PMID- 35788817 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220716 IS - 2194-7511 (Print) IS - 2194-7511 (Electronic) IS - 2194-7511 (Linking) VI - 10 IP - 1 DP - 2022 Jul 5 TI - Psychedelics in the treatment of unipolar and bipolar depression. PG - 18 LID - 10.1186/s40345-022-00265-5 [doi] LID - 18 AB - This is a narrative review about the role of classic and two atypical psychedelics in the treatment of unipolar and bipolar depression. Since the 1990s, psychedelics experience a renaissance in biomedical research. The so-called classic psychedelics include lysergic acid diethylamide (LSD), psilocybin, mescaline and ayahuasca. Characteristic effects like alterations in sensory perception, as well as emotion- and self-processing are induced by stimulation of serotonin 2A receptors in cortical areas. The new paradigm of psychedelic-assisted psychotherapy suggests a therapeutic framework in which a safely conducted psychedelic experience is integrated into a continuous psychotherapeutic process. First randomized, controlled trials with psilocybin show promising efficacy, tolerability, and adherence in the treatment of unipolar depression. On the other hand, classic psychedelics seem to be associated with the induction of mania, which is an important issue to consider for the design of research and clinical protocols. So called atypical psychedelics are a heterogeneous group with overlapping subjective effects but different neurobiological mechanisms. Two examples of therapeutic value in psychiatry are 3,4-methyl​enedioxy​methamphetamine (MDMA) and ketamine. Since 2020 the ketamine enantiomer esketamine has been granted international approval for treatment-resistant unipolar depression, and also first evidence exists for the therapeutic efficacy of ketamine in bipolar depression. Whether psychedelics will fulfil current expectations and find their way into broader clinical use will depend on future rigorous clinical trials with larger sample sizes. A well-considered therapeutic and legal framework will be crucial for these substances to create new treatment settings and a potential paradigm shift. CI - (c) 2022. The Author(s). FAU - Bosch, Oliver G AU - Bosch OG AD - Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, Lenggstrasse 31, PO Box 1931, 8032, Zurich, Switzerland. oliver.bosch@bli.uzh.ch. FAU - Halm, Simon AU - Halm S AD - Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, Lenggstrasse 31, PO Box 1931, 8032, Zurich, Switzerland. FAU - Seifritz, Erich AU - Seifritz E AD - Department of Psychiatry, Psychotherapy and Psychosomatics, Psychiatric University Hospital Zurich, University of Zurich, Lenggstrasse 31, PO Box 1931, 8032, Zurich, Switzerland. LA - eng PT - Journal Article PT - Review DEP - 20220705 PL - Germany TA - Int J Bipolar Disord JT - International journal of bipolar disorders JID - 101622983 PMC - PMC9256889 COIS- Dr. Bosch has received honoraria as a lecturer from Janssen-Cilag. He declares no further conflict of interest. Dr. Halm declares no conflict of interest. Prof. Dr. Seifritz has received honoraria as a lecturer from Janssen-Cilag. He declares no further conflict of interest. Janssen-Cilag is manufacturing and marketing the esketamine nasal spray Spravato for the treatment of therapy-resistant depression. Dr. Bosch has received honoraria as a lecturer from Janssen-Cilag. He declares no further conflict of interest. Dr. Halm declares no conflict of interest. Prof. Dr. Seifritz has received honoraria as a lecturer from Janssen-Cilag. He declares no further conflict of interest. EDAT- 2022/07/06 06:00 MHDA- 2022/07/06 06:01 PMCR- 2022/07/05 CRDT- 2022/07/05 18:48 PHST- 2021/12/23 00:00 [received] PHST- 2022/06/09 00:00 [accepted] PHST- 2022/07/05 18:48 [entrez] PHST- 2022/07/06 06:00 [pubmed] PHST- 2022/07/06 06:01 [medline] PHST- 2022/07/05 00:00 [pmc-release] AID - 10.1186/s40345-022-00265-5 [pii] AID - 265 [pii] AID - 10.1186/s40345-022-00265-5 [doi] PST - epublish SO - Int J Bipolar Disord. 2022 Jul 5;10(1):18. doi: 10.1186/s40345-022-00265-5.