- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT00315575
Memory Imaging of Normal Aging
BOLD and Perfusion fMRI of Alzheimer's Disease Risk
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
The overall goals of this project are to identify consistent patterns of variance in brain function in patients at risk for Alzheimer's Disease by using APOE ε4 as a marker for disease risk. The activation Blood Oxygen Level Dependency (BOLD) signal will be compared to both resting and activation perfusion signals to assess the variability of cerebral blood flow as it relates to the BOLD signal. Each participant will be imaged on a 3T MRI scanner while performing an associate episodic memory task.
A total of 90 individuals will be recruited for this study. Participants will be non-demented, right handed, adults with or without at least one APOE ε4 allele. Groups will be split as follows: A) ages 25-39: non-ε4 (n=15); B) ages 25-39: +ε4 (n=15); C) ages 40-49: non-ε4 (n=15); D) ages 40-49: +ε4 (n=15);.E) ages 50-65: non-ε4: F) ages 50-65: +ε4 (n=15). These groups will be matched for mean age, mean years of education, gender distribution, as well as the presence or absence of a family history of AD in a first degree relative.
There will be 2 scanning sessions for each participant. Scan session #1 and Scan session #2 will be acquired within 2 weeks of each other and will take approximately one hour each.
Studietyp
Inskrivning (Förväntat)
Kontakter och platser
Studieorter
-
-
California
-
La Jolla, California, Förenta staterna, 92037
- Shiley-Marcos Alzheimer's Disease Research Center, University of California, San Diego
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Right-handed
Exclusion Criteria:
- Major medical illnesses
- History of significant head trauma with residual cognitive deficits
- Other neurological or major psychiatric disorders such as schizophrenia, bipolar disorder, developmental learning disorder, and alcohol or substance abuse
- MRI contra-indications
Studieplan
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
Intervention / Behandling |
|---|---|
|
1
Individuals with high risk for Alzheimer's disease
|
Blood oxygenation and perfusion functional MRI performed twice, two weeks apart; each scan lasts 1 hour
|
|
2
Individuals with low risk for Alzheimer's disease
|
Blood oxygenation and perfusion functional MRI performed twice, two weeks apart; each scan lasts 1 hour
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
identification of consistent patterns of variance in brain function in subjects at risk for Alzheimer's Disease by using APOE ε4 as a marker for disease risk
Tidsram: single time point
|
single time point
|
Samarbetspartners och utredare
Utredare
- Huvudutredare: Adam Fleisher, MD, University of California, San Diego
Publikationer och användbara länkar
Allmänna publikationer
- Fleisher A, Grundman M, Jack CR Jr, Petersen RC, Taylor C, Kim HT, Schiller DH, Bagwell V, Sencakova D, Weiner MF, DeCarli C, DeKosky ST, van Dyck CH, Thal LJ; Alzheimer's Disease Cooperative Study. Sex, apolipoprotein E epsilon 4 status, and hippocampal volume in mild cognitive impairment. Arch Neurol. 2005 Jun;62(6):953-7. doi: 10.1001/archneur.62.6.953.
- Bookheimer SY, Strojwas MH, Cohen MS, Saunders AM, Pericak-Vance MA, Mazziotta JC, Small GW. Patterns of brain activation in people at risk for Alzheimer's disease. N Engl J Med. 2000 Aug 17;343(7):450-6. doi: 10.1056/NEJM200008173430701.
- Mayeux R, Ottman R, Tang MX, Noboa-Bauza L, Marder K, Gurland B, Stern Y. Genetic susceptibility and head injury as risk factors for Alzheimer's disease among community-dwelling elderly persons and their first-degree relatives. Ann Neurol. 1993 May;33(5):494-501. doi: 10.1002/ana.410330513.
- Fleisher AS, Houston WS, Eyler LT, Frye S, Jenkins C, Thal LJ, Bondi MW. Identification of Alzheimer disease risk by functional magnetic resonance imaging. Arch Neurol. 2005 Dec;62(12):1881-8. doi: 10.1001/archneur.62.12.1881.
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- IA0092
- 5K23AG024062-02 (U.S.S. NIH-anslag/kontrakt)
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