Serotonin 1A and Serotonin 4 Receptors: Essential Mediators of the Neurogenic and Behavioral Actions of Antidepressants

Benjamin Adam Samuels, Indira Mendez-David, Charlène Faye, Sylvain André David, Kerri A. Pierz, Alain M. Gardier, René Hen, Denis J. David

Research output: Contribution to journalReview articlepeer-review

52 Scopus citations

Abstract

Selective serotonin reuptake inhibitors are the mostly widely used treatment for major depressive disorders and also are prescribed for several anxiety disorders. However, similar to most antidepressants, selective serotonin reuptake inhibitors suffer from two major problems: They only show beneficial effects after 2 to 4 weeks and only about 33% of patients show remission to first-line treatment. Thus, there is a considerable need for development of more effective antidepressants. There is a growing body of evidence supporting critical roles of 5-HT1A and 5-HT4 receptor subtypes in mediating successful depression treatments. In addition, appropriate activation of these receptors may be associated with a faster onset of the therapeutic response. This review will examine the known roles of 5-HT1A and 5-HT4 receptors in mediating both the pathophysiology of depression and anxiety and the treatment of these mood disorders. At the end of the review, the role of these receptors in the regulation of adult hippocampal neurogenesis will also be discussed. Ultimately, we propose that novel antidepressant drugs that selectively target these serotonin receptors could be developed to yield improvements over current treatments for major depressive disorders.

Original languageEnglish (US)
Pages (from-to)26-45
Number of pages20
JournalNeuroscientist
Volume22
Issue number1
DOIs
StatePublished - Feb 1 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Clinical Neurology

Keywords

  • 5-HT receptor
  • 5-HT receptor
  • anxiety
  • major depressive disorders
  • mood disorders
  • neurogenesis

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