Baseline plasma epinephrine levels predict Wisconsin Card Sorting Test scores in healthy volunteers.

The present study was undertaken to further explore the potential neuropsychological information associated with baseline plasma levels of catecholamines and dopamine D3 receptor (DRD3) mRNA expression in peripheral blood lymphocytes (PBL). Baseline plasma norepinephrine and epinephrine levels and PBL DRD3 mRNA expression were compared with performance in the Wisconsin Card Sorting Test (WCST) in n=79 healthy volunteers (mean+/-S.D.

[35S]GTPgammaS binding at the human dopamine D4 receptor variants hD4.2, hD4.4 and hD4.7 following stimulation by dopamine, epinephrine and norepinephrine.

Aim of the present study was to investigate possible differences between the human dopamine D4 receptor 48 bp polymorphism variants hD4.2, hD.4.