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Current Psychiatry Reviews

Editor-in-Chief

ISSN (Print): 1573-4005
ISSN (Online): 1875-6441

Nature and Nurture: Genetic Influences and Gene-Environment Interactions in Depression

Author(s): Sophiya Benjamin and Warren D. Taylor

Volume 6, Issue 2, 2010

Page: [82 - 90] Pages: 9

DOI: 10.2174/157340010791196484

Price: $65

Abstract

There is a vast literature on the genetic basis for Major Depressive Disorder, a topic which only continues to expand. Several genes have been examined in the context of MDD. Some of these genetic studies have been replicated but most have not. One possible rationale for this lack of replication is an increasing recognition that gene-environment interactions play a crucial role in determining the risk of developing MDD.

In this review, we highlight the findings from a Genome Wide Association study as well as linkage studies of depression and discuss the implications of these results. We then summarize some of the most important genetic variations identified in depression, including conclusions from published meta-analyses, with an emphasis on gene-environment interactions. Finally we discuss both the need for and complexity of conducting gene-environment studies in MDD, as well as limitations inherent in current approaches.

Keywords: Genetics, depression, gene environment interaction, single nucleotide polymorphism, genome wide association studies, stress

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