基础医学与临床 ›› 2012, Vol. 32 ›› Issue (1): 61-65.

• 研究论文 • 上一篇    下一篇

NF-κB 在TNF-α抗体治疗大鼠肝肺综合征中的作用

刘丽1,冯英梅2,2,刘楠2,2,赵芝2,2   

  1. 1. 河北医科大学第二医院
    2.
  • 收稿日期:2010-12-27 修回日期:2011-06-10 出版日期:2012-01-05 发布日期:2011-12-28
  • 通讯作者: 刘丽 E-mail:loraliu@163.com
  • 基金资助:
    河北省医学科学研究重点课题

The effects of NF-κB in treating hepatopulmonary syndrome in rats with tumor necrosis factor-α monoclonal antibody

  • Received:2010-12-27 Revised:2011-06-10 Online:2012-01-05 Published:2011-12-28
  • Contact: li LIU E-mail:loraliu@163.com

摘要: 目的:探讨 TNF-α单克隆抗体(TNF-αMcAb)对肝肺综合征(HPS)大鼠NF-κB表达的影响及NF-κB在TNF-α单克隆抗体治疗大鼠肝肺综合症中的作用。方法: 采用胆总管结扎(CBDL)建立大鼠HPS模型,通过腹腔注射抗TNF-αMcAb(0.1mg/kg.2d)治疗HPS,观察肺组织病理变化;检测血浆TNF-α、内毒素水平及肺组织NF-κB蛋白表达;进行血气分析,计算肺泡-动脉氧分压梯度差;结果:TNF-αMcAb干预后肺组织的炎症和毛细血管扩张明显减轻,肺泡-动脉氧分压梯度差明显减少(P<0.05),血浆内毒素、TNF-α的水平较胆总管结扎组明显减低(P<0.05)。肺组织NF-κB 蛋白表达水平显著下降(P<0.05)。 结论: TNF-α单克隆抗体可部分改善大鼠肝肺综合征的严重程度并抑制NF-κB的表达,TNF-α单克隆抗体可能通过抑制NF-κB的表达治疗肝肺综合症。

关键词: 肿瘤坏死因子-α, 肿瘤坏死因子-α单克隆抗体, 肝肺综合征, 核转录因子-κB

Abstract: AIM: To study the effects of tumor necrosis factor-α monoclonal antibody on the expression of NF-κB on hepatopulmonary syndrome in rats. and the effects of NF-κB in treating hepatopulmonary syndrome in rats with tumor necrosis factor-α monoclonal antibody. METHODS: The experimental models of HPS in rats were built with commom bile duct ligation, and then were injected with TNF-αMcAb (0.1mg/kg.2d)intraperitoneally, Lung histopathological changes were evaluated by hematoxylin and eosin staining; TNF-α concentration in plasma was measured by radioimmunity method ; The endotoxin in the plasma was checked by tachypleus amebocyte lysate kit; Hepatopulmonary syndrome was assessed by measurements of alveoloarterial oxygen difference (P(A-a)O2) . Western blot was employed to investigate the expression and the changes of NF-κB in hepatopulmonary rat lungs. RESULTS: Compared with the CBDL group, there was a gentle vasodilatation and widen interalveolar septum in lung in TNF-α McAb treament group, the level of the P(A-a)O2 was significantly lower (p<0.05). The concentration of ETX and TNF-α were significantly lower(p<0.05). The expression of NF-κB in CBDL+TNF-α McAb group decreased obviously than those in CBDL group(p<0.05). CONCLUSIONS: Tumor necrosis factor-α antibody can attenuate the severity of hepatopulmonary syndrome in rats and reduce activation of NF-κB, Tumor necrosis factor-α antibody can attenuate the severity of hepatopulmonary syndrome through downregulateing the expressiion of NF-κB.

Key words: TNF-α, TNF-α-McAb, hepatopulmonary syndrome, NF-κB

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