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This study was to investigate anti-inflammatory effect of  Andrographis paniculata  (Burm. f.) Nees (Acanthaceae) (AP). The effects of ethyl acetate (EtOAc) extract from AP on the level of inflammatory mediators were examined first using nuclear factor kappa B (NF-  κ  B) driven luciferase assay. The results showed that AP significantly inhibited NF-  κ  B luciferase activity and tumor necrosis factor   α   (TNF-  α  ), interleukin 6 (IL-6), macrophage inflammatory protein-2 (MIP-2) and nitric oxide (NO) secretions from lipopolysaccharide (LPS)/interferon-  γ   stimulated Raw264.7 cells. To further evaluate the anti-inflammatory effects of AP  in vivo , BALB/c mice were tube-fed with 0.78 (AP1), 1.56 (AP2), 3.12 (AP3) and 6.25 (AP4) mg kg −1  body weight (BW)/day in soybean oil, while the control and PDTC (pyrrolidine dithiocarbamate, an anti-inflammatory agent) groups were tube-fed with soybean oil only. After 1 week of tube-feeding, the PDTC group was injected with 50 mg kg −1  BW PDTC and 1 h later, all of the mice were injected with 15 mg kg −1  BW LPS. The results showed that the AP1, AP2, AP3 and PDTC groups, but not AP4, had significantly higher survival rate than the control group. Thus, the control, AP1, AP2, AP3 and PDTC groups were repeated for  in vivo  parameters. The results showed that the AP and PDTC groups had significantly lower TNF-  α  , IL-12p40, MIP-2 or NO in serum or peritoneal macrophages and infiltration of inflammatory cells into the lung of mice. The AP1 group also had significantly lower MIP-2 mRNA expression in brain. This study suggests that AP can inhibit the production of inflammatory mediators and alleviate acute hazards at its optimal dosages.

evidence-based complementary and alternative medicine

Inhibitory Effects of Ethyl Acetate Extract of<i>Andrographis paniculata</i>on NF-<i>κ</i>B Trans-Activation Activity and LPS-Induced Acute Inflammation in Mice

Inhibitory Effects of Ethyl Acetate Extract ofAndrographis paniculataon NF-κB Trans-Activation Activity and LPS-Induced Acute Inflammation in Mice