Rapid treatments for depression: Endocannabinoid system as a therapeutic target

Current first-line treatments for major depressive disorder (MDD), i.e., antidepressant drugs and psychotherapy, show delayed onset of therapeutic effect as late as 2–3 weeks or more. In the clinic, the speed of beginning of the actions of antidepressant drugs or other interventions is vital for many reasons.

An investigation of cannabis use for insomnia in depression and anxiety in a naturalistic sample

Little is known about cannabis use for insomnia in individuals with depression, anxiety, and comorbid depression and anxiety. To develop a better understanding of distinct profiles of cannabis use for insomnia management, a retrospective cohort study was conducted on a large naturalistic sample.

Reviewing the Role of the Endocannabinoid System in the Pathophysiology of Depression

Major depressive disorder is a high-impact, debilitating disease and it is currently considered the most prevalent mental illness. It is associated with disability, as well as increased morbidity and mortality. Despite its significant repercussions in our society, its exact pathophysiology remains unclear and therefore, available antidepressant treatment options are limited and, in some cases, ineffective. In the past years, research has focused on the development of a multifactorial theory of depression. Simultaneously, evidence supporting the role of the endocannabinoid system in the neurobiology of neuropsychiatric diseases has emerged. Studies have shown that the endocannabinoid system strongly impacts neurotransmission, and the neuroendocrine and neuroimmune systems, which are known to be dysfunctional in depressive patients. Accordingly, common antidepressants were shown to have a direct impact on the expression of cannabinoid receptors throughout the brain. Therefore, the relationship between the endocannabinoid system and major depressive disorder is worth consideration. Nevertheless, most studies focus on smaller pieces of what is undoubtedly a larger mosaic of interdependent processes. Therefore, the present review summarizes the existing literature regarding the role of the endocannabinoid system in depression aiming to integrate this information into a holistic picture for a better understanding of the relationship between the two.

FURTHER EVIDENCE OF ANXIETY- AND DEPRESSION-LIKE BEHAVIOR FOR TOTAL GENETIC ABLATION OF CANNABINOID RECEPTOR TYPE 1

Authors: Delia Soriano, Alicia Brusco, Laura Caltana Published in Behavioural Brain Research November 2020 Abstract Cannabinoid receptor type 1 (CB1R) is the most abundant cannabinoid receptor in central nervous system. Clinical studies and animal models have shown that the attenuation of endocannabinoid system signaling correlates with the development of psychiatric disorders such as anxiety, depression…

Possible therapeutic applications of cannabis in the neuropsychopharmacology field.

Authors: Javier Fernández-Ruiz, Ismael Galve-Roperh, Onintza Sagredo, Manuel Guzmán
European Neuropsychopharmacology, 10 February 2020

Cannabis use induces a plethora of actions on the CNS via its active chemical ingredients, the so-called phytocannabinoids. These compounds have been frequently associated with the intoxicating properties of cannabis preparations. However, not all phytocannabinoids are psychot…

Cannabinoids in depressive disorders.

Authors: Ewa Poleszak, Sylwia Wośko, Karolina Sławińska, Aleksandra Szopa, Andrzej Wróbel, Anna Serefko
Life Sciences, 15 November 2018

Cannabis sativa is one of the most popular recreational and medicinal plants. Benefits from use of cannabinoid agents in epilepsy, multiple sclerosis, Parkinson’s disease, Alzheimer’s disease, and others have been suggested. It seems that the endocannabinoid system is also inv…

Marijuana use during and after pregnancy and association of prenatal use on birth outcomes: A population-based study.

Authors: Jean Y. Ko, Van T. Tong, Jennifer M. Bombard, Donald K. Hayes, John Davy, et al
Drug and Alcohol Dependence, June 2018

BACKGROUND: We sought to describe the correlates of marijuana use during and after pregnancy, and to examine the independent relationship between prenatal marijuana use and infant outcomes. STUDY DESIGN: We used state-specific data from the Pregnancy Risk Assessment Monitoring…

Effects of Marijuana on Mental Health: Depression.

Authors: Susan A. Stoner
Alcohol & Drug Abuse Institute, University of Washington, June 2017

THC and CBD appear to have antidepressant-like effects in animal models at certain doses but not others. Marijuana has been associated with diminished motivation, but a distinct “cannabis amotivational syndrome” has yet to be substantiated. Studies looking at whether marijuana…

Cannabis use in adolescence and risk for adult psychosis: longitudinal prospective study.

Authors: Louise Arseneault, Mary Cannon, Richie Poulton, Robin Murray, Avshalom Caspi, Terrie E Moffitt
BMJ, 23 November 2002

The strongest evidence that cannabis use may be a risk factor for later psychosis comes from a Swedish cohort study which found that heavy cannabis use at age 18 increased the risk of later schizophrenia sixfold. This study could not establish whether adolescent cannabis use w…