Table 2.

Relationship between gut microbiota and central nervous system alterations in animal studies.

Research	Microorganisms	Intervention targets	Impact
Kim et al. (2022)	Bacteroides, Lactobacillus, Clostridium perfringens	AD rats	Associated with Aβ deposition
Bravo et al. (2011)	Lactobacillus	Mice	Increased GABA concentration, decreased corticosterone and depressive state in hippocampus
Wang S. et al. (2020)	Lactobacillus enterica, Lactobacillus royi	CSDS Mice	Affects plasma IL-6 and synaptophysin