期刊文献+

细胞外调节蛋白激酶在大鼠内毒素急性肺损伤中的作用

Role of extracellular regulated kinase pathway in the lipopolysaccharide-induced acute lung injury in rat
原文传递
导出
摘要 目的 探讨细胞外调节蛋白激酶(extracellular signal-regulated kinases, ERK)信号通路在大鼠内毒素(lipopolysaccharide, LPS)性急性肺损伤(acute lung injury, ALI)中的作用。 方法 120只健康成年雄性SD大鼠按随机数字表法随机分为4组(每组30只):生理盐水组(Saline组), LPS组, LPS+U0126组(LPS+U组), 生理盐水+U0126组(Saline+U组)。其中各组又按照不同的时间点被分为1、3、6、12、24 h 5个亚组。参照文献及预实验,LPS组采用腹腔注射LPS 7.5 mg/kg(5 g/L)制作LPS性ALI模型,Saline组注射等体积的生理盐水。LPS+U组和Saline+U组在注射LPS或生理盐水前30 min,经腹腔注射U0126 5 mg/kg。利用Western blot检测大鼠肺组织中的磷酸化的ERK、高迁移率族蛋白B1(high-mobility group box 1, HMGB-1),胞核内的核转录因子-κB(nuclear factor-κB, NF-κB)p65的表达。同时检测支气管肺泡灌洗液(bronchoalveolar lavage fluid, BALF)中肿瘤坏死因子-α(tumor necrosis factor, TNF-α)、诱导型一氧化氮合酶(inducible nitric oxide synthase, iNOS)和白介素(interleukin, IL)-10的浓度,肺脏水含量以及肺组织病理学的变化。 结果 注射LPS后, 大鼠肺组织中磷酸化的ERK、HMGB?蛳1明显增多,同时核内NF?蛳κBp65的表达在3 h和12 h明显升高。BALF中的TNF-α、iNOS和 IL-10的浓度也随之升高,肺水含量上升,组织病理学检查显示:肺组织出现明显的病理损害。使用U0126能明显抑制ERK的磷酸化、NF-κB的活化及HMGB-1的表达,肺水含量下降[(4.59±0.51) vs (5.19±0.10), P〈0.05)],BALF中TNF-α、iNOS和 IL-10的浓度显著降低[TNF-α,3 h达高峰,(28±3) vs (70±10), P〈0.05; iNOS,12 h达高峰,(7 771±957) vs (10 679±1 641), P〈0.05; IL-10,6 h达高峰,(59±10) vs (91±11), P〈0.05], 同时肺组织的病理损害也明显减� bjective To investigate the role of extracellular signal-regulated kinases(ERK) signal pathway in the lipopolysaccharide(LPS)-induced acute lung injury(ALI) in rats. Methods One hundred and twenty male SD rats were randomly divided into four groups(n=30): Saline group, LPS group, LSP+U group and Saline+U group. Each group was divided into five subgroups at 1, 3, 6, 12 h and 24 h time point respectively. Western blot was used to detect the expression of phosphorylation of ERK1/2 and high-mobility group box 1(HMGB-1) in lung tissues, nuclear factor-κB(NF-κB)p65 in the nuclear extracts, which reflected the extent of lung injury. Additionally we examined the concentration of tumor necrosis factor(TNF)-α, interleukin(IL)-10 and inducible nitric oxide synthase(iNOS) in bronchoalveolar lavage fluid(BALF), the lung water content and the histopathologic changes of lung. In addition, survival rate was investigated between LPS group and LSP+U group,and each group with other 10 rats. Results With the administration of LPS, the phospho?蛳ERK1/2 substantially increased immediately and subsequently the expression of NF?蛳κB in the nuclear extracts was increased significantly and reached its peak level at 3 h and 12 h. Moreover, HMGB-1, one of the key mediators in the development of sepsis increased significantly after LPS administration. The concentrations of TNF?蛳α,iNOS and IL-10 were also increased. Pathological examination showed that the normal structure of lung was destroyed badly after LPS injection. U0126 effectively inhibited the activation of ERK1/2, blocked LPS-induced NF-κB activation and HMGB-1 expression in lung tissue, reduced the lung water content[(4.59±0.51) vs (5.19±0.10), P〈0.05], the concentration of TNF-α, iNOS and IL-10[TNF-α, reached a peak at 3 h,(28±3) vs (70±10)(P〈0.05). iNOS, reached a peak at 12 h, (7 771±957) vs (10 679±1 641),P〈0.05. IL-10,reached a peak at 6 h,(59±10) vs(91±11), P〈
出处 《国际麻醉学与复苏杂志》 CAS 2014年第4期324-330,345,共8页 International Journal of Anesthesiology and Resuscitation
基金 国家自然科学基金项目(8120056)
关键词 细胞外调节蛋白激酶 核转录因子-ΚB 急性肺损伤 肿瘤坏死因子-Α Extracellular signal-regulated kinases; Nuclear factor-κB; Acute lung injury; Tumor necrosis factor-α; Interleukin-10; Inducible nitric oxide synthase; Lipopolysaccharide
  • 相关文献

参考文献24

  • 1Zimmerman JJ, Akhtar SR, Caldwell E, et al. Incidence and outcomes of acute lung injury [J]. N Engl J Med, 2006, 354(4): 416-417. 被引量:1
  • 2Wang HM, Bodenstein M, Markstaller K. Overview of the pathology of three widely used animalmodels of acute lung injury [J]. Eur Surg Res, 2008,40(4): 305-316. 被引量:1
  • 3Ware LB, Matthay MA. The acute respiratory distress syndrome [J]. N Engl J Med, 2000, 34(2): 1334-1349. 被引量:1
  • 4Chen W, Garcia JG, Jacobson JR. Integrin 134 attenuates SHP-2 and MAPK signaling and reduces human lung endothelial inflanunatory responses[J]. J Cell Biochem, 2010, 110(3): 718-724. 被引量:1
  • 5Schuh K, Pahl A. Inhibition of the MAP kinase ERK protects from lipopolysaccharide -induced lung injury [J]. Biochem Pharmaool , 2009, 77(12): 1827-1834. 被引量:1
  • 6Di Paola R, Galuppo M, Mazzon E. PD98059, a specific MAP kinase inhibitor, attenuates multiple organ dysfunction syndrome/ failure (MODS) induced by zymosan in mice[J]. Pharmacol Res, 2010, 61(2): 175-187. 被引量:1
  • 7Lee PJ, Zhang X, Shan P, et al. ERK1/2 mitogen - activated protein kinase selectively mediates IL-13-induced lung inflammation and remodeling in vivo[J]. J Clin Invest, 2006, 116(1): 163-173. 被引量:1
  • 8Nash SP, Heuertz RM. Blockade of p38 map kinase inhibits complement-induced acute lung injury in a murine model [J]. Int Immunopharmacology, 2005, 5( 13): 1870-1880. 被引量:1
  • 9Favata MF, Horiuchi KY, Manos EJ, et al. Identification of a novel inhibitor of mitogen -activated protein kinase kinase [J]. J Biol Chern, 1998, 273 (29) : 18623 - 18632. 被引量:1
  • 10Foey AD, Parry SL, Williams LM, et al. Regulation of monocyte IL -10 synthesis by endogenous IL -1 and TNF -alpha. role of the p38 and p42/44 mitogen-activated protein kinasee[J]. J Immunol , 1998, 160(2): 920-928. 被引量:1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部