ABSTRACT
AIM To study the in vitro and in vivo anti-inflammatory effects of extract from Daphniphyllum calycinum Benth and its mechanism of action.METHODS LPS-induced mouse RAW264.7 macrophage and mouse endotoxemia model were used to observe the influences of D.calycinum extract on the levels of NO,TNF-α,IL-1β and IL-10.The toxicity of D.calycinum extract on RAW264.7 macrophage was determined by MTT assay.Fifty female BALB/c mice were administered with D.calycinum extract by gavage.Fourteen days later,the mice were intraperitoneally injected with LPS,the levels of NO,TNF-α,IL-1 β and IL-10 in serum were determined by Griess and ELISA kit.The protein expressions of NO and TNF-α in mouse liver were studied by immunohistochemistry method.RESULTS D.calycinum extract could significantly inhibit the release of NO,TNF-α,IL-1 β and IL-10.Immunohistochemistry results showed that the extract could inhibit the protein expressions of iNOS and TNF-α.CONCLUSION D.calycinum extract has a significant anti-inflammatory effect,and its mechanism may be related to decreasing the release of inflammatory factors.
ABSTRACT
AIM To study the in vitro and in vivo anti-inflammatory effects of extract from Daphniphyllum calycinum Benth and its mechanism of action.METHODS LPS-induced mouse RAW264.7 macrophage and mouse endotoxemia model were used to observe the influences of D.calycinum extract on the levels of NO,TNF-α,IL-1β and IL-10.The toxicity of D.calycinum extract on RAW264.7 macrophage was determined by MTT assay.Fifty female BALB/c mice were administered with D.calycinum extract by gavage.Fourteen days later,the mice were intraperitoneally injected with LPS,the levels of NO,TNF-α,IL-1 β and IL-10 in serum were determined by Griess and ELISA kit.The protein expressions of NO and TNF-α in mouse liver were studied by immunohistochemistry method.RESULTS D.calycinum extract could significantly inhibit the release of NO,TNF-α,IL-1 β and IL-10.Immunohistochemistry results showed that the extract could inhibit the protein expressions of iNOS and TNF-α.CONCLUSION D.calycinum extract has a significant anti-inflammatory effect,and its mechanism may be related to decreasing the release of inflammatory factors.