Fig 2. Plasma epinephrine levels in sham, TBI and TBI+labetalol groups at 3, 6 and 12h.
Plasma epinephrine levels were significantly higher in TBI vs. sham group at all time-points (***p<0.001), and lower for TBI with vs. without i.p. labetalol at 3 and 6h (0.34±0.13 vs. 0.87±0.17ng/mL; and 0.55±0.24 vs. 1.53±0.34 ng/mL, respectively, **p <0.01), and 12h (0.26±0.10 vs. 0.43±0.14 ng/mL; *p<0.05).