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      Vitamin C and Cardiovascular Disease: An Update

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          Abstract

          The potential beneficial effects of the antioxidant properties of vitamin C have been investigated in a number of pathological conditions. In this review, we assess both clinical and preclinical studies evaluating the role of vitamin C in cardiac and vascular disorders, including coronary heart disease, heart failure, hypertension, and cerebrovascular diseases. Pitfalls and controversies in investigations on vitamin C and cardiovascular disorders are also discussed.

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          Atherosclerosis — An Inflammatory Disease

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            Glutathione: overview of its protective roles, measurement, and biosynthesis.

            This review is the introduction to a special issue concerning, glutathione (GSH), the most abundant low molecular weight thiol compound synthesized in cells. GSH plays critical roles in protecting cells from oxidative damage and the toxicity of xenobiotic electrophiles, and maintaining redox homeostasis. Here, the functions and GSH and the sources of oxidants and electrophiles, the elimination of oxidants by reduction and electrophiles by conjugation with GSH are briefly described. Methods of assessing GSH status in the cells are also described. GSH synthesis and its regulation are addressed along with therapeutic approaches for manipulating GSH content that have been proposed. The purpose here is to provide a brief overview of some of the important aspects of glutathione metabolism as part of this special issue that will provide a more comprehensive review of the state of knowledge regarding this essential molecule.
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              Liposomes as nanomedical devices

              Since their discovery in the 1960s, liposomes have been studied in depth, and they continue to constitute a field of intense research. Liposomes are valued for their biological and technological advantages, and are considered to be the most successful drug-carrier system known to date. Notable progress has been made, and several biomedical applications of liposomes are either in clinical trials, are about to be put on the market, or have already been approved for public use. In this review, we briefly analyze how the efficacy of liposomes depends on the nature of their components and their size, surface charge, and lipidic organization. Moreover, we discuss the influence of the physicochemical properties of liposomes on their interaction with cells, half-life, ability to enter tissues, and final fate in vivo. Finally, we describe some strategies developed to overcome limitations of the “first-generation” liposomes, and liposome-based drugs on the market and in clinical trials.
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                Author and article information

                Journal
                Antioxidants (Basel)
                Antioxidants (Basel)
                antioxidants
                Antioxidants
                MDPI
                2076-3921
                03 December 2020
                December 2020
                : 9
                : 12
                : 1227
                Affiliations
                [1 ]Division of Cardiology, Department of Medicine, Institute of Aging Research, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, Montefiore University Hospital, New York, NY 10461, USA; marco.morelli@ 123456einsteinmed.org (M.B.M.); jessica.gambardella@ 123456einsteinmed.org (J.G.); vanecastellanos35@ 123456gmail.com (V.C.)
                [2 ]Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM), Einstein-Sinai Diabetes Research Center (ES-DRC), Albert Einstein College of Medicine, New York, NY 10461, USA
                [3 ]Department of Advanced Biomedical Sciences, “Federico II” University, 80131 Naples, Italy
                [4 ]International Translational Research and Medical Education (ITME), 80100 Naples, Italy
                [5 ]Department of Neuroscience, “Federico II” University, 80131 Naples, Italy
                Author notes
                [†]

                These authors contributed equally.

                Author information
                https://orcid.org/0000-0002-6500-5465
                https://orcid.org/0000-0001-7231-375X
                Article
                antioxidants-09-01227
                10.3390/antiox9121227
                7761826
                33287462
                f29e8c98-ecd8-47b9-8188-3f652a9c0284
                © 2020 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 05 October 2020
                : 27 November 2020
                Categories
                Review

                ascorbic acid,blood pressure,coronavirus,covid–19,dietary supplements,drug formulations,endothelial dysfunction,gulo,heart failure,hypertension,infections,liposomes,oxidative stress,stroke,svct,vascular permeability,vitamin c

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