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Proteomic analysis of the abdominal aortic aneurysm wall Molacek J; Mares J; Treska V; Houdek K; Baxa JSurg Today 2014[Jan]; 44 (1): 142-51PURPOSES: A ruptured AAA (rAAA) is a common cause of death in males over 60 years of age, and the global mortality from rAAA exceeds 80 %. The pathological processes occurring in the wall of the developing AAA are still unclear. The potential pathophysiological mechanisms underlying aortic aneurysms have been examined by many studies using immunohistochemistry and were, therefore, targeted at specific, preselected protein antigens. METHODS: We collected samples of tissue from anterior wall of an aneurysm sac from 15 patients indicated for AAA resection (group A) during the period from 2010 to 2011. These samples were subjected to a proteomic analysis. In addition, we collected control samples of identical aortic tissue from 10 heart-beating deceased organ donors (group B). RESULTS: A total of 417 differentially expressed protein fractions were identified, 18 of which were only detected in the healthy controls, while 85 were specific for aneurysm tissue and 314 were detectable in both groups. In 175 protein fractions, the gel-derived spot volumes differed significantly between aneurismal and healthy aortic tissue. CONCLUSIONS: We found a significant difference in the proteome of the AAA tissue and non-dilated aortic tissue. We demonstrated that the AAA proteome is considerably richer and more varied than the healthy and atherosclerotic aorta. We believe that our results clearly demonstrate a completely different etiopathogenesis of atherosclerosis and aneurismal disease.|*Proteomics/methods[MESH]|Adolescent[MESH]|Adult[MESH]|Aged[MESH]|Aortic Aneurysm, Abdominal/*genetics/metabolism[MESH]|Atherosclerosis/genetics[MESH]|Electrophoresis, Gel, Two-Dimensional[MESH]|Female[MESH]|Humans[MESH]|Male[MESH]|Middle Aged[MESH]|Proteome/*genetics/metabolism[MESH]|Young Adult[MESH] |
