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Related Experiment Videos

GABA: history and perspectives.

E Florey1

  • 1Fakultät für Biologie, Universität Konstanz, Germany.

Canadian Journal of Physiology and Pharmacology
|July 1, 1991
PubMed
Summary

Gamma-aminobutyric acid (GABA) was identified as factor I, a brain agent. This discovery revolutionized understanding of neurotransmission, though GABA

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Area of Science:

  • Neurobiology
  • Neurochemistry

Background:

  • Recounts the early days at the Montreal Neurological Institute (MNI).
  • Details the development of methods and concepts leading to GABA's identification.

Observation:

  • Factor I, a brain agent, was applied to the spinal cord and sympathetic ganglia.
  • Factor I was discovered as an inhibitory agent in nerve extracts.
  • Picrotoxin was found to prevent the inhibitory effects of factor I.

Findings:

  • Factor I was chemically identified as gamma-aminobutyric acid (GABA) in 1957.
  • Initial doubts about GABA as an inhibitory neurotransmitter were later resolved.

Implications:

  • The functional role and mechanism of GABA in the brain and spinal cord remain incompletely understood.
  • Ongoing research explores GABA's spontaneous release, excitatory actions, glial release, and metabolic turnover.