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Isoflavonas y equol: mito o realidad

Authors: Mayo Pérez, Baltasar; Flórez, Ana Belén; Vázquez, Lucía;

Isoflavonas y equol: mito o realidad

Abstract

Diversos estudios epidemiológicos sugieren que la ingesta de soja reduce el riesgo de padecer enfermedades y síndromes mediados por hormonas entre los que cabe destacar los síntomas de la menopausia, varias enfermedades cardiovasculares y neurodegenerativas y algunos tipos tipo de cáncer. Los efectos beneficiosos de la soja se atribuyen a su contenido en proteínas de gran valor biológico y a su alta concentración en isoflavonas. Las isoflavonas son polifenoles con actividad estrogénica debido a su similitud estructural con el 17ß-estradiol. En la planta, las isoflavonas se encuentran en forma de glucósidos conjugadas con azúcares; estos necesitan escindirse para que sean biodisponibles para el organismo. El proceso de desconjugación lo realizan enzimas tisulares y otros de la microbiota intestinal. Las agliconas se metabolizan posteriormente en el intestino dando lugar a compuestos con mayor actividad biológica (como el equol a partir de daidzeína) o inactivos como la o-dimetilangolensina (O-DMA). Mientras que un 90% de la población es capaz de producir O-DMA, tan solo un 25-35% de los individuos producen equol; estos podrían ser los únicos que se benefician del consumo de isoflavonas. En contraste con los datos epidemiológicos, los efectos beneficiosos de las isoflavonas en los estudios de intervención no son tan concluyentes. Entre otras casusas, las inconsistencias pueden deberse a variaciones interindividuales en la microbiota. Poco se conoce de las rutas y los microbios involucrados en el metabolismo de las isoflavonas y en la producción de equol. Este conocimiento resulta indispensable para maximizar la formación de los compuestos más saludables y extender sus efectos a la población general.

Trabajo presentado en el XI Congreso Internacional de Fitoterapia Ciudad de Oviedo: Panorama actual de la Fitoterapia, celebrado en Oviedo (Asturias, España) del 13 al 15 de abril de 2018

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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!
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