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Link to original content: https://pubmed.ncbi.nlm.nih.gov/9307051
Cocaine abusers do not show loss of dopamine transporters with age - PubMed Skip to main page content
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. 1997;61(11):1059-65.
doi: 10.1016/s0024-3205(97)00614-0.

Cocaine abusers do not show loss of dopamine transporters with age

G J Wang  1 , N D Volkow, J S Fowler, M Fischman, R Foltin, N N Abumrad, J Logan, N R Pappas
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Free article

Cocaine abusers do not show loss of dopamine transporters with age

G J Wang et al. Life Sci. 1997.
Free article

Abstract

Cocaine blocks dopamine transporters (DAT) and this effect is crucial to its reinforcing properties. To assess the effects of chronic cocaine on DAT we evaluated 20 current cocaine abusers and 20 age matched controls using PET and [C-11]cocaine as a DAT ligand. Though there were no differences in DAT availability between groups, current cocaine abusers (and 12 detoxified cocaine abusers studied previously) did not show the typical age-related decline in DAT seen in controls. Though further studies are required to rule out sampling effects and to control for confounding variables (i.e. smoking), one could speculate that chronic DAT blockade by cocaine has a protective effect on the loss of DAT with age.

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