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Transporters involved in adult rat cortical astrocyte dopamine uptake [Elektronski vir] : kinetics, expression and pharmacological modulationSočan, Vesna ; Dolinar, Klemen ; Kržan, Mojca, 1962-Astrocytes, glial cells in the central nervous system, perform a multitude of homeostatic functions and are in constant bidirectional communication with neuronal cells, a concept named the tripartite ... synapse; however, their role in the dopamine homeostasis remains unexplored. The aim of this study was to clarify the pharmacological and molecular characteristics of dopamine transport in cultured cortical astrocytes of adult rats. In addition, we were interested in the expression of mRNA of dopamine transporters as well as dopamine receptors D1 and D2 and in the effect of dopaminergic drugs on the expression of these transporters and receptors. We have found that astrocytes possess both Na+-dependent and Na+-independent transporters. Uptake of radiolabelled dopamine was time-, temperature- and concentration-dependent and was inhibited by decynium-22, a plasma membrane monoamine transporter inhibitor, tricyclic antidepressants desipramine and nortriptyline, both inhibitors of the norepinephrine transporter. Results of transporter mRNA expression indicate that the main transporters involved in cortical astrocyte dopamine uptake are the norepinephrine transporter and plasma membrane monoamine transporter. Both dopamine receptor subtypes were identified in cortical astrocyte cultures. Twenty-four-hour treatment of astrocyte cultures with apomorphine, a D1/D2 agonist, induced upregulation of D1 receptor, norepinephrine transporter and plasma membrane monoamine transporter, whereas the latter was downregulated by haloperidol and L-DOPA. Astrocytes take up dopamine by multiple transporters and express dopamine receptors, which are sensitive to dopaminergic drugs. The findings of this study could open a promising area of research for the fine-tuning of existing therapeutic strategies.Source: European journal of neuroscience. - ISSN 1460-9568 (Vol. , iss. [article no.] 16202, [ahead of print], Nov. 2023, str. 1-15)Type of material - e-articlePublish date - 2023Language - englishCOBISS.SI-ID - 177881091
Author
Sočan, Vesna |
Dolinar, Klemen |
Kržan, Mojca, 1962-
Topics
astrocytes |
dopamine |
rats |
central nervous system |
astrociti |
dopamin |
podgane |
centralni živčni sistem
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Sočan, Vesna | 53471 |
Dolinar, Klemen | 37636 |
Kržan, Mojca, 1962- | 08095 |
Source: Personal bibliographies
and: SICRIS
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