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Spotlight: Efficacy of Intravenous Racemic Ketamine on Global Severity and Individual Symptoms of Depression: An Exploratory Retrospective Analysis (Landrum, et al, 2025)

" Maintenance intravenous racemic ketamine therapy demonstrated significant, persistent, and broad efficacy for treatment-resistant depression ...Side effect burden was no greater in higher doses as compared with lower. "
Michael DeMarco, PhD

by Michael DeMarco, PhD

Efficacy of Intravenous Racemic Ketamine on Global Severity and Individual Symptoms of Depression: An Exploratory Retrospective Analysis - PubMed
Maintenance intravenous racemic ketamine therapy demonstrated significant, persistent, and broad efficacy for treatment-resistant depression as demonstrated by reductions in Montgomery-Åsberg Depression Rating Scale and Patient-Health Questionnaire-9 total scores and equivocal changes in every item …
PubMedRachel E Landrum

(2025) "The magnitude of change in individual items was similar to that of previous randomized trials, with suicidal ideation and depression demonstrating the largest response and appetite disturbance the least."

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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

Spotlight: Modulation of functional network co-activation pattern dynamics following ketamine treatment in major depression (Taraku, et al, 2025)

"findings suggest ketamine modulates brain network dynamics which may normalize dynamic patterns seen in TRD at baseline toward patterns seen in controls. Changes in Salience Network state dynamics may correspond to improvements in ruminative symptoms following ketamine therapy."
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