Wall shear stress and endothelial cells dysfunction in the context of abdominal aortic aneurysms

Zuzana Macek Jilkova (1) , Valérie Deplano (2) , Claude Verdier (3) , Mamadou Toungara (4) , Christian Geindreau (4) , Alain Duperray (1)

1 INSERM U823 - Institut d'oncologie/développement Albert Bonniot de Grenoble
2 IRPHE - Institut de Recherche sur les Phénomènes Hors Equilibre
3 DYFCOM - DYnamique des Fluides COmplexes et Morphogénèse [Grenoble]
4 3SR - Laboratoire sols, solides, structures - risques [Grenoble]

The formation of aneurysm of abdominal aorta (AAA) is a multifactorial and predominantly degenerative process that results from a complex interplay between biological processes in the arterial wall and the haemodynamic stimuli on the wall, i.e. wall shear stresses (WSSs) and elongations of the wall directly applied on vascular endothelial cells (ECs) partly regulate the arterial wall remodelling (Golledge et al. 2006; Humphrey and Holzapfel 2012). In the case of AAA, these mechanical stimuli strongly vary in space and time, leading to strong spatiotemporal gradients (Figure 1). The effect of these abnormal mechanical stimuli leads to EC dysfunction. This phenomenon plays a significant role in AAA pathology, in which damage of ECs, associated with changes in endothelial permeability and ...

Domaines: Biomécanique [physics.med-ph]; Biomécanique [physics.med-ph]

Zuzana Macek Jilkova, Valérie Deplano, Claude Verdier, Mamadou Toungara, Christian Geindreau, et al.. Wall shear stress and endothelial cells dysfunction in the context of abdominal aortic aneurysms. Computer Methods in Biomechanics and Biomedical Engineering, 2013, 16 (supp1), pp.27-29. ⟨hal-00853100⟩