[Reaction of cells to hypertonic effects by cryoprotection]

Area of Science:

• Cell biology
• Biophysics
• Thermodynamics

Background:

• Hypertonic solutions induce cell volume changes.
• Understanding these dynamics is crucial for cell physiology.
• Non-equilibrium thermodynamics offers a framework for studying such processes.

Purpose of the Study:

• To theoretically investigate cell volume changes in hypertonic solutions.
• To experimentally validate theoretical models using mouse peritoneal exudate cells.
• To elucidate the mechanism of cell injury under hypertonic stress.

Main Methods:

• Theoretical analysis using non-equilibrium thermodynamics.
• Derivation of analytical expressions for relaxation times.
• Experimental study of mouse peritoneal exudate cells exposed to glycerol, PEO-400, and PEO-1500 solutions.

Main Results:

• Analytical expressions for the relaxation times of a two-stage process were determined.
• Experimental results showed agreement with theoretical predictions.
• The study provides a quantitative understanding of cell response to hypertonic environments.

Conclusions:

• Non-equilibrium thermodynamics provides a valid framework for modeling cell volume changes.
• Theoretical predictions align with experimental observations of cell behavior in hypertonic solutions.
• The findings contribute to understanding cellular responses and potential injury mechanisms in hypertonic conditions.