Taurine, glycinergic tone, and anxiolytic signaling

Objective: To characterize taurine's role in inhibitory neurotransmission and anxiolytic signaling. In cellular and animal experiments, taurine was evaluated for its ability to modulate glycine target and GABA-linked pathways, alter neuronal excitability, and influence behavioral readouts related to anxiety. Taurine exposure enhanced inhibitory tone in multiple preparations and reduced excitatory responses under stress-related conditions. In vivo, treatment was associated with calmer exploratory behavior and reduced stress-reactive phenotypes without strong evidence of nonspecific sedation at the doses studied. Mechanistic experiments suggested that the effects were mediated through a combination of target-level modulation, membrane stabilization, and downstream changes in synaptic signaling. The findings support taurine as a neuromodulatory amino acid with potential anxiolytic relevance, but the work remains largely preclinical and dose-response relationships were not fully resolved. Further studies are needed to distinguish anxiolysis from general calming effects and to determine translational relevance in humans.