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Endocannabinoids, Cannabinoids and Psychiatry: Biological Mechanisms—3rd Edition

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Pathology, Diagnostics, and Therapeutics".

Deadline for manuscript submissions: closed (20 January 2026) | Viewed by 2009

Special Issue Editors


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Guest Editor
Department of Psychology, The Gonda Brain Research Center, Bar Ilan University, Ramat Gan 5290002, Israel
Interests: endocannabinoids; biological psychiatry; epigenetics; developmental psychobiology; behavioral neuroscience; psychoneuroendocrinology; animal models of obesity; binge eating; depression; infant–mother attachment; emotion-regulation
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Guest Editor
Biomedical Sciences Department, University of California, Riverside, CA, USA
Interests: systems neuroscience; integrative physiology; endocannabinoids and the Gut-Brain Axis

Special Issue Information

Dear Colleagues,

This Special Issue is the continuation of our previous special issue “Endocannabinoids, Cannabinoids and Psychiatry: Biological Mechanisms 2.0”.

During the past decade, scientific knowledge on the role and contributions of endocannabinoids and cannabinoids to the optimal functioning of the human brain has advanced considerably. Currently, the endocannabinoid system is regarded, based on recent scientific findings, as a modulatory system of brain connectivity and top-down bottom-up structural pathways’ protection against extreme inhibitory or extreme excitatory cortical and sub-cortical conditions. Such extreme conditions have been suggested to underlie psychopathology. Additionally, the stabilizing effect of cannabinoids in cases of mood disorders, anxiety, depression and schizophrenia, social phobia, personality disorders, bipolar disorders, and post-traumatic stress disorder has been shown in recent years by various researchers including those using animal models. Research on the role of endocannabinoids in the development of psychiatric disorders, their course and remission has also recently advanced. The field of clinical trials on cannabinoid treatment in psychiatry is just emerging. This timely issue will be among the first to publish novel data on endocannabinoids and cannabinoids in various psychiatric disorders. This is a call for papers on underlying biological, including molecular and neural, mechanisms of endocannabinoid and cannabinoid functions in psychiatric disorders based on animal models, in vitro and ex vivo, models and human clinical trials. Data on age and gender, as well as early development and life span, considerations of endocannabinoids and cannabinoids in psychiatric disorders are also encouraged. Epigenetic and genetic vulnerabilities interacting with the environmental impact related to the endocannabinoid system in psychopathology are also welcome. In this context, magnetic resonance and other imaging studies and studies on crosstalk with other neurotransmitter systems are among the top interests of this issue. The vulnerability of the endocannabinoid system under stressful conditions will also be a focus of this issue, including interactions of this system with stress exposure. Risk factors for the development of psychiatric disorders related to the endocannabinoid system and identified within the fields of brain research, epigenetic, genetic, and molecular research are important components to be included in this issue. Cutting-edge reviews are also invited. We note that non-randomized clinical research and survey studies are not suitable for IJMS.

Prof. Aron Weller
Prof. Dr. Nicholas V. DiPatrizio
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. International Journal of Molecular Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • endocannabinoids
  • cannabinoids
  • psychiatry
  • neural mechanisms
  • molecular mechanisms
  • epigenetics
  • imaging
  • psychopathology
  • stress

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Published Papers (2 papers)

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Research

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23 pages, 3113 KB  
Article
Differential Effects of Oleoyl Serine and HU-910 on Anxiety-like and Depression-like Behaviors in Male and Female WKY Rats
by Jenna Gellman, Natalia Zemliana, Yoni Loterstein, Elin Kachuki Dory, Devorah Matas, Gal Shoval, Eyal Sharon, Igor Koman, Gil Zalsman, Lee Koren, Aron Weller and Natalya M. Kogan
Int. J. Mol. Sci. 2026, 27(7), 3177; https://doi.org/10.3390/ijms27073177 - 31 Mar 2026
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Abstract
The role of the endocannabinoid system (ECS) in the development of depression and anxiety is being actively studied, with evidence suggesting that elevation of ECS signaling can have anxiolytic and antidepressant properties. The current study explored the therapeutic potential of Oleoyl Serine (OS), [...] Read more.
The role of the endocannabinoid system (ECS) in the development of depression and anxiety is being actively studied, with evidence suggesting that elevation of ECS signaling can have anxiolytic and antidepressant properties. The current study explored the therapeutic potential of Oleoyl Serine (OS), an endocannabinoid-like lipid, and HU-910, a synthetic selective Cannabinoid type 2 (CB2) receptors agonist, in depression and anxiety, using both sexes of the depressive-like genetic model: Wistar Kyoto (WKY) rats. The aim was to investigate behavioral and molecular mechanisms associated with acute and sub-chronic intraperitoneal administration of these compounds. We showed that, in females, acutely administered OS yielded antidepressant-like and anxiolytic-like effects in the Forced Swim Test (FST) and Open Field Test (OFT), respectively. In males, OS yielded acute and sub-chronic anxiolytic-like effects. HU-910 yielded an acute anxiolytic-like effect in females and an acute antidepressant-like effect in males. Sub-chronic administration of imipramine (IMI), used as a positive control, yielded an antidepressant-like effect in both sexes but an anxiogenic-like effect in females. Sub-chronic administration of all the treatments increased hippocampal Cannabinoid Receptor 1 (CNR1) mRNA expression (but not Fatty Acid Amide Hydrolase (FAAH)) in males. Exploratory in silico absorption, distribution, metabolism, and excretion (ADME) profiling suggests that sex-dependent pharmacokinetic variability may partly underlie the observed behavioral differences, in addition to possible pharmacodynamic factors. Our study provides a lead towards unraveling the putative sex differences in response to both conventional antidepressants (e.g., IMI) and emerging pharmacological agents (e.g., OS, HU-910). Further, our study helps advance the field of neuropharmacology by elucidating the anxiolytic-like and antidepressant-like effects of OS and HU-910. Full article
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Review

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24 pages, 1914 KB  
Review
Radical Revelations: The Interplay of Nitrosative Stress, the Endocannabinoid System, and Treatment of Age-Related Disorders
by Avery Davis, Isabella Y. Casmedes and Michael D. Burton
Int. J. Mol. Sci. 2026, 27(6), 2813; https://doi.org/10.3390/ijms27062813 - 20 Mar 2026
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Abstract
The crosstalk between the endocannabinoid system (ECS) and reactive nitrogen species (RNS) has emerged as an important area of investigation in recent years. Although many aspects of this interaction remain elusive, accumulating evidence demonstrates that the ECS plays a critical role in regulating [...] Read more.
The crosstalk between the endocannabinoid system (ECS) and reactive nitrogen species (RNS) has emerged as an important area of investigation in recent years. Although many aspects of this interaction remain elusive, accumulating evidence demonstrates that the ECS plays a critical role in regulating RNS-mediated signaling under physiological conditions. This modulation can be either inhibitory or stimulatory, depending on the specific receptor subtype, cell type, and tissue location involved. While ECS-RNS interactions support normal cellular homeostasis, their dysregulation contributes to various disease states, particularly neurodegenerative disorders. Studies in both rodent models and human subjects show that ECS modulation can reduce anxiety, attenuate neuroinflammatory responses, and slow disease progression in neurodegenerative conditions. This review examines how cannabinoid-based interventions modulate nitrosative stress and neuroinflammation in Alzheimer’s disease (AD) and Parkinson’s disease (PD), highlighting their potential as targeted therapeutics that address multiple pathological mechanisms simultaneously and may offer advantages over conventional treatment approaches. Full article
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