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Decreased dopamine transporters with age in health human subjects
N D Volkow1, J S Fowler, G J Wang
1Medical Department, Brookhaven National Laboratory, Upton, NY 11973.
Annals of Neurology
|August 1, 1994
Abstract:
The effects of aging on brain dopamine transporters was evaluated in 26 healthy male volunteers (age range, 21-63 years) using positron emission tomography and [11C]cocaine. The ratio of the distribution volume for [11C]cocaine in basal ganglia to that in cerebellum was used as a model parameter for dopamine transporter availability and showed a significant negative correlation with age (r = 0.65, p < 0.0005). This results document an age-related decline in dopamine transporters in healthy individuals.