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Cell Volume Changes and Membrane Ruptures Induced by Hypotonic Electrolyte and Sugar Solutions.

ABSTRACT: The cell volume changes induced by hypotonic electrolyte and sucrose solutions were studied in Chinese-hamster-ovary epithelial cells. The effects in the solutions with osmolarities between 32 and 315 mosM/L and distilled water were analyzed using bright-field and fluorescence confocal microscopy. The changes of the cell volume, accompanied by the detachment of cells, the formation of blebs, and the occurrence of almost spherical vesicle-like cells ("cell-vesicles"), showed significant differences in the long-time responses of the cells in the electrolyte solutions compared with the sucrose-containing solutions. A theoretical model based on different permeabilities of ions and sucrose molecules and on the action of Na⁺/K⁺-ATPase pumps is applied. It is consistent with the observed temporal behavior of the cells' volume and the occurrence of tension-induced membrane ruptures and explains lower long-time responses of the cells in the sucrose solutions.

SUBMITTER: Bozic B

PROVIDER: S-EPMC7750460 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Cell Volume Changes and Membrane Ruptures Induced by Hypotonic Electrolyte and Sugar Solutions.

Božič Bojan B Zemljič Jokhadar Špela Š Kristanc Luka L Gomišček Gregor G

Frontiers in physiology 20201207

The cell volume changes induced by hypotonic electrolyte and sucrose solutions were studied in Chinese-hamster-ovary epithelial cells. The effects in the solutions with osmolarities between 32 and 315 mosM/L and distilled water were analyzed using bright-field and fluorescence confocal microscopy. The changes of the cell volume, accompanied by the detachment of cells, the formation of blebs, and the occurrence of almost spherical vesicle-like cells ("cell-vesicles"), showed significant differenc ...[more]

PMID: 33364974

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