Autolysis


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autolysis

[ȯ′täl·ə·səs]
(geochemistry)
Return of a substance to solution, as of phosphate removed from seawater by plankton and returned when these organisms die and decay.
(pathology)
Self-digestion by body cells following somatic or organ death or ischemic injury.

Autolysis

 

self-digestion of animal, plant, and microorganism tissue. In autolysis the cellular proteins, carbohydrates, and fats break down under the action of hydrolytic enzymes in the cells. In living organisms, autolysis is evident in necrotic centers and in cells of malignant neoplasms. Autolysis occurs in decomposing corpses. In plants autolysis occurs after the death of living cells as a result of low temperature, desiccation, and the action of such poisonous substances as chloroform and toluene, as well as during mechanical tissue disintegration. Autolysis of microbe cells is evident in aging microbe cultures and in microorganisms damaged by physical, chemical, or biological agents. Autolysis also occurs in several industrial processes—for example, in tobacco and tea fermentation and during feed storage.

N. P. MESHKOVA

References in periodicals archive ?
This positively charged molecule can combine with cell membranes by electrostatic and hydrophobic interactions followed by membrane insertion to form a permeable channel that preludes cell autolysis and death [56].
lacrymans to metabolize sorghum, causing C-starvation, cell autolysis, and the dilution of secreted protein with cellular protein asseen in C-starved cultures of Paxillus involutus and Aspergillus niger [20, 32].
Cells in mantle layer show autophagic vacuoles in different stages of autolysis (a-h).
Although some researchers suggested that loss of CAPN1 and CAST activities is due to the proteolytic degradation of these molecules, while others attributed it to extensive autolysis of CAPN1 and the breakdown of CAST possibly by calpains (39,56), it is uncertain whether the masking effect proposed by Kristensen et al.
The meninges and underlying brain tissue appeared moderately to severely congested, with varying degrees of necrosis or autolysis. Most birds had insect remains in their gizzards.
Yeast autolysis also occurs during this period, yielding the release of intracellular compounds suchas amino acids, peptides, proteins, polysaccharides, nucleic acid derivatives, and lipids.
In the later course of the fermentation cells go on forming at slow rate and banana waste degradation continues due to attack of extracellular as well as intracellular cellulase liberated as a result of autolysis.
If, at the beginning of the century, psycho-analytical theories provided explanations through a retro-projected aggressiveness, or "reversed crime," contemporary suicidology considers that other abysmal emotions stand for a better explanation of autolysis: shame, guilt, despair, helpless dependence.
A proper fixative fluid should fulfill the following criteria: 1) prevention of autolysis, 2) preservation of structures between and 3) within the cells and inhibition of contamination by bacterial or molds growth (Perry et al., 2016).
Three patients were not diagnosed as leprosy by histopathology; two of those had normal findings, one had autolysis. Of the 52 histopathologically diagnosed cases, 9 (17%) were also positive by Ziehl Neelsen (Z-N) stain.