At. Portman et al., The nigrostriatal dopaminergic system in familial early onset parkinsonismwith parkin mutations, NEUROLOGY, 56(12), 2001, pp. 1759-1762
Nigrostriatal dopaminergic function and cerebral energy metabolism were mea
sured with PET in two brothers with early-onset parkinsonism caused by muta
tion of the parkin gene. Energy metabolism did not differ, but the nigrostr
iatal dopaminergic pattern was clearly different than that of sporadic PD.
Thus parkinsonism in these two patients was shown to be pathophysiologicall
y different than PD.