1LIBM - Laboratoire Interuniversitaire de Biologie de la Motricité (CAMPUS SANTE INNOVATIONS - Bâtiment IRMIS - 10 rue de la Marandière 42270 Saint Priest en Jarez /
Université Savoie Mont Blanc - Campus Scientifique - 73370 Le Bourget du Lac / UFR STAPS - Université Claude Bernard Lyon I - 27/29 Boulevard du 11 novembre 1918 - 69622 Villeurbanne Cedex - France)
Abstract : This review focuses on the contribution of abnormal blood rheology in the pathophysiology of sickle cell anemia (SCA). SCA is characterized by a reduction of red blood cell (RBC) deformability but this reduction is very heterogeneous among patients. Recent works have shown that patients with the lowest RBC deformability (measured by ektacytometry) have enhanced hemolysis and would be more prone to develop several complications such as priapism, leg ulcers and glomerulopathy. In contrast, patients with the highest deformability, and not under hydroxyurea therapy, seem to develop more frequently vaso-occlusive like events. Although less studied, RBC aggregation properties are very different between SCA and healthy individuals and it was demonstrated that increased RBC aggregates strength could be involved in some complications. Finally, several studies have established that the vascular system of SCA patients could not fully compensate any increase in blood viscosity because of the loss of vascular reactivity, which may result in vaso-occlusive crises.
https://hal-univ-lyon1.archives-ouvertes.fr/hal-01881733
Contributor : Philippe Connes
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Submitted on : Wednesday, September 26, 2018 - 11:29:51 AM
Last modification on : Thursday, July 11, 2019 - 10:08:58 AM
