- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT00254306
Functional Brain Imaging in Recreational Users of Ecstasy
Studieöversikt
Status
Betingelser
Detaljerad beskrivning
Recreational use of "ecstasy" (MDMA; 3, 4-Methylenedioxymethamphetamine) is associated with long-lasting effects on metabolism in the human brain. In particular, there is evidence of long-term damage to the brains' neurotransmitter serotonin (5-HT). It is also known that chronic use of Methamphetamine (which is similar in its chemical structure to "ecstasy") is linked to impaired cognitive and motor skills despite recovery of dopamine transporters (DAT). We have investigated whether chronic use of "ecstasy" is causing any impairment in motor skills and function of the dopaminergic system in recreational users of "ecstasy". In our preliminary study, we have scanned control subjects and "ecstasy" users, at baseline and after performing on a motorbike riding computer game while imaging dopamine in vivo with [123I] IBZM (a D2 receptor radiotracer) in Single Photon Emission Computed Tomography (SPECT). We showed:
- Lower measures of D2 at baseline in ecstasy users compared with control subjects, that means lower level of dopaminergic activity in "ecstasy" users.
- Significant displacement of [123I] IBZM by endogenous dopamine released during the game in healthy subjects unlike "ecstasy" users, that means that recreational users of "ecstasy" release much less natural dopamine.
- No difference between the groups in performance (reaction time) on riding the game after a year of recovery.
Our results show preliminary evidence for dopaminergic deficiency in "ecstasy" users, a finding that has not been shown before. However, similar to other drugs of abuse, it is not known whether dopaminergic deficiency is the cause or consequence of the use of "ecstasy". We now propose to proceed to scan more recreational users of "ecstasy" in order to assess whether chronic use of "ecstasy" is associated with deficient dopaminergic neurotransmission in the brain.
Studietyp
Inskrivning (Faktisk)
Kontakter och platser
Studieorter
-
-
-
Jerusalem, Israel, 91120
- Dept. of Nuclear Medicine, Hadassah Hospital, Ein Kerem
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Chronic users of ecstasy, and healthy controls, with no other diseases or drug abuse
Exclusion Criteria:
- Pregnant and breast feeding women
- Aged below 18
- Neurological disorders
- Drug abuse
Studieplan
Hur är studien utformad?
Designdetaljer
- Observationsmodeller: Case-Control
- Tidsperspektiv: Tvärsnitt
Kohorter och interventioner
Grupp / Kohort |
---|
1
ex-"ecstasy" users
|
2
control subjects
|
Samarbetspartners och utredare
Sponsor
Utredare
- Huvudutredare: Yodphat Krausz, MD, Hadassah Medical Organization
- Huvudutredare: Aviv M Weinstein, Ph.D, Hadassah Medical Organization
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
- 050893-HMO-CTIL
- n/q
Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .
Kliniska prövningar på Amfetaminrelaterade sjukdomar
-
University of Southern DenmarkVejle Hospital; Vejle KommuneAvslutadHRQOL (Health Related Quality Of Life)Danmark
-
University of Southern DenmarkNaestved HospitalAvslutadHRQOL (Health Related Quality of Quality)Danmark
-
University of MalayaOkändTranspalatal Arch (TPA) | Oral Health Related Quality of Life (OHRQoL) | Oral Health Impact Profile Short Version 14 (OHIP 14) | Ortodontisk smärta | Tredimensionell (3D) ortodontisk anordningMalaysia
-
University of Nove de JulhoOkänd
-
University of Kansas Medical CenterHar inte rekryterat ännuEsophagogastric Junction Disorder
-
Al-Azhar UniversityAvslutad
-
Assiut UniversityOkändTal Cortex Disorder
-
University Hospital, MontpellierAvslutadEustachian Tube DisorderFrankrike
-
Shanghai Jiao Tong University School of MedicineAvslutadTissue Expander DisorderKina