%0 Journal Article %A Zhao, Yujia %A Lai, Yunjia %A Darweesh, Sirwan K L %A Bloem, Bastiaan R %A Forsgren, Lars %A Hansen, Johnni %A Katzke, Verena A %A Masala, Giovanna %A Sieri, Sabina %A Sacerdote, Carlotta %A Panico, Salvatore %A Zamora-Ros, Raul %A Sanchez-Perez, Maria-Jose %A Huerta, José María %A Guevara, Marcela %A Vinagre-Aragon, Ana %A Vineis, Paolo %A Lill, Christina M %A Miller, Gary W %A Peters, Susan %A Vermeulen, Roel %T Gut Microbial Metabolites and Future Risk of Parkinson's Disease: A Metabolome-Wide Association Study. %D 2024 %U https://hdl.handle.net/10668/24332 %X BackgroundAlterations in gut microbiota are observed in Parkinson's disease (PD). Previous studies on microbiota-derived metabolites in PD were small-scale and post-diagnosis, raising concerns about reverse causality.ObjectivesOur goal was to prospectively investigate the association between plasma microbial metabolites and PD risk within a metabolomics framework.MethodsA nested case–control study within the prospective EPIC4PD cohort, measured pre-diagnostic plasma microbial metabolites using untargeted metabolomics.ResultsThirteen microbial metabolites were identified nominally associated with PD risk (P-value < 0.05), including amino acids, bile acid, indoles, and hydroxy acid, although none remained significant after multiple testing correction. Three pathways were implicated in PD risk: valine, leucine, and isoleucine degradation, butanoate metabolism, and propanoate metabolism. PD-associated microbial pathways were more pronounced in men, smokers, and overweight/obese individuals.ConclusionChanges in microbial metabolites may represent a pre-diagnostic feature of PD. We observed biologically plausible associations between microbial pathways and PD, potentially influenced by individual characteristics. © 2024 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society. %K Gut‐brain axis %K Microbial metabolites %K Parkinson's disease %K Pre‐diagnostic biosamples %K Untargeted metabolomics %~