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. 2023 Aug 27;24(17):13294. doi: 10.3390/ijms241713294

Figure 2.

Figure 2

Dysbiosis in neurodegenerative pathologies. Main intestinal microbiota composition in eubiosis (from higher to lower abundance) [147] and representation of the main changes observed in the dysbiosis of neurodegenerative pathologies. Arrows represent increase or decrease compared to healthy controls, according to the literature. Abbreviations: 5-HT: 5-hydroxytryptamine (serotonin); GABA: gamma-aminobutyric acid; IL: interleukin; LPS: lipopolysaccharides; NAM: nicotinamide; ROS: reactive oxygen species; TMAO: trimethylamine-N-oxide.