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      Attenuation of atherogenic apo B-48-dependent hyperlipidemia and high density lipoprotein remodeling induced by vitamin C and E combination and their beneficial effect on lethal ischemic heart disease in mice

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          Abstract

          Background and aims

          Atherosclerotic cardiovascular disease is highly prevalent and its underlying pathogenesis involves dyslipidemia including pro-atherogenic high density lipoprotein (HDL) remodeling. Vitamins C and E have been proposed as atheroprotective agents for cardiovascular disease management. However, their effects and benefits on high density lipoprotein function and remodeling are unknown. In this study, we evaluated the role of vitamin C and E on non HDL lipoproteins as well as HDL function and remodeling, along with their effects on inflammation/oxidation biomarkers and atherosclerosis in atherogenic diet-fed SR-B1 KO/ApoER61 h/h mice.

          Methods and results

          Mice were pre-treated for 5 weeks before and during atherogenic diet feeding with vitamin C and E added to water and diet, respectively. Compared to a control group, combined vitamin C and E administration reduced serum total cholesterol and triglyceride levels by decreasing apo B-48-containing lipoproteins, remodeled HDL particles by reducing phospholipid as well as increasing PON1 and apo D content, and diminished PLTP activity and levels. Vitamin supplementation improved HDL antioxidant function and lowered serum TNF-α levels. Vitamin C and E combination attenuated atherogenesis and increased lifespan in atherogenic diet-fed SR-B1 KO/ApoER61 h/h mice.

          Conclusions

          Vitamin C and E administration showed significant lipid metabolism regulating effects, including HDL remodeling and decreased levels of apoB-containing lipoproteins, in mice. In addition, this vitamin supplementation generated a cardioprotective effect in a murine model of severe and lethal atherosclerotic ischemic heart disease.

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          Most cited references35

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          Vitamin E consumption and the risk of coronary heart disease in men.

          The oxidative modification of low-density lipoproteins increases their incorporation into the arterial intima, an essential step in atherogenesis. Although dietary antioxidants, such as vitamin C, carotene, and vitamin E, have been hypothesized to prevent coronary heart disease, prospective epidemiologic data are sparse. In 1986, 39,910 U.S. male health professionals 40 to 75 years of age who were free of diagnosed coronary heart disease, diabetes, and hypercholesterolemia completed detailed dietary questionnaires that assessed their usual intake of vitamin C, carotene, and vitamin E in addition to other nutrients. During four years of follow-up, we documented 667 cases of coronary disease. After controlling for age and several coronary risk factors, we observed a lower risk of coronary disease among men with higher intakes of vitamin E (P for trend = 0.003). For men consuming more than 60 IU per day of vitamin E, the multivariate relative risk was 0.64 (95 percent confidence interval, 0.49 to 0.83) as compared with those consuming less than 7.5 IU per day. As compared with men who did not take vitamin E supplements, men who took at least 100 IU per day for at least two years had a multivariate relative risk of coronary disease of 0.63 (95 percent confidence interval, 0.47 to 0.84). Carotene intake was not associated with a lower risk of coronary disease among those who had never smoked, but it was inversely associated with the risk among current smokers (relative risk, 0.30; 95 percent confidence interval, 0.11 to 0.82) and former smokers (relative risk, 0.60; 95 percent confidence interval, 0.38 to 0.94). In contrast, a high intake of vitamin C was not associated with a lower risk of coronary disease. These data do not prove a causal relation, but they provide evidence of an association between a high intake of vitamin E and a lower risk of coronary heart disease in men. Public policy recommendations with regard to the use of vitamin E supplements should await the results of additional studies.
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            Inflammatory remodeling of the HDL proteome impairs cholesterol efflux capacity.

            Recent studies demonstrate that HDL's ability to promote cholesterol efflux from macrophages associates strongly with cardioprotection in humans independently of HDL-cholesterol (HDL-C) and apoA-I, HDL's major protein. However, the mechanisms that impair cholesterol efflux capacity during vascular disease are unclear. Inflammation, a well-established risk factor for cardiovascular disease, has been shown to impair HDL's cholesterol efflux capacity. We therefore tested the hypothesis that HDL's impaired efflux capacity is mediated by specific changes of its protein cargo. Humans with acute inflammation induced by low-level endotoxin had unchanged HDL-C levels, but their HDL-C efflux capacity was significantly impaired. Proteomic analyses demonstrated that HDL's cholesterol efflux capacity correlated inversely with HDL content of serum amyloid A (SAA)1 and SAA2. In mice, acute inflammation caused a marked impairment of HDL-C efflux capacity that correlated with a large increase in HDL SAA. In striking contrast, the efflux capacity of mouse inflammatory HDL was preserved with genetic ablation of SAA1 and SAA2. Our observations indicate that the inflammatory impairment of HDL-C efflux capacity is due in part to SAA-mediated remodeling of HDL's protein cargo.
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              Vitamin E suppresses isoprostane generation in vivo and reduces atherosclerosis in ApoE-deficient mice.

              Oxidative modification of low density lipoprotein (LDL) has been implicated in atherogenesis. Evidence consistent with this hypothesis includes the presence of oxidized lipids in atherosclerotic lesions, the newly discovered biological properties conferred on LDL by oxidation and the acceleration of atherogenesis by in vivo delivery of the gene for 15-lipoxygenase, an oxidizing enzyme present in atherosclerotic lesions. However, it is still unknown whether oxidative stress actually coincides with the evolution of the disease or whether it is of functional relevance to atherogenesis in vivo. Isoprostanes are products of arachidonic acid catalyzed by free radicals, which reflect oxidative stress and lipid peroxidation in vivo. Elevation of tissue and urinary isoprostanes is characteristic of human atherosclerosis. Here, deficiency in apolipoprotein E in the mouse (apoE-/-) resulted in atherogenesis and an increase in iPF2alpha-VI, an F2-isoprostane, in urine, plasma and vascular tissue. Supplementation with vitamin E significantly reduced isoprostane generation, but had no effect on plasma cholesterol levels in apoE-/- mice. Aortic lesion areas and iPF2alpha-VI levels in the arterial wall were also reduced significantly by vitamin E. Our results indicate that oxidative stress is increased in the apoE-/- mouse, is of functional importance in the evolution of atherosclerosis and can be suppressed by oral administration of vitamin E.
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                Author and article information

                Contributors
                secontre@uc.cl
                pxchen@uc.cl
                mandia@med.puc.cl
                suribe@med.puc.cl
                pim@ing.puc.cl
                susanne.kopp@medunigraz.at
                sabine.kern@medunigraz.at
                gunther.marsche@medunigraz.at
                dbusso@med.puc.cl
                christian.wadsack@medunigraz.at
                +56 2 2354 3836 , arigotti@med.puc.cl
                Journal
                Biol Res
                Biol. Res
                Biological Research
                BioMed Central (London )
                0716-9760
                0717-6287
                15 September 2018
                15 September 2018
                2018
                : 51
                : 34
                Affiliations
                [1 ]ISNI 0000 0001 2157 0406, GRID grid.7870.8, Department of Nutrition, Diabetes and Metabolism, School of Medicine, , Pontificia Universidad Católica de Chile, ; Diagonal Paraguay #362 - 4º, Piso, 8330024 Santiago, Chile
                [2 ]ISNI 0000 0001 2157 0406, GRID grid.7870.8, Department of Radiology, School of Medicine, , Pontificia Universidad Católica de Chile, ; Santiago, Chile
                [3 ]ISNI 0000 0001 2157 0406, GRID grid.7870.8, Center of Molecular Nutrition and Chronic Diseases, School of Medicine, , Pontificia Universidad Católica de Chile, ; Santiago, Chile
                [4 ]ISNI 0000 0001 2157 0406, GRID grid.7870.8, Biomedical Imaging Center, School of Engineering, , Pontificia Universidad Católica de Chile, ; Santiago, Chile
                [5 ]ISNI 0000 0001 2157 0406, GRID grid.7870.8, Department of Electrical Engineering, School of Engineering, , Pontificia Universidad Católica de Chile, ; Santiago, Chile
                [6 ]ISNI 0000 0000 8988 2476, GRID grid.11598.34, Department of Obstetrics and Gynecology, , Medical University of Graz, ; Graz, Austria
                [7 ]ISNI 0000 0000 8988 2476, GRID grid.11598.34, Institute of Experimental and Clinical Pharmacology, , Medical University of Graz, ; Graz, Austria
                Article
                183
                10.1186/s40659-018-0183-6
                6138920
                30219096
                a0918744-d49c-43f9-9cae-08c3d6a3e70a
                © The Author(s) 2018

                Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License ( http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver ( http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

                History
                : 20 May 2018
                : 6 September 2018
                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100002850, Fondo Nacional de Desarrollo Científico y Tecnológico;
                Award ID: 1110712-1150399
                Award ID: 21120282
                Award ID: 1141236
                Award ID: ACT1416
                Award Recipient :
                Funded by: FundRef http://dx.doi.org/10.13039/501100004955, Österreichische Forschungsförderungsgesellschaft;
                Award ID: 4354192
                Award Recipient :
                Categories
                Research Article
                Custom metadata
                © The Author(s) 2018

                hdl,vitamin c and e,serum lipids,atherosclerosis
                hdl, vitamin c and e, serum lipids, atherosclerosis

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