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MODS大鼠外周血单个核细胞内核因子-κB和过氧化物酶体增殖物激活受体-γ的表达
孙艺铸,王静,戴琳,于鲁欣
孙艺铸、王静、于鲁欣,山东,烟台毓璜顶医院ICU,264000;戴琳,烟台烟台山医院心电图室

摘要:目的 探讨多器官功能障碍综合征(MODS)大鼠外周血单个核细胞(PBMC)内核因子-κB(NF-κB)和过氧化物酶体增殖物激活受体-γ(PPARγ)的表达及相互关系。方法 健康雄性SD大鼠40只,随机分为四组(每组10只),正常对照组,脂多糖(LPS)刺激组,罗格列酮(ROSI)预处理组,选择性拮抗剂2-氯-5-硝基苯胺(GW9662)预处理组。免疫细胞化学法检测PBMC内PPARγ、NF-κB p65的表达活性,并进行图像分析。结果 (1)在正常组大鼠PBMC内NF-κB p65、PPARγ表达均较少。LPS刺激组NF-κB p65表达与正常组比较显著增加(P<0.01);PPARγ表达稍有增高,与正常组比较差异无统计学意义(P>0.05)。ROSI组NF-κB p65表达与LPS刺激组比较显著降低(P<0.01);PPARγ表达与LPS刺激组比较显著增加(P<0.01)。GW9662组NF-κB p65表达与LPS刺激组比较差异无统计学意义(P>0.05);PPARγ表达显著降低,与正常组比较差异无统计学意义(P>0.05)。(2)相关分析结果表明,PBMC内NF-κB和PPARγ活性变化在LPS刺激组、ROSI组、GW9662组呈显著负相关(LPS刺激组:r=-0.916,P<0.01;ROSI组:r=-0.605,P<0.05;GW9662组:r=-0.961,P<0.01)。在正常对照组无明显相关性(r=0.185,P>0.05)。结论 PPARγ可能是通过抑制NF-κB的活性而对MODS大鼠起保护作用。

关键词:

多器官功能衰竭;脂多糖类;噻唑烷二酮类;NF-κB;过氧化物酶体增殖物激活受体;大鼠,Sprague-Dawley

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文献标引:孙艺铸,王静,戴琳,于鲁欣.MODS大鼠外周血单个核细胞内核因子-κB和过氧化物酶体增殖物激活受体-γ的表达.中华临床医师杂志(电子版),2008,2(4):440-446.  

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