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Tobacco Hornworm as an Insect Model System for Cannabinoid Pre-clinical Studies
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Published on: December 29, 2021

Phytocannabinoids, CNS cells and development: a dead issue?

Eric J Downer1, Veronica A Campbell

  • 1Physiology Department, Trinity College Institute for Neuroscience, Dublin, Ireland. Eric.Downer@nuim.ie

Drug and Alcohol Review
|January 19, 2010
PubMed
Summary
This summary is machine-generated.

Early marijuana exposure, especially during pregnancy or adolescence, can harm developing brain cells and neurotransmitter development. Adult brain effects remain unclear, requiring further research into potential structural changes.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Developmental Biology

Background:

  • Marijuana contains over 66 phytocannabinoids, with tetrahydrocannabinoids being the most psychoactive.
  • The precise impact of phytocannabinoids on central nervous system (CNS) cell survival and death is still under investigation.

Purpose of the Study:

  • To review the influence of phytocannabinoids on neural cell fate.
  • To analyze how the timing of marijuana exposure (neonatal, pubertal, adult) affects neurotoxic outcomes.

Main Methods:

  • Literature review examining studies on phytocannabinoid exposure and neural development.
  • Analysis of research focusing on different age groups and their susceptibility to cannabinoid effects.

Main Results:

  • Prenatal and adolescent exposure to phytocannabinoids can disrupt neurotransmitter development and impair neural cell survival and maturation.
  • Evidence regarding marijuana's effect on adult brain composition is conflicting.

Conclusions:

  • Marijuana use during pregnancy may negatively affect infant brain structure.
  • Early-onset marijuana use (before age 17) poses risks to brain composition.
  • The neonatal and immature CNS are more vulnerable to phytocannabinoid-induced damage.