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Cytoskeleton and mechanotransduction in the pathophysiology of ventilator-induced lung injury Taniguchi LU; Caldini EG; Velasco IT; Negri EMJ Bras Pneumol 2010[May]; 36 (3): 363-71Although mechanical ventilation is an important therapy, it can result in complications. One major complication is ventilator-induced lung injury, which is caused by alveolar hyperdistension, leading to an inflammatory process, with neutrophilic infiltration, hyaline membrane formation, fibrogenesis and impaired gas exchange. In this process, cellular mechanotransduction of the overstretching stimulus is mediated by means of the cytoskeleton and its cell-cell and cell-extracellular matrix interactions, in such a way that the mechanical stimulus of ventilation is translated into an intracellular biochemical signal, inducing endothelial activation, pulmonary vascular permeability, leukocyte chemotaxis, cytokine production and, possibly, distal organ failure. Clinical studies have shown the relationship between pulmonary distension and mortality in patients with ventilator-induced lung injury. However, although the cytoskeleton plays a fundamental role in the pathogenesis of ventilator-induced lung injury, there have been few in vivo studies of alterations in the cytoskeleton and in cytoskeleton-associated proteins during this pathological process.|Cytoskeleton/*enzymology/physiology[MESH]|Humans[MESH]|Inflammation Mediators/physiology[MESH]|Mechanotransduction, Cellular/*physiology[MESH]|Ventilator-Induced Lung Injury/*etiology[MESH] |
