Peer-Reviewed Research on Endocannabinoid System and Cannabinoid-Based Therapies in Autism Spectrum Disorder (ASD)

Key Research: Clinical and Biomarker Studies

Lower circulating endocannabinoid levels in children with autism spectrum disorder

Authors: Aran, A., Eylon, M., Harel, M., et al.

Year: 2019

Summary: This study found significantly lower serum levels of anandamide (AEA), oleoylethanolamine (OEA), and palmitoylethanolamide (PEA) in children with ASD compared to neurotypical controls. These findings suggest that circulating endocannabinoid levels could serve as potential stratification biomarkers for ASD.

Link: DOI: 10.1186/s13229-019-0256-6

Plasma anandamide concentrations are lower in children with autism spectrum disorder

Authors: Karhson, D. S., Krasinska, K. M., Dallaire, J. A., et al.

Year: 2018

Summary: This research demonstrated lower concentrations of anandamide (AEA) in plasma samples from young children with ASD compared to typically developing children, corroborating findings of reduced endocannabinoid tone in ASD.

Link: DOI: 10.1186/s13229-018-0203-y

Evaluation of the efficacy and safety of cannabidiol-rich cannabis extract in children with autism spectrum disorder: randomized, double-blind, and placebo-controlled clinical trial

Authors: Silva Junior, E. A., Medeiros, W. M. B., Santos, J. P. M., et al.

Year: 2024

Summary: A randomized, double-blind, placebo-controlled clinical trial investigating a CBD-rich cannabis extract in children with ASD. The study reported significant improvements in social interaction, anxiety, psychomotor agitation, number of meals, and concentration (specifically in mild ASD cases), with minimal and mild adverse effects.

Link: DOI: 10.47626/2237-6089-2021-0396

Oral cannabidiol use in children with autism spectrum disorder to treat related symptoms and co-morbidities

Authors: Barchel, D., Stolar, O., De-Haan, T., et al.

Year: 2018

Summary: This clinical study indicated that cannabidiol (CBD) treatment led to reductions in various co-occurring conditions in children with ASD, including self-harm behavior, anger attacks, hyperactivity, sleep problems, and anxiety.

Link: DOI: 10.3389/fphar.2018.01521

Real life experience of medical cannabis treatment in autism: Analysis of safety and efficacy

Authors: Bar-Lev Schleider, L., Mechoulam, R., Saban, N., et al.

Year: 2019

Summary: This study analyzed real-life experience with medical cannabis treatment in autism, reporting considerable amelioration in behavioral problems in a significant percentage of children with ASD and severe behavioral issues, along with improvements in anxiety and communication.

Link: DOI: 10.1038/s41598-018-37570-y

Brief Report: Cannabidiol-Rich Cannabis in Children with Autism Spectrum Disorder and Severe Behavioral Problems-A Retrospective Feasibility Study

Authors: Aran, A., Cassuto, H., Lubotzky, A., et al.

Year: 2019

Summary: A retrospective feasibility study that investigated the effectiveness of CBD-rich cannabis drugs against behavioral problems in children with ASD. It found considerable improvements in behavior, anxiety, and communication problems.

Link: DOI: 10.1007/s10803-018-3808-2

Additional Literature: Supporting and Mechanistic/Preclinical Studies

Endocannabinoid system involvement in autism spectrum disorder: An overview with potential therapeutic applications

Label: Overview of ECS and ASD Pathophysiology

Authors: Schultz, S., & Siniscalco, D.

Year: 2019

Summary: This review highlights the significant involvement of the endocannabinoid (EC) system in the pathophysiology of neuropsychiatric disorders, including ASD, particularly its role in regulating the immune system. It also discusses the potential of cannabidiol (CBD) to increase endocannabinoid tone and alleviate common co-occurring conditions in ASD like seizures, gastro-intestinal problems, anxiety, depression, attention deficit, and sleep problems.

Link: DOI: 10.3934/molsci.2019.1.27

Endocannabinoid System Unlocks the Puzzle of Autism Treatment via Microglia

Label: ECS and Microglia in ASD Treatment

Authors: Su, T., Yan, Y., Li, Q., et al.

Year: 2021

Summary: This review article focuses on the expression of a complete ECS signaling system in microglia and how modulating ECS signaling can regulate microglia functions. It provides insights into how targeting ECS on microglia can contribute to maintaining CNS positivity and thus improve autism symptoms.

Link: DOI: 10.3389/fpsyt.2021.734837

The Endocannabinoid System as a Window Into Microglial Biology and Its Relationship to Autism

Label: Microglial-Endocannabinoid Signaling and ASD

Authors: Araujo, D. J., Tjoa, K., & Saijo, K.

Year: 2019

Summary: This mini-review discusses microglial dysfunction in ASD and highlights the endocannabinoid system as a promising tool to modulate microglial involvement due to its anti-inflammatory effects. It emphasizes that increased eCB signaling is associated with an anti-inflammatory, protective phenotype in microglia, with CB2 receptors primarily restricted to these cells.

Link: DOI: 10.3389/fncel.2019.00424

Unraveling the Endocannabinoid System: Exploring Its Therapeutic Potential in Autism Spectrum Disorder

Label: Comprehensive Review of ECS Therapeutic Potential

Authors: Jana, A., Nath, A., Sen, P., et al.

Year: 2024

Summary: This review provides an in-depth exploration of the endocannabinoid system's significant involvement in the pathogenesis of ASD, influencing metabolic, cellular, and immune pathways. It discusses evidence from preclinical genetic (FXS, NLGN3) and environmental (VPA) models of ASD, proposing the ECS as a promising target for therapeutic interventions.

Link: DOI: 10.1007/s12017-024-08781-6