Active clinical trials for "Atherosclerosis"

To evaluate the clinical benefits and risks of hybrid operating techniques in management of intracranial aneurysms with coexistence of atherosclerotic intracranial arterial stenosis.

Mental stress-induced myocardial ischemia(MSIMI) has been recognized a significant clinical problem. Evidence has shown that individuals with MSIMI have 2 to 2.5 times higher risk to develop a major averse cardiovascular events over 3-5 years, compared to their counterparts who have no MSIMI. Nevertheless, investigations into the study of MSIMI among women who have chest pain but artery stenosis < 50% have been lacking. In this project, the investigators used positron emission tomography (PET) to evaluate perfusion defect during mental stress to diagnose MSIMI. Women with chest pain and coronary artery stenosis < 50% were included as the experimental group, age-matched healthy people as the control group, the aim of this study is to compare the incidence of MSIMI in the two groups. At the same time, the study also observe the change of MBF during mental stress and the relationship between MBF and MSIMI.

one-centered, open, non-randomized, controlled clinical trial will focus on a comprehensive study of the clinical, functional and molecular biochemical characteristics of the natural course of COPD in combination with peripheral atherosclerosis

In patients with chronic illness, screening for falls and their health consequences are major public health issues. Muscle weakness, gait and balance disorders are among the most common risk factors for falling. Assessing these parameters would thus be a crucial step in the evaluation of the risk of falling, allowing to more precisely orient the management strategy. Combining inertial unit sensors with clinically validated tests can provide additional information to improve the assessment of fall risks. We therefore propose to constitute a monocentric exploratory study, testing a prognostic screening tool, in patients suffering from a chronic pathology, in order to assess the risk of falling in this population. Considering the relationship between muscle weakness and the risk of falling, we can assume that a deficit in muscle strength will result in less vertical acceleration which could point to a muscle cause of the balance disorder and thus allow a finer detection of the risk of falling. On the other hand, we hypothesize that spinal static disorders in chronic pathologies and in particular osteoarthritis, as well as balance disorders linked to impaired deep sensitivity lead to an increase in oscillations of the trunk when walking which can cause postural balance disorders thus increasing the risk of falling.

The study aimed to prospectively investigate the prevalence of myocardial scar on Dotarem-enhanced Cardiovascular Magnetic Resonance Imaging (MRI) in asymptomatic patients with type-2 Diabetes Mellitus and to assess its correlation with subclinical coronary artery disease on Cardiac Computed Tomography Angiography (CCTA).

Inflammation in the vascular wall is important in atherosclerosis and the blockage of the artery. The peripheral benzodiazepine receptor is involved in inflammation and in this protocol we will attempt to take pictures, using PET camera, of inflammation in patients with atherosclerosis and compare those of healthy people.

This study will test how well a new contrast agent (dye) used in magnetic resonance imaging (MRI) can help visualize totally blocked arteries that normally supply blood to the neck, arms or legs. Currently used agents work well in visualizing normal or partly blocked arteries (arteries that have some blood flowing through them), but only poorly in totally blocked arteries. This study will see if a contrast agent called gadofosveset can better brighten images of completely blocked arteries. Gadofosveset is approved in Europe for use in MRI scans, but is still considered experimental in the United States. People 18 years of age or older with known or suspected total blockage of an artery to the neck, arm or leg may be eligible for this study. Participants undergo MRI scanning with gadofosveset contrast dye. MRI uses a magnetic field and radio waves to produce images of body tissues and organs. For this procedure, the subject lies on a table that can slide in and out of the tubular scanner, wearing earplugs to muffle loud noises that occur during the scanning process. The procedure lasts about 1.5 to 2 hours, during which the subject may be asked to hold his or her breath several times for as long as 5 to 20 seconds. During the procedure, gadofosveset is injected and several kinds of MRI pictures are taken to understand better how the new agent works. Subjects may be asked to undergo a second scan using conventional MRI contrast dye

Preliminary studies have shown that flaxseed powder, rich in the omega-3 alpha-linolenic acid,is beneficial for the general inflammation present in morbidly obese subjects by decreasing elevated serum markers.As omega-3 fatty acids display additional properties including possible amelioration of atherosclerosis,a 3-month supplementation protocol was devised.Arterial stiffness and intima thickness will be measured in severely obese subjects, in order to document possible reduction of these variables as well.

The overall goal of this study is to use MRI to: Examine the relationship between known risk factors for cardiovascular disease and coronary artery wall thickness; Examine the relationship between coronary artery wall thickness and other markers of subclinical coronary atherosclerosis, such as carotid wall thickness and coronary calcium scores; and, Examine the feasibility of measuring the progression of coronary artery wall thickness over time in a subset of participants.

To demonstrate feasibility of imaging Cu[64]-25%-CANF-Comb uptake in the atherosclerosis of the carotid artery of patients for whom carotid artery endarterectomy surgery is planned in comparison to the carotid artery for which intervention is not planned.