antioxidants Review Insight into Polyphenol and Gut Microbiota Crosstalk: Are Their Metabolites the Key to Understand Protective Effects against Metabolic Disorders? Mireille Koudoufio 1,2,3, Yves Desjardins 3, Francis Feldman 1,2,3, Schohraya Spahis 1,2,3, Edgard Delvin 1,4 and Emile Levy 1,2,3,5,* 1 Research Centre, Sainte-Justine University Health Center, Montreal, QC H3T 1C5, Canada; mireille.koudoufi
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[email protected] (E.D.) 2 Department of Nutrition, Université de Montréal, Montreal, QC H3T 1J4, Canada 3 Institute of Nutrition and Functional Foods, Laval University, Quebec City, QC G1V 0A6, Canada;
[email protected] 4 Department of Biochemistry, Université de Montréal, Montreal, QC H3T 1J4, Canada 5 Department of Pediatrics, Université de Montréal, Montreal, QC H3T 1J4, Canada * Correspondence:
[email protected]; Tel.: +1-514-345-7783 Received: 16 September 2020; Accepted: 30 September 2020; Published: 13 October 2020 Abstract: Lifestyle factors, especially diet and nutrition, are currently regarded as essential avenues to decrease modern-day cardiometabolic disorders (CMD), including obesity, metabolic syndrome, type 2 diabetes, and atherosclerosis. Many groups around the world attribute these trends, at least partially, to bioactive plant polyphenols given their anti-oxidant and anti-inflammatory actions. In fact, polyphenols can prevent or reverse the progression of disease processes through many distinct mechanisms. In particular, the crosstalk between polyphenols and gut microbiota, recently unveiled thanks to DNA-based tools and next generation sequencing, unravelled the central regulatory role of dietary polyphenols and their intestinal micro-ecology metabolites on the host energy metabolism and related illnesses.