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“ Gln was increased by 1.9 μmol/g and Glu was decreased by 0.8 μmol/g in patients receiving VGB as compared with patients receiving standard medications alone.”
“In addition, GVG caused a biphasic change in glutamine concentrations (a decline 1–4 hours after administration, followed 20 hours later by an increase).”
Journal of Neural Transmission • 2005 | View Paper
“Repeated subcutaneous injections of the antiepileptic GABA transaminase inhibitor gamma-vinylGABA at a dose of 150 mg/kg per day for 21 days reduced glutamine synthetase activity by 36% in the cortex and 22% in the cerebellum.”
“In addition, γ‐vinyl GABA caused a marked increase in hypotaurine content in rat brain, suggesting that it acts as an inhibitor of hypotaurine dehydrogenase, and it produced significant decreases in brain contents of glutamine and threonine.”