Use of high throughput amplicon sequencing and ethidium monoazide dye to track microbiota changes in an equol-producing menopausal woman receiving a long-term isoflavones treatment

AIMS Microbiology
Lucía GuadamuroSusana Delgado

Abstract

This work describes the impact of long term consumption of an isoflavone-rich dietary daily supplement on the composition and diversity of the faecal microbiota of a menopausal, equol-producing woman. Sequencing of 16S rDNA amplicons was performed on faecal samples taken at 0, 1, 3 and 6 months of treatment. Additionally, and for comparative purposes, ethidium monoazide (EMA) was used to avoid detection of DNA from dead bacteria. Members of two genera of the family Coriobacteriaceae (Eggerthella and Collinsella) were found in greater proportions at all sampling points during isoflavone supplementation. Different genera of the family Ruminococcaceae (e.g., Ruminococcus and Faecalibacterium), as well as members of the family Lachnospiraceae (Coprococcus) also underwent significant increases. For this last genus a positive correlation with the levels of equol excretion in urine was found. Currently bacterial strains known to be involved in isoflavone metabolism and equol production have been assigned to these taxa. The use of EMA dye allowed us to unravel those bacterial gut linages (e.g., Lachnospiraceae) that were more susceptible to damage. Our study contributes to the identification of microorganisms possibly involved in the p...Continue Reading

References

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Citations

Aug 8, 2021·International Journal of Environmental Research and Public Health·Lucía GuadamuroSusana Delgado
Aug 28, 2021·International Journal of Environmental Research and Public Health·Mercedes Y Lacourt-VenturaMichelle M Martínez-Montemayor

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Datasets Mentioned

BETA
SRP131870

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BETA
PCR

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Excel
RDP Library Compare
USEARCH
SigmaPlot
SPSS
Galaxy Web Server

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