5-HT	5-hydroxytryptamine
BCFA	Branched-chain fatty acid
BDNF	Brain-derived neurotrophic factor
CNS	Central nervous system
CRS	Chronic restraint stress
CSDS	Chronic social defeat stress
CUMS	Chronic unpredictable mild stress
ENS	Enteric nervous system
FMT	Fecal microbiota transplantation
FOS	Fructooligosaccharides
GABA	Gamma-aminobutyric acid
GALT	Gut-associated lymphoid tissue
GI	Gastrointestinal
GLP	Glucagon-like peptide
GOS	Galactooligosaccharide
HPA	Hypothalamic–pituitary–adrenal
IBD	Inflammatory bowel disease
IDO	Indoleamine-2,3-dioxygenase
IL	Interleukin
LPS	Lipopolysaccharide
MDD	Major depressive disorder
MUFA	Monounsaturated fatty acid
MS	Maternal separation
PUFA	Polyunsaturated fatty acid
RCT	Randomized controlled trial
ROS	Reactive oxygen species
SCFA	Short-chain fatty acid
SPM	Specialized pro-resolving mediators
TNF-α	Tumor necrosis factor-alpha