The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.
Increased Striatal Dopamine Transmission in Schizophrenia: Confirmation in a Second Cohort
Open accessAbstract
OBJECTIVE: The authors previously observed an increase in striatal dopamine transmission following amphetamine challenge in 15 untreated patients with schizophrenia compared to 15 matched healthy subjects. The purpose of this study was to replicate this finding in a new cohort of schizophrenic patients and healthy subjects. METHOD: Fifteen patients with schizophrenia and 15 healthy subjects matched for age, gender, ethnicity, and parental socioeconomic status were recruited for this study. Patients fulfilled DSM-IV criteria for schizophrenia, had no history of alcohol or substance abuse or dependence, and were neuroleptic free for a minimum of 21 days. Amphetamine-induced dopamine release was assessed by the reduction in dopamine D2 receptor availability induced by an acute amphetamine challenge (0.3 mg/kg, intravenous bolus). Reduction in D2 receptor availability was measured with single photon emission computed tomography and the D2 receptor radiotracer [123I]IBZM. RESULTS: No differences were observed between patients with schizophrenia and the comparison group in D2 receptor availability at baseline. Patients with schizophrenia exhibited a significantly larger reduction in D2 receptor availability following acute amphetamine challenge than the comparison group. In this study, the effect size was smaller than in the first study. Excess dopamine release following amphetamine was associated with transient emergence or worsening of positive symptoms. CONCLUSIONS: In this new cohort of subjects the authors replicated their initial observation of a dysregulation of striatal dopamine release in schizophrenia.
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Cites
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Self-citationMicrodialysis and SPECT measurements of amphetamine-induced dopamine release in nonhuman primates
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Cited by
Kapur, S. (2003) · American Journal of Psychiatry · doi:10.1176/appi.ajp.160.1.13 · Cited by 2,813
The Dopamine Hypothesis of Schizophrenia: Version III--The Final Common Pathway
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McCutcheon, R. A., Reis Marques, T., & Howes, O. D. (2020) · JAMA Psychiatry · doi:10.1001/jamapsychiatry.2019.3360 · Cited by 1,481
Dysconnection in schizophrenia: from abnormal synaptic plasticity to failures of self-monitoring
Stephan, K. E., Friston, K. J., & Frith, C. D. (2009) · Schizophrenia Bulletin · doi:10.1093/schbul/sbn176 · Cited by 1,134
Metadata
- Authors
- Abi-Dargham, A., Gil, R., Krystal, J., Baldwin, R. M., Seibyl, J. P., Bowers, M., van Dyck, C. H., Charney, D. S., Innis, R. B., & Laruelle, M.
- Venue
- American Journal of Psychiatry
- Published
- 1998-06-01
- Volume
- 155
- Issue
- 6
- Pages
- 761-767
- ISSN
- 0002-953X (ISSN-L)
- 1535-7228
- OpenAlex
- W1856679114
- Cited by
- 803
- References
- 17
- FWCI
- 18.37
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- CoChat. (2026). Citation check: Increased Striatal Dopamine Transmission in Schizophrenia: Confirmation in a Second Cohort. https://app.cochat.ai/papers/10.1176/ajp.155.6.761
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- Abi-Dargham, A., Gil, R., Krystal, J., Baldwin, R. M., Seibyl, J. P., Bowers, M., van Dyck, C. H., Charney, D. S., Innis, R. B., & Laruelle, M. (1998). Increased Striatal Dopamine Transmission in Schizophrenia: Confirmation in a Second Cohort. American Journal of Psychiatry. https://doi.org/10.1176/ajp.155.6.761
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
