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Roger S McIntyre

University of Toronto, University Health Network

131 papers in the library · 4,810 citations · publishing 0-2026

Papers

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Oral Ketamine for Depression

The Journal of Clinical Psychiatry April 15, 2019 Joshua D. Rosenblat, André F. Carvalho, Madeline Li et al. 111 citations

OBJECTIVE: Intravenous (IV) ketamine has rapid and robust antidepressant effects; however, poor accessibility of the IV route often limits its use. Numerous alternative routes of administration are being investigated. Oral ketamine is particularly appealing for its ease of use with the potential for high accessibility. The objective of the current systematic review, in accordance with PRISMA,...

Predictors of Response to Ketamine in Treatment Resistant Major Depressive Disorder and Bipolar Disorder

International Journal of Environmental Research and Public Health April 17, 2018 Carola Rong, Caroline Park, Joshua D. Rosenblat et al. 116 citations

OBJECTIVES: Extant evidence indicates that ketamine exerts rapid antidepressant effects in treatment-resistant depressive (TRD) symptoms as a part of major depressive disorder (MDD) and bipolar disorder (BD). The identification of depressed sub-populations that are more likely to benefit from ketamine treatment remains a priority. In keeping with this view, the present narrative review aims to...

Strategies to mitigate dissociative and psychotomimetic effects of ketamine in the treatment of major depressive episodes: a narrative review

The World Journal of Biological Psychiatry January 11, 2016 Matthew N. Cooper, Joshua D. Rosenblat, Danielle S. Cha et al. 40 citations

Objectives Replicated evidence has demonstrated that ketamine exerts rapid-acting and potent antidepressant effects. Notwithstanding, its promise to mitigate depressive symptoms and suicidality in antidepressant-resistant populations, several limitations and safety concerns accompany ketamine including, but not limited to, the potential for abuse and psychotomimetic/dissociative experiences....

A New Perspective on the Anti-Suicide Effects With Ketamine Treatment

Journal of Clinical Psychopharmacology December 12, 2015 Yena Lee, Kahlood Syeda, Nadia A. Maruschak et al. 75 citations

Available evidence indicates that a single, low-dose administration of ketamine is a robust, rapid-onset intervention capable of mitigating depressive symptoms in adults with treatment-resistant mood disorders. Additional evidence also suggests that ketamine may offer antisuicide effects. Herein, we propose that the antidepressant effects reported with ketamine administration are mediated, in...

Prevention and reversal of ketamine-induced schizophrenia related behavior by minocycline in mice: Possible involvement of antioxidant and nitrergic pathways

Journal of Psychopharmacology September 17, 2013 Aline Santos Monte, Greicy Coelho de Souza, Roger S McIntyre et al. 123 citations

It has been hypothesized that oxidative imbalance and alterations in nitrergic signaling play a role in the neurobiology of schizophrenia. Preliminary evidence suggests that adjunctive minocycline treatment is efficacious for cognitive and negative symptoms of schizophrenia. This study investigated the effects of minocycline in the prevention and reversal of ketamine-induced schizophrenia-like...

A Critical Appraisal of Evidence on the Efficacy and Safety of Serotonergic Psychedelic Drugs as Emerging Antidepressants: Mind the Evidence Gap.

Journal of Clinical Psychopharmacology Nicole Ledwos, Joshua D. Rosenblat, Daniel M. Blumberger et al. 16 citations

There has been resurgence of interest in the therapeutic use of serotonergic ("classic") psychedelics in major depressive disorder (MDD) and end-of-life distress. This commentary offers a critical appraisal of current evidence for antidepressant effects of classic psychedelics from contemporary clinical trials and highlights pitfalls that should be addressed before clinical translation. A...