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“Isolated rat cerebral cortex … were able to accumulate L-carnitine and this process was competitively inhibited by 1 mM gamma-aminobutyric acid (GABA) with a shift of Km from 7.8 +/- 1.9 mM to 14.6 +/- 4.0 mM. Addition of GABA also affected distribution of carnitine derivatives.”
Biochemical and biophysical research communications • 1995 | View Paper
“ GABA was the most potent inhibitor of L-carnitine uptake.”
“The results indicate that the uptake of L-carnitine by rat cortical neurones occurs in part by a process that can be potently inhibited by GABA and GABA uptake blockers.”