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      Molecular Properties of Red Wine Compounds and Cardiometabolic Benefits

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          Abstract

          Wine has been used since the dawn of human civilization. Despite many health benefits, there is still a lot of discussion about the real properties of its components and its actions on cells and molecular interactions. A large part of these issues permeate the fine line between the amount of alcohol that causes problems to organic systems and the amount that could be beneficial for the health. However, even after the process of fermentation, wine conserves different organic compounds from grapes, such as polysaccharides, acids, and phenolic compounds, such as flavonoids and nonflavonoids. These substances have known anti-inflammatory and antioxidant capacities, and are considered as regulatory agents in cardiometabolic process. In this study, the main chemical components present in the wine, its interaction with molecules and biological mechanisms, and their interference with intra- and extracellular signaling are reviewed. Finally, the properties of wine that may benefit cardiovascular system are also revised.

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          Most cited references66

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          Bioavailability of the Polyphenols: Status and Controversies

          The current interest in polyphenols has been driven primarily by epidemiological studies. However, to establish conclusive evidence for the effectiveness of dietary polyphenols in disease prevention, it is useful to better define the bioavailability of the polyphenols, so that their biological activity can be evaluated. The bioavailability appears to differ greatly among the various phenolic compounds, and the most abundant ones in our diet are not necessarily those that have the best bioavailability profile. In the present review, we focus on the factors influencing the bioavailability of the polyphenols. Moreover, a critical overview on the difficulties and the controversies of the studies on the bioavailability is discussed.
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            Flavan-3-ols: nature, occurrence and biological activity.

            Representing the most common flavonoid consumed in the American diet, the flavan-3-ols and their polymeric condensation products, the proanthocyanidins, are regarded as functional ingredients in various beverages, whole and processed foods, herbal remedies and supplements. Their presence in food affects food quality parameters such as astringency, bitterness, sourness, sweetness, salivary viscosity, aroma, and color formation. The ability of flavan-3-ols to aid food functionality has also been established in terms of microbial stability, foamability, oxidative stability, and heat stability. While some foods only contain monomeric flavan-3-ols [(-)-epicatechin predominates] and dimeric proanthocyanidins, most foods contain oligomers of degree of polymerization values ranging from 1-10 or greater than 10. Flavan-3-ols have been reported to exhibit several health beneficial effects by acting as antioxidant, anticarcinogen, cardiopreventive, antimicrobial, anti-viral, and neuro-protective agents. This review summarizes the distribution and health effects of these compounds.
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              Is Open Access

              Alcohol, Oxidative Stress, and Free Radical Damage

              Reactive oxygen species (ROS) are small, highly reactive, oxygen-containing molecules that are naturally generated in small amounts during the body’s metabolic reactions and can react with and damage complex cellular molecules such as fats, proteins, or DNA. Alcohol promotes the generation of ROS and/or interferes with the body’s normal defense mechanisms against these compounds through numerous processes, particularly in the liver. For example, alcohol breakdown in the liver results in the formation of molecules whose further metabolism in the cell leads to ROS production. Alcohol also stimulates the activity of enzymes called cytochrome P450s, which contribute to ROS production. Further, alcohol can alter the levels of certain metals in the body, thereby facilitating ROS production. Finally, alcohol reduces the levels of agents that can eliminate ROS (i.e., antioxidants). The resulting state of the cell, known as oxidative stress, can lead to cell injury. ROS production and oxidative stress in liver cells play a central role in the development of alcoholic liver disease.
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                Author and article information

                Journal
                Nutr Metab Insights
                Nutr Metab Insights
                Nutrition and Metabolic Insights
                Nutrition and Metabolic Insights
                Libertas Academica
                1178-6388
                2016
                02 August 2016
                : 9
                : 51-57
                Affiliations
                [1 ]Cellular and Molecular Cardiology Laboratory, Institute of Cardiology of Rio Grande do Sul (IC/FUC), Porto Alegre, Rio Grande do Sul, Brazil.
                [2 ]Postgraduate Program in Health Sciences: Cardiology, Institute of Cardiology of Rio Grande do Sul (IC/FUC), Porto Alegre, Rio Grande do Sul, Brazil.
                [3 ]Department of Nutrition, Federal University of Health Sciences of Porto Alegre (UFCSPA), Porto Alegre, Rio Grande do Sul, Brazil.
                [4 ]Institute of Technology in Food for Health, University of Vale do Rio dos Sinos (UNISINOS), São Leopoldo, Rio Grande do Sul, Brazil.
                Author notes
                Article
                nmi-9-2016-051
                10.4137/NMI.S32909
                4973766
                27512338
                86668119-4f3d-49d3-8530-0363849c45d6
                © 2016 the author(s), publisher and licensee Libertas Academica Ltd.

                This is an open-access article distributed under the terms of the Creative Commons CC-BY-NC 3.0 License.

                History
                : 03 March 2016
                : 14 June 2016
                : 16 June 2016
                Categories
                Review

                wine,ethanol,flavonoids,cardiovascular system
                wine, ethanol, flavonoids, cardiovascular system

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