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ass="sub-title">Background: Aortic stenosis is a common heart valvular disease whose pathological processes include an inflammatory reaction and lipid accumulation. However, its detailed pathogenesis is yet to be completely elucidated. Therefore, it is of great significance to
It was the objective of this study to determine whether reduced cleavage of von Willebrand factor (VWF) multimers following aortic valve replacement (AVR) is a consequence of reduced shear stress or postoperative changes in VWF cleavage protease (ADAMTS-13) activity. Aortic stenosis (AS) may be
The aim of the study was to investigate the effect of propranolol upon the activity of proteases in rat myocardium subjected to aortic stenosis. In acute heart hypertrophy induced by aortic stenosis, the activity of all three proteases in the myocardium does not change significantly. Propranolol in
One of the major challenges in cardiovascular medicine is to identify candidate biomarker proteins. Secretome analysis is particularly relevant in this search as it focuses on a subset of proteins released by a cell or tissue under certain conditions. The sample can be considered as a plasma
Valvular heart diseases represent an important public health burden. With the decrease in the incidence of rheumatic heart disease, calcific aortic stenosis has now become the most common valvular disease in Western countries. Its prevalence increases with age, such that its affects about 4% of the
Aortic valve stenosis (AVS) is the most common valvular heart disease in the Western world. Therapy based on apolipoprotein A-I (apoA-I), the major protein component of high-density lipoproteins, results in AVS regression in experimental models. Nevertheless, apoA-I degradation by proteases might
BACKGROUND
Infusions of apolipoprotein A-I (apoA-I), the major protein component of high-density lipoproteins (HDL), result in aortic valve stenosis (AVS) regression in experimental models. Severe AVS can be complicated by acquired von Willebrand syndrome, a haemorrhagic disorder associated with
OBJECTIVE
An association of aortic-valve stenosis and abnormal bleeding, particularly from gastrointestinal angiodysplasia, has been reported. In this setting, high-shear stress generated by the transvalvular gradient leads to a conformational change of plasmic von Willebrand factor, making this
BACKGROUND
The combination of aortic stenosis, acquired coagulopathy, and anemia due to gastrointestinal (GI) bleeding is described as Heyde syndrome.
METHODS
We report a surgical case of a 77-year-old man who was admitted because of melena and exertional chest compression. GI endoscopy could not
The aim of this study was to reveal the pathogenesis of aortic stenosis (AS) and regurgitation (AR) by comparing differences in mechanical and biochemical alterations. We applied scanning acoustic microscopy (SAM) to measure the speed of sound (SOS) through valves to estimate the elasticity and
OBJECTIVE
To investigate mechanisms of lymphangiogenesis in aortic valve stenosis (AS).
METHODS
Lymphatic vessels were visualized with LYVE-1 staining in 20 control, 5 sclerotic, and 40 stenotic human aortic valves. Vascular endothelial growth factors (VEGFs) VEGF-C and VEGF-D, and their
MicroRNAs have been associated with cardiomyocyte apoptosis, a process involved in myocardial remodelling in aortic valve (Av) stenosis (AS). Our aim was to analyse whether the dysregulation of myocardial microRNAs was related to cardiomyocyte apoptosis in AS patients. Endomyocardial biopsies were
Cardiac sodium (Na(+))-calcium (Ca(2+)) exchanger 1 (NCX1) is central to the maintenance of normal Ca(2+) homeostasis and contraction. Studies indicate that the Ca(2+)-activated protease calpain cleaves NCX1. We hypothesized that calpain is an important regulator of NCX1 in response to pressure
The aim of the study was to investigate the effect of propranolol upon protein synthesis and degradation processes in cell-free subfractions of rat myocardium in experimental cardiac hypertrophy induced by aortic stenosis. It was found that hypertrophy stimulates incorporation of 3H-amino acids by
C57BL/6-Kit(W-sh/W-sh) mice are generally regarded as a mast cell-deficient model, as they lack the necessary kit receptor for mast cell development. Further characterization of this strain, however, indicates that C57BL/6-Kit(W-sh/W-sh) mice also have a disruption in the Corin gene. Corin is a