OBJECTIVES Low levels of high-density lipoprotein (HDL) cholesterol are associated with an increased risk of acute myocardial infarction possibly through impaired endothelial atheroprotection and decreased nitric oxide (NO) bioavailability. Asymmetric dimethylarginine (ADMA) mediates endothelial function by inhibiting nitric oxide synthase activity. In patients with acute myocardial infarction,...

Clinical studies indicate that levels of apolipoprotein A-I (apo A-I), the major protein moiety of the high density lipoprotein (HDL) particle, may provide more information concerning the risk of future cardiovascular disease than do levels of HDL cholesterol (HDL-C). Therefore, the relationship of HDL-C to apo A-I levels was examined in a biracial sample of 2849 5- to 17-year-olds. The mean HD...

Clinical studies Indicate that levels of apolipoprotein A-l (apo A-l), the major protein moiety of the high density lipoprotein (HDL) particle, may provide more Information concerning the risk of future cardiovascular disease than do levels of HDL cholesterol (HDL-C). Therefore, the relationship of HDL-C to apo A-l levels was examined In a blraclal sample of 2849 5to 17-year-olds. The mean HDL-...

antioxidant, antithrombotic, and antiinflammatory properties of HDL particles (2). Interestingly, structural modifications of HDL mediated by various mechanisms, including glycation, oxidation, and enzymatic degradation, may affect their functional and atheroprotective properties (3). This may suggest that not only quantity but also quality of HDL particles play a role in the damage of endothel...

RATIONALE High-density lipoprotein (HDL) is a heterogeneous population of particles. Differences in the capacities of HDL subfractions to remove cellular cholesterol may explain variable correlations between HDL-cholesterol and cardiovascular risk and inform future targets for HDL-related therapies. The ATP binding cassette transporter A1 (ABCA1) facilitates cholesterol efflux to lipid-free apo...

Clinical studies Indicate that levels of apolipoprotein A-l (apo A-l), the major protein moiety of the high density lipoprotein (HDL) particle, may provide more Information concerning the risk of future cardiovascular disease than do levels of HDL cholesterol (HDL-C). Therefore, the relationship of HDL-C to apo A-l levels was examined In a blraclal sample of 2849 5to 17-year-olds. The mean HDL-...

The objective of this study was to determine whether high density lipoproteins (HDL) that have been treated with hepatic lipase have an enhanced ability to deliver cholesterol to cells. Human HDL was incubated with rat hepatic lipase, reisolated, and subjected to compositional analysis. Approximately 28% of the HDL phosphatidylcholine was hydrolyzed by the hepatic lipase but no change was detec...

BACKGROUND low HDL-C levels are important predictors of coronary disease, the first cause of death worldwide. Many factors affect HDL-C levels, such as polymorphisms of genes encoding for key proteins of the reverse cholesterol transport pathway. OBJECTIVE to investigate the influence of seven polymorphisms of the CETP, APOA1, ABCA1 and SCARB1 genes on HDL-C levels in a southern Brazilian pop...

The HDL hypothesis stating that simply raising HDL cholesterol (HDL-C) may produce cardiovascular benefits has been questioned recently based on several randomized clinical trials using CETP inhibitors or niacin to raise HDL-C levels. However, extensive pre-clinical data support the vascular protective effects of administration of exogenous ApoA-1 containing preβ-HDL like particles. Several sma...