Application

γ-Aminobutyric acid (GABA) has been used:in the preparation of GABA–BSA (bovine serum albumin)–GA (glutaraldehyde) conjugate, which is used as a control for GABA immunostainingin the macromolecule suppressed detection of GABA by magnetic resonance spectroscopy (MRS)in the intraintestinal application of GABA in order to increase intraluminal fluid secretion

Biochem/physiol Actions

GABA (γ-Aminobutyric acid) is an amino acid that functions as an inhibitory neurotransmitter in the central nervous system and also functions as a neuromodulator in some peripheral tissues. It binds to GABA_A receptor and inhibits the activity of signal-receiving neurons. The GABA_A receptors are found to form a channel in the cell membranes of neurons. Upon binding of GABA, the receptor is activated to allow the passage of negatively charged molecules, such as chloride ions, into the cell. This results in lowering of excitability of the cell.GABAergic neurons are involved in myorelaxation, anxiolytic treatment, sedation, and anaesthetics. GABA can also influence heart rate and blood pressure.

Major inhibitory neurotransmitter in brain; GABA_A and GABA_B receptor agonist; increases Cl⁻ conductance.