Cited by 19Neurotransmitter Receptor Influence on BehaviorSubstance Abuse Treatment and OutcomesNeuroscience and Neuropharmacology Research

Chronic cocaine administration reduces striatal dopamine terminal density and striatal dopamine release which leads to drug-seeking behaviour

Lee, J., Parish, C.L., Tomas, D., Horne, M.K.·2011·Neuroscience

Abstract

Drug addiction is associated with altered dopamine (DA) neurotransmission in the basal ganglia. We have previously shown that chronic stimulation of the dopamine D2 receptor (D(2)R) with cocaine results in reduced striatal DA terminal density. The aims of this study were to establish whether this reduction in DA terminal density results in reduced striatal DA release and increased cocaine-seeking behaviour and whether D(2)R antagonism can restore the cocaine-induced alterations in DA neurotransmission and drug-seeking behaviour. Rats were housed individually and either control, cocaine, haloperidol (D(2)R antagonist), or cocaine and haloperidol was administered in the drinking water for 16 weeks. Chronic cocaine treatment, which reduced striatal DA terminal density by 20%, resulted in a reduction in basal (-34%) and cocaine-evoked (-33%) striatal DA release and increased cocaine-seeking behaviour. These cocaine-mediated effects on striatal DA terminal density, DA release and drug-seeking could be prevented by co-administration with haloperidol. Basal and cocaine-evoked DA release in the striatum directly correlated with DA terminal density and with preference for cocaine. We conclude that striatal DA terminal density and DA release is an important factor in maintaining drug preference and should be considered as a factor in drug-seeking behaviour and relapse.

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Crossref · 10.1016/j.neuroscience.2010.11.055

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Authors
Lee, J., Parish, C. L., Tomas, D., & Horne, M. K.
Affiliations
The University of Melbourne (AU)
Corresponding author
Horne, M.K.
Venue
Neuroscience
Publisher
Elsevier BV
Published
2011-02
Volume
174
Pages
143-150
ISSN
0306-4522 (ISSN-L)
OpenAlex
W2064960613
Cited by
19
References
68
Citations by year
2020: 1 · 2018: 1 · 2017: 2 · 2016: 1 · 2015: 2 · 2014: 2 · 2013: 6 · 2012: 3
FWCI
1.29
Type
journal article
Language
en
Open access
closed
Locations
  • Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Epidemiology › Substance Abuse Treatment and Outcomes
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
chronic cocaine administration, dopamine release, dopamine D2 receptor, haloperidol, dopamine D2 receptor antagonism, drug addiction, basal ganglia, relapse
MeSH terms
Animals, Cocaine, Corpus Striatum, Dopamine, Haloperidol, Male, Synaptic Transmission, Rats, Wistar, Presynaptic Terminals, Rats, Drug-Seeking Behavior, Dopamine D2 Receptor Antagonists

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