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Discovery of endogenous catecholamines in lymphocytes and evidence for catecholamine regulation of lymphocyte function via an autocrine loop.
Department of Clinical Neuroscience, Section for Neurochemistry.
of Clinical Immunology and Rheumatology, Goteborg University,.
Department of Clinical Neuroscience, Section for Neurochemistry.
Department of Chemistry, Pennsylvania State University, University Park,.
1994 (English)In: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 91, no 26, 12912-6 p.Article in journal (Refereed) Published
Abstract [en]

Evidence has been obtained that catecholamines and their metabolites are present in single lymphocytes and extracts of T- and B-cell clones by use of capillary electrophoresis with electrochemical detection. Pharmacological inhibition of tyrosine hydroxylase reduces observed catecholamine levels, suggesting catecholamine synthesis by lymphocytes. Intracellular dopamine levels are shown to be increased by extra-cellular dopamine, suggesting a cellular-uptake mechanism. Furthermore, incubation with either dopamine or L-dihydroxyphenylalanine, a precursor of dopamine, results in a dose-dependent inhibition of lymphocyte proliferation and differentiation. Together, these results suggest the presence of an autocrine loop whereby lymphocytes down-regulate their own activity.

Place, publisher, year, edition, pages
1994. Vol. 91, no 26, 12912-6 p.
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URN: urn:nbn:se:uu:diva-150343PubMedID: 7809145OAI: oai:DiVA.org:uu-150343DiVA: diva2:407020
Available from: 2011-03-29 Created: 2011-03-29 Last updated: 2017-12-11

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