Abstract
RATIONALE: A deficit in dopamine-1 (D1) receptor function in the prefrontal cortex is suggested to play a role in the cognitive dysfunction observed in patients with schizophrenia. However, the results from positron emission tomography imaging studies of D1 receptor levels in individuals with schizophrenia are mixed.
OBJECTIVES: The aim of this investigation was to determine whether the in vivo characteristics of the different D1 receptor tracers used in previous reports, [(11)C]SCH23390 and [(11)C]NNC112, may have contributed to these discrepancies reported in the literature.
METHODS: Eight patients with schizophrenia and 12 healthy control subjects were scanned with both [(11)C]SCH23390 and [(11)C]NNC112.
RESULTS: [(11)C]SCH23390 and [(11)C]NNC112 binding potentials in both patients and control subjects were compared and no tracer by diagnosis interactions were observed.
CONCLUSIONS: The results of this study suggest that differences in the binding of [(11)C]SCH23390 and [(11)C]NNC112 observed in previous studies are not due to differences in the in vivo behavior of these tracers.
| Original language | English |
|---|---|
| Pages (from-to) | 167-74 |
| Number of pages | 8 |
| Journal | Psychopharmacology |
| Volume | 228 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jul 2013 |
| Externally published | Yes |