Journal
FRONTIERS IN CARDIOVASCULAR MEDICINE
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fcvm.2022.1021934
Keywords
abdominal aortic aneurysm; mechanosignals; shear stress; mechanotransduction; mechanical stress; vascular pathology
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Cumulative evidence supports the idea that mechanical and frictional forces have distinct effects in the aortic layers and contribute to the development of abdominal aortic aneurysms (AAA). Mechanosensory cellular hubs play a crucial role in triggering signaling cascades that lead to the degradation of the extracellular matrix (ECM), resulting in aortic rupture. This review provides an overview of the current understanding of the mechanotransduction networks in different cell types during AAA development, focusing on the mechanosensors and stressors that accumulate in the AAA sac and their effects on inflammation, oxidative stress, remodeling, and ECM degradation. Manipulating this mechano-machinery could be a promising direction for future AAA research.
Cumulative evidence has shown that mechanical and frictional forces exert distinct effects in the multi-cellular aortic layers and play a significant role in the development of abdominal aortic aneurysms (AAA). These mechanical cues collectively trigger signaling cascades relying on mechanosensory cellular hubs that regulate vascular remodeling programs leading to the exaggerated degradation of the extracellular matrix (ECM), culminating in lethal aortic rupture. In this review, we provide an update and summarize the current understanding of the mechanotransduction networks in different cell types during AAA development. We focus on different mechanosensors and stressors that accumulate in the AAA sac and the mechanotransduction cascades that contribute to inflammation, oxidative stress, remodeling, and ECM degradation. We provide perspectives on manipulating this mechano-machinery as a new direction for future research in AAA.
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