TABLE 4. Studies investigating the effects of indole metabolites on depressive-like behavior.

AhR: Aryl Hydrocarbon Receptor; Ccl2: C-C Motif Chemokine Ligand 2; EAE: Experimental Autoimmune Encephalomyelitis; EPM: Elevat-ed Plus Maze; FST: Forced Swim Test; GF: Germ Free; GFAP: Glial Fibrillary Acidic Protein; I3S: Indoxyl-3-sulfate; IAld: Indole-3-aldehyde; IPA: Indole-3-propionic acid; Nos2: Nitric Oxide Synthase 2; OFT: Open Field Test; SIT: Social Interaction Test; SPF: Specific Pathogen Free; WT: Wild Type.

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