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- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT03999190
Imaging Dopamine D2 Agonist Binding Sites in Schizophrenia
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Tipo de estudio
Contactos y Ubicaciones
Ubicaciones de estudio
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New York
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New York, New York, Estados Unidos, 10016
- NYU Langone Health
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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:
HEALTHY CONTROLS
- Males or females between 18 and 35 years old (History)
Absence of current (i.e. last six months) psychiatric conditions (including alcohol and drug abuse). Subjects with a history of a non-psychotic psychiatric disorder who have been asymptomatic and not taking medication for the past 6 months may be eligible.
(History, SCID-NP (non-patient version))
A negative urine toxicology with the exception of cannabis; in the case of a positive urine cannabis test a salivary cannabis test will be administered on the day of the PET scans to ensure subjects have not used within 24 - 48 hours.
(Urine toxicology)
- Medically Healthy (History, EKG, physical, labs (detailed labs are listed under screening procedures))
- Weight between 44 and 115 kg (physical exam)
- Baseline systolic BP of < 150 and > 100, diastolic BP < 90 and >60 and baseline HR less than 90 (Physical exam)
SUBJECTS WITH SCHIZOPHRENIA Criteria (Assessment)
- Males or females between 18 and 35 years old (History)
- Fulfill DSM-V criteria for schizophrenic illness, schizophreniform or schizoaffective disorder (History, SCID)
A negative urine toxicology with the exception of cannabis; in the case of a positive urine cannabis test a salivary cannabis test will be administered on the day of the PET scans to ensure subjects have not used within 24 - 48 hours.
(Urine toxicology)
- Medically Healthy (History, EKG, physical, labs (detailed labs are listed in screening procedures))
- Clinical Global Impression-Severity scale (CGI-S) less than or equal to 4 (moderately ill).
- Off all medications for at least 1 week, does not wish to restart medications immediately and clinically stable while off medications. With the exception of lorazepam at a maximal dose of 2 mg QD, up to 24 h prior to the scans, and absence of injection of depot medication within the last 6 months (Interview and discussion with treating clinician)
- Weight between 44 and 115 kg (Physical exam)
- Baseline systolic BP of < 150 and > 100, diastolic BP < 90 and >60 and baseline HR less than 90 (Physical exam)
Exclusion Criteria:
HEALTHY CONTROLS
- Pregnancy or lactation, lack of effective birth control during 15 days before the scans* (Blood or Urine pregnancy test, history)
Presence or positive history of serious medical or neurological illness, including low hemoglobin and seizure history.
(Medical and neurological history, EKG, blood tests)
Any current use (within past month) of amphetamines, opiates, cocaine, sedative-hypnotics, ecstasy PCP.
(History, urine toxicology)
- Any use of cannabis beyond occasional use (i.e. more than 2 - 4 times per month) (History, saliva cannabis test)
Metal implants or paramagnetic objects contained within the body which may interfere with the MRI scan (but not limited to, those with a pacemaker, presence of metallic fragments near the eyes or spinal cord, or cochlear implant. Dental fillings do not present a risk for MRI), as determined in consultation with a neuroradiologist and according to the guidelines set forth in the following reference book commonly used by neuroradiologists: "Guide to MR procedures and metallic objects" Shellock, PhD, Lippincott Williams and Wilkins, NY 2001. If there is any doubt, subjects will be excluded.
(Interview and history)
Lifetime exposure to radiation in the workplace; or participation in research protocols involving exposure to radiation within the previous year such that the total cumulative annual radiation dose (i.e., from participation in the previous research studies and this study) would exceed the radiation dose limits specified in the FDA regulations at 21 CFR 361.1, Radioactive Drugs Considered Generally Safe and Effective (i.e. annual cumulative radiation dose limit = 5 rems to gonads, blood-forming organs, lens of eye, whole body; 15 rems to other organs).
(Interview and history)
- Medical history of chronic obstructive pulmonary disease or other chronic respiratory disorders (Medical history)
- More than one risk factor for coronary artery disease (smoking, cholesterol > 240 mg/dl, sedentary lifestyle) baseline SBP > 140 of DBP> 90) (History, physical examination and blood chemistry)
- Positive Allen Test indicating lack of collateral flow to hand (Physical Exam)
- Subjects with family history of a psychotic disorder, drug and alcohol Abuse/Dependence in first-degree relatives. (History)
SUBJECTS WITH SCHIZOPHRENIA Criteria (Assessment)
- DSM-V disorder other than schizophrenia, schizophreniform or schizoaffective disorder (History, SCID)
Any current use (within past month) of amphetamines, opiates, cocaine, sedative-hypnotics, ecstasy PCP.
(History, urine toxicology)
- Any use of cannabis beyond occasional use (i.e. more than 2 - 4 times per month) (History, saliva cannabis test)
Antipsychotic medications in the last 3 weeks (6 months for depot medications) prior to the first PET scanning session.
(History)
- Pregnancy or lactation, lack of effective birth control - OCP are allowed. (Pregnancy test, history)
Presence or positive history of severe medical or neurological illness or any cardiovascular disease, low hemoglobin, and seizure history.
(Medical and neurological history, neurological exam, EKG, blood chemistry)
- Lack of capacity to give informed consent (Interview)
- History of significant violent or suicidal behavior (Interview and review of records)
Metal implants or paramagnetic objects contained within the body which may interfere with the MRI scan (but not limited to, those with a pacemaker, presence of metallic fragments near the eyes or spinal cord, or cochlear implant. Dental fillings do not present a risk for MRI), as determined in consultation with a neuroradiologist and according to the guidelines set forth in the following reference book commonly used by neuroradiologists: "Guide to MR procedures and metallic objects" Shellock, PhD, Lippincott Williams and Wilkins, NY 2001. If there is any doubt, subjects will be excluded.
(Interview and history)
Lifetime exposure to radiation in the workplace; or participation in research protocols involving exposure to radiation within the previous year such that the total cumulative annual radiation dose (i.e., from participation in the previous research studies and this study) would exceed the radiation dose limits specified in the FDA regulations at 21 CFR 361.1, Radioactive Drugs Considered Generally Safe and Effective (i.e. annual cumulative radiation dose limit = 5 rems to gonads, blood-forming organs, lens of eye, whole body; 15 rems to other organs).
(Interview and history)
- Medical history of chronic obstructive pulmonary disease or other chronic respiratory disorders (Medical history)
- More than one risk factor for coronary artery disease (smoking, cholesterol > 240 mg/dl, sedentary lifestyle) baseline SBP > 140 of DBP> 90) (History, physical examination and blood chemistry)
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
Cohortes e Intervenciones
Grupo / Cohorte |
Intervención / Tratamiento |
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30 controles sanos
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[11C]NPA radiotracer, 2 injection per subject Antagonist ([11C]raclopride) and agonist ([11C]NPA) radiotracer will be used sequentially to measure binding potential (BPND) under baseline conditions and 3-hours following oral administration of 0.5 mg/kg amphetamine in the same 30 medication free subjects with schizophrenia (MF-S) and 30 healthy control subjects (HC). [11C]raclopride radiotracer, 2 injections per subject Antagonist ([11C]raclopride) and agonist ([11C]NPA) radiotracer will be used sequentially to measure binding potential (BPND) under baseline conditions and 3-hours following oral administration of 0.5 mg/kg amphetamine in the same 30 medication free subjects with schizophrenia (MF-S) and 30 healthy control subjects (HC).
Dextroamphetamine, one oral administration of 0.5 mg/kg per subject Antagonist ([11C]raclopride) and agonist ([11C]NPA) radiotracer will be used sequentially to measure binding potential (BPND) under baseline conditions and 3-hours following oral administration of 0.5 mg/kg amphetamine in the same 30 medication free subjects with schizophrenia (MF-S) and 30 healthy control subjects (HC).
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30 subjects with schizophrenia
|
[11C]NPA radiotracer, 2 injection per subject Antagonist ([11C]raclopride) and agonist ([11C]NPA) radiotracer will be used sequentially to measure binding potential (BPND) under baseline conditions and 3-hours following oral administration of 0.5 mg/kg amphetamine in the same 30 medication free subjects with schizophrenia (MF-S) and 30 healthy control subjects (HC). [11C]raclopride radiotracer, 2 injections per subject Antagonist ([11C]raclopride) and agonist ([11C]NPA) radiotracer will be used sequentially to measure binding potential (BPND) under baseline conditions and 3-hours following oral administration of 0.5 mg/kg amphetamine in the same 30 medication free subjects with schizophrenia (MF-S) and 30 healthy control subjects (HC).
Dextroamphetamine, one oral administration of 0.5 mg/kg per subject Antagonist ([11C]raclopride) and agonist ([11C]NPA) radiotracer will be used sequentially to measure binding potential (BPND) under baseline conditions and 3-hours following oral administration of 0.5 mg/kg amphetamine in the same 30 medication free subjects with schizophrenia (MF-S) and 30 healthy control subjects (HC).
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
---|---|---|
base line Binding Potential (BPND)
Periodo de tiempo: 37 Days
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PET outcome measure of the density of "available" neuroreceptors and the affinity of a drug to that neuroreceptor.
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37 Days
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percent change in BPND
Periodo de tiempo: 37 Days
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Difference between BPND measured in the post-amphetamine condition (BPND AMPH) and BPND measured in the baseline condition (BPND BASE) expressed as a percentage of BPND BASE: BPND = 100 * (BPND AMPH - BPND BASE)/BPND BASE.
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37 Days
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: William Frankle, New York Langone Health
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio (Anticipado)
Finalización primaria (Anticipado)
Finalización del estudio (Anticipado)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Actual)
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
Términos MeSH relevantes adicionales
- Desordenes mentales
- Espectro de esquizofrenia y otros trastornos psicóticos
- Esquizofrenia
- Efectos fisiológicos de las drogas
- Agentes neurotransmisores
- Mecanismos moleculares de acción farmacológica
- Depresores del sistema nervioso central
- Agentes antipsicóticos
- Agentes tranquilizantes
- Drogas psicotropicas
- Inhibidores de la captación de neurotransmisores
- Moduladores de transporte de membrana
- Agentes de dopamina
- Antagonistas de la dopamina
- Inhibidores de la captación de dopamina
- Estimulantes del Sistema Nervioso Central
- Dextroanfetamina
- Racloprida
Otros números de identificación del estudio
- 18-01207
Información sobre medicamentos y dispositivos, documentos del estudio
Estudia un producto farmacéutico regulado por la FDA de EE. UU.
Estudia un producto de dispositivo regulado por la FDA de EE. UU.
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
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