Active clinical trials for "Hypoalphalipoproteinemias"

The purpose of this study is to assess the impact of 29 intravenous infusions of CER-001 vs. placebo, given at weekly (9 infusions) and biweekly (20 infusions) intervals on carotid vessel wall area as measured by 3TMRI, when administered to patients with familial primary hypoalphalipoproteinemia with proven CVD and appropriate background lipid-lowering therapy.

A low level of plasma high-density lipoprotein (HDL) cholesterol, "the good cholesterol", is the most common lipid abnormality observed in patients with a premature atherosclerotic cardiovascular disease. HDL carry excess cholesterol from peripheral tissues to the liver to be metabolized or excreted, a process known as reverse cholesterol transport. Epidemiological studies have shown an inverse correlation between plasma levels of HDL cholesterol and the risk of cardiovascular disease. An increase in plasma HDL cholesterol levels by 1 mg/dL may reduce the risk of cardiovascular disease by 2 to 3%. The standard care of treatment for a low level of HDL cholesterol is: 1) lifestyle modifications including exercise, smoking cessation, weight control, moderate alcohol intake and decreased dietary fat intake - all patients are encouraged to follow these lifestyle modifications; 2) medications which can raise HDL cholesterol. Currently used medications to treat lipid disorders can increase, in some extent, HDL cholesterol. These include niacin (vitamin B3), fibric acid derivatives (fibrates) and statins. However there is no data on the effect of these medications on severe cases of HDL deficiency. This project aims to determine whether currently available medications, used in standard medical practice for the treatment of lipoprotein disorders, can substantially increase HDL cholesterol in severe cases of HDL deficiencies.

This is a randomized, open-label, single blind, clinical trial The study evaluated the effect of tomato consumption in serum HDL-cholesterol levels. The hypothesis was that two daily tomatoes during one month will increase the HDL-c levels. Since a placebo of tomatoes cannot be done, the control group will receive same proportion of cucumber because 1) it was not possible to have a tomato placebo; 2) cucumber does not have any lycopene; 3) both can be prepared similarly; and 4) the required quantity can be measured in the same way. The intervention was during 1 month and was assigned by randomization. Personnel who did the clinical and biochemical evaluation were blinded for the intervention. Lipid profile was measured before and after the intervention. Confounding factors such as daily physical activity, diet, consumption of fish or alcoholic beverages, smoking status were considered during statistical analyses.

The Habitual Diet and Avocado Trial will evaluate the effects of providing one avocado per day for recommended consumption over a 6 month period in a cohort of approximately 1000 free-living participants with increased waist circumference in comparison with a control group that will maintain their habitual diets. Participants will be recruited and screened at 4 clinics in 4 locations: Pennsylvania State University; Loma Linda University; UCLA, and Tufts University (250 per site).

Individuals with reduced plasma concentration of high-density lipoprotein (HDL) cholesterol are more susceptible to oxidative stress and often present reduced endothelial function, which has been mainly related to this susceptibility. Studies in animal and cell models have demonstrated that niacin activates both GPR-109A in leukocytes and heme oxygenase-1 (HO-1) pathway promoting strong anti-inflammatory and anti-oxidative effects. . In this context, the aim of this study was to investigate the short-term effect of niacin on endothelial function and verify the existence of interaction of PGD2 receptor antagonist, i.e. laropiprant (LRPT), in subjects with low HDL-cholesterol (HDL -C).

Myocardial infarction is a polygenic disease that may occur due to various environmental risk factors. Mortality risk of the disease; sex, age, smoking, systolic blood pressure, total cholesterol, and high-density lipoprotein levels. The paraoxonase-1 phenotype is expressed as the paraoxonase/arylesterase ratio and is closely related to high-density lipoprotein, acting as an endogenous defense mechanism against vascular oxidative stress, thus contributing to the prevention of atherosclerosis. Serum concentration and activity depend on environmental factors as well as genetic polymorphism. This decrease in enzyme concentration causes changes in gene expression (1). Numerous data on Paraoxonase-1 levels have been found in studies, especially with decreasing serum paraoxonase and arylesterase activities with age, associated with increased risk of systemic oxidative stress and atherosclerosis in humans. Many studies have shown that serum Paraoxonase-1 activity is significantly reduced in people with myocardial infarction, dyslipidemia, atherosclerosis, and chronic kidney disease. The most important risk factor for these and similar diseases is aging. Diversity of conditions such as genetic predisposition, malnutrition, stress, and smoking, which increases vascular dysfunction due to oxidative stress, classify individuals with acute myocardial infarction according to age groups and investigate whether there is a relationship between serum Paraoxonase-1 activity and severity of coronary artery disease in young patients. The paraoxonase-1 enzyme, which is known to decrease blood levels with age, is found to be significantly lower in patients with myocardial infarction at a young age compared to the healthy control group.

Adipose tissue secreting a number of adipokines which regulate insulin sensitivity, energy metabolism and vascular homeostasis, so the dysfunction of adipose tissue is linked with the incidence of obesity accompanied with insulin resistance, hypertension and cardiovascular disease (1). Obesity is known to alters the expression of adipokines due to the adipose tissue hypertrophy (2), including adiponectin, in which able to exert a potent anti-inflammatory and vascular protective effect (2). It has been proposed that adiponectin acts to prevent the vascular dysfunction due to obesity and diabetes by improves insulin sensitivity and metabolic profiles to reduce the risk factors for cardiovascular disease and protects the vasculature through its pleiotropic actions on endothelial cells, endothelial progenitor cells, smooth muscle cells and macrophages (1). The concentrations of adiponectin of 5 to 25 mg/mL had a significant inhibitory effect on the expression of monocyte adhesion and adhesion molecule induced by TNF-α in vitro. Atherosclerosis is an inflammatory disease in which adhesion molecules on arterial endothelial cells are responsible for the accumulation of monocytes/macrophages and T lymphocytes. While obesity is low-grade inflammation in which make a contribution on endothelial dysfunction by increasing the oxygen-derived free radicals (ROS) due to adipocyte hypertrophy, leads to an endoplasmic reticulum (ER) stress and mitochondrial dysfunction (3). Adiponectin is accumulated in the vasculature, and it reduced on obesity due to suppression by TNF-α and lead to adiponectin-deficiency which stimulate the significant increases of Vascular cell adhesion protein 1 (VCAM-1) and Intercellular Adhesion Molecule 1 (ICAM-1) or known as CD54 in aortic intima (4). Here we investigate the level of adiponectin, ICAM-1, VCAM-1 with the incidence of MetS in obese adolescents.

World Health Organization report notifies of the escalating global burden of cardiovascular diseases (CVD), projecting that it will become the major worldwide cause of death and disability by 2020. The South Asian countries have the highest rates of CVD globally. It is widely acknowledged that South Asians have 40-60% higher risk of CVD linked to mortality, compared with other populations. Multiple human population studies have established the concentration of high density lipoprotein (HDL) cholesterol as an independent, inverse predictor of the risk of having a cardiovascular event. Furthermore, HDLs have several well-documented functions with the potential to protect against cardiovascular disease. This study trial is designed to find out the role of intermittent fasting to improve the dyslipidemia and particularly increase the levels of HDL in general population. Investigators expect that the intermittent fasting will significantly enhance the level of HDL and reduce cardiovascular events in general population.