氢气对吸入性损伤大鼠急性肺损伤的保护作用及量效研究

被引:7
作者
刘琪 [1 ]
王大为 [1 ]
陈兴 [2 ]
刘群 [2 ]
机构
[1] 天津医科大学研究生院
[2] 天津市第四医院烧伤科
关键词
吸入性损伤; 急性肺损伤; 氢气饱和生理盐水; 量效关系; 大鼠;
D O I
10.20135/j.issn.1006-8147.2013.06.004
中图分类号
R644 [烧伤及烫伤(灼伤)];
学科分类号
100227 [皮肤病学];
摘要
目的:探讨不同剂量氢气饱和生理盐水(HS)对烟雾吸入性损伤大鼠急性肺损伤的保护作用。方法:30只SD大鼠随机分为5组:对照组(C)、吸入性损伤组(I)、氢气饱和生理盐水低剂量组(2.5 mL/kg,HS L)、中剂量组(5 mL/kg,HS M)、高剂量组(10 mL/kg,HS H),24 h后留取标本,透射电镜观察肺组织病理变化,检测血清中肿瘤坏死因子α(TNF-α),肺组织匀浆的丙二醛(MDA)含量,免疫组织化学法测定肺组织核因子-κBp65(NF-κBp65)的表达,TUNEL检测肺组织凋亡情况。结果:中、高剂量氢气饱和生理盐水能明显减轻吸入性损伤大鼠的急性肺损伤,降低炎性因子(TNF-α)的释放,减轻组织氧化损伤(MDA低于致伤组),抑制肺组织NF-κBp65的活化及细胞凋亡,且HS H优于HS M,HS M、HSH组间差异有统计学意义(P<0.05),而HS L组效果不明显。结论:氢气饱和生理盐水可减轻吸入性损伤大鼠的急性肺损伤,且存在一定的量效关系。
引用
收藏
页码:445 / 448
页数:4
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