Journal
NEUROCHEMICAL RESEARCH
Volume 33, Issue 6, Pages 1011-1016Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11064-007-9541-4
Keywords
dopamine; dopamine transporter; human lymphocytes; H-3-WIN-35,428 binding; H-3-DA reuptake; pharmacological characterization
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The paucity of information on the presence of the dopamine transporter (DAT) in blood cells, prompted us to explore it in human resting lymphocytes by means of the binding of H-3-WIN 35,428, a compound which is currently considered the most selective ligand for labelling this protein, and by means of the specific reuptake of H-3-dopamine (H-3-DA). Lymphocytes were obtained by 15 healthy subjects. The results showed the presence of a specific and saturable binding of H-3-WIN 35,428, which labelled one site only. A specific H-3-DA reuptake was also measured. The pharmacological characterization of both binding and reuptake was overlapping. These findings would indicate that human resting lymphocytes carry the DAT, whose functions in periphery are still unknown.
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