TOURNISSAC, Marine; VANDAL, Milene; TREMBLAY, Cyntia; BOURASSA, Philippe; VANCASSEL, Sylvie; EMOND, Vincent; GANGLOFF, Anne; CALON, Frederic

doi:10.1016/j.trci.2018.10.005

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Alzheimer's & Dementia: Translational Research & Clinical Interventions. 2018, vol. 4, n° 1, p. 677-687

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Introduction High levels of plasmatic branched-chain amino acids (BCAA), commonly used as dietary supplements, are linked to metabolic risk factors for Alzheimer's disease (AD). BCAA directly influence amino acid transport to the brain and, therefore, neurotransmitter levels. We thus investigated the impact of BCAA on AD neuropathology in a mouse model. Methods 3xTg-AD mice were fed either a control diet or a high-fat diet from 6 to 18 months of age. For the last 2 months, dietary BCAA content was adjusted to high (+50%), normal (+0%), or low (−50%). Results Mice fed a BCAA-supplemented high-fat diet displayed higher tau neuropathology and only four out of 13 survived. Mice on the low-BCAA diet showed higher threonine and tryptophan cortical levels while performing better on the novel object recognition task. Discussion These preclinical data underscore a potential risk of combining high-fat and high BCAA consumption, and possible benefits from BCAA restriction in AD.< Leer menos

Palabras clave en inglés

3xTg-AD mice

Alzheimer's disease

Branched-chain amino acids

Dietary protein

Tau pathology

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https://oskar-bordeaux.fr/handle/20.500.12278/112270

DOI

http://dx.doi.org/10.1016/j.trci.2018.10.005

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NutriNeuro (Laboratoire de Nutrition et Neurobiologie Intégrée) - UMR 1286

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Dietary intake of branched-chain amino acids in a mouse model of Alzheimer's disease: Effects on survival, behavior, and neuropathology

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