Piribedil and its metabolite (pyrimidyl-2′)-1-(dihydroxy-3′,4′-benzyl)-4-piperazine dichlorhydrate (PdHBP), like apomorphine, decrease the level of HVa in the rat striatum. The effect appears rapidly and it lasts for about 2 hr. Piribedil antagonizes the rise of striatal HVA elicited by chlorpromazine, haloperidol and fenfluramine. Piribedil, PdHBP and apomorphine did not counteract the increase of striatal HVA induced by d-amphetamine.
- Dopamine metabolism
- Homovanillic acid (HVA)
- Neuroleptic drugs
ASJC Scopus subject areas
- Cellular and Molecular Neuroscience