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Related Experiment Videos

Serotonergic mechanisms in anxiety

A S Eison1, M S Eison

  • 1CNS Drug Discovery, Bristol-Myers Squibb Company, Wallingford, CT.

Progress in Neuro-Psychopharmacology & Biological Psychiatry
|January 1, 1994
PubMed
Summary

Central serotonin (5-HT) modulates anxiety, with new drugs targeting 5-HT receptors showing promise. Selective 5-HT receptor agonists and antagonists are being investigated for anxiety treatment.

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Area of Science:

  • Neuroscience
  • Pharmacology

Background:

  • Central serotonin (5-HT) plays a key role in modulating anxiety and mediating the effects of benzodiazepines.
  • The development of selective receptor subtype agonists and antagonists has renewed interest in 5-HT's role in anxiety.

Purpose of the Study:

  • To review the evidence for the involvement of central 5-HT in anxiety.
  • To explore the potential of novel 5-HT receptor modulators as anxiolytics.

Main Methods:

  • Review of anatomical, behavioral, neurochemical, and electrophysiological evidence.
  • Analysis of data from selective 5-HT receptor agonists and antagonists.
  • Evaluation of preclinical and clinical studies on azapirones, 5-HT2 antagonists, and 5-HT3 antagonists.

Main Results:

  • Azapirones (e.g., buspirone) acting as 5-HT1A partial agonists show anxiolytic effects in animal models and humans.
  • Clinical data for 5-HT2 antagonists (e.g., ritanserin) suggest anxiolytic potential, though preclinical data are mixed.
  • 5-HT3 antagonists (e.g., odansetron) demonstrate anxiolytic potential in animal models, requiring clinical confirmation.

Conclusions:

  • Novel 5-HT receptor modulators, including 5-HT1A partial agonists and potentially 5-HT2 and 5-HT3 antagonists, represent promising avenues for anxiety treatment.
  • Further clinical validation is necessary to confirm the therapeutic utility of 5-HT2 and 5-HT3 antagonists in managing anxiety disorders.

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