Figure 3.

Effect of E. africana fraction CH₂Cl₂/MeOH 5% on LPS-induced expression of proinflammatory cytokines and iNOS in microglia. N9 cells were pre-treated with different concentrations of Ea5 (0.05, 0.5, 5 and 50 μg/ml) and or Baicalin (5 μg/ml), with or without LPS for a stimulation period of 24 h. Total RNAs were isolated, and mRNA levels of IL1β, IL6 and TNFα were measured by RT-PCR. β-actin expression was used as an internal control. (A). IL1β, (B). IL6 and (C). TNFα.* P < 0.05, **P < 0.01 and ***P < 0.001 compared to LPS treated group. (D): E. africana fraction CH₂Cl₂/MeOH 5% and Baicalin reduced LPS-induced iNOS gene expression in macrophage cell line. N9 cells were incubated without or with LPS 1 μg/ml together with the indicated amounts of the extract or Baicalin. After 24 hours iNOS mRNA was quantified by qRT-PCR.* P < 0.05, **P < 0.01 and ***P < 0.001 compared to LPS treated group.