title: [Protective Effect of Total Flavones of Bidens pilosa L. on IgA1 Induced Injury of HUVECs in Henoch-Schönlein Purpura Children Patients].
abstract: OBJECTIVE
  To explore the protective effect and mechanism of total flavones of Bidens pilosa L. (TFB) on IgA1 induced injury of venous endothelial cells in Henoch-Schönlein purpura (HSP) children patients. METHODS Human umbilical venous endothelial cells (HUVECs) were taken as subject. They were intervened by normal IgA1 and HSP children patients' serum IgA1, and added with different concentrations TFB at the same time. Then they were divided into the blank control group, the normal control group, the HSP IgA1 group, and HSP IgA1 plus TFB (1.0, 0.5, 0.25 mg/mL) groups. Levels of TNF-α and IL-8 in supernate were detected by ELISA. The NO level was detected by nitrate reductase method. mRNA and protein expressions of NF-κB and ICAM-1 in HUVECs were detected by fluorescent quantitative PCR and Western blot respectively.
  
  
  RESULTS
  Compared with the normal control group and the blank control group, levels of IL-8, TNF-α, and NO all significantly increased in the HSP group (P < 0.05). Compared with the HSP group, levels of IL-8, TNF-α, and NO significantly decreased after intervention of TFB (1.0 and 0.5 mg/mL; P < 0.05, P < 0.01). Results of fluorescent quantitative PCR and Western blot showed, as compared with the blank control group and the normal control group, mRNA and protein expressions of NF-κB and ICAM-1 in HSP children patients' serum IgA1 induced venous endothelial cells significantly increased with statistical difference (P < 0.05, P < 0.01). Compared with the HSP group, mRNA and protein expressions of NF-KB and ICAM-1 were obviously down-regulated after intervention of TFB (1.0, 0.5, 0.25 mg/mL), with statistical difference (P < 0.05, P < 0.01).
  
  
  CONCLUSIONS
  TFB could protect vascular damage by inhibiting in vivo high expression of NF-κB, reducing the production of IL-8, TNF-α, and NO in vascular endothelial cells of HSP children patients.
authors.forename: Wen-jun
authors.initials: WJ
authors.lastname: Fei
authors.forename: Li-ping
authors.initials: LP
authors.lastname: Yuan
authors.forename: Ling
authors.initials: L
authors.lastname: Lu
authors.forename: Jin-gui
authors.initials: JG
authors.lastname: Gui
mesh_terms: D031176:Bidens / Q000737:chemistry*; D002648:Child; D047309:Flavones / Q000494:pharmacology*; D061307:Human Umbilical Vein Endothelial Cells / Q000187:drug effects*; D006801:Humans; D011695:IgA Vasculitis / Q000097:blood*; D007070:Immunoglobulin A / Q000097:blood*; D018799:Intercellular Adhesion Molecule-1 / Q000378:metabolism; D016209:Interleukin-8 / Q000378:metabolism; D016328:NF-kappa B / Q000378:metabolism; D009569:Nitric Oxide / Q000378:metabolism; D012333:RNA, Messenger / Q000378:metabolism; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D047309:Flavones; D007070:Immunoglobulin A; D016209:Interleukin-8; D016328:NF-kappa B; D012333:RNA, Messenger; D014409:Tumor Necrosis Factor-alpha; D018799:Intercellular Adhesion Molecule-1; D009569:Nitric Oxide