Journal
NUTRIENTS
Volume 15, Issue 10, Pages -Publisher
MDPI
DOI: 10.3390/nu15102352
Keywords
isoflavone; daidzein; genistein; human; metabolism; metabotypes
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This study investigated the microbial metabolite profile of soy isoflavones and classified the population into 5 isoflavone metabotypes based on their metabolite profiles. These metabotypes differed significantly in their metabolite composition and estrogenic potency.
Background: Soy isoflavones belong to the group of phytoestrogens and are associated with beneficial health effects but are also discussed to have adverse effects. Isoflavones are intensively metabolized by the gut microbiota leading to metabolites with altered estrogenic potency. The population is classified into different isoflavone metabotypes based on individual metabolite profiles. So far, this classification was based on the capacity to metabolize daidzein and did not reflect genistein metabolism. We investigated the microbial metabolite profile of isoflavones considering daidzein and genistein. Methods: Isoflavones and metabolites were quantified in the urine of postmenopausal women receiving a soy isoflavone extract for 12 weeks. Based on these data, women were clustered in different isoflavone metabotypes. Further, the estrogenic potency of these metabotypes was estimated. Results: Based on the excreted urinary amounts of isoflavones and metabolites, the metabolite profiles could be calculated, resulting in 5 metabotypes applying a hierarchical cluster analysis. The metabotypes differed in part strongly regarding their metabolite profile and their estimated estrogenic potency.
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