Red blood cell deformability (RBC deformability)

Red blood cell deformability is a biophysical property reflecting the ability of erythrocytes to change their shape in response to mechanical forces as they traverse the microcirculation, enabling passage through capillaries smaller than themselves and supporting efficient oxygen transport. This property is determined by the interplay of membrane flexibility, cytoskeletal structure, cytoplasmic viscosity, and hydration status. Loss of RBC deformability occurs in various diseases (including sickle cell disease, hemolytic anemias, diabetes, and neurodegenerative conditions), during blood storage, and with aging, leading to impaired circulation and tissue hypoxia. Several clinical and experimental strategies exist to measure and quantify this property, and its assessment is increasingly used as a biomarker for systemic disease, transfusion efficacy, well as biological aging.

Other names

Erythrocyte deformabilityred cell deformabilityRBC flexibility

Drugs affecting RBC deformability may improve cytoskeletal or membrane stability, shift cell hydration or oxidative state, or reduce hemoglobin polymerization (in sickle cell disease).