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Michael H. Bloch

7 papers in the library · 1,203 citations · publishing 2012-2025

Papers

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Effect of Esketamine on Depressive Symptoms in Adolescents With Major Depressive Disorder at Imminent Suicide Risk: A Randomized Psychoactive-Controlled Study.

Journal of the American Academy of Child and Adolescent Psychiatry March 7, 2025 Colette Kosik-Gonzalez, Dong-Jing Fu, Li Nancy Chen et al. 14 citations

To evaluate the efficacy, safety, and tolerability of esketamine nasal spray vs psychoactive placebo (oral midazolam) in rapidly reducing depressive symptoms in adolescents with major depressive disorder at imminent risk for suicide. This double-blind, double-dummy, phase 2b study randomized (1:1:1:2) 147 adolescents (12 to <18 years old) to esketamine (28, 56, or 84 mg) or midazolam twice...

Exploring Predictors of Ketamine Response in Adolescent Treatment-Resistant Depression

Journal of Child and Adolescent Psychopharmacology January 3, 2024 Alice Lineham, Victor J. Avila‐quintero, Michael H. Bloch et al. 15 citations

Objective:Ketamine has proved effective as a rapid-acting antidepressant agent, but treatment is not effective for everyone (approximately a quarter to a half of patients). Some adult studies have begun to investigate predictors of ketamine's antidepressant response, but no studies have examined this in adolescents with depression. Methods:We conducted a secondary data analysis of adolescents...

The Relationship Between Acute Dissociative Effects Induced by Ketamine and Treatment Response in Adolescent Patients with Treatment-Resistant Depression

Journal of Child and Adolescent Psychopharmacology February 1, 2023 Alice Lineham, Victor J. Avila‐quintero, Michael H. Bloch et al. 20 citations

Objective: Ketamine has proven effective as a rapid-acting antidepressant agent. Several adult studies have investigated the association between ketamine's acute dissociative effects and depression response, but no studies have examined the association in adolescents with treatment-resistant depression (TRD). Methods: We conducted a secondary data analysis of 16 adolescent participants who...

Efficacy of Intravenous Ketamine in Adolescent Treatment-Resistant Depression: A Randomized Midazolam-Controlled Trial

FOCUS The Journal of Lifelong Learning in Psychiatry April 1, 2022 Jennifer B. Dwyer, Angeli Landeros‐Weisenberger, Jessica A. Johnson et al. 51 citations

Objective: Adolescent depression is prevalent and is associated with significant morbidity and mortality. Although intravenous ketamine has shown efficacy in adult treatment-resistant depression, its efficacy in pediatric populations is unknown. The authors conducted an active-placebo-controlled study of ketamine's safety and efficacy in adolescents. Methods: In this proof-of-concept...

Efficacy of Intravenous Ketamine in Adolescent Treatment-Resistant Depression: A Randomized Midazolam-Controlled Trial.

American Journal of Psychiatry March 3, 2021 J. Dwyer, Angeli Landeros‐Weisenberger, Jessica A. Johnson et al. 163 citations

OBJECTIVE Adolescent depression is prevalent and is associated with significant morbidity and mortality. Although intravenous ketamine has shown efficacy in adult treatment-resistant depression, its efficacy in pediatric populations is unknown. The authors conducted an active-placebo-controlled study of ketamine's safety and efficacy in adolescents. METHODS In this proof-of-concept randomized,...

The effect of a single dose of intravenous ketamine on suicidal ideation: a systematic review and individual participant data meta-analysis

American Journal of Psychiatry October 3, 2017 S. Wilkinson, Elizabeth D. Ballard, Michael H. Bloch et al. 680 citations

Objective Suicide is a public health crisis with limited treatment options. We conducted a systematic review and individual participant data meta-analysis examining the effects of a single dose of ketamine on suicidal ideation. Method Individual participant data were obtained from 10 of 11 identified comparison intervention studies (using either saline or midazolam as control). The analysis...

NMDA receptor function in large-scale anticorrelated neural systems with implications for cognition and schizophrenia

Proceedings of the National Academy of Sciences September 25, 2012 Alan Anticevic, Mark G. Gancsos, John D. Murray et al. 260 citations

Glutamatergic neurotransmission mediated by N-methyl-d-aspartate (NMDA) receptors is vital for the cortical computations underlying cognition and might be disrupted in severe neuropsychiatric illnesses such as schizophrenia. Studies on this topic have been limited to processes in local circuits; however, cognition involves large-scale brain systems with multiple interacting regions. A prominent...