Cited by 37Adenosine and Purinergic SignalingNeurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology Research

Adenosine A1receptor‐mediated inhibition of dopamine release from rat striatal slices is modulated by D1dopamine receptors

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O'Neill, C., Nolan, B. J., Macari, A., O'Boyle, K. M., O'Connor, J. J.·2007·European Journal of Neuroscience

Abstract

Dopamine release is regulated by presynaptic dopamine receptors and interactions between adenosine and dopamine receptors have been well documented. In the present study, dopamine release from isolated striatal slices from Wistar rats was measured using fast cyclic voltammetry. Single‐pulse stimulation (0.1 ms, 10 V) was applied every 5 min over a 2‐h period. Superfusion with the adenosine (A)1 receptor agonist N 6‐cyclopentyladenosine (CPA), but not the A 2 receptor agonist 3‐[4‐[2‐[[6‐amino‐9‐[(2R,3R,4S,5S)‐5‐(ethylcarbamoyl)‐3,4‐dihydroxy‐oxolan‐2‐yl]purin‐2‐yl]amino]ethyl] phenyl]propanoic acid (CGS 21680), inhibited dopamine release in a concentration‐dependent manner (IC 50 3.80 × 10−7 m;n = 10). The dose–response curve to CPA was shifted to the right (IC 50 6.57 × 10−6 m;n = 6,P < 0.05 vs. control) by the A 1 receptor antagonist 8‐cyclopentyl‐1,3‐dipropylxanthine (DPCPX). Neither the D 1 agonist 6‐chloro‐APB nor the D 1 antagonist R‐(+)‐8‐chloro‐2,3,4,5‐tetrahydro‐3‐methyl‐5‐phenyl‐1H‐3‐ benzazepine‐7‐ol (SCH 23390) altered dopamine release on their own. However, SCH 23390 (3 µ m) significantly attenuated the response to CPA (IC 50 1.44 × 10−5 m;n = 6,P < 0.01 vs. control). Furthermore, the inhibitory effect of CPA was significantly increased in the presence of 6‐chloro‐APB (1 µ m). In radioligand binding experiments, CPA interacted with high‐ and low‐affinity states of [3 H]DPCPX‐lableled A 1 receptors. The high‐affinity agonist binding to A 1 receptors was inhibited by the stable guanosine triphosphate analogue Gpp(NH)p. In contrast, neither the proportion nor the affinity of high‐affinity A 1 receptors was altered by dopamine or SCH 23390. These results provide evidence that the inihibition of dopamine release by adenosine A 1 receptors is dependent, at least in part, on the simultaneous activation of D 1 dopamine receptors. While the mechanism underlying this interaction remains to be determined, it does not appear to involve an intramembrane interaction between A 1 and D 1 receptors.

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Crossref · 10.1111/j.1460-9568.2007.05953.x

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  • Adenosine, particularly through A1 receptor activation, inhibits release of neurotransmitters involved in central excitability and neural network regulation, including norepinephrine, acetylcholine, dopamine, and glutamate.

    “Adenosine, particularly through A1 receptor activation, inhibits the release of neurotransmitters involved in central excitability and neural network regulation, including norepinephrine [32], acetylcholine [33,34], dopamine [35], and glutamate [36].”

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Authors
O'Neill, C., Nolan, B. J., Macari, A., O'Boyle, K. M., & O'Connor, J. J.
Affiliations
University College Dublin (IE)
Corresponding author
O'Connor, J. J.
Venue
European Journal of Neuroscience
Publisher
Wiley
Published
2007-12
Volume
26
Issue
12
Pages
3421-3428
ISSN
  • 0953-816X (ISSN-L)
  • 1460-9568
OpenAlex
W2111835847
Cited by
37
References
47
Citations by year
2026: 1 · 2024: 1 · 2022: 1 · 2021: 2 · 2020: 2 · 2017: 2 · 2016: 5 · 2015: 4 · 2014: 3 · 2013: 3 · 2012: 1
FWCI
1.86
Type
journal article
Language
en
Open access
Locations
  • European Journal of Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
adenosine A1 receptor, dopamine release, dopamine D1 receptor, striatum, presynaptic dopamine receptors, N6-cyclopentyladenosine, DPCPX, SCH 23390
MeSH terms
Adenosine, Animals, Corpus Striatum, Dopamine, Electric Stimulation, Ligands, Male, Rats, Wistar, Receptors, Dopamine D1, Dopamine Agonists, Dopamine Antagonists, Receptor, Adenosine A1, Rats, Adenosine A1 Receptor Agonists, Adenosine A1 Receptor Antagonists, In Vitro Techniques

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