AD	Alzheimer’s disease
CNS	Central nervous system
ENS	Enteric nervous system
Veh	Vehicle
WT	Wild type
ABX	Antibiotics
Syn	Synbiotic (Antibiotics plus probiotics)
CFU	colony forming units
Iba1	Ionized calcium binding adaptor molecule 1
GFAP	Glial fibrillary acidic protein
Aβ	Amyloid beta
PBS	Phosphate buffered saline
ELISA	Enzyme-linked immunosorbent assay
BCA	Bicinchoninic acid
SEM	standard error of the mean
ANOVA	analysis of variance
VSL#3	commercially available probiotic containing eight type of bacteria
APP	amyloid precursor protein
LPS	Lipopolysaccharide