Oxidized low-density lipoprotein (OxLDL) and autoantibodies to OxLDL (aOxLDL) are implicated in the development of atherosclerosis. The objective of this study was to determine the importance of these factors in hypertension, a major risk factor for atherosclerosis. Samples were obtained from 111 men with established hypertension (diastolic pressure >95 mmHg) from the Swedish component of an on...

High-density lipoprotein (HDL) cholesterol level is low in dialysis patients. The HDL that is present is dysfunctional, failing to protect low-density lipoprotein (LDL) from oxidation and reduce levels of oxidized LDL. Addition of the orally absorbable amphipathic peptide 4-F to LDL obtained from dialysis patients protects LDL from oxidation in vitro and reduces the capacity of oxidized LDL to ...

OBJETIVE To establish association between socioeconomic status and plasmatic markers of lipoperoxidation and antioxidants in Venezuelan school-age children from the middle-class and in critical poverty. METHODS Cross-sectional study with a sample of 114 school-age children (aged 7-9). The socioeconomic status, dietary intake of macro and micro-nutrients, weight, height, lipid profile, indicat...

Although ascorbic acid (ASA) is known as a water-soluble antioxidant, we found that it accelerated the cytotoxicity induced by oxidized low-density lipoprotein (OxLDL) in vitro. This suggests that ASA may enhance the oxidation of LDL to augment the atherogenic activities of OxLDL under certain conditions. Thus, this study was designed to investigate the underlying mechanism that ASA enhances Ox...

BACKGROUND Several clinical studies of statin therapy have demonstrated that lowering low-density lipoprotein (LDL) cholesterol prevents atherosclerotic progression and decreases cardiovascular mortality. In addition, oxidized LDL (oxLDL) is suggested to play roles in the formation and progression of atherosclerosis. However, whether lowering oxLDL alone, rather than total LDL, affects atheroge...

Oxidized low-density lipoproteins (Ox-LDL) have been shown to be involved in the pathogenesis of atherosclerosis. Because of the similarities between atherosclerosis and focal glomerulosclerosis, a study was performed to demonstrate whether Ox-LDL could be detected in the glomeruli in experimental FGS. FGS was induced in 12 rats on a 4% cholesterol-1% choline diet by seven injections of puromyc...

OBJECTIVE Plasma platelet-activating factor (PAF) acetylhydrolase (AH) is an enzyme bound with lipoproteins that degrades not only PAF but also PAF-like oxidized phospholipids that are proposed to promote atherosclerosis. In this study, we investigated the distribution of PAF-AH protein among lipoprotein classes by using adenovirus-mediated gene transfer in mice, and we examined its effects on ...

It has been reported that green tea consumption reduces the risk of coronary artery disease and cardiac events. Catechin is a major constituent of Japanese green tea and an antioxidant. Lipids and oxidization of low-density lipoprotein cholesterol (LDL-C) play important roles in atherosclerosis. Therefore, we evaluated the effect of catechin intake on the lipid profile and plasma oxidized LDL. ...

An elevated level of low density lipoprotein (LDL) cholesterol constitutes a major risk factor for atherosclerotic disease. Although the precise mechanism(s) via which LDL promotes atherogenesis remains to be elucidated, the oxidative modification of LDL may be a crucial mechanism. Several lines of evidence support a role for oxidatively modified LDL in atherogenesis. LDL can be oxidatively mod...