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Seventeen patients with major affective disorder completed a 10-week, placebo-controlled, randomized trial of the serotonin reuptake inhibitor sertraline. Patients underwent positron emission tomography with 18F-deoxyglucose and were assessed with the Hamilton Depression Rating Scale at baseline and 10 weeks after treatment with sertraline or placebo. The(More)
The amphetamine challenge, in which positron emission tomography (PET) or single photon emission computed tomography radioligand binding following administration of amphetamine is compared to baseline values, has been successfully used in a number of brain imaging studies as an indicator of dopaminergic function, particularly in the striatum. [(18)F](More)
Positron emission tomography (PET) and the high affinity D(2/3) radiotracer [(18)F]fallypride allow the assessment of D(2/3) receptor occupancy of antipsychotic drugs in striatal and extrastriatal brain regions. We measured regional occupancy attained across a range of clinical dosing by the partial D(2) agonist aripiprazole using these methods.(More)
Eighty-seven patients with a DSM-III diagnosis of obsessive-compulsive disorder (OCD) without depression were entered into a double-blind, placebo-controlled study of the efficacy of sertraline, a new serotonin uptake inhibitor. After a 1-week washout period, patients were randomly assigned to receive either placebo or sertraline. After a 2-week titration(More)
IMPORTANCE Multiple lines of evidence suggest a deficit in dopamine release in the prefrontal cortex (PFC) in schizophrenia. Despite the prevalence of the concept of prefrontal cortical hypodopaminergia in schizophrenia, in vivo imaging of dopamine release in the PFC has not been possible until now, when the validity of using the positron emission(More)
Repeated treatment with the psychostimulant amphetamine produces behavioral sensitization that may represent the neural adaptations underlying some features of psychosis and addiction in humans. In the present study we investigated the role of adenosine A(2A) receptors in psychostimulant-induced locomotor sensitization using an A(2A) receptor knockout(More)
OBJECTIVE To investigate the long-term efficacy, prevention of relapse and safety of sertraline in the treatment of panic disorder. METHOD This study consisted of 52 weeks of open-label sertraline treatment (n=398) followed by a 28 weeks of a double-blind, placebo-controlled discontinuation trial (n=183). RESULTS Ninety-three patients were randomized to(More)
OBJECTIVE Obsessive-compulsive disorder (OCD) typically begins early in life and has a chronic course. Despite the need for long-term treatment, the authors found no placebo-controlled studies that have examined the relapse-prevention efficacy of maintenance therapy. METHOD Patients who met criteria for response after 16 and 52 weeks of a single-blind(More)
The present study investigated the tolerability, safety profile, and anti-obsessional efficacy of sertraline, a selective serotonin reuptake inhibitor, during long-term treatment of patients with obsessive-compulsive disorder (OCD). Fifty-nine OCD patients who had completed a 1 year double-blind, fixed dose study comparing sertraline and placebo(More)