Next, the effect of luteolin and luteolin glycosides on the expression of some cytokines, namely TNF-α, IL-1β and IL-6, was evaluated by real time RT-PCR. Luteolin aglycone signifi-cantly inhibited LPS-induced expression of these three cytokines (Fig. 4b–d). TNF-α and IL-6 expression was reduced by 53.3 ± 10.0% and 73.7 ± 34.7%, respectively, and IL-1β expres-sion was completely abolished.Concerning the effect of luteolin glycosylated, only L7OG modulated cytokine expression, re-ducing the LPS-induced IL-1β expression by 45.7 ± 30.4%, thus reinforcing the L7OG anti-inflammatory properties, by inhibiting NO and also IL-1β production. Interestingly, the inhibition of NO production and iNOS expression by luteolin 5-O-glucoside was recently reported (Jung, Jin, Min, Kim, & Choi, 2012), thus indicating that the position of O-glycosylation in the A ring did not affect the anti-inflammatory activity.