Figure 1.
Effect of TRAIL administration on neuroprotection elicited by ischemic preconditioning. (a) 6 μg/kg TRAIL i.c.v. administered determines the loss of the neuroprotection elicited by ischemic PC. Infarct volume in rats subjected to tMCAO+Vehicle, tMCAO+0.2 μg/kg TRAIL, tMCAO+6 μg/kg TRAIL, PC+tMCAO+Vehicle, PC+tMCAO+0.2 μg/kg TRAIL, and PC+tMCAO+6 μg/kg TRAIL. Rats were euthanized 24 h after tMCAO. *P<0.05 versus all experimental groups. Each column represents the mean±S.E.M. (n=3–7) of the percentage of the infarct volume compared with the ipsilateral hemisphere. (b) A total of 6 μg/kg TRAIL i.c.v. administered worsens general and focal deficits in rats subjected to PC+tMCAO. *P<0.05 versus PC+vehicle-treated animals