Role of matrix metalloproteinase in the aneurismatic aortic disease
AbstractThe aorta is involved in a large variety of diseases and the atherosclerotic aneurysms represent the most common type of these. Recent reports have attempted to clarify the mechanisms, that cause the formation and the progression of the atherosclerotic aneurysms, caused not only by the atherosclerosis. One of the features of this disease is the extensive proteolytic destruction of structural matrix proteins in the aortic wall realized by the matrix metalloproteinases. The atherosclerotic aneurysm can be considered a disease caused by an imbalance between connective tissue destruction and its repair. Knowledge of the role played by matrix metalloproteinases in the formation process of the aneurysms has made the inhibition of these proteins a logical therapeutic strategy. Once completed the aneurysm treatment, surgical or endovascular, the endothelial damage must disappear; the persistence of this damage, after endovascular procedure, is the cause of the formation of the endoleaks. The preoperative matrix metalloproteinases plasmatic levels are related to the aneurysm diameter and after endovascular treatment these values come back normal, except in the case of presence of an endoleak, that donâ€™t make possible the reduction of these values. In spite of that, obscure points still remain, above all about the dosage of these proteins and their inhibition through drugs with clear metalloproteinases- inhibiting properties. The aim of this study is to clarify further on the mechanisms of the formation of the aneurysms with particular care to the matrix metalloproteinases, their dosage and their drug inhibition.
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