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      The Gut Microbiota and Its Implication in the Development of Atherosclerosis and Related Cardiovascular Diseases

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          Abstract

          The importance of gut microbiota in health and disease is being highlighted by numerous research groups worldwide. Atherosclerosis, the leading cause of heart disease and stroke, is responsible for about 50% of all cardiovascular deaths. Recently, gut dysbiosis has been identified as a remarkable factor to be considered in the pathogenesis of cardiovascular diseases (CVDs). In this review, we briefly discuss how external factors such as dietary and physical activity habits influence host-microbiota and atherogenesis, the potential mechanisms of the influence of gut microbiota in host blood pressure and the alterations in the prevalence of those bacterial genera affecting vascular tone and the development of hypertension. We will also be examining the microbiota as a therapeutic target in the prevention of CVDs and the beneficial mechanisms of probiotic administration related to cardiovascular risks. All these new insights might lead to novel analysis and CVD therapeutics based on the microbiota.

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          Most cited references156

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          Formation of propionate and butyrate by the human colonic microbiota

          The human gut microbiota ferments dietary non-digestible carbohydrates into short-chain fatty acids (SCFA). These microbial products are utilized by the host and propionate and butyrate in particular exert a range of health-promoting functions. Here an overview of the metabolic pathways utilized by gut microbes to produce these two SCFA from dietary carbohydrates and from amino acids resulting from protein breakdown is provided. This overview emphasizes the important role played by cross-feeding of intermediary metabolites (in particular lactate, succinate and 1,2-propanediol) between different gut bacteria. The ecophysiology, including growth requirements and responses to environmental factors, of major propionate and butyrate producing bacteria are discussed in relation to dietary modulation of these metabolites. A detailed understanding of SCFA metabolism by the gut microbiota is necessary to underpin effective strategies to optimize SCFA supply to the host.
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            Dietary Fiber-Induced Improvement in Glucose Metabolism Is Associated with Increased Abundance of Prevotella.

            The gut microbiota plays an important role in human health by interacting with host diet, but there is substantial inter-individual variation in the response to diet. Here we compared the gut microbiota composition of healthy subjects who exhibited improved glucose metabolism following 3-day consumption of barley kernel-based bread (BKB) with those who responded least to this dietary intervention. The Prevotella/Bacteroides ratio was higher in responders than non-responders after BKB. Metagenomic analysis showed that the gut microbiota of responders was enriched in Prevotella copri and had increased potential to ferment complex polysaccharides after BKB. Finally, germ-free mice transplanted with microbiota from responder human donors exhibited improved glucose metabolism and increased abundance of Prevotella and liver glycogen content compared with germ-free mice that received non-responder microbiota. Our findings indicate that Prevotella plays a role in the BKB-induced improvement in glucose metabolism observed in certain individuals, potentially by promoting increased glycogen storage.
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              Microbiota-mediated colonization resistance against intestinal pathogens.

              Commensal bacteria inhabit mucosal and epidermal surfaces in mice and humans, and have effects on metabolic and immune pathways in their hosts. Recent studies indicate that the commensal microbiota can be manipulated to prevent and even to cure infections that are caused by pathogenic bacteria, particularly pathogens that are broadly resistant to antibiotics, such as vancomycin-resistant Enterococcus faecium, Gram-negative Enterobacteriaceae and Clostridium difficile. In this Review, we discuss how immune- mediated colonization resistance against antibiotic-resistant intestinal pathogens is influenced by the composition of the commensal microbiota. We also review recent advances characterizing the ability of different commensal bacterial families, genera and species to restore colonization resistance to intestinal pathogens in antibiotic-treated hosts.
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                Author and article information

                Journal
                Nutrients
                Nutrients
                nutrients
                Nutrients
                MDPI
                2072-6643
                26 February 2020
                March 2020
                : 12
                : 3
                : 605
                Affiliations
                [1 ]Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, 18071 Granada, Spain
                [2 ]Institute of Nutrition and Food Technology “José Mataix”, Center of Biomedical Research, University of Granada, Avda. del Conocimiento s/n., 18016 Armilla, Granada, Spain; alejandroegezor@ 123456gmail.com
                [3 ]Instituto de Investigación Biosanitaria IBS.GRANADA, Complejo Hospitalario Universitario de Granada, 18014 Granada, Spain
                [4 ]Department of Nutrition, Exercise and Sports (NEXS), Section of Integrative Physiology, University of Copenhagen, Nørre Allé 51, DK-2200 Copenhagen, Denmark; jeroav@ 123456ugr.es
                [5 ]Departamento de Farmacia, Facultad de Química, Pontificia Universidad Católica de Chile, Santiago 6094411, Chile; chechomu@ 123456hotmail.com
                [6 ]National Agency for Medicines (ANAMED), Public Health Institute, Santiago 7780050, Chile
                [7 ]Cardiology Unit, Hospital Universitario Virgen de la Nieves, 18014 Granada, Spain
                [8 ]Department of Cell Biology, School of Sciences, University of Granada, 18071 Granada, Spain
                Author notes
                [* ]Correspondence: estefaniasr@ 123456outlook.com (E.S.-R.); jrplaza@ 123456ugr.es (J.P.-D.); fmolina@ 123456ugr.es (F.A.-M.); Tel.: +34-9-5824-1000 (ext. 41599) (J.P.-D.)
                Author information
                https://orcid.org/0000-0001-8164-6513
                https://orcid.org/0000-0002-5522-8227
                https://orcid.org/0000-0002-5171-9408
                https://orcid.org/0000-0002-2550-6695
                Article
                nutrients-12-00605
                10.3390/nu12030605
                7146472
                32110880
                e3dda7cb-d0ae-4ac7-8a8a-271039d7c3d1
                © 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
                : 25 January 2020
                : 21 February 2020
                Categories
                Review

                Nutrition & Dietetics
                cardiovascular diseases,atherosclerosis,gut microbiota,microbiome
                Nutrition & Dietetics
                cardiovascular diseases, atherosclerosis, gut microbiota, microbiome

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