Dizocilpine enhances striatal tyrosine hydroxylase and aromatic L-amino acid decarboxylase activity.
Dizocilpine administration enhances dopamine metabolism in the rat striatum, nucleus accumbens, olfactory tubercle, and prefrontal cortex. Concomitant with increased metabolism is enhanced tyrosine hydroxylase and aromatic L-amino acid decarboxylase activities in the striatum and increased mRNA for the two enzymes in the midbrain. Activation of dopaminergic neurons may, in part, explain increased locomotor activity in normal animals and the ability of dizocilpine to potentiate the antiparkinsonian action of L-3,4-dihydroxyphenylalanine in an animal model.
Hadjiconstantinou
M
M
Department of Psychiatry, Ohio State University College of Medicine, Columbus 43210, USA.
Rossetti
Z L
ZL
Wemlinger
T A
TA
Neff
N H
NH
D000704:Analysis of Variance; D000818:Animals; D001142:Aromatic-L-Amino-Acid Decarboxylases / Q000187:drug effects* / Q000378:metabolism; D015152:Blotting, Northern; D001921:Brain / Q000201:enzymology; D003342:Corpus Striatum / Q000201:enzymology*; D016291:Dizocilpine Maleate / Q000494:pharmacology*; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D014446:Tyrosine 3-Monooxygenase / Q000187:drug effects* / Q000378:metabolism
D016291:Dizocilpine Maleate; D014446:Tyrosine 3-Monooxygenase; D001142:Aromatic-L-Amino-Acid Decarboxylases