- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT01384604
Neurophysiological Studies in Schizophrenia and Psychiatric Disorders (BSNIP)
Neurophysiological and Genetic Studies in Schizophrenia and Other Psychiatric Disorders
The overall goal of this project is to identify intermediate phenotypes for psychosis across the schizophrenia and bipolar disorders boundary with implications for future genetic studies. Recent studies provide considerable evidence that schizophrenia and psychotic bipolar disorder may share overlapping etiologic determinants. Identifying disease-related genetic effects is a major focus in schizophrenia and bipolar research, with enormous implications for diagnosis and treatment for these two disorders. Efforts have been multifaceted, with the ultimate goal of describing causal paths from specific genetic variants, to changes in neuronal functioning, to altered brain anatomy, to behavioral and functional impairments. Parallel efforts have identified and refined several alternative endophenotypes that are stable, heritable, have (partly) known biological substrates, and are associated with psychosis liability. Although many such endophenotypes have been individually studied in schizophrenia, and to a lesser extent in bipolar disorder, no study has comprehensively assessed a broad panel of these markers in the two disorders with parallel recruitment, and the extent to which they mark independent aspects of psychosis risk, or their overlap in the two disorders. In this research project, we will examine a broad panel of putative endophenotypes in affected individuals and their first degree, biological relatives in order to: 1) characterize the degree of familial phenotypic overlap between schizophrenia and psychotic bipolar disorders; 2) identify patterns of endophenotypes unique to the two disorders; and, 3) contrast the heritability of endophenotypes across the disorders. We will obtain measures of neurophysiology (e.g., eye tracking, P50 gating, PPI, and P300), neurocognition (e.g., attention/vigilance, episodic and working memory), and brain structure (e.g., volumes of gray and white matter in specified brain regions). Blood samples will also be collected and stored for formal DNA linkage analyses using the independent phenotypes identified above. All volunteers will also be given the option to donate dermal biopsies for future research studies.
Establishing similarities and differences in the endophenotypic signatures within schizophrenia and bipolar families will provide important insights for future genetic studies, and clarify concepts about common and distinct aspects of pathophysiology, potentially meaningful heterogeneity with disorders, and the clinical boundaries of the two most common psychotic disorders in adult psychiatry. This line of investigation will potentially impact our conceptualization of psychotic disorders, help us make critical strides to identify the pathophysiology of psychosis, and guide development of new specific treatments targeting particular deficits.
Descripción general del estudio
Estado
Condiciones
Tipo de estudio
Inscripción (Anticipado)
Contactos y Ubicaciones
Ubicaciones de estudio
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Texas
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Dallas, Texas, Estados Unidos, 75390
- University of Texas Southwestern Medical Center
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Método de muestreo
Población de estudio
Descripción
Inclusion Criteria:
- DSM-IV diagnosis of schizophrenia, schizoaffective disorder, or bipolar disorder with psychotic features
- Ages 15-70 years old
- Must have a first degree, biological relative in the same age range who is willing and available to participate
Exclusion Criteria:
- Diagnosis of an organic brain disease
- Meets criteria for alcohol or substance abuse with the last month; alcohol or substance dependence within the last 3 months; or, has an extensive history of drug dependence
- History of seizures, serious head injury, concussions, or other evidence of brain disease
- Medical illnesses that are not currently well-controlled
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Modelos observacionales: Basado en la familia
- Perspectivas temporales: Transversal
Colaboradores e Investigadores
Patrocinador
Colaboradores
Publicaciones y enlaces útiles
Enlaces Útiles
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- STU 112010-097
- 1R01MH077851-01A2 (Subvención/contrato del NIH de EE. UU.)
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