Studies of Frontal Lobe Brain Functioning in Schizophrenia
NCT ID: NCT00001258
Last Updated: 2025-12-24
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
1039 participants
OBSERVATIONAL
1993-11-26
Brief Summary
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Participants in this study will undergo a positron emission tomography (PET) scan of the brain while performing neuropsychological tests. Some of the tests involve cognitive operations that depend upon the frontal cortex. Interactions between frontal lobe activation, cognitive behavior, and neuropharmacology will be assessed by measuring regional cerebral blood flow (rCBF) during treatment with drugs that may affect frontal lobe physiology.
Detailed Description
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Conditions
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Keywords
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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1
Patients with schizophrenia spectrum disorder
Oxygen-15 Water
2
normal volunteers
No interventions assigned to this group
Interventions
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Oxygen-15 Water
Eligibility Criteria
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Exclusion Criteria
Normal control subjects will be recruited through the NIH normal volunteer program and through advertisement in the community and primarily through the "Genetic Study" under protocol 95-M-0150. An additional control group of non-schizophrenic siblings of patients with schizophrenia will also be recruited (from the community and protocol 95-M-0150, A Neurobiological Investigation of Patients with Schizophrenia Spectrum Disorders and Their Siblings). Control subjects will be matched to the patient groups by age, sex, and handedness. Control subjects with history of psychiatric or neurologic disorders or medical illnesses or surgeries that might have relevance to the investigation of brain physiology will be excluded. Normal subjects taking medications with relevance to cerebral blood flow and metabolism will be excluded from study.
Patients with schizophrenia will be recruited from the inpatient population of the NIMH Wards at the NIH Clinical Center and the sibling study protocol 95-M-0150. Diagnoses will be made by the NIMH clinical staff in accordance with DSM-IV(R). Patients with history of neurological illness other than those of interest to the study, or other medical illness or surgery that might have impact on the study of brain physiology, will be excluded. Inpatients on the NIMH Schizophrenia Ward who have signed protocol 89-MH-160 "Inpatient Evaluation of Neuropsychiatric Patients) will be studied when they have been withdrawn from all medications for two to four weeks. They will also be studied when they are stabilized on medication; however, no treatment decisions, for inpatients or outpatients, will be based upon this study. All inpatients will be carefully monitored on the NIMH/NIH wards as per protocol 89-MH-160.
Additional neuropsychiatric patients (such as those with affective disorder, Parkinson's Disease, special genetic disorders (e.g. William's Syndrome), and other neuropsychiatric disorders) will be recruited from the medical community, from NIH inpatient and outpatient services, and through the National Alliance for the Mentally Ill (NAMI). Patients will be identified by the presence of typical symptoms and signs elicited by history and examination. Diagnoses will conform to accepted diagnostic guidelines where applicable. Such patients will be excluded from study for 1) history of psychiatric or neurologic disorders other than those under investigation, 2) medical illnesses or surgeries that might have relevance to the investigation of brain physiology, 3) current medications that are not under investigation and that have relevance to cerebral blood flow and metabolism, and 4) IQ less than 70. Outpatients may be admitted overnight if necessary or otherwise applicable (e.g. those from out of town).
No cognitively impaired nonschizophrenic subjects are studied in this protocol. For Parkinsons Disease patients, information is obtained from referring physicians, from NIH medical records for participants already enrolled in the NIH system, and by phone from the potential participant. Further assessment is carried out by a neurologist or psychiatrist upon arrival at the NIH. For Williams syndrome patients, IQ testing is done off-site by a certified clinical neuropsychologist who refers patients for our study and who has followed large numbers of these rare individuals for years.
18 Years
90 Years
ALL
No
Sponsors
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National Institute of Mental Health (NIMH)
NIH
Responsible Party
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Principal Investigators
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Karen F Berman, M.D.
Role: PRINCIPAL_INVESTIGATOR
National Institute of Mental Health (NIMH)
Locations
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National Institutes of Health Clinical Center
Bethesda, Maryland, United States
Countries
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References
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Berman KF, Torrey EF, Daniel DG, Weinberger DR. Regional cerebral blood flow in monozygotic twins discordant and concordant for schizophrenia. Arch Gen Psychiatry. 1992 Dec;49(12):927-34. doi: 10.1001/archpsyc.1992.01820120015004.
Berman KF, Schmidt PJ, Rubinow DR, Danaceau MA, Van Horn JD, Esposito G, Ostrem JL, Weinberger DR. Modulation of cognition-specific cortical activity by gonadal steroids: a positron-emission tomography study in women. Proc Natl Acad Sci U S A. 1997 Aug 5;94(16):8836-41. doi: 10.1073/pnas.94.16.8836.
Mattay VS, Berman KF, Ostrem JL, Esposito G, Van Horn JD, Bigelow LB, Weinberger DR. Dextroamphetamine enhances "neural network-specific" physiological signals: a positron-emission tomography rCBF study. J Neurosci. 1996 Aug 1;16(15):4816-22. doi: 10.1523/JNEUROSCI.16-15-04816.1996.
Wei SM, Baller EB, Kohn PD, Kippenhan JS, Kolachana B, Soldin SJ, Rubinow DR, Schmidt PJ, Berman KF. Brain-derived neurotrophic factor Val66Met genotype and ovarian steroids interactively modulate working memory-related hippocampal function in women: a multimodal neuroimaging study. Mol Psychiatry. 2018 Apr;23(4):1066-1075. doi: 10.1038/mp.2017.72. Epub 2017 Apr 18.
Related Links
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NIH Clinical Center Detailed Web Page
Other Identifiers
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900014
Identifier Type: -
Identifier Source: org_study_id
90-M-0014
Identifier Type: -
Identifier Source: secondary_id