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Both cysteine protease cathepsins and matrix metalloproteinases are implicated in the pathogenesis of abdominal aortic aneurysms (AAAs) in humans and animals. Blood and aortic tissues from humans or animals with AAAs contain much higher levels of these proteases, and often lower levels of their
Abdominal aortic aneurysm (AAA) is an age-related disease resulting in aortic wall weakening and dilatation which may progress to the fatal point of abrupt aortic wall rupture. Chronic inflammation is a driving force in the pathogenesis of AAA and extracellular matrix (ECM) proteases are considered
Cysteine and aspartic proteases possess high elastolytic activity and might contribute to the degradation of the abdominal aortic aneurysm (AAA) wall. The aim of this study was to analyze, in detail, the proteases (cathepsins B, D, K, L and S, and inhibitor cystatin C) found in human AAA and healthy
Extracellular matrix remodeling is an important mechanism in the initiation and progression of cardiovascular diseases. Cysteine protease cathepsins are among the important proteases that affect major events in the pathogenesis of atherosclerosis and abdominal aortic aneurysm, including smooth
BACKGROUND
Abdominal aortic aneurysm (AAA) disease is a complex degenerative process that is associated with elevated proteolytic activity. This increased proteolytic activity may be linked to an imbalance in the protease regulatory mechanisms. We hypothesize that reduced AAA plasma inhibitory
OBJECTIVE
It has been suggested that the intraluminal thrombus of abdominal aortic aneurysms (AAAs) predisposes for AAA rupture. Here, we examined the possibility that the intraluminal thrombus influences expression and activity of matrix-degrading proteases in the AAA wall.
RESULTS
Twenty patients
Proteases are involved in the degradation of the extracellular matrix, which contributes to the formation of abdominal aortic aneurysm (AAA). To identify new disease targets in addition to the results of previous microarray studies, we performed next-generation sequencing (NGS) of the whole
BACKGROUND
The elastinolytic cysteine proteases, including cathepsins S and K, are overexpressed at sites of arterial elastin damage. Cystatin C, an inhibitor of these enzymes, is expressed in arterial smooth muscle cells; an imbalance in cystatin C has been implicated in the aortic wall
BACKGROUND
Cysteine proteases are potent elastolytic enzymes and together with their inhibitor, cystatin C, have been linked with the growth of abdominal aortic aneurysms (AAAs). These enzymes and their inhibitors have previously been studied in AAAs, but comparisons have always been made with wall
Previous studies on the pathogenesis of abdominal aortic aneurysms have shown both elastase-like activity in the aortic wall and a decreased elastin content. The present study, using specific radioimmunoassays for pancreatic elastase 2 (IRE2) and cationic trypsin(ogen) (IRCT), investigates the
Deterioration of the aortic wall resulting in formation of aneurysm may be evoked by increased activity of elastases, collagenases and lysosomal proteases. These enzymes come from macrophages and neutrophil granulocytes which are elements of the inflammatory reaction accompanying aneurysm. These
Abdominal aortic aneurysm (AAA) disease is a common, morbid, and highly lethal pathology. Extraordinary efforts have been launched to determine the molecular and pathophysiological characteristics of AAAs. Although surgery is highly effective in preventing death by rupture for larger AAAs, no
Background: Thoracic aortic aneurysm (TAA) is a severe threat that is characterized by the increased aortic diameter. The dysfunction of vascular smooth muscle cells (VSMCs) contributes to the formation of TAA. Previous research indicated
BACKGROUND
Rupture of an abdominal aortic aneurysm (AAA) is the cause of death in approximately 2% of men above 65 years. Most AAAs contain an intra-luminal thrombus (ILT), which is a potential source of proteases capable of degrading the underlying aneurysm wall. The AAA wall covered by a thick ILT
Acquired abdominal aortic aneurysms are usually associated with a mural thrombus through which blood continues to flow. Some early data suggest that aneurysmal evolution correlates with the biological activity of the thrombus. Our hypothesis was therefore that the thrombus could adsorb blood