OPEN Foundation

Day: 24 November 2020

Psychedelics as an emerging novel intervention in the treatment of substance use disorder: a review

Abstract

Classical psychedelics are a group of drugs characterized by their activation of the serotonin-2A (5-hydroxytryptamine-2A; 5-HT2A) receptor and the unique hallucinogenic and mystical-type experiences that result. After a substantial period of restrictions limiting investigations into the therapeutic potential of psychedelics, a relatively recent recommencement of interest has sparked the burgeoning possibility for these drugs to play a part in the treatment of a wide array of psychopathologies. One of the most promising is in the study of addiction. Evidence has emerged that psychedelic agents may provide a novel avenue for the clinical treatment of patients dealing with substance use disorders (SUD). These serotonergic hallucinogens have displayed remarkable and enduring positive outcomes in this area, even when administered as one or two doses. The neural targets for these psychedelics are varied and underlie a complex mechanism of action-modulating multiple neural networks. It is believed that these agents allow for the reorganization of disordered neural pathways in the default mode network and attenuate maladaptive signaling in mesolimbic reward circuitry. The aim of this review is to examine the current standing of evidence regarding psychedelic psychopharmacology and to provide an overview of the use and effectiveness of these drugs in the treatment of SUD, alcohol use disorder, and for smoking cessation.

DiVito, A. J., & Leger, R. F. (2020). Psychedelics as an emerging novel intervention in the treatment of substance use disorder: a review. Molecular biology reports, 47(12), 9791–9799. https://doi.org/10.1007/s11033-020-06009-x

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MDMA-assisted psychotherapy for treatment of anxiety and other psychological distress related to life-threatening illnesses: a randomized pilot study

Abstract

The success of modern medicine creates a growing population of those suffering from life-threatening illnesses (LTI) who often experience anxiety, depression, and existential distress. We present a novel approach; investigating MDMA-assisted psychotherapy for the treatment of anxiety in people with an LTI. Participants with anxiety from an LTI were randomized in a double-blind study to receive MDMA (125 mg, n = 13) or placebo (n = 5) in combination with two 8-h psychotherapy sessions. The primary outcome was change in State-Trait Anxiety Inventory (STAI) Trait scores from baseline to one month post the second experimental session. After unblinding, participants in the MDMA group had one open-label MDMA session and placebo participants crossed over to receive three open-label MDMA sessions. Additional follow-up assessments occurred six and twelve months after a participant’s last experimental session. At the primary endpoint, the MDMA group had a greater mean (SD) reduction in STAI-Trait scores, – 23.5 (13.2), indicating less anxiety, compared to placebo group, – 8.8 (14.7); results did not reach a significant group difference (p = .056). Hedges’ g between-group effect size was 1.03 (95% CI: – 5.25, 7.31). Overall, MDMA was well-tolerated in this sample. These preliminary findings can inform development of larger clinical trials to further examine MDMA-assisted psychotherapy as a novel approach to treat individuals with LTI-related anxiety.Trial Registration: clinicaltrials.gov Identifier: NCT02427568, first registered April 28, 2015.

Wolfson, P. E., Andries, J., Feduccia, A. A., Jerome, L., Wang, J. B., Williams, E., Carlin, S. C., Sola, E., Hamilton, S., Yazar-Klosinski, B., Emerson, A., Mithoefer, M. C., & Doblin, R. (2020). MDMA-assisted psychotherapy for treatment of anxiety and other psychological distress related to life-threatening illnesses: a randomized pilot study. Scientific reports, 10(1), 20442. https://doi.org/10.1038/s41598-020-75706-1

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7 May - Psychedelics, Nature & Mental Health with Sam Gandy

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