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Epigenetic association with environmental risk factors for mental disorders

Published online by Cambridge University Press:  13 August 2021

S. Le Hellard
S. Le Hellard*
Affiliation:
Clinical Science, University of Bergen, Bergen, Norway

Abstract

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Abstract Body

Major mental disorders have typically a complex aetiology where both genetic and environmental risk factors have been implicated. It has also been suggested that these risk factors could be interactive rather than just additional. In the last decade, large genetic studies have began to unravel the genetic architecture of several of these disorders. While the mechanisms of action of environmental risk factors are still unclear. At the molecular level, gene expression can be regulated at the epigenetic level, e.g. chromatin modifications or DNA methylation. Epigenetic modifications can be affected by both genetic variations as well as environment variations. In this presentation, we will review recent results either from literature or from own data on how several known environmental risks for mental disorders can be associated with modifications of epigenetic markers, especially in DNA methylation. We will for instance look at the modifications associated with smoking, alcohol, cannabis, childhood trauma or obstetric complications. We will discuss also the limits of these studies and how epigenetic modifications can be relevant for the onset of mental disorders and their treatment.

Disclosure

No significant relationships.

Type
Abstract
Information
European Psychiatry , Volume 64 , Special Issue S1: Abstracts of the 29th European Congress of Psychiatry , April 2021 , pp. S34
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of the European Psychiatric Association
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