Teresa Zelante, Giuseppe Paolicelli, Francesca Fallarino, Marco Gargaro, Gianluca Vascelli, Marco De Zuani, Jan Fric, Petra Laznickova, Marcela Hortova Kohoutkova, Antonio Macchiarulo, Daniela Dolciami, Giuseppe Pieraccini, Lorenzo Gaetani, Giulia Scalisi, Caterina Trevisan, Barbara Frossi, Carlo Pucillo, Antonella De Luca, Emilia Nunzi, Roberta Spaccapelo, Marilena Pariano, Monica Borghi, Francesca Boscaro, Riccardo Romoli, Andrea Mancini, Lucia Gentili, Giorgia Renga, Claudio Costantini, Matteo Puccetti, Stefano Giovagnoli, Maurizio Ricci, Martina Antonini, Paolo Calabresi, Paolo Puccetti, Massimiliano Di Filippo, Luigina Romani
Multiple sclerosis is a debilitating autoimmune disease, characterized by chronic inflammation of the central nervous system. While the significance of the gut microbiome on multiple sclerosis pathogenesis is established, the underlining mechanisms are unknown. We found that serum levels of the microbial postbiotic tryptophan metabolite indole-3-carboxaldehyde (3-IAld) inversely correlated with disease duration in multiple sclerosis patients. Much like the host-derived tryptophan derivative L-Kynurenine, 3-IAld would bind and activate the Aryl hydrocarbon Receptor (AhR), which, in turn, controls endogenous tryptophan catabolic pathways...
March 20, 2024: Scientific Reports