Cited by 182Neurotransmitter Receptor Influence on BehaviorNeuroscience and Neuropharmacology ResearchReceptor Mechanisms and Signaling

Striatal Fos expression is indicative of dopamine D1/D2 synergism and receptor supersensitivity.

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LaHoste, G J, Yu, J, Marshall, J F·1993·Proceedings of the National Academy of Sciences

Abstract

Immediate-early genes, such as c-fos, are responsive to dopaminergic stimulation in the brain and can have prolonged effects on the transcription of other genes. Thus, they may mediate some of the long-term consequences of altered dopaminergic transmission on striatal neurons, such as the supersensitivity to dopamine and its agonists that occurs in response to dopamine denervation. The two dopamine receptor families, D1 and D2, interact synergistically under normal conditions but independently after treatments that induce pronounced supersensitivity to dopamine agonists. Using immunocytochemical methods in rats treated with directly acting selective dopamine agonists, we have determined that dopamine-mediated expression of Fos and Fos-like antigens in the striatum normally requires concomitant stimulation of D1 and D2 receptors. Separate administration of a high dose of a selective D1 (SKF 38393; 20 mg/kg) or D2 (quinpirole; 3 mg/kg) agonist induced Fos-like immunoreactivity in few neurons, whereas combined administration of the D1 and D2 agonists produced patches of intensely stained immunoreactive nuclei in the caudate-putamen. Repeated administration of reserpine (1 mg/kg per day for 5 days), which causes supersensitivity to dopamine agonists and a breakdown in D1/D2 synergism behaviorally, also causes a change in control of c-fos, such that independent stimulation of D1 receptors by SKF 38393 (20 mg/kg) elicited pronounced Fos-like immunoreactivity in the striatum; combined treatment with SKF 38393 (20 mg/kg) and quinpirole (3 mg/kg) in reserpine-treated rats elicited Fos-like expression in no more neurons than did D1 agonism alone. These data demonstrate that dopamine-mediated Fos expression in the striatum is indicative of the state of D1/D2 synergism and receptor supersensitivity.

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Crossref · 10.1073/pnas.90.16.7451

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Authors
LaHoste, G. J., Yu, J., & Marshall, J. F.
Affiliations
University of California, Irvine (US)
Venue
Proceedings of the National Academy of Sciences
Published
1993-08-15
Volume
90
Issue
16
Pages
7451-7455
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2047619967
Cited by
182
References
35
Citations by year
2023: 2 · 2022: 3 · 2020: 2 · 2018: 1 · 2017: 2 · 2016: 2 · 2014: 3 · 2013: 2 · 2012: 4
FWCI
4.45
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5p50mh044188-05, 1r01ns028846-01)
  • U.S. Public Health Service
  • National Institute of Mental Health (MH44188)
  • National Institute of Neurological Disorders and Stroke (NS22698, NS 28846, R01NS022698)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
Keywords
c-fos, Fos-like immunoreactivity, dopamine D1 receptor, dopamine D2 receptor, receptor supersensitivity, striatum, caudate-putamen, dopamine agonists, reserpine, dopaminergic denervation, immediate early genes, striatal neurons
MeSH terms
Animals, Corpus Striatum, Drug Synergism, Ergolines, Immunohistochemistry, Male, Reference Values, Reserpine, Dopamine Agents, 2,3,4,5-Tetrahydro-7,8-dihydroxy-1-phenyl-1H-3-benzazepine, Proto-Oncogene Proteins c-fos, Genes, fos, Rats, Sprague-Dawley, Receptors, Dopamine D1, Receptors, Dopamine D2, Quinpirole, Rats

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