Rapid-acting antidepressants
Commenting on the study in an interview, Roger McIntyre, MD, professor of psychiatry and pharmacology, University of Toronto, and head of the Mood Disorders Psychopharmacology Unit at Toronto Western Hospital, noted that the research into nitrous oxide is “part of an interest in rapid-acting antidepressants.”
Dr. McIntyre, also the chairman and executive director of the Brain and Cognition Discovery Foundation, Toronto, who was not involved with the study, found it “interesting” that “almost 20% of the sample had previously had suboptimal outcomes to ketamine and/or neurostimulation, meaning these patients had serious refractory illness, but the benefit [of nitrous oxide] was sustained at 2 weeks.”
Studies of the use of nitrous oxide for patients with bipolar depression “would be warranted, since it appears generally safe and well tolerated,” said Dr. McIntyre, director of the Depression and Bipolar Support Alliance.
The study was sponsored by an award to Dr. Nagele from the NARSAD Independent Investigator Award from the Brain and Behavior Research Foundation and an award to Dr. Nagele and other coauthors from the Taylor Family Institute for Innovative Psychiatric Research at Washington University in St. Louis. Dr. Nagele receives funding from the National Institute of Mental Health the American Foundation for Prevention of Suicide, and the Brain and Behavior Research Foundation; has received research funding and honoraria from Roche Diagnostics and Abbott Diagnostics; and has previously filed for intellectual property protection related to the use of nitrous oxide in major depression. The other authors’ disclosures are listed on the original article. Dr. McIntyre has received research grant support from CIHR/GACD/Chinese National Natural Research Foundation; speaker/consultation fees from Lundbeck, Janssen, Purdue, Pfizer, Otsuka, Allergan, Takeda, Neurocrine, Sunovion, Eisai, Minerva, Intra-Cellular, and Abbvie. Dr. McIntyre is also CEO of AltMed.
A version of this article first appeared on Medscape.com.