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Galanin--a neuroendocrine peptide

T Bartfai1, T Hökfelt, U Langel

  • 1Department of Neurochemistry and Neurotoxicology, Stockholm University, Sweden.

Critical Reviews in Neurobiology
|January 1, 1993
PubMed
Summary

Galanin, a neuropeptide, influences insulin release, neuronal activity, and feeding behaviors. Its receptors are targets for treating pain, neurodegenerative diseases, and mood disorders.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Pharmacology

Background:

  • Galanin is a neuropeptide found throughout the body, playing diverse biological roles.
  • It impacts key physiological processes including glucose metabolism, neurotransmitter release, and neuronal excitability.

Purpose of the Study:

  • To elucidate the multifaceted biological effects of galanin.
  • To explore the therapeutic potential of targeting galanin receptors for various medical conditions.

Main Methods:

  • Review of existing literature on galanin's physiological actions.
  • Analysis of galanin's signaling pathways involving Gi/G0 protein-coupled receptors, ion channels, and adenylate cyclase.

Main Results:

  • Galanin inhibits insulin and acetylcholine release, reduces neuronal firing, and stimulates feeding.
  • Its actions are mediated through specific high-affinity receptors linked to intracellular signaling cascades.

Conclusions:

  • Galanin receptor agonists show promise for managing chronic pain and ischemic damage.
  • Galanin receptor antagonists may offer therapeutic benefits for Alzheimer's disease, depression, and eating disorders.

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