نتایج جستجو برای: ulcerative atherosclerotic plaque
تعداد نتایج: 70932 فیلتر نتایج به سال:
Decreased cathepsin K levels in human atherosclerotic plaques are associated with plaque instability
Investigating the determinants and dynamics of atherosclerotic plaque instability is a key area of current cardiovascular research. Extracellular matrix degradation from excessive proteolysis induced by enzymes such as cathepsin K (Cat K) is implicated in the pathogenesis of unstable plaques. The current study assessed the expression of Cat K in human unstable atherosclerotic plaques. Specimens...
BACKGROUND MicroRNAs (miRNA, miR) are noncoding RNAs that regulate gene expression by hindering translation. miRNA expression profiles have been shown to differ in vivo and in vitro in many cellular processes associated with cardiovascular diseases (CVDs). The progression of CVDs has also been shown to alter the blood miRNA profile in humans. CONTENT We summarize the results of animal and cel...
To cite: Bajaj R, Chhabra L, Kruger M, et al. BMJ Case Rep Published online: [please include Day Month Year] doi:10.1136/bcr-2013009542 DESCRIPTION A 64-year-old man with a history of paroxysmal atrial fibrillation (AF) and transient ischaemic attack was admitted with complaints of palpitations and fatigue. He was found to be having AF with sustained rapid ventricular response. He had failed ra...
BACKGROUND Activated macrophages play an important role in the pathogenesis of acute ischemic syndromes. It has been postulated that detection of heat released by activated inflammatory cells of atherosclerotic plaques may predict plaque rupture and thrombosis. Previous ex vivo studies have shown that there is thermal heterogeneity in human carotid atherosclerotic plaques. METHODS AND RESULTS...
OBJECTIVE DKK3 (dickkopf 3), a 36-kD secreted glycoprotein, has been shown to be involved in the differentiation of partially reprogrammed cells and embryonic stem cells to smooth muscle cells (SMCs), but little is known about its involvement in vascular disease. This study aims to assess the effects of DKK3 on atherosclerotic plaque composition. APPROACH AND RESULTS In the present study, we ...
AIMS MMPs contribute to atherosclerotic plaque progression and instability, but the relative potency of their endogenous tissue inhibitors of metalloproteinases (TIMPs) as protective factors has not been defined. We therefore investigated the impact of TIMP-1 and TIMP-2 knockout on atherosclerotic plaque burden and composition in apolipoprotein E-knockout (Apoe(-/-)) mice and studied the underl...
AIMS/INTRODUCTION An elevated level of plasma homocysteine has long been suspected as a metabolic risk factor for the development of atherosclerotic vascular diseases in diabetes. Berberine (BBR) has several preventive effects on cardiovascular diseases. The effects of BBR on atherosclerotic plaque stability increased by homocysteine thiolactone (HTL) remain unknown. MATERIALS AND METHODS The...
OBJECTIVE Although it has been reported that matrix metalloproteinase (MMP)-2 is a major proteinase in atherosclerotic plaque lesions, there is no direct evidence of the role of MMP-2 in atherosclerotic lesion formation. In the present study we determined the role of MMP-2 in atherosclerosis plaque development using apolipoprotein E-deficient (apoE(-/-)) mice. METHODS AND RESULTS To generate ...
To the Editor-According to Campbell et al. [1] in their recent study of Chlamydia pneumoniae in coronary tissue, staining with a Chlamydia-specific monoclonal antibody detected chlamydiae in 45% of the atherectomy specimens from patients with atherosclerotic plaque. However, staining appeared only in macrophages; smooth muscle cells did not stain, a result that appears to contradict previous fi...
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