Figure 6. Placental levels of inflammatory cytokines in different groups on gestational day 20. Placental levels of interleukin IL-6 (A), IL1-β (B), tumor necrosis factor (TNF)-α (C), and interferon (IFN)-γ (D) were significantly higher in the MC group and lower in the Uncaria rhynchophylla alkaloid extract (URE) group. Data are reported as means±SE (n=8/group). ^##P<0.01 vs PC group, *P<0.05 and **P<0.01 vs MC group (ANOVA). PC: pregnant control group; MC: LPS-treated group; HURE: LPS plus high-dose URE; MURE: LPS plus medium-dose URE; LURE: LPS plus low-dose URE.