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- Title
Urolithin Metabotypes Can Determine the Modulation of Gut Microbiota in Healthy Individuals by Tracking Walnuts Consumption over Three Days.
- Authors
García-Mantrana, Izaskun; Calatayud, Marta; Romo-Vaquero, María; Espín, Juan Carlos; Selma, María V.; Collado, María Carmen
- Abstract
Walnuts are rich in polyphenols ellagitannins, modulate gut microbiota (GM), and exert health benefits after long-term consumption. The metabolism of ellagitannins to urolithins via GM depends on urolithin metabotypes (UM-A, -B, or -0), which have been reported to predict host responsiveness to a polyphenol-rich intervention. This study aims to assess whether UMs were associated with differential GM modulation after short-term walnut consumption. In this study, 27 healthy individuals consumed 33 g of peeled raw walnuts over three days. GM profiling was determined using 16S rRNA illumina sequencing and specific real-time quantitative polymerase chain reactions (qPCRs), as well as microbial activity using short-chain fatty acids analysis in stool samples. UMs stratification of volunteers was assessed using ultra performance liquid chromatography–electro spray ionization–quadrupole time of flight–mass spectrometry (UPLC-ESI-QTOF-MS) analysis of urolithins in urine samples. The gut microbiota associated with UM-B was more sensitive to the walnut intervention. Blautia, Bifidobacterium, and members of the Coriobacteriaceae family, including Gordonibacter, increased exclusively in UM-B subjects, while some members of the Lachnospiraceae family decreased in UM-A individuals. Coprococcus and Collinsella increased in both UMs and higher acetate and propionate production resulted after walnuts intake. Our results show that walnuts consumption after only three days modulates GM in a urolithin metabotype-depending manner and increases the production of short-chain fatty acids (SCFA).
- Subjects
RNA metabolism; FECAL analysis; LIQUID chromatography; MASS spectrometry; NUTRITION; POLYMERASE chain reaction; POLYPHENOLS; TANNINS; URINALYSIS; WALNUT; GUT microbiome; QUANTITATIVE research; SHORT-chain fatty acids; SEQUENCE analysis
- Publication
Nutrients, 2019, Vol 11, Issue 10, p2483
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu11102483