Figure 3.

Effects of increasing doses of propofol on the glutamate (Glu) (A), γ-aminobutyric acid (GABA) (B) and glycine (Gly) (C) efflux in the spinal cord dorsal horns of rats. Glutamate, glycine and GABA were shown as percent compared with the data before administration of propofol. Baseline levels of glutamate, glycine and GABA were set as 100%. N = 15; Values are percentage ± SEM. *P < 0.05, **P < 0.01 as compared to baseline; #P < 0.05, ##P < 0.01 as compared to 400 µg/(kg·min) propofol infusion; ♦P < 0.05 as compared to 600 µg/(kg·min) propofol infusion