PD	Parkinson’s disease
DA	Dopamine
LD	LevoDopa
BBB	Blood brain barrier
CNS	Central nervous system
AUC	Area under the curve
6-OHDA	6-hydroxydopamine
i.p.	Intraperitoneal
COMT	Catechol-O-methyltransferase
DDC	Dopa-decarboxylase
MAO	Mono amino oxidase
GSH	Glutathione
DA-PHEN	2-Amino-N-[2-(3,4-dihydroxy-phenyl)-ethyl]-3-phenyl-propionamide
PAMPA	parallel artificial permeability assay
GLUT1	glucose transporter
MCT	monocarboxylic acid transporter
PDDP	dopamine-3-(dimethylamino) propanamide
LAT1	large neutral amino acid transporter