View clinical trials related to Cardiovascular Disease.
Filter by:Complaints about memory and thinking are common in women as they go through menopause and estrogen levels fall. The ovarian hormone estrogen is important for supporting normal cognitive function, and changes in brain activity and function occur when estrogen levels are decreased. Estrogen is also important for maintaining healthy blood vessels which also support normal cognitive function. In Alzheimer's disease and other types of dementia, there is significant damage to the blood vessels in the brain. This study will test whether changes in brain activity and function with the loss of estrogen are related to changes in vascular function. The investigators will measure vascular function using ultrasound, and brain activity using MRI scans in women who are enrolled in the Females, Aging, Metabolism and Exercise (FAME) study (NCT01712230). In the FAME study, healthy premenopausal women either take a medication to decrease their estrogen levels, or a placebo. This sub-study may provide new information about how estrogen affects vascular function and cognitive function, and lead to new ways to prevent or delay cognitive impairment or dementia.
The aim of this study is the comparison between the effects of supplementation with omega 3 or placebo for 8 weeks in serum level of BMP-4, YKL40, HSP70, HSP27 in patients with cardiovascular disease.
Although weight reduction through physical activity-based interventions is the mainstay therapy for nonalcoholic fatty liver disease (NAFLD), its maintenance is difficult and typically unsuccessful. This affirms the extreme need for alternate and/or adjunct therapies. Although convincing data from animal studies and a few adult human studies on the benefits of a natural product, N-acetyl cysteine (NAC), in a variety of liver conditions including NAFLD have emerged, studies in children are scarce. Therefore, the aim of the study is to test the use NAC as an innovative approach to attenuate the progression of NAFD in obese children with biopsy proven NASH. The central hypothesis is that NAC supplementation will reduce liver fat and liver enzymes and ameliorate risk factors of cardiometabolic disease in children with NAFLD.
The primary goal of this Multicenter Study is to develop and to evaluate a method for measuring donor-specific cell free DNA in blood samples from transplant recipients as markers of rejection. Blood samples obtained periodically from heart transplant recipients are assessed for cell free DNA relative to clinical data in order to determine whether changes in the level of cell free DNA indicate rejection. This research study proposes testing a blood sample obtained from the heart transplant recipient. The research seeks to establish whether this blood test will show when the patient is beginning to or already rejecting the transplanted heart. BACKGROUND Identifying if a transplant patient is beginning to or already rejecting the heart is necessary, so that appropriate treatment can be started to halt the rejection. Heart catheterization with biopsy is the usual method used for assessing whether a patient may be rejecting the heart. There are also a number of other methods that transplant physicians will use to look for signs of rejection including other blood tests, echocardiograms, obtaining pressure readings during heart catheterization, and micro-array testing of blood obtained during biopsy. These technologies are limited in ability to consistently and accurately identify the presence of rejection. The usual method of checking for rejection involves obtaining a sample of the heart tissue (heart biopsy); biopsy can only be accomplished through heart catheterization which is an invasive procedure that has risks associated with disturbing the heart such as puncturing the heart or causing the heart rate to change or damaging tissue in the heart. Overtime, repeating this invasive procedure can diminish the ease of the procedure because the veins can become scarred and more difficult to access. For these reasons, researchers believe that it would be good to have a blood test that gives information about the possibility of rejection so that it may not be necessary to do as many heart biopsies. Also, a blood test may be able to provide information about the heart or about rejection that is currently not available at all.
Pathological and clinical studies have consistently demonstrated that abnormalities in thrombosis and hemostasis play a major role in the pathogenesis of atherosclerosis and atherothrombosis. Screening for abnormalities in thrombosis and hemostasis by measuring platelet activity, thrombin generation, and markers of coagulation have been proposed to identify individuals at high-risk for cardiovascular events, however, it remains a research tool not ready for implementation in standard care. The proposed study will add to the growing understanding of platelet activity and markers of coagulation in cardiovascular disease; examine a comprehensive battery of platelet activity markers, thrombin generation, markers of coagulation, and inflammatory biomarkers in subjects undergoing vascular surgery; and will provide important data on the mechanism of increased platelet activity using micro RNA, RNA and DNA expression profiling. The study design is prospective and the main outcome measures are platelet activity, coagulation markers and incident cardiovascular and bleeding events.
The objective of this study is to determine whether a community-based salt reduction program can reduce average salt consumption levels. Baseline levels of salt consumption were measured in 2011, the salt reduction program was then implemented, and now in 2014 investigators are remeasuring salt consumption levels in the community. The hypothesis investigators are testing is that the salt reduction program will have led to a change in salt consumption levels between 2011 and 2014. The study is being done in Lithgow, a regional town in New South Wales , Australia.
The aim of this study is the comparison between the effects of supplementation with omega 3 or placebo for 8 weeks in serum level of IGF-1 and IGFBP-3 and gene expression of IGF-1 in patients with cardiovascular disease.
Evaluation of the metabolic and physiological characteristics of patients with diagnosed Cardiovascular Disease following administration of the Cardiovascular vitamin, CardioLife.
The objective was to compare the frequency and intensity of symptoms of anxiety in patients of preoperative cardiac surgery who received empathic behaviour from nurse or family or those who received no specific type of empathic behaviour. This is a randomized clinical trial. The sample consisted of 66 patients in preoperative of cardiac surgery, who were divided in three groups: empathic behaviour by nurses, without specific empathic behaviour and by family. Anxiety was assessed at two time points: before and after the intervention. The instrument used was developed and validated, comprising 19 defining characteristics of the nursing diagnosis anxiety. The hypothesis is that the group who received empathic behaviour from nurse or family will reduce the anxiety.
The reverse cholesterol transport (RCT) pathway, which involves the centripetal movement of free cholesterol from peripheral tissues, including the vessel wall, to the liver represent the primary mechanism by which HDL protects against atherosclerosis and by which it may induce plaque regression. Recent data reveal that the capacity of HDL to efflux cholesterol from macrophages, a metric of HDL function reflecting the initial step of the RCT, is clinically relevant, displaying a strong inverse association with both carotid intima-media thickness and the severity of angiographic CAD; such observations were independent of HDL-C levels. In human, the Cholesteryl Ester Transfer Protein (CETP), represents a key protein of the RCT pathway and mediates redistribution of neutral lipids between lipoproteins, has been identified as a potential therapeutic target against atherosclerosis. It is known that CETP activity correlates with HDL-C levels and represents a key modulator of the ability of whole plasma to mediate free cholesterol efflux from human macrophages. Recent studies showed that 23% of endogenous plasma CETP activity variability is explained by plasma LDL-C (12.0%), HDL-C (6.4%) and TG (4.4%) whereas sex and BMI accounted together for only 0.7% of its variability. Scoring patients for cardiovascular risk on the basis of their plasma lipid levels (TC, TG, LDL-C and HDL-C), revealed that patients with high cardiovascular risk (score ≥3) displayed a mean endogenous plasma CETP activity above 34%. Therefore plasma CETP activity represents a potent indicator of cardiovascular risk in patients with metabolic disorders since it integrates major independent risk factors. The objective of this study is to decipher the relationship between CETP, HDL efflux capacity and the development of atherosclerosis in humans in order to identify CETP as a potent biomarker of atherosclerosis distribution.