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Related Experiment Video

Updated: May 21, 2025

Preclinical Model of Prenatal Delta-9-Tetrahydrocannabinol Exposure to Assess Its Impact on Neurodevelopmental Outcomes

Preclinical Model of Prenatal Delta-9-Tetrahydrocannabinol Exposure to Assess Its Impact on Neurodevelopmental Outcomes

Published on: February 28, 2025

Cannabinoid CB1 receptor-sensitive neurodevelopmental processes and trajectories.

Kuei Y Tseng¹, Hanna M Molla²

¹Department of Anatomy & Cell Biology, University of Illinois at Chicago - College of Medicine, Chicago, IL, USA. tsengky@uic.edu.

Molecular Psychiatry

|May 19, 2025

Summary

High-potency cannabis exposure impacts the developing brain during sensitive neurodevelopmental periods. Understanding these age-specific effects mediated by cannabinoid signaling is crucial for public health guidelines.

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Area of Science:

Neuroscience
Public Health
Pharmacology

Background:

High-potency cannabis (high Δ⁹-Tetrahydrocannabinol) is increasingly accessible.
Existing reviews summarize cannabis effects on the developing brain.
Age-specific sensitivity to cannabis, driven by cannabinoid receptor signaling, requires detailed examination.

Purpose of the Study:

Provide a mechanistic overview of cannabis exposure during sensitive neurodevelopmental periods.
Integrate human and animal model data to understand lasting consequences.
Define mechanisms underlying sensitive periods and age-dependent cannabis impact.

Main Methods:

Expert review integrating human and animal model data.
Utilized the frontal cortex as a proxy for aligning human and rodent cannabinoid system development.
Analyzed studies within a developmental framework focusing on neural circuit plasticity.

Main Results:

Cannabis exposure during sensitive neurodevelopmental periods can lead to lasting consequences.
Cannabinoid type 1 receptor signaling plays a key role in age-specific sensitivity.
The frontal cortex serves as a useful model for comparative neurodevelopment.

Conclusions:

A mechanistic understanding of sensitive periods is vital for public health.
Cannabis impact varies significantly across childhood, adolescence, and young adulthood.
Further research is needed to align neurodevelopmental variables and inform guidelines for at-risk populations.