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Schizophrenia is associated with elevated amphetamine-induced synaptic dopamine concentrations: Evidence from a novel positron emission tomography method
Open accessAbstract
A major line of evidence that supports the hypothesis of dopamine overactivity in schizophrenia is the psychomimetic potential of agents such as amphetamine that stimulate dopamine outflow. A novel brain imaging method provides an indirect measure of in vivo synaptic dopamine concentration by quantifying the change in dopamine receptor radiotracer binding produced by agents that alter dopamine release but do not themselves bind to dopamine receptors. The purpose of this investigation is (i) to determine the sensitivity (i.e., amount of dopamine reflected in radiotracer binding changes) of this method by examining the relationship between amphetamine-induced changes in simultaneously derived striatal extracellular dopamine levels with in vivo microdialysis and striatal binding levels with the dopamine D2/D3 positron-emission tomography radioligand [11C]raclopride in nonhuman primates, and (ii) to test the hypothesis of elevated amphetamine-induced synaptic dopamine levels in schizophrenia. In the nonhuman primate study (n = 4), doubling the amphetamine dose produced a doubling in [11C]raclopride specific binding reductions. In addition, the ratio of percent mean dopamine increase to percent mean striatal binding reduction for amphetamine (0.2 mg/kg) was 44:1, demonstrating that relatively small binding changes reflect large changes in dopamine outflow. In the clinical study, patients with schizophrenia (n = 11) compared with healthy volunteers (n = 12) had significantly greate…
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“The most widely replicated abnormality is that of elevated striatal dopamine availability – in acute psychoses of both schizophrenia (Laruelle et al., 1996; Breier et al., 1997) and epilepsy (Reith et al., 1994).”
From The Computational Anatomy of Psychosis (2013) · cites this paper as Breier et al., 1997
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Kagan, J. (2002) · Disease Markers · doi:10.1155/1998/698239 · Cited by 1
Rezeptordarstellung mit der Positronen-Emissions-Tomographie
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The Role of Neuroimaging in Development of and Treatment With Antipsychotics
Verhoeff, N., & Kapur, S. (2001) · doi:10.1106/ryyj-eemb-9ka4-d5dh · Cited by 1
Dynamic Neurotransmitter Interactions Measured with PET
Schiffer, W., & Dewey, S. (2001) · doi:10.1002/0470846380.ch21 · Cited by 1
Dopamine Receptors and Dopamine Release
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Applications of Small-Animal Imaging in Neurology and Psychiatry
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“The B/I approach has been successfully used to quantify amphetamine-induced dopamine release in the striatum and some extrastriatal regions with D 2/3 receptor antagonist radioligands [ 123 I]Iodobenzamide [17, 18], [ 11 C]Raclopride [ 19 –21], and [ 18 F]Fallypride [22].”
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Metadata
- Authors
- Breier, A., Su, T.-P., Saunders, R., Carson, R. E., Kolachana, B. S., de Bartolomeis, A., Weinberger, D. R., Weisenfeld, N., Malhotra, A. K., Eckelman, W. C., & Pickar, D.
- Affiliations
- National Institutes of Health (US)
- ORCID
- Venue
- Proceedings of the National Academy of Sciences
- Publisher
- National Academy of Sciences
- Published
- 1997-03-18
- Volume
- 94
- Issue
- 6
- Pages
- 2569-2574
- ISSN
- 0027-8424 (ISSN-L)
- 1091-6490
- PMC
- PMC20129
- OpenAlex
- W2150760506
- Cited by
- 1,154
- References
- 43
- Citations by year
- 2026: 8 · 2025: 12 · 2024: 19 · 2023: 9 · 2022: 17 · 2021: 22 · 2020: 20 · 2019: 26 · 2018: 29 · 2017: 27 · 2016: 34 · 2015: 35 · 2014: 44 · 2013: 51 · 2012: 54
- FWCI
- 36.57
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Locations
- Proceedings of the National Academy of Sciences (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
- Health Sciences › Medicine › Clinical Neurology › Parkinson's Disease Mechanisms and Treatments
- Keywords
- schizophrenia, synaptic dopamine, amphetamine, [11C]raclopride, striatum, dopamine release, microdialysis, non-human primates
- MeSH terms
- Amphetamine, Animals, Carbon Radioisotopes, Corpus Striatum, Dopamine, Humans, Macaca mulatta, Reference Values, Regression Analysis, Salicylamides, Schizophrenia, Synapses, Tomography, Emission-Computed, Microdialysis, Raclopride
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