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93 active trials for Cardiovascular Disease

Clinico-biological Collection of Subjects With Hyper Lipoprotein a in Reunion Island

Cardiovascular disease (CVD) is the second leading cause of death in France and the leading cause of death on Reunion Island. Some modifiable risk factors for cardiovascular diseases are well identified and can be easily modulated, in particular by hygiene and dietetic measures (tobacco, sedentary lifestyle). Other risk factors such as high blood pressure, diabetes or dyslipidemia can also be pharmacologically modulated. On the other hand, there is a cardiovascular risk factor that we do not know how to modulate: a high level of lipoprotein (a) (Lp (a)), whose regulation remains largely unknown. High plasma levels of Lipoprotein (a) remain a major risk for the development of cardiovascular disease and its clinical complications, which no drug can currently reduce. Understanding the biological and genetic determinants modulating Lp (a) levels remains a major challenge for treating subjects with hyper Lp (a). Several individuals and possibly Reunion families have been detected as having abnormally high rates of apo (a) Thanks to the link between cardiovascular clinical picture, Lp (a) concentration and other biological markers, the study should allow a better understanding of the mechanisms underlying the cardiovascular risk in order to offer advice. prevention and care of at-risk subjects screened; or even avenues for adapted genetic counseling (DNA sequencing). At the genetic level, several hypotheses could be explored making it possible to link the expression of the apo (a) protein to the genotype, in particular the presence of mutations in the gene, in the promoter region, polymorphisms, or epistatic regulation.

Start: September 2020
CADASIL Disease Discovery

Cerebral autosomal dominant arteriopathy with subcortical infarct (CADASIL) is a lethal disease caused by a gene mutation that affects arteries in the brain. Symptoms include migraines, strokes, memory loss, and dementia. There are no treatments. Researchers want to study people who have CADASIL to learn more about it. Objectives: To learn more about CADASIL by studying people who have it. Eligibility: People ages 18-100 who were diagnosed with CADASIL in the past 5 years and can make their own decisions Design: Participants will be screened in another NIH protocol. Participants will have 3 visits over 2 years. These may include: Physical exam Thinking and concentration tests Blood tests Skin biopsy: A small skin punch is removed from the arm or leg Eye exam and eye imaging tests Fluorescein angiogram: A catheter is placed in an arm vein. Dye is given through the catheter and travels to the eyes. EndoPAT: A small clamp on the fingertip measures blood volume. Cardio-ankle vascular index (CAVI): Artery stiffness is tested with blood pressure cuffs on the arms and legs. Soft electrodes on the skin measure heart signals. Brain MRI or MRA: They lie on a table that slides in and out of a tube that takes pictures. They may get a contrast agent in their vein. It brightens the brain so researchers can see where blood flows. CT scan of the heart: They lie on a table that slides in and out of a machine that takes pictures. They get contrast dye injected through a catheter. They may get a medicine that makes their blood vessels bigger or slows their heart rate.

Start: October 2016
Links Between Inflammation and Cardiometabolic Diseases

Background: - Cardiometabolic diseases are a combination of medical disorders that, when they occur together, increase the risk of heart disease and diabetes. Researchers want to learn if there is a relationship between these diseases and inflammation (redness, swelling, and pain). Inflammation affects the entire body. Researchers will study this relationship in people with heart disease and diabetes, and compare it to healthy people. Objectives: - To learn if there are links between inflammation and cardiometabolic diseases. Eligibility: Adults 18 years of age or older with heart disease or diabetes. Healthy volunteers 18 years of age or older. Design: Participants will have up to six study visits. There will be first visit, then an optional visit 12 months after the first visit. At the study visits they will have: Blood taken with a needle in their arm. An electrocardiogram. Small patches are stuck to the chest and limbs. A machine measures electrical signals of the heart. Completed a number of questionnaires. A body scan called an FDG PET/CT. A substance will be injected through a tube in their arm. They will lie on a special bed that will move in and out of the PET/CT scanner. The PET/CT scanner will take pictures of the body. The scan will last up to 30 minutes. Some participants will have other body scans ( FDG PET/MRI). The procedures are similar to the FDG PET/CT scan. These other scans will last about 30 minutes total. Some participants will also have a CT scan of their heart. A substance will be injected through a tube in their arm. They will lie on a table in a large, donut-shaped machine. An X-ray tube will move around their body, taking many pictures. This procedure can last up to 2 hours. Some participants will have tests that measures blood pressure and how the blood moves through the body. Some participants will have small samples of skin and fat tissue taken.

Start: December 2013
Williams Syndrome (WS) and Supravalvular Aortic Stenosis (SVAS) DNA and Tissue Bank

Background: DNA tells the body how to grow and function. Williams-Beuren syndrome (WS) and Supravalvular Aortic Stenosis (SVAS) are rare diseases caused by changes in a part of a person s DNA. Symptoms of both conditions include vascular problems including narrow blood vessels and supravalvular aortic stenosis (SVAS) or supravalvular pulmonary stenosis. Individuals with WS may also have developmental challenges and personality differences. Researchers at the NIH want to find out why only some people with WS and SVAS have severe symptoms. They want to collect samples and data to see what DNA or environmental changes affect the severity of the disease. Objective: To identify the DNA differences or environmental changes that change the severity of WS and SVAS from person to person. Eligibility: People ages 0 85 with either WS, SVAS, and/or an SVAS-like condition Children and people with WS must have a parent or legal guardian to consent or help answer questions. Design: Participants will be screened with questions and medical history. Participants will have a 60-minute visit. They will provide blood or saliva samples. They or their parent/guardian will: Answer questions about how WS and SVAS affect them. Sign a form releasing their medical records for the study. If participant s regular doctor recommends surgery, researchers will ask the surgeon for skin or tissue samples that they might otherwise discard. These will be used to create stem cells to study in a lab. For up to 20 years, participants will have annual questionnaires by phone, email, or mail about their WS or SVAS. Participants may also be contacted if: They need to provide a new blood or saliva sample. Researchers need any other data. There is a follow-up study.

Start: May 2016
Patient-Centred Innovations for Persons With Multimorbidity - Ontario

The aim of Patient-Centred Innovations for Persons With Multimorbidity (PACE in MM) study is to reorient the health care system from a single disease focus to a multimorbidity focus; centre on not only disease but also the patient in context; and realign the health care system from separate silos to coordinated collaborations in care. PACE in MM will propose multifaceted innovations in Chronic Disease Prevention and Management (CDPM) that will be grounded in current realities (i.e. Chronic Care Models including Self-Management Programs), that are linked to Primary Care (PC) reform efforts. The study will build on this firm foundation, will design and test promising innovations and will achieve transformation by creating structures to sustain relationships among researchers, decision-makers, practitioners, and patients. The Team will conduct inter-jurisdictional comparisons and is mainly a Quebec (QC) - Ontario (ON) collaboration with participation from 4 other provinces: British Columbia (BC); Manitoba (MB); Nova Scotia (NS); and New Brunswick (NB). The Team's objectives are: 1) to identify factors responsible for success or failure of current CDPM programs linked to the PC reform, by conducting a realist synthesis of their quantitative and qualitative evaluations; 2) to transform consenting CDPM programs identified in Objective 1, by aligning them to promising interventions on patient-centred care for multimorbidity patients, and to test these new innovations' in at least two jurisdictions and compare among jurisdictions; and 3) to foster the scaling-up of innovations informed by Objective 1 and tested/proven in Objective 2, and to conduct research on different approaches to scaling-up. This registration for Clinical Trials only pertains to Objective 2 of the study.

Start: January 2016
Hybrid Effectiveness-Implementation Study to Improve Clopidogrel Adherence

Percutaneous coronary intervention (PCI) is a common invasive cardiovascular procedure performed in the VA with over 13,000 procedures in FY10. Clopidogrel is a critical adjuvant therapy following PCI with stent placement and is generally recommended for up to 1 year following the procedure. Despite the evidence supporting clopidogrel use, studies both outside and within the VA suggest that poor adherence to clopidogrel is common. However, prior interventions targeting non-adherence have not specifically focused on clopidogrel adherence among PCI patients. There are many potential reasons for early clopidogrel discontinuation that involve patient and healthcare system factors. Patients reported the following reasons for discontinuing clopidogrel within 1 month after drug-eluting stent (DES) implantation: 1) misunderstanding the intended treatment duration; 2) conflicting recommendations about intended duration; 3) cost of the medication; and 4) patients' own decision to stop. In contrast, patients who continued to take clopidogrel reported the following as helpful: 1) communication such as letters from their physician; and 2) receiving specific instructions on clopidogrel use. These findings suggest that there are specific interventions that can be implemented to improve clopidogrel adherence. Multi-modal interventions that incorporate frequent follow-up, especially with pharmacists and use interactive voice response (IVR) technology have improved medication adherence. IVR technology is a computer-based telephone system which initiates calls, receives calls, provides information, and collects data from users. IVR is currently a mainstay in the VA where patients frequently interact with these automated systems to get clinic appointments and/or refill prescriptions. IVR as part of multi-modal interventions have been well received by patients, increased adherence to medications (e.g., statins), and improved clinical outcomes (e.g., blood pressure, diabetes symptoms, health status). In addition, the investigators have successfully used IVR as part of a multi-modal, multi-site intervention including pharmacists to improve blood pressure levels among hypertensive patients. Accordingly, the investigators have designed the intervention to improve clopidogrel adherence that builds on the investigators' prior work and other successful adherence interventions from the literature. The investigators propose a hybrid effectiveness-implementation study of a multi-faceted intervention to improve clopidogrel adherence at VA PCI centers. The investigators will use the VA's Cardiovascular Assessment Reporting and Tracking (CART-CL), a uniform cath lab procedure reporting tool at all VA cath labs. The intervention consists of 4 components: a) an alert from CART-CL will be sent to an inpatient pharmacist prior to discharge that a patient has received a stent; b) a pharmacist will bring clopidogrel to the patient's bedside prior to hospital discharge as well as educate the patient on the importance of and adherence to clopidogrel following PCI; c) interactive voice response (IVR) calls will be made to patients prior to the time of clopidogrel refill to remind patients and to facilitate refills during follow-up; and d) a Patient Aligned Care Team (PACT) member will contact patients who delay filling clopidogrel.

Start: January 2014
Passive Limb Movement: A Tool to Assess Vascular Health and Guide Rehabilitation

Brief Summary: Current U.S. Veteran demographics reveal an aging population with significant cardiovascular dysfunction. This ultimately manifests as mobility limitation, inactivity, and a subsequent worsening of cardiovascular disease (CVD) that often leads to death. However, despite this clear negative cycle of events, there is not a single clinically accepted, and therefore routinely utilized, method of assessing vascular health. As nitric oxide (NO) is anti-atherogenic and cardioprotective, identifying an in vivo bioassay of NO bioavailability has significant worth in this arena. Fueled predominantly by the VA Merit Award prior to this renewal application, single passive leg movement (sPLM) and the subsequent blood flow increase, measured non-invasively by ultrasound Doppler in the common femoral artery, is emerging as a method by which vascular endothelial function and therefore NO bioavailability can be determined. However, although this work has yielded an initial characterization of sPLM and established this method to be a novel, valid, and a clinically relevant approach to determine vascular health, further understanding of the sPLM response with advancing age and, ultimately, its implementation and assessment in both rehabilitation and clinical arenas is still necessary. With the growing interest in personalized medicine, the development of tools, such as sPLM, that allow individualized assessments to guide the physician, the patient, and the rehabilitative team, are essential. Therefore, two specific aims are proposed that will address the Central Hypothesis that the sPLM paradigm provides a clinically meaningful assessment of endothelial function. First, cardiac rehabilitation will be assessed by sPLM in the elderly, and, coupled with studies in the young, will elucidate the predominant pathways responsible for the change in endothelial function with aging and rehabilitation. Second, the CVD diagnostic value of the sPLM assessment of endothelial function will be evaluated relative to classic measures and markers of subclinical disease in order accelerate the inclusion of endothelial dysfunction as a CVD risk factor. The proposed studies aim to catalyze the transition of the assessment of endothelial function by sPLM from research to clinical practice.

Start: September 2015