Serotonin in Development and Disease

A special issue of Cells (ISSN 2073-4409). This special issue belongs to the section "Cell Signaling".

Deadline for manuscript submissions: closed (4 May 2022) | Viewed by 3649

Special Issue Editor


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Guest Editor
Insitut Cochin, INSERM U1016 CNRS 8104, Université de Paris, Laboratoire d'excellence GR-Ex, Paris, France
Interests: serotonin; iron

Special Issue Information

Dear Colleagues,

Serotonin (5-hydroxytryptamine or 5-HT) is a monoamine synthesized from the essential amino acid tryptophan. Although 5-HT was first identified as a substance with contracting properties found in gut cells, it was mostly studied as a neurotransmitter in the central nervous system. However, from the time when tryptophan hydroxylase—the rate limiting enzyme for its synthesis—was shown to exist in two isoforms, the study of both peripheral and central 5-HT revealed the critical roles played by the amine during development as well as in adult life.

Defects in 5-HT signaling have been linked to a variety of psychiatric syndromes as well as to obesity/diabetes and diseases of the cardiovascular system such as hypertension. Several studies have also revealed the role played by 5-HT in the pathophysiology of gastrointestinal tract disorders acting both as an enteric neurotransmitter and a mucosal signaling molecule.

The new era of 5-HT research includes its role as a regulator for the activities of hematopoietic stem cells, and in inflammatory and immunomodulatory diseases, its possible involvement as a growth factor for tumor cells, in addition to understanding the link between 5-HT, gut microbiota, and the brain.

Prof. Dr. Francine Côté
Guest Editor

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Keywords

  • central and peripheral serotonin
  • serotonergic network
  • tryptophan hydroxylase
  • neurotransmitter
  • hormone

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Published Papers (1 paper)

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Research

19 pages, 2307 KiB  
Article
Tph2 Gene Expression Defines Ethanol Drinking Behavior in Mice
by Magdalena Zaniewska, Valentina Mosienko, Michael Bader and Natalia Alenina
Cells 2022, 11(5), 874; https://doi.org/10.3390/cells11050874 - 3 Mar 2022
Cited by 8 | Viewed by 3197
Abstract
Indirect evidence supports a link between disrupted serotonin (5-hydroxytryptamine; 5-HT) signaling in the brain and addictive behaviors. However, the effects of hyposerotonergia on ethanol drinking behavior are contradictory. In this study, mice deficient in tryptophan hydroxylase 2 (Tph2−/−), the rate-limiting [...] Read more.
Indirect evidence supports a link between disrupted serotonin (5-hydroxytryptamine; 5-HT) signaling in the brain and addictive behaviors. However, the effects of hyposerotonergia on ethanol drinking behavior are contradictory. In this study, mice deficient in tryptophan hydroxylase 2 (Tph2−/−), the rate-limiting enzyme of 5-HT synthesis in the brain, were used to assess the role of central 5-HT in alcohol drinking behavior. Life-long 5-HT depletion in these mice led to an increased ethanol consumption in comparison to wild-type animals in a two-bottle choice test. Water consumption was increased in naïve 5-HT-depleted mice. However, exposure of Tph2−/− animals to ethanol resulted in the normalization of water intake to the level of wild-type mice. Tph2 deficiency in mice did not interfere with ethanol-evoked antidepressant response in the forced swim test. Gene expression analysis in wild-type animals revealed no change in Tph2 expression in the brain of mice consuming ethanol compared to control mice drinking water. However, within the alcohol-drinking group, inter-individual differences in chronic ethanol intake correlated with Tph2 transcript levels. Taken together, central 5-HT is an important modulator of drinking behavior in mice but is not required for the antidepressant effects of ethanol. Full article
(This article belongs to the Special Issue Serotonin in Development and Disease)
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