Gamma-aminobutyric acid(GABA),a small molecule consisting of only four carbon atoms and one amino group,is surprisingly widely distributed in bacteria,fungi,plants,and animals.Its discovery not only uncovered a key inhibitory neurotransmitter in the central nervous system but also laid a foundational basis for subsequent research into its roles in various physiological and pathological processes such as sleep,anxiety,and epilepsy.Today,as a naturally occurring active component,GABA has become one of the highly sought-after functional ingredients in the health sector^[1].

From Chemical Synthesis to Natural Isolation

In 1883,Schotten first synthesized GABA via chemical means and named it “piperidic acid.”Later,Gabriel further confirmed its structure and officially designated it“gamma-aminobutyric acid(GABA)”in 1889.

In 1949,Steward first identified natural GABA in potato tubers.

In 1950,American scientists Eugene Roberts and Jorge Awapara detected GABA in mammalian brain tissue—a study that quickly garnered immediate international attention^[2].

Research Methodology:Paper Chromatography

Roberts and Awapara owed their success in extracting,purifying,and identifying GABA to the cutting-edge biochemical separation technique of the era:paper chromatography.This technique exploits differences in partition coefficients between the stationary phase(filter paper)and the mobile phase(solvent),enabling the precise separation and quantification of trace components in mammalian brain tissue extracts.

Breaking New Ground:A New Chapter in Neural Inhibition

The 1950 discovery was not merely a scientific event,but more importantly,marked the dawn of a new era in neuroscience.It directly challenged the prevailing notion that the nervous system is dominated by excitatory signaling,forging the first direct link between a simple amino acid and complex neural activity.It also laid an indispensable foundation for the subsequent confirmation of GABA’s identity as an inhibitory neurotransmitter and the elucidation of how the brain maintains the delicate balance between excitation and inhibition.

参考文献

[1]Johnston G A R, Beart P M. Milestone review: GABA, from chemistry, conformations, ionotropic receptors, modulators, epilepsy, flavonoids, and stress to Neuro‐nutraceuticals [J]. Journal of Neurochemistry, 2024, 168(7): 1179–1192.

[2]叶惟泠.γ-氨基丁酸的发现史[J].生理科学进展,1986,(02):187-189.