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Updated: Jul 24, 2026
09:12
Measuring Deformability and Red Cell Heterogeneity in Blood by Ektacytometry
Published on: January 12, 2018
Effect of pH on red blood cell deformability
D Kuzman1, T Znidarcic, M Gros
1Institute of Biophysics, Faculty of Medicine, University of Ljubljana, Slovenia.
Pflugers Archiv : European Journal of Physiology
|September 27, 2000
Summary
Lowering pH significantly reduces red blood cell (RBC) deformability by altering membrane elasticity. This study quantifies RBC mechanical changes across a physiological pH range.
Area of Science:
- Biophysics
- Hematology
- Cellular Mechanics
Background:
- Red blood cell (RBC) deformability is crucial for microcirculation.
- RBC membrane properties influence cell mechanics.
- pH is a critical physiological parameter affecting cellular functions.
Purpose of the Study:
- To investigate the impact of pH on RBC deformability.
- To determine the relationship between pH and RBC membrane elastic properties.
- To quantify changes in RBC mechanical behavior within a physiological pH range.
Main Methods:
- Experimental measurement of RBC deformability using a cone-plate rheoscope.
- Controlled manipulation of cell suspension pH from 6.2 to 8.0.
- Standardization of cell volume via osmolarity adjustments to isolate pH effects.
Main Results:
- A significant decrease in RBC deformability was observed at lower pH values.
- RBC elongation under shear stress diminished as pH decreased.
- The study demonstrates a pH-dependent alteration of RBC membrane elasticity.
Conclusions:
- pH changes within the range of 6.2 to 8.0 demonstrably affect RBC membrane elastic properties.
- Altered membrane elasticity at lower pH leads to reduced RBC deformability.
- Findings highlight the sensitivity of RBC mechanics to extracellular pH variations.
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