Randomized, double-blind trial of olanzapine versus placebo in patients prodromally symptomatic for psychosis

…, R E. Hoffman, A Preda, I Epstein… - American Journal of …, 2006 - Am Psychiatric Assoc
Objective: This study assessed the efficacy of olanzapine in delaying or preventing
conversion to psychosis and reducing symptoms in people with prodromal symptoms of …

A randomized controlled trial of cognitive behavioral therapy for individuals at clinical high risk of psychosis

J Addington, I Epstein, L Liu, P French, KM Boydell… - Schizophrenia …, 2011 - Elsevier
BACKGROUND: There has been increasing interest in early detection during the prodromal
phase of a psychotic disorder. To date a few treatment studies have been published with …

Intolerance of uncertainty, social anxiety, and generalized anxiety: Differences by diagnosis and symptoms

…, L Anand, A Canzonieri, A Fine, K Fotinos, I Epstein… - Psychiatry …, 2017 - Elsevier
Research suggests that Intolerance of Uncertainty (IU) is related to the severity of suffering
in Generalized Anxiety Disorder (GAD). However, its role in Social Anxiety Disorder (SAD) …

Quetiapine: an effective antipsychotic in first-episode schizophrenia despite only transiently high dopamine-2 receptor blockade

…, G Papatheodorou, I Epstein… - Journal of Clinical …, 2002 - psychiatrist.com
Background: It has been suggested that transiently high dopamine-2 (D2) receptor occupancy
by antipsychotic medication may be sufficient for inducing an antipsychotic response. We …

The international study on general practitioners and early psychosis (IGPS)

…, L Tait, E Stip, P Roy, G Conrad, J Hunt, I Epstein… - Schizophrenia …, 2009 - Elsevier
BACKGROUND: In much of the world, general practitioners (GPs) are the health professionals
most frequently initially contacted when a young person is developing psychosis. …

Early detection of psychosis: finding those at clinical high risk

J Addington, I Epstein, A Reynolds… - Early Intervention in …, 2008 - Wiley Online Library
Aim: In early detection work, recruiting individuals who meet the prodromal criteria is difficult.
The aim of this paper was to describe the development of a research clinic for individuals …

Low hedonic tone and attention-deficit hyperactivity disorder: risk factors for treatment resistance in depressed adults

T Sternat, K Fotinos, A Fine, I Epstein… - … disease and treatment, 2018 - Taylor & Francis
Background The burdens imposed by treatment-resistant depression (TRD) necessitate the
identification of predictive factors that may improve patient treatment and outcomes. Because …

Treating young individuals at clinical high risk for psychosis

C Marshall, J Addington, I Epstein, L Liu… - Early Intervention in …, 2012 - Wiley Online Library
Background: Typically, studies investigating those at clinical high risk for psychosis have
focused on predictors of conversion and treatments that might prevent conversion to full‐blown …

Pharmacological approaches to manage persistent symptoms of major depressive disorder: rationale and therapeutic strategies

I Epstein, I Szpindel, MA Katzman - Psychiatry research, 2014 - Elsevier
Major depressive disorder (MDD) is a highly prevalent chronic psychiatric illness associated
with significant morbidity, mortality, loss of productivity, and diminished quality of life. …

Treatment Response to Olanzapine and Haloperidol and its Association with Dopamine D2 Receptor Occupancy in First-Episode Psychosis

…, Z Daskalakis, I Epstein… - The Canadian …, 2005 - journals.sagepub.com
Objective: Response to typical antipsychotic medication has been associated with achieving
a level of striatal dopamine D 2 receptor occupancy in the range of 65% to 70%. We …