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4-Aminobutyrate Transaminase definition: An enzyme that converts brain gamma-aminobutyric acid (GAMMA-AMINOBUTYRIC ACID) into succinate semialdehyde, which can be converted to succinic acid and enter the citric acid cycle. It also acts on beta-alanine. EC
Baclofen definition: A GAMMA-AMINOBUTYRIC ACID derivative that is a specific agonist at GABA-B receptors (RECEPTORS, GABA-B). It is used in the treatment of spasticity, especially that due to spinal cord damage. Its therapeutic effects result from actions at spinal and supraspinal sites, generally the reduction of excitatory transmission.
Baclofen definition: A synthetic chlorophenyl-butanoic acid derivative used to treat spasms due to spinal cord damage and multiple sclerosis, muscle-relaxing Baclofen acts as a gamma-aminobutyric acid (GABA) agonist specific for GABA-B receptors. It acts at spinal and supraspinal sites, reducing excitatory transmission. (NCI04)
gamma-Aminobutyric Acid definition: The most common inhibitory neurotransmitter in the central nervous system.
Receptors, GABA-A definition: Cell surface proteins which bind GAMMA-AMINOBUTYRIC ACID and control an integral membrane chloride channel. GABA-A receptors are the most prevalent inhibitory neurotransmitter receptors in the brain. Several isoforms have been cloned, and they belong to a superfamily which includes nicotinic receptors, glycine receptors, and 5HT-3 receptors. Most GABA-A receptors have separate modulatory sites sensitive to benzodiazepines and to barbiturates.
GABA Plasma Membrane Transport Proteins definition: A family of plasma membrane neurotransmitter transporter proteins that regulates that extracellular levels of the inhibitory neurotransmitter GAMMA-AMINOBUTYRIC ACID. They differ from GABA RECEPTORS, which signal cellular responses to GAMMA-AMINOBUTYRIC ACID. They control GABA reuptake into PRESYNAPTIC TERMINALS in the CENTRAL NERVOUS SYSTEM through high-affinity sodium-dependent transport.
Receptors, GABA definition: Cell-surface proteins that bind GAMMA-AMINOBUTYRIC ACID with high affinity and trigger changes that influence the behavior of cells. GABA-A receptors control chloride channels formed by the receptor complex itself. They are blocked by bicuculline and usually have modulatory sites sensitive to benzodiazepines and barbiturates. GABA-B receptors act through G-proteins on several effector systems, are insensitive to bicuculline, and have a high affinity for L-baclofen.
GABA receptor definition: regulate a family of transmembrane chloride channels such that binding of GABA or its analogs permits increased chloride influx, membrane hyperpolarization, and inhibition of postsynaptic electrical activity.
GABA Agents definition: Substances used for their pharmacological actions on GABAergic systems. GABAergic agents include agonists, antagonists, degradation or uptake inhibitors, depleters, precursors, and modulators of receptor function.
GABA Agonists definition: Drugs that bind to and activate GAMMA-AMINOBUTYRIC ACID receptors (RECEPTORS, GABA).
11 further definitions >>
GABA definition: [1] Chemie: Akronym für Gamma-Aminobuttersäure (englisch: 'G'amma-'A'mino'b'utter'a'cid)
gaba definition: Bras, main.
GABA definition: Principal neurotransmetteur inhibiteur du système nerveux encéphalique.
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