- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT00058721
Single Photon Emission Computed Tomography to Study Receptors in Parkinson's Disease
SPECT Evaluation of Nicotinic Cholinergic Receptors in Parkinson's Disease
This study will use single photon emission computed tomography, or SPECT (see below), to examine brain nicotine receptors in evaluating the role of a chemical called acetylcholine in memory and other problems in Parkinson's disease (PD). Acetylcholine acts by binding to these nicotine receptors.
Healthy normal volunteers and patients with Parkinson's disease 40 years of age and older, with or without dementia, may be eligible for this study. Candidates will be screened with physical and neurological examinations, a pen and paper test of memory and other mental functions, blood tests, and, for women of childbearing potential, a pregnancy test. Patients with cognition problems will have more intensive mental function tests.
All participants will undergo the following procedures:
- Magnetic resonance imaging (MRI): This test uses a strong magnetic field and radio waves to show structural and chemical changes in the brain. During the scan, the subject lies on a table in a narrow cylinder (the scanner). The time required in the scanner is about 1 hour, during which the subject is asked to lie very still for 10 to 15 minutes at a time. He or she can speak with a staff member via an intercom system at all times during the procedure.
- SPECT: This nuclear medicine test produces a picture of the receptors in the brain. On the night before the scan, the day of the scan, and for 4 days after the scan, subjects take an oral dose of potassium iodide to protect the thyroid gland from the radioactive tracer used in the SPECT procedure. (People allergic to potassium iodide will take potassium perchlorate instead.) Before the scan, small radioactive markers containing 99Tc are glued to the subject's head. Two catheters (thin, flexible tubes) are placed in veins in the arms to inject the radioactive tracer [123I]5-I-A-85380 and to draw blood samples. Another catheter is placed in an artery in the wrist to draw arterial blood samples. During the scan, the subject lies on a bed with his or her head held still with a head holder. The scans are taken over a 6-hour period after injection of [123I]5-I-A-85380. An electrocardiogram, respiration, and blood pressure measures are taken before the tracer is injected, then 5 minutes after the injection, and again 30 to 60 minutes after the injection. Blood and urine samples are collected 5 to 6 hours after starting the scan. Participants are asked to urinate at least every 2 hours for 12 hours after injection of [123I]5-I-A-85380 to decrease radiation exposure.
Aperçu de l'étude
Statut
Les conditions
Intervention / Traitement
Description détaillée
Type d'étude
Inscription
Contacts et emplacements
Lieux d'étude
-
-
Maryland
-
Bethesda, Maryland, États-Unis, 20892
- National Institute of Neurological Disorders and Stroke (NINDS)
-
-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Enfant
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
Sexes éligibles pour l'étude
La description
INCLUSION CRITERIA -Patients:
Age greater than or equal to 40.
Diagnosis of PD.
Consent.
Responsible Caregiver (only for patients with dementia).
INCLUSION CRITERIA - Controls:
Age greater than or equal to 40.
Consent.
EXCLUSION CRITERIA - Patients and Controls:
Secondary cause of Parkinsonism, e.g. Wilson's disease, neuroleptic use.
Dementia not due to PD, abnormal screening labs for dementia
Or severe dementia with MMSE less than 15.
Neurological disorder other than PD that would effect protocol (e.g. stroke, Alzheimer's disease).
Use of cholinergic or anticholinergic agents within 60 days.
Abnormal MRI other than mild atrophy.
Claustrophobia.
Pregnancy or breast feeding.
Prior participation in other research protocols or clinical care in the last year such that radiation exposure would exceed the annual limits.
Any conditions that increase risk for MRI (pacemaker, metallic foreign body, etc.).
Any medical condition that in the opinion of the investigators would, interfere with the safe conduct of the study.
Both healthy subjects and patients will be excluded if they have more than moderate hypertension. The subject may be on anti-hypertensive medications. The initial screening must show no more than moderate hypertension- i.e. less than 160/95. On baseline evaluation on the day of the scan (i.e., before injection of tracer), the subject must be asymptomatic (no headache, dizziness, neurological symptoms, or blurred vision) AND have sustained BP less than 180/100.
History of smoking tobacco, use of nicotine gum or patch or other uses of nicotine within last 5 years.
Inability to provide consent.
Plan d'étude
Comment l'étude est-elle conçue ?
Collaborateurs et enquêteurs
Publications et liens utiles
Publications générales
- Fujita M, Tamagnan G, Zoghbi SS, Al-Tikriti MS, Baldwin RM, Seibyl JP, Innis RB. Measurement of alpha4beta2 nicotinic acetylcholine receptors with [123I]5-I-A-85380 SPECT. J Nucl Med. 2000 Sep;41(9):1552-60.
- Abreo MA, Lin NH, Garvey DS, Gunn DE, Hettinger AM, Wasicak JT, Pavlik PA, Martin YC, Donnelly-roberts DL, Anderson DJ, Sullivan JP, Williams M, Arneric SP, Holladay MW. Novel 3-Pyridyl ethers with subnanomolar affinity for central neuronal nicotinic acetylcholine receptors. J Med Chem. 1996 Feb 16;39(4):817-25. doi: 10.1021/jm9506884.
- Charpantier E, Barneoud P, Moser P, Besnard F, Sgard F. Nicotinic acetylcholine subunit mRNA expression in dopaminergic neurons of the rat substantia nigra and ventral tegmental area. Neuroreport. 1998 Sep 14;9(13):3097-101. doi: 10.1097/00001756-199809140-00033.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude
Achèvement de l'étude
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Estimation)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 030006
- 03-N-0006
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .
Essais cliniques sur Maladie de Parkinson
-
ProgenaBiomeRecrutementMaladie de Parkinson | Maladie de Parkinson avec démence | Syndrome de Parkinson-Démence | Maladie de Parkinson 2 | Maladie de Parkinson 3 | Maladie de Parkinson 4États-Unis
-
National Heart, Lung, and Blood Institute (NHLBI)ComplétéMaladie de Parkinson 6, début précoce | Maladie de Parkinson (autosomique récessive, début précoce) 7, humain | Maladie de Parkinson autosomique récessive, début précoce | Maladie de Parkinson, début précoce autosomique récessif, digénique, Pink1/Dj1États-Unis
-
Ahram Canadian UniversityAin Shams UniversityRecrutementMaladie de Parkinson | Parkinson | Maladie de Parkinson et parkinsonismeEgypte
-
Samuel Vilchez, PhDNational Autonomous University of Nicaragua; Wake Forest University; GID BIO... et autres collaborateursComplétéMaladie de Parkinson et parkinsonisme | Maladie de Parkinson idiopathiqueNicaragua
-
King's College LondonGlaxoSmithKlineComplétéMaladie de Parkinson | Maladie de Parkinson idiopathique | Maladie de Parkinson, PARK8Royaume-Uni
-
Ohio State UniversityComplétéLa maladie de Parkinson | Maladie de Parkinson | Maladie de Parkinson idiopathique | Maladie de Parkinson idiopathique | Maladie de Parkinson, idiopathique | Maladie de Parkinson, idiopathiqueÉtats-Unis
-
National Yang Ming UniversityInconnueMaladie de Parkinson à début précoce | Maladie de Parkinson à un stade précoce
-
Assistance Publique - Hôpitaux de ParisFrance Parkinson AssociationInconnueContrôles sains | Maladie de Parkinson avec mutation LRRK2 | Maladie de Parkinson sans mutation LRRK2France
-
University of Campania "Luigi Vanvitelli"Neuromed IRCCSInconnueMaladie de Parkinson secondaireItalie
-
Medical College of WisconsinRetiré
Essais cliniques sur I-123-5-IA85380
-
Institute for Neurodegenerative DisordersRésiliéLa maladie d'AlzheimerÉtats-Unis
-
Molecular Insight Pharmaceuticals, Inc.Complété
-
Alseres Pharmaceuticals, IncInconnue
-
GE HealthcareComplétéInsuffisance cardiaque congestiveÉtats-Unis
-
GE Healthcarei3 StatprobeComplété
-
Institute for Neurodegenerative DisordersMolecular NeuroImagingComplétéLa maladie d'AlzheimerÉtats-Unis
-
Ake NorbergComplétéEn bonne santé | SIRSSuède
-
Asan Medical CenterRésiliéPhéochromocytome | ParagangliomeCorée, République de
-
Assistance Publique - Hôpitaux de ParisAssociation Française contre les Myopathies (AFM), Paris; ARS (Association... et autres collaborateursComplétéLa sclérose latérale amyotrophiqueFrance
-
Chang Gung Memorial HospitalComplété