Dictionary » C » Cytolysis

Cytolysis

Definition

noun

(1) Osmotic lysis, i.e. the bursting or rupturing of cell membrane when the cell can no longer contain the excessive inflow of water (or extracellular fluid).

(2) The degeneration or dissolution of cell caused by the disruption of cell membrane.


Supplement

Cytolysis or osmotic lysis occurs in animal cells and certain bacteria, especially when the cells are exposed to a hypotonic environment, causing the water to move into the cell, thereby increasing or expanding the cell. If the cell membrane cannot regulate or hold the excessive influx of water, the cell will eventually burst. Osmotic lysis does not occur in plant cells because of the cell wall that contains the turgor pressure.


Word origin: Greek kutos, hollow vessel + New Latin, from Greek lusis, a loosening.

Related forms: cytolytic (adjective).
Related terms: immune cytolysis.

Synonym: osmotic lysis (1).
Compare: plasmolysis.
See also: osmosis.


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Re: Where do bacteria live?

... sensitive to osmotic stress. If the bacteria were in a HYPOtonic solution – the plasma membrane (cell membrane/phospholipid bilayer) would burst (cytolysis). If the bacteria were in a HYPERtonic solution, the plasma membrane would weaken and/or collapse and be “paralyzed” (plasmolysis). To prevent ...

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by libraduvenus
Sat Jun 14, 2008 2:54 am
 
Forum: Microbiology
Topic: Where do bacteria live?
Replies: 2
Views: 9052

Red Blood Cells

Probably due to exessive osmosis which leads to cytolysis. not probably ;) iso-osmotic fluid is 0,9% NaCl-solution.

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by sdekivit
Mon Oct 23, 2006 2:59 pm
 
Forum: Cell Biology
Topic: Red Blood Cells
Replies: 6
Views: 15038

Red Blood Cells

Probably due to exessive osmosis which leads to cytolysis.

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by Condraz23
Sun Oct 22, 2006 8:51 pm
 
Forum: Cell Biology
Topic: Red Blood Cells
Replies: 6
Views: 15038


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