doi: 10.1097/00001756-200308260-00021.
Adenosine A3 receptors are located in neurons of the rat hippocampus
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- PMID: 14502093
- DOI: 10.1097/00001756-200308260-00021
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Adenosine A3 receptors are located in neurons of the rat hippocampus
Neuroreport.
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Abstract
Adenosine is a neuromodulator acting mainly via inhibitory A1 and facilitatory A2A receptors. Whole tissue PCR also identified adenosine A3 receptors in the brain and A3 receptor agonists affect CNS neuronal responses and viability. However, recent reports failed to detect A3 receptor expression in CNS neurons and showed that A3 receptor agonists can bind and activate A1 receptors. We now present evidence for the presence of A3 receptor mRNA in CNS neurons using single cell PCR analysis of laser dissected hippocampal neurons. Western blot analysis showed that A3 receptors are present in rat hippocampal nerve terminal membranes. This indicates that A3 receptors are present in CNS neurons in the hippocampus.
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