Structural changes of erythrocyte membrane revealed by 3D confocal optical profilometer

Abstract

We examined hematological changes influenced by the experimental hypervitaminosis A. The 3D confocal optical profilometer was applied for assessment of the erythrocytes' membrane structural changes influenced by an overdose of vitamin A. The blood smears were evaluated in terms of alterations of geometrical and optical parameters of erythrocytes for two groups of animals: oil base and retinol palmitate (n = 9 animals for each group). The results demonstrate that an overdose of retinol palmitate causes changes in the torus curvature and pallor of discocytes, their surface area and volume. The observed structural malformations of the shape of red blood cells become visible at the earlier preclinical stage of changes in animal state and behavior. With this in mind, the results of the study open a new area of research in the certain dysfunction diagnosis of red blood cells and have a great potential in the further development of new curative protocols. Tatiana A. Lomanovskaya and Gennadii A. Piavchenko are same impact authors.

Impact of Plasmonic Nanoparticles on Poikilocytosis and Microrheological Properties of Erythrocytes

“…The unique biconcave shape and high deformability of RBC enable them to squeeze through the narrowest capillaries to perform the key function of gas exchange in tissues [14]. RBC are commonly used for NP testing due to their availability and structural simplicity [15] and are actively investigated as a natural drug delivery system (DDS) [12,16], underlying the need for NP evaluation at a cellular level [17]. Many NP were found to influence RBC: fullerene NP soften RBC membrane [18], nanodiamonds may induce RBC aggregation [19], polystyrene NP adsorbed on RBC membrane or incorporated into the RBC can affect cellular deformability [17].…”