ArticleScientific reports2021
Serotonin deficiency induced after brain maturation rescues consequences of early life adversity.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 6 citations in OpenAlex.
- Serotonin deficiency caused by inactivation of Tph2 in mice leads to widespread sex-dependent changes in cerebral oxidative metabolic activity.Journal of neural transmission (Vienna, Austria : 1996) · 2026Article
- Brain Serotonin Deficiency Impairs Ovarian Reserve Function via the Hypothalamic-Pituitary-Ovarian Axis.Neuroscience bulletin · 2026Article
- Fe(II) with Tris(1-pyrazolyl)methane Complex Increases Thermal Stability In Vitro and Activity In Vivo of the Mutant 447R Form of Mouse Tryptophan Hydroxylase 2.International journal of molecular sciences · 2026Article
- Iron Ions Increase the Thermal Stability In Vitro and Activity In Vivo of the 447R Mutant Form of Mouse Tryptophan Hydroxylase 2.International journal of molecular sciences · 2025Article
- Special Issue "Neuromodulatory Effects of Serotonin".International journal of molecular sciences · 2025Article
- In Vitro and In Vivo Chaperone Effect of (R)-2-amino-6-(1R, 2S)-1,2-dihydroxypropyl)-5,6,7,8-tetrahydropterin-4(3H)-one on the C1473G Mutant Tryptophan Hydroxylase 2.Biomolecules · 2023Article
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Authors and funding
6 authors at 5 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Brain serotonin (5-HT) system dysfunction is implicated in depressive disorders and acute depletion of 5-HT precursor tryptophan has frequently been used to model the influence of 5-HT deficiency on emotion regulation. Tamoxifen (TAM)-induced Cre/loxP-mediated inactivation of the tryptophan hydroxylase-2 gene (Tph2) was used to investigate the effects of provoked 5-HT deficiency in adult mice (Tph2 icKO) previously subjected to maternal separation (MS). The efficiency of Tph2 inactivation was validated by immunohistochemistry and HPLC. The impact of Tph2 icKO in interaction with MS stress (Tph2 icKO × MS) on physiological parameters, emotional behavior and expression of 5-HT system-related marker genes were assessed. Tph2 icKO mice displayed a significant reduction in 5-HT immunoreactive cells and 5-HT concentrations in the rostral raphe region within four weeks following TAM treatment. Tph2 icKO and MS differentially affected food and water intake, locomotor activity as well as panic-like escape behavior. Tph2 icKO prevented the adverse effects of MS stress and altered the expression of the genes previously linked to stress and emotionality. In conclusion, an experimental model was established to study the behavioral and neurobiological consequences of 5-HT deficiency in adulthood in interaction with early-life adversity potentially affecting brain development and the pathogenesis of depressive disorders.
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