Cellular Death01:11

Cellular Injury IlI: Cellular Death

Cell death is the irreversible loss of cellular structure and function, representing the final stage of severe injury. It plays a key role in both normal physiology and disease.Types of Cell DeathThe two main types are necrosis and apoptosis, though others like necroptosis and pyroptosis also exist.Necrosis:Necrosis is an unregulated form of cell death caused by severe injury such as trauma, toxins, or ischemia. It is characterized by cell swelling, membrane loss, rupture, and leakage of...
Cellular Injury V: Apoptosis and Autophagy01:22

Cellular Injury V: Apoptosis and Autophagy

Cells respond to damage and stress through highly coordinated processes that decide whether they survive or undergo controlled self-destruction. Two major pathways involved in this regulation are apoptosis, a type of programmed cell death, and autophagy, a survival mechanism that helps cells adapt to adverse conditions.ApoptosisApoptosis removes aged or injured cells to maintain tissue balance. During this process, the cell shrinks, chromatin condenses and fragments, and membrane-bound...

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Related Experiment Video

Updated: Jun 2, 2026

LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation
06:12

LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation

Published on: May 3, 2024

Programmed necrosis, not apoptosis, in the heart.

Gloria Kung1, Klitos Konstantinidis, Richard N Kitsis

  • 1Wilf Family Cardiovascular Research Institute, Departments of Medicine and Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.

Circulation Research
|April 16, 2011
PubMed
Summary

Necrosis, once thought passive, is now understood as an actively mediated cell death process. This regulated necrosis is crucial for understanding and treating heart disease.

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Neutrophil Lifespan Extension with CLON-G and an In Vitro Spontaneous Death Assay

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LPS and ATP-induced Death of PMA-differentiated THP-1 Macrophages and its Validation
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Neutrophil Lifespan Extension with CLON-G and an In Vitro Spontaneous Death Assay

Published on: May 12, 2023

Area of Science:

  • Cellular biology
  • Cardiovascular research
  • Molecular mechanisms of cell death

Background:

  • Traditionally, necrosis was viewed as a passive, unregulated form of cell death, distinct from apoptosis.
  • Recent research, particularly in Caenorhabditis elegans and mammalian cells, indicates that necrosis can be actively mediated by the cell.
  • Cardiac myocyte apoptosis and necrosis are significant pathological features in major cardiac syndromes.

Purpose of the Study:

  • To review the molecular pathways mediating programmed necrosis.
  • To explore the intersection of necrotic and apoptotic pathways.
  • To discuss the role of regulated necrosis in heart disease and potential therapeutic strategies.

Main Methods:

  • Literature review of experimental findings in Caenorhabditis elegans and mammalian cells.
  • Analysis of molecular events and signaling pathways involved in programmed necrosis.
  • Examination of the implications of regulated necrosis in cardiovascular pathology.

Main Results:

  • Evidence supports that a significant portion of necrotic cell death is actively regulated.
  • Key molecular events governing programmed necrosis are being identified.
  • Necrosis is recognized as a regulated process, necessitating a reevaluation of its role in cardiac syndromes.

Conclusions:

  • The understanding of necrosis as a regulated process opens new avenues for therapeutic interventions in heart disease.
  • Further research into programmed necrosis pathways is essential for developing targeted treatments.
  • Revisiting cell death mechanisms in the heart, considering regulated necrosis, is critical for advancing cardiovascular medicine.