Functional microbiome deficits associated with ageing: Chronological age threshold
Por:
Ruiz-Ruiz S, Sanchez-Carrillo S, Ciordia S, Mena MC, Méndez-García C, Rojo D, Bargiela R, Zubeldia-Varela E, Martínez-Martínez M, Barbas C, Ferrer M and Moya A
Publicada:
1 ene 2020
Ahead of Print:
1 nov 2019
Resumen:
Composition of the gut microbiota changes during ageing, but questions remain about whether age is also associated with deficits in microbiome function and whether these changes occur sharply or progressively. The ability to define these deficits in populations of different ages may help determine a chronological age threshold at which deficits occur and subsequently identify innovative dietary strategies for active and healthy ageing. Here, active gut microbiota and associated metabolic functions were evaluated using shotgun proteomics in three well-defined age groups consisting of 30 healthy volunteers, namely, ten infants, ten adults and ten elderly individuals. Samples from each volunteer at intervals of up to 6 months (n = 83 samples) were used for validation. Ageing gradually increases the diversity of gut bacteria that actively synthesize proteins, that is by 1.4-fold from infants to elderly individuals. An analysis of functional deficits consistently identifies a relationship between tryptophan and indole metabolism and ageing (p < 2.8e(-8)). Indeed, the synthesis of proteins involved in tryptophan and indole production and the faecal concentrations of these metabolites are directly correlated (r(2) > .987) and progressively decrease with age (r(2) > .948). An age threshold for a 50% decrease is observed ca. 11-31 years old, and a greater than 90% reduction is observed from the ages of 34-54 years. Based on recent investigations linking tryptophan with abundance of indole and other "healthy" longevity molecules and on the results from this small cohort study, dietary interventions aimed at manipulating tryptophan deficits since a relatively "young" age of 34 and, particularly, in the elderly are recommended.
Filiaciones:
:
Unidad Mixta de Investigación en Genómica y Salud, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO) and Instituto de Biología Integrativa de Sistemas, Universitat de València and Consejo Superior de Investigaciones Científicas (CSIC), València, Spain
CIBER en Epidemiología y Salud Pública (CIBEResp), Madrid, Spain
Sanchez-Carrillo S:
Instituto de Catálisis, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
Ciordia S:
Unidad de Proteómica, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
Mena MC:
Unidad de Proteómica, Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
Méndez-García C:
Instituto de Catálisis, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
Rojo D:
Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
Bargiela R:
Instituto de Catálisis, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
Zubeldia-Varela E:
Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
Departamento de Ciencias Médicas Básicas, Facultad de Medicina, Universidad CEU San Pablo, Madrid, Spain
Martínez-Martínez M:
Instituto de Catálisis, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
Barbas C:
Centro de Metabolómica y Bioanálisis (CEMBIO), Facultad de Farmacia, Universidad CEU San Pablo, Campus Montepríncipe, Madrid, Spain
Ferrer M:
Instituto de Catálisis, Consejo Superior de Investigaciones Científicas (CSIC), Madrid, Spain
:
Unidad Mixta de Investigación en Genómica y Salud, Fundación para el Fomento de la Investigación Sanitaria y Biomédica de la Comunitat Valenciana (FISABIO) and Instituto de Biología Integrativa de Sistemas, Universitat de València and Consejo Superior de Investigaciones Científicas (CSIC), València, Spain
CIBER en Epidemiología y Salud Pública (CIBEResp), Madrid, Spain
Green Published, gold
|