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High times for cannabis: Epigenetic imprint and its legacy on brain and behavior.

Henrietta Szutorisz, Yasmin L. Hurd

Neuroscience & Biobehavioral Reviews February 2018 DOI: 10.1016/j.neubiorev.2017.05.011 (opens in new tab)

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AI-extracted from the abstract
Characteristics Review Peer reviewed
Topics Neuroplasticity Cannabis
Keywords Adolescence Cannabinoid Chromatin Dna methylation Epigenetics Multigenerational inheritance Prenatal development Transcription
Key findings The authors propose that developmental cannabinoid exposure can produce lasting epigenetic changes—such as DNA methylation and chromatin alterations—that persist across the lifespan and potentially into subsequent generations. They argue that human and animal studies have begun to identify specific epigenetic disruptions in the brain and periphery, but mechanistic investigations remain sparse, and that understanding this 'molecular memory' could inform preventive strategies and treatments for neuropsychiatric risks.

Abstract

Extensive debates continue regarding marijuana (Cannabis spp), the most commonly used illicit substance in many countries worldwide. There has been an exponential increase of cannabis studies over the past two decades but the drug's long-term effects still lack in-depth scientific data. The epigenome is a critical molecular machinery with the capacity to maintain persistent alterations of gene expression and behaviors induced by cannabinoids that have been observed across the individual's lifespan and even into the subsequent generation. Though mechanistic investigations regarding the consequences of developmental cannabis exposure remain sparse, human and animal studies have begun to reveal specific epigenetic disruptions in the brain and the periphery. In this article, we focus attention on long-term disturbances in epigenetic regulation in relation to prenatal, adolescent and parental germline cannabinoid exposure. Expanding knowledge about the protracted molecular memory could help to identify novel targets to develop preventive strategies and treatments for behaviors relevant to neuropsychiatric risks associated with developmental cannabis exposure.

Comparable studies

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