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Spotlight: Comparative Effects of Repeated Ketamine Infusion Versus Intranasal Esketamine in Patients With Treatment-Resistant Depression: A Retrospective Chart Review (Meisner, et al, 2025)

"In this naturalistic sample of patients with similarly severe TRD treated in a ketamine subspecialty service over a 4–5-week induction period, treatment with IV racemic ketamine was associated with a more rapid response and greater overall efficacy than treatment with IN esketamine."
Michael DeMarco, PhD

by Michael DeMarco, PhD

(2025): "In this naturalistic sample of patients with similarly severe TRD treated in a ketamine subspecialty service over a 4–5-week induction period, treatment with IV racemic ketamine was associated with a more rapid response and greater overall efficacy than treatment with IN esketamine."In this naturalistic sample of patients with similarly severe TRD treated in a ketamine subspecialty service over a 4–5-week induction period, treatment with IV racemic ketamine was associated with a more rapid response and greater overall efficacy than treatment with IN esketamine."

More like this

The Role of Psychedelics in the Treatment of Substance Use Disorders: An Overview of Systematic Reviews (Correa de Costa, et al, 2025)

"...evidence suggests that the use of serotonergic and non-serotonergic psychedelics (ketamine) for the treatment of SUD may provide advantages over traditional therapeutics, and these compounds may eventually become part of the next generation of treatments for SUD under specific circumstances."

Spotlight: A long, strange trip: Ketamine treatment in psychiatry (Nutt, et al, 2025)

"...mystical experiences were strongly related to immediate and sustained psychiatric benefits at the group level and on an individual, session-by-session basis across the six doses, providing mechanistic support for ketamine-psychotherapy pairings."

Spotlight: Rapid-acting NMDA and GABAergic Modulators in Mood Disorders: From Synaptic Mechanisms to Clinical Practice (Serretti, 2025)

"Depression is increasingly conceptualized as a disorder of impaired synaptic plasticity and excitation-inhibition imbalance within corticolimbic circuits. Ketamine, brexanolone, zuranolone, offer complementary approaches to restore circuit function."

Spotlight: Personality profiles and trauma history in ketamine therapy for mood and anxiety disorders: A latent profile analysis of short-term outcomes (Gregoire, et al, 2025)

"Personality traits relate to baseline mental health severity but not short-term response to ketamine. Trauma history may predict greater benefit from treatment."

Spotlight: Changing your mind: neuroplastic mechanisms underlying the therapeutic effect of psychedelics in depression, PTSD, and addiction (Palhas, et al, 2025)

"Serotonergic psychedelics & ketamine appear to share common cellular mechanisms. They both recruit glutamatergic neurons to stimulate BDNF-trKB signaling, promoting synaptogenesis via the mTOR pathway. These changes may explain their efficacy in depression, anxiety, PTSD, & addiction."

How does ketamine affect psychotherapy?

Studies suggest that human support is a factor in ketamine psychedelic therapy
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