Molecular genetic findings in suicidal behavior: what is beyond the serotonergic system?

Hans-Jürgen Möller, Thomas Bronisch, Dan Rujescu, Andreas Thalmeier, Ina Giegling

Journal: Archives of suicide research : official journal of the International Academy for Suicide Research 2007;11(1):17-40

PMID: 17178640

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Abstract

Various studies provide consistent evidence for a genetic component in suicidal behavior. First molecular genetic studies concentrated on genes of the serotonergic system based on the biochemical evidence that serotonergic neurotransmission is implicated in this behavior. Furthermore, genes of the dopaminergic and noradrenergic neurotransmitter systems have also been the subjects of investigations in this context. Some epidemical and clinical studies showed that low serum cholesterol levels are associated with suicidal behavior and genes involved in these pathways have been investigated. Microarray experiments provide the possibility of genome-wide gene expression analysis and help to investigate associated molecular mechanisms. The aim of this article is to review molecular genetic studies in suicidal behavior and to emphasize findings on new genes.

Address: Department of Psychiatry, Ludwig-Maximilians University, Munich, Germany. [email protected]

DOI: 10.1080/13811110600897317

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MeSH Terms: Cholesterol, Genetic Linkage, Genetic Markers, Genetic Predisposition to Disease, Genetic Testing, Genotype, Humans, Mood Disorders, Neurotransmitter Agents, Phenotype, Polymorphism, Genetic, Receptors, Neurotransmitter, Suicide, Suicide, Attempted, Twin Studies as Topic