Cited by 323Genetic Associations and EpidemiologyNeurotransmitter Receptor Influence on BehaviorTryptophan and brain disorders

SNP and haplotype analysis of a novel tryptophan hydroxylase isoform (TPH2) gene provide evidence for association with major depression

Zill, P, Baghai, T C, Zwanzger, P, Schüle, C, Eser, D, Rupprecht, R, Möller, H-J, Bondy, B +1 more·2004·Molecular Psychiatry

Abstract

Tryptophan hydroxylase (TPH), being the rate-limiting enzyme in the biosynthesis of serotonin plays a major role as candidate gene in several psychiatric disorders. Recently, a second TPH isoform (TPH2) was identified in mice, which was exclusively present in the brain. In a previous post-mortem study of our own group, we could demonstrate that TPH2 is also expressed in the human brain, but not in peripheral tissues. This is the first report of an association study between polymorphisms in the TPH2 gene and major depression (MD). We performed single-nucleotide polymorphism (SNP), haplotype and linkage disequlibrium studies on 300 depressed patients and 265 healthy controls with 10 SNPs in the TPH2 gene. Significant association was detected between one SNP (P=0.0012, global P=0.0051) and MD. Haplotype analysis produced additional support for association (P<0.0001, global P=0.0001). Our findings provide evidence for an involvement of genetic variants of the TPH2 gene in the pathogenesis of MD and might be a hint on the repeatedly discussed duality of the serotonergic system. These results may open up new research strategies for the analysis of the observed disturbances in the serotonergic system in patients suffering from several other psychiatric disorders.

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Crossref · 10.1038/sj.mp.4001525

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Authors
Zill, P., Baghai, T. C., Zwanzger, P., Schüle, C., Eser, D., Rupprecht, R., Möller, H.-J., Bondy, B., & Ackenheil, M.
Affiliations
Ludwig-Maximilians-Universität München (DE)
Corresponding author
Zill, P
Venue
Molecular Psychiatry
Published
2004-05-04
Volume
9
Issue
11
Pages
1030-1036
ISSN
  • 1359-4184 (ISSN-L)
  • 1476-5578
OpenAlex
W2077425100
Cited by
323
References
29
Citations by year
2026: 3 · 2025: 6 · 2024: 1 · 2023: 6 · 2022: 7 · 2021: 10 · 2020: 8 · 2019: 10 · 2018: 6 · 2017: 9 · 2016: 10 · 2015: 12 · 2014: 13 · 2013: 17 · 2012: 22
FWCI
14.77
Type
journal article
Language
en
Open access
closed
Locations
  • Molecular Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
Keywords
tryptophan hydroxylase 2, TPH2 gene, major depressive disorder, single nucleotide polymorphisms, haplotype analysis, linkage disequilibrium, genetic association, serotonin synthesis, serotonergic system, brain-specific expression, candidate genes
MeSH terms
Adult, Brain, Chromosomes, Human, Pair 12, Major Depressive Disorder, Female, Gene Frequency, Haplotypes, Humans, Isoenzymes, Lod Score, Male, Middle Aged, Serotonin, Tryptophan Hydroxylase, Linkage Disequilibrium, Genetic Predisposition to Disease, Polymorphism, Single Nucleotide

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