title: Effect of triptolide on secretion of inflammatory cellular factors TNF-α and IL-8 in peritoneal macrophages of mice activated by lipopolysaccharide.
abstract: BACKGROUND
  Research has been carried out to look for safe and effective anti-inflammation drugs from traditional Chinese herbal medicine. As a powerful research technology of life science, molecular biology has entered many areas of traditional Chinese medicine. This study aimed to investigate the effect of triptolide on tumor necrosis factor-a (TNF-α) and interleukin-8 (IL-8) of peritoneal macrophages activated by lipopolysaccharide (LPS) in mice.
  
  
  METHODS
  Peritoneal elicited macrophages were separated, purified and activated by LPS in mice, then cultured in vitro with triptolide at different concentrations. The activity of TNF-α and the level of IL-8 of cellular supernatants were determined by MTT colorimetric assay and ELISA, respectively.
  
  
  RESULTS
  The activity of TNF-α in macrophages was significantly inhibited (P<0.01) by triptolide (10(-1)-10(1)μg/ml) during 4-24 hours in a time- and dose-dependent manner. The level of IL-8 in macrophages was significantly inhibited (P<0.01) by triptolide (10(-1)-10(1)μg/ml) in 12 hours in a dose-dependent manner.
  
  
  CONCLUSIONS
  Triptolide could inhibit the activity of TNF-α and the level of IL-8 in macrophages activated by LPS.
authors.affiliation: Department of Traumatic Surgery, Affiliated Tongji hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Fan
authors.initials: F
authors.lastname: Yang
authors.affiliation: Department of Traumatic Surgery, Affiliated Tongji hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Xiang-Jun
authors.initials: XJ
authors.lastname: Bai
authors.affiliation: Department of Traumatic Surgery, Affiliated Tongji hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Duan
authors.initials: D
authors.lastname: Hu
authors.affiliation: Department of Traumatic Surgery, Affiliated Tongji hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Zhan-Fei
authors.initials: ZF
authors.lastname: Li
authors.affiliation: Department of Traumatic Surgery, Affiliated Tongji hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
authors.forename: Kai-Jun
authors.initials: KJ
authors.lastname: Liu
keywords: Interleukin-8; Lipopolysaccharide; Macrophage; Triptolide; Tumor necrosis factor-α