RT Journal Article SR Electronic T1 Obesity-associated deficits in inhibitory control are phenocopied to mice through gut microbiota changes in one-carbon and aromatic amino acids metabolic pathways JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 2283 OP 2296 DO 10.1136/gutjnl-2020-323371 VO 70 IS 12 A1 María Arnoriaga-Rodríguez A1 Jordi Mayneris-Perxachs A1 Oren Contreras-Rodríguez A1 Aurelijus Burokas A1 Juan-Antonio Ortega-Sanchez A1 Gerard Blasco A1 Claudia Coll A1 Carles Biarnés A1 Anna Castells-Nobau A1 Josep Puig A1 Josep Garre-Olmo A1 Rafel Ramos A1 Salvador Pedraza A1 Ramon Brugada A1 Joan C Vilanova A1 Joaquín Serena A1 Jordi Barretina A1 Jordi Gich A1 Vicente Pérez-Brocal A1 Andrés Moya A1 Xavier Fernández-Real A1 Lluis Ramio-Torrentà A1 Reinald Pamplona A1 Joaquim Sol A1 Mariona Jové A1 Wifredo Ricart A1 Manuel Portero-Otin A1 Rafael Maldonado A1 Jose Manuel Fernández-Real YR 2021 UL http://gut.bmj.com/content/70/12/2283.abstract AB Background Inhibitory control (IC) is critical to keep long-term goals in everyday life. Bidirectional relationships between IC deficits and obesity are behind unhealthy eating and physical exercise habits.Methods We studied gut microbiome composition and functionality, and plasma and faecal metabolomics in association with cognitive tests evaluating inhibitory control (Stroop test) and brain structure in a discovery (n=156), both cross-sectionally and longitudinally, and in an independent replication cohort (n=970). Faecal microbiota transplantation (FMT) in mice evaluated the impact on reversal learning and medial prefrontal cortex (mPFC) transcriptomics.Results An interplay among IC, brain structure (in humans) and mPFC transcriptomics (in mice), plasma/faecal metabolomics and the gut metagenome was found. Obesity-dependent alterations in one-carbon metabolism, tryptophan and histidine pathways were associated with IC in the two independent cohorts. Bacterial functions linked to one-carbon metabolism (thyX,dut, exodeoxyribonuclease V), and the anterior cingulate cortex volume were associated with IC, cross-sectionally and longitudinally. FMT from individuals with obesity led to alterations in mice reversal learning. In an independent FMT experiment, human donor’s bacterial functions related to IC deficits were associated with mPFC expression of one-carbon metabolism-related genes of recipient’s mice.Conclusion These results highlight the importance of targeting obesity-related impulsive behaviour through the induction of gut microbiota shifts.All data relevant to the study are included in the article or uploaded as supplementary information.