ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (12): 2299-2306.doi: 10.11843/j.issn.0366-6964.2015.12.023

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Inhibiting Effect Analysis of Danqiao Liquid on Inflammation-related Factors Induced by LPS in RAW264.7 Cells

WEI Li-qin1,2,WANG Dong-sheng1,DONG Shu-wei1,KUANG Xiao-jiao1,ZHANG Shi-dong1* ,YAN Zuo-ting1*   

  1. (1.Lanzhou Institute of Husbandry and Pharmaceutical Science of CAAS/Key Laboratory of Veterinary Pharmaceutics Discovery,Ministry of Agriculture/Engineering & Technology Research Center of Traditional Chinese Veterinary Medicine of Gansu Province,Lanzhou 730050,China;2.College of Veterinary Medicine,Gansu Agricultural University,Lanzhou 730070,China)
  • Received:2015-04-13 Online:2015-12-23 Published:2015-12-23

Abstract:

The aim of the present study was to study the anti-inflammatory effects and possible underlying mechanisms of Danqiao liquid in LPS-stimulated RAW264.7 cells.The cytotoxicity of Danqiao liquid was detected by MTT method.The NO kit assay was adopted to detect the effect of Danqiao liquid on NO release from LPS-induced RAW264.7 cells.ELISA was used to evaluate the production of TNF-α,IL-6 and PGE2 in LPS-induced RAW264.7 cells.Real-time PCR was used to detect the transcription of COX-2,iNOS,TNF-α and IL-6 in LPS-induced RAW264.7 cells.The protein expression of nuclear NF-κB p65 was detected by Western blot.The result showed that the safe medication range of Danqiao liquid was less than 700 μg•mL-1.Compared with the LPS model group,Danqiao liquid(100,300,600 μg•mL-1) could reduce the secretion of NO,PGE2,TNF-α,and IL-6 in cells induced by LPS,and significantly inhibit the mRNA transcription of iNOS,COX-2,TNF-α,IL-6 and the protein expression of NF-κB p65.In conclusion,this study preliminarily proves the protective effect of Danqiao liquid on LPS-induced RAW264.7 macrophages.Its action mechanism may be related to inhibit NF-κB signal pathway and the genes expressions and secretion of inflammatory mediators and cytokines.

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