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Isoflavonas de soja y poblaciones microbianas intestinales: identificación y caracterización de microorganismos involucrados en su metabolismo

Authors: Guadamuro, Lucía;

Isoflavonas de soja y poblaciones microbianas intestinales: identificación y caracterización de microorganismos involucrados en su metabolismo

Abstract

Los efectos beneficiosos de la soja en la salud se atribuyen a su alto contenido en proteínas de gran valor biológico y a su contenido en isoflavonas. Las isoflavonas son polifenoles con similitud química con el 17-β-estradiol que poseen actividad estrogénica. En las plantas las isoflavonas se encuentran conjugadas con azúcares en forma de glucósidos. La desglicosilación de los glucósidos de la soja libera las correspondientes agliconas, con mayor biodisponibilidad y actividad que los glucósidos. Las agliconas se metabolizan en el intestino dando lugar a compuestos con mayor actividad biológica (como el equol a partir de la daidzeína) o inactivos (como el O-DMA). Poco se conoce de las rutas y los microorganismos involucrados en este metabolismo. Al igual que otros polifenoles, las isoflavonas (o sus metabolitos) muestran cierta actividad antimicrobiana. Algunos metabolitos podrían también promover el desarrollo de determinados biotipos. La modulación de las poblaciones intestinales podría ser uno de los mecanismos de los efectos beneficiosos de las isoflavonas en la salud. En este contexto, la Tesis Doctoral que aquí se presenta ha perseguido dos objetivos principales: (i) estudiar el efecto de la ingesta de isoflavonas sobre las poblaciones microbianas intestinales y su metabolismo y (ii) identificar y seleccionar microorganismos que activen las isoflavonas y que puedan emplearse como cultivos iniciadores funcionales. Ante la falta de metodología, fue necesario también mejorar o desarrollar métodos de extracción, detección y cuantificación de las isoflavonas y sus metabolitos a partir de muestras biológicas humanas.

The study was supported by projects from the Spanish Ministry of Economy and Competitiveness to B.M. (ref. AGL2011-24300-ALI and AGL-2014-57820-R) and to M.V.M.-A. (ref.AGL2012-40172-C02-01). L.G. was supported by a research contract of FPI Program from MINECO (ref. BES-2012-062502), and A.B.F. and A.M.J.-G. were supported by research contracts of JAE-Doc Program from CSIC.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green