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Where do health benefits of flavonoids come from? Insights from flavonoid targets and their evolutionary history

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出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.bbrc.2013.04.035

关键词

Flavonoids; Targets; Chronic diseases; Evolution; Gut microbiota

资金

  1. National Basic Research Program of China (973 project) [2010CB126100, 2012CB721000]
  2. National Natural Science Foundation of China [21173092]
  3. Fundamental Research Funds for the Central Universities [2011PY142, 2011PY027]

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Flavonoid intake is negatively correlated with the incidence of some chronic diseases including cardiovascular diseases, type II diabetes, neurodegenerative diseases, and cancers. Thus, the molecular mechanisms underlying this correlation are of great interest. Although ample attention has been given to the free radical-scavenging potential of flavonoids, the poor bioavailability of exogenous flavonoids suggests that the direct antioxidant activity is unlikely responsible for their favorable effects. This study comprehensively analyzed flavonoid targets. The results show that the main functions of these targets are associated with cancers and cardiovascular and metabolic diseases. Moreover, evolutionary analysis of these targets showed that similar to 1000 of the targets have homologues in human gut bacterial metagenomes. Clusters of orthologous groups of proteins (COG) analysis indicated that most of these bacterial targets are associated with bacterial metabolism. Given that the metabolism of gut microbiota is coupled with the metabolism of the host, this finding implies that flavonoids exert their benefits by regulating gut microbes. Therefore, the health benefits of flavonoids are well explained by their targets rather than their direct antioxidant potential. (c) 2013 Elsevier Inc. All rights reserved.

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