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Cannabinoid tolerance and dependence.

A H Lichtman1, B R Martin

  • 1Department of Pharmacology and Toxicology, Virginia Commonwealth University, 410 North 12th Street, P.O. Box 980613, Richmond, VA 23298-0613, USA. alichtma@hsc.vcu.edu

Handbook of Experimental Pharmacology
|April 7, 2006
PubMed
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Chronic marijuana use leads to tolerance and withdrawal. Research using animal models investigates molecular changes in the brain and potential treatments for marijuana dependence.

Area of Science:

  • Neuroscience
  • Pharmacology
  • Addiction Research

Background:

  • Widespread marijuana use has led to a growing population of chronic users.
  • Chronic cannabinoid administration causes significant behavioral tolerance and withdrawal symptoms.
  • Marijuana withdrawal syndrome is increasingly recognized as clinically significant.

Purpose of the Study:

  • To review recent advances in understanding the molecular impact of chronic cannabinoid exposure.
  • To explore changes in cannabinoid receptors and signal transduction pathways.
  • To discuss potential pharmacotherapies for marijuana dependence.

Main Methods:

  • Review of current scientific literature on chronic cannabinoid administration.
  • Analysis of molecular plasticity in brain regions of animal models.

Related Experiment Videos

  • Examination of preclinical and clinical studies on marijuana dependence treatments.

    • Main Results:

    • Chronic cannabinoid exposure induces profound molecular plasticity in the brain.
    • Alterations in cannabinoid receptors and downstream signaling pathways are observed.
    • Animal models demonstrate tolerance and dependence, mirroring human experiences.

    Conclusions:

    • Understanding molecular changes is crucial for addressing marijuana dependence.
    • Pharmacotherapies are being investigated to mitigate withdrawal and dependence.
    • Further research is needed to develop effective treatments for chronic marijuana users.