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Behav Brain Res. 2015 Jan 15;277:78-88. doi: 10.1016/j.bbr.2014.06.005. Epub 2014 Jun 11.

Life without brain serotonin: reevaluation of serotonin function with mice deficient in brain serotonin synthesis.

Author information

1
Max-Delbrueck-Center for Molecular Medicine, Berlin, Germany.
2
Department of Biology, Unit of Cell and Developmental Biology, University of Pisa, Pisa, Italy.
3
Laboratory of Translational Neuroscience, Division of Molecular Psychiatry, Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany.
4
Max-Delbrueck-Center for Molecular Medicine, Berlin, Germany. Electronic address: alenina@mdc-berlin.de.

Abstract

Tryptophan hydroxylase (TPH) is a rate limiting enzyme in the synthesis of serotonin (5-HT), a monoamine which works as an autacoid in the periphery and as a neurotransmitter in the central nervous system. In 2003 we have discovered the existence of a second Tph gene, which is expressed exclusively in the brain, and, therefore, is responsible for the 5-HT synthesis in the central nervous system. In the following years several research groups have independently generated Tph2-deficient mice. In this review we will summarize the data gained from the existing mouse models with constitutive or conditional deletion of the Tph2 gene, focusing on biochemical, developmental, and behavioral consequences of Tph2-deficiency.

KEYWORDS:

Animal model; Behavior; Serotonin; Serotonin receptors; Serotonin transporter; Tryptophan hydroxylase 2

PMID:
24928769
DOI:
10.1016/j.bbr.2014.06.005
[Indexed for MEDLINE]
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