CKD	Chronic Kidney Disease
CI	Cognitive impairment
eGFR	Estimated glomerular filtration rate
BBB	Blood–Brain barrier
TMAO	Trimethylamine-N-oxide
NMDA	N-methyl-D-aspartate
ESRD	End-stage renal disease
MMSE	Mini-Mental State Examination
MoCA	Montreal Cognitive Assessment
NfL	Neurofilament light chain
NSE	Neuron-specific enolase
GFAP	Glial fibrillary acidic protein
BDNF	Brain-derived neurotrophic factor
JAM-1	Junctional adhesion molecule-1
IAA	Indole-3-acetic acid
CASI	Cognitive Abilities Screening Instrument
MCI	Mild cognitive impairment
MRI	Magnetic resonance imaging