PMID- 33995104 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210518 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 12 DP - 2021 TI - REL-1017 (Esmethadone) Increases Circulating BDNF Levels in Healthy Subjects of a Phase 1 Clinical Study. PG - 671859 LID - 10.3389/fphar.2021.671859 [doi] LID - 671859 AB - Brain-derived neurotrophic factor (BDNF), a neurotrophin widely expressed in the central nervous system, exhibits important effects on neural plasticity. BDNF has been implicated in the mechanism of action of ketamine, a N-methyl-d-aspartic acid receptor (NMDAR) antagonist with rapid anti-depressant effects in humans. REL-1017 (esmethadone), the d-optical isomer of the racemic mixture d-l-methadone, is devoid of clinically relevant opioid activity at doses expected to exert therapeutic NMDAR antagonistic activity in humans. The present study was conducted to ascertain the effects of oral administration of 25 mg of REL-1017 for 10 days on plasma BDNF in healthy subjects confined to an inpatient unit for a phase 1 clinical trial. We observed an increase in post-treatment BDNF plasma levels compared to pre-treatment levels. Post-treatment, Day 10 BDNF plasma levels ranged from 2 to 17 times pre-treatment levels in the 25 mg REL-1017 treatment group, whereas in the placebo group, BDNF plasma levels remained unchanged (p = 0.028). Diastolic blood pressure decreased significantly in subjects treated with REL-1017, while no effect could be observed in the placebo group. In conclusion, the administration of 25 mg REL-1017 significantly increased BDNF plasma levels and significantly decreased diastolic blood pressure in healthy subjects confined to an inpatient unit for a phase 1 clinical trial. CI - Copyright (c) 2021 De Martin, Gabbia, Folli, Bifari, Fiorina, Ferri, Stahl, Inturrisi, Pappagallo, Traversa and Manfredi. FAU - De Martin, Sara AU - De Martin S AD - Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy. FAU - Gabbia, Daniela AU - Gabbia D AD - Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy. FAU - Folli, Franco AU - Folli F AD - Department of Health Science, University of Milan, Milan, Italy. FAU - Bifari, Francesco AU - Bifari F AD - Department of Medical Biotechnology and Translational Medicine, University of Milan, Milan, Italy. FAU - Fiorina, Paolo AU - Fiorina P AD - Nephrology Division, Boston Children's Hospital and Harvard Medical School, Boston, MA, United States. FAU - Ferri, Nicola AU - Ferri N AD - Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy. FAU - Stahl, Stephen AU - Stahl S AD - Department of Psychiatry, University of California, San Diego School of Medicine, La Jolla, CA, United States. AD - Neuroscience Education Institute, San Diego, CA, United States. FAU - Inturrisi, Charles E AU - Inturrisi CE AD - Relmada Therapeutics, Inc., New York, NY, United States. FAU - Pappagallo, Marco AU - Pappagallo M AD - Relmada Therapeutics, Inc., New York, NY, United States. FAU - Traversa, Sergio AU - Traversa S AD - Relmada Therapeutics, Inc., New York, NY, United States. FAU - Manfredi, Paolo L AU - Manfredi PL AD - Relmada Therapeutics, Inc., New York, NY, United States. LA - eng PT - Journal Article DEP - 20210428 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 PMC - PMC8113752 OTO - NOTNLM OT - BDNF OT - NMDAR OT - clinical trial OT - depression OT - esmethadone COIS- SDM: Ongoing research projects sponsored by Relmada Therapeutics. NF: Relationship with Bristol-Mayers, Daiichi-Sankyo, Pharmanutra, and Amryt Pharma. SS: Consultant for Acadia, Alkermes, Allergan, AbbVie, Arbor Pharmaceuticals, Axovant, Axsome, Celgene, Concert, Clearview, EMD Serono, Eisai Pharmaceuticals, Ferring, Impel NeuroPharma, Intra-Cellular Therapies, Ironshore Pharmaceuticals, Janssen, Karuna, Lilly, Lundbeck, Merck, Otsuka, Pfizer, Relmada, Sage Therapeutics, Servier, Shire, Sunovion, Takeda, Taliaz, Teva, Tonix, Tris Pharma, and Viforpharma. Board Member: GenoMind; Served on Speakers bureaus for: Acadia, Lundbeck, Otsuka, Perrigo, Servier, Sunovion, Takeda, Teva, and Vertex; Research and/or grand support from: Acadia, Avanir, Braeburn Pharmaceuticals, Eli Lilly, Intra-Cellular Therapies, Ironshore, ISSWSH, Neurocrine, Otsuka, Shire, Sunovion, and TMS NeuroHealth Centers. CI: Consultant for and owns stock in Relmada Therapeutics. MP: Consultant for Relmada Therapeutics. ST: CEO of Relmada Therapeutics and significant stock ownership. PM: Paid consultant of Relmada Therapeutics, owns stock of Relmada and may earn Royalties from IP licensed to Relmada. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/05/18 06:00 MHDA- 2021/05/18 06:01 PMCR- 2021/04/28 CRDT- 2021/05/17 06:03 PHST- 2021/02/24 00:00 [received] PHST- 2021/04/13 00:00 [accepted] PHST- 2021/05/17 06:03 [entrez] PHST- 2021/05/18 06:00 [pubmed] PHST- 2021/05/18 06:01 [medline] PHST- 2021/04/28 00:00 [pmc-release] AID - 671859 [pii] AID - 10.3389/fphar.2021.671859 [doi] PST - epublish SO - Front Pharmacol. 2021 Apr 28;12:671859. doi: 10.3389/fphar.2021.671859. eCollection 2021.