The DOI matches its Crossref record; 97 of the 99 references it cites were found in a registry or an index.
Dementia rating and nicotinic receptor expression in the prefrontal cortex in schizophrenia
Open accessAbstract
Background The etiology of dementia that occurs in patients with schizophrenia is not well understood. Nicotinic acetylcholine receptors have been implicated in cognitive function, and deficits in these receptors have been reported in schizophrenia.Methods The present study investigates possible associations of nicotinic receptor subunit expression in the dorsal lateral prefrontal cortex, an area known to be affected in schizophrenia, and dementia rating.Results alpha7 immunoreactivity was reduced by 20% to 28% and [(3)H]epibatidine binding was increased twofold in groups of patients with schizophrenia compared to normal control subjects matched for age, postmortem delay, and low levels of brain nicotine and cotinine. In contrast, no significant differences in alpha4, alpha3, or beta2 immunoreactivity or alpha7 messenger RNA expression were observed in schizophrenia patients compared with control subject values. Clinical dementia ratings in patients with schizophrenia were correlated with neither [(3)H]epibatidine binding nor nicotinic receptor subunit expression.Conclusions These data indicate no relationship between the trend for reduced neocortical alpha7 subunit protein expression in schizophrenia and dementia. Further investigations are required to establish whether the reduction in alpha7 protein in the dorsal lateral prefrontal cortex is associated with clinical features other than dementia in schizophrenia.
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“Notably, anomalies in the availability or expression of specific nAChR subunits have been implicated in depression [104] and schizophrenia patients [105, 106].”
From Adolescent nicotine exposure and persistent neurocircuitry changes: unveiling lifelong psychiatric risks (2025) · cites this paper as [105]
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Metadata
- Authors
- Martin-Ruiz, C. M., Haroutunian, V. H., Long, P., Young, A. H., Davis, K. L., Perry, E. K., & Court, J. A.
- Affiliations
- Icahn School of Medicine at Mount Sinai (US)
- Newcastle University (GB)
- Corresponding author
- Court, Jennifer A
- Venue
- Biological Psychiatry
- Publisher
- Elsevier BV
- Published
- 2003-12
- Volume
- 54
- Issue
- 11
- Pages
- 1222-1233
- ISSN
- 0006-3223 (ISSN-L)
- OpenAlex
- W2041781351
- Cited by
- 100
- References
- 99
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 1 · 2022: 4 · 2021: 2 · 2020: 3 · 2019: 5 · 2018: 5 · 2017: 3 · 2016: 4 · 2015: 8 · 2014: 7 · 2013: 6 · 2012: 2
- FWCI
- 0.92
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Locations
- Biological Psychiatry (publishedVersion)
- PubMed (publishedVersion)
- Newcastle University ePrints (Newcastle Univesity)
- Funders
- National Institutes of Health (5p01mh045212-05)
- National Institute of Mental Health (MH 45212)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Nicotinic Acetylcholine Receptors Study
- Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
- Keywords
- schizophrenia, dementia, nicotinic acetylcholine receptors, dorsolateral prefrontal cortex, epibatidine binding, receptor subunit expression, Clinical Dementia Rating, cognitive impairment
- MeSH terms
- Aged, Aged, 80 and over, Cotinine, Dementia, Female, Humans, Male, Middle Aged, Nicotine, Psychiatric Status Rating Scales, Pyridines, Radioligand Assay, Receptors, Nicotinic, RNA, Messenger, Schizophrenia, Severity of Illness Index, Smoking, Case-Control Studies, Prefrontal Cortex, Bridged Bicyclo Compounds, Heterocyclic
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