dopamine and homovanillic acid concentrations were reduced in the caudate nucleus and putamen but not in the nucleus accumbens or frontal cortex , indicating that the nigrostriatal dopaminergic system is lesioned in patients with progressive supranuclear palsy ( as in those with parkinson 's disease ) but not the mesocortical and mesolimbic dopaminergic systems , which are lesioned in parkinsonian patients .
C0013030
dopamine
C0282151
dopaminergic