Effect of sevoflurane postconditioning on HUVEC cultures after LPS stimulation. (a) Effect on TLR2 expression; (b) effect on TLR4 expression; (c) levels of TNF-α and (d) IL-6 after sevoflurane postconditioning on LPS-treated HUVEC cultures. *p <0.05, ** p<0.01, *** p<0.001. AFU: Arbitrary fluorescence units. Analysis was performed immediately after sevoflurane exposure (t=0), at 6 (t=6) and 24 (t=24) hours. LPS: Lipopolysaccharide.