生长激素对酸吸入性肺损伤大鼠肺组织细胞凋亡的作用

被引:4
作者
黎檀实
尹明
吴旭辉
宋杨丽
沈洪
机构
[1] 解放军总医院急诊科
[2] 海军总医院心内科
关键词
细胞凋亡; 肺损伤; 生长激素; 盐酸;
D O I
暂无
中图分类号
R563.9 [其他];
学科分类号
摘要
目的 :观察生长激素 (GH )对盐酸吸入性急性肺损伤 (AL I)大鼠肺组织修复的作用机制。方法 :建立大鼠盐酸吸入性 AL I模型 ,84只大鼠随机分为生理盐水对照组 (NS组 )、盐酸损伤组 (HCl组 )、盐酸损伤 +生长激素干预组 (GH组 )。通过原位细胞检测技术评估肺组织细胞凋亡 ;用放射免疫方法检测大鼠血浆胰岛素样生长因子 1(IGF 1)、肿瘤坏死因子 α(TNFα)、白介素 8(IL 8)水平。结果 :经气道吸入盐酸可导致大鼠肺损伤 ,肺组织细胞凋亡现象明显 ,血浆 TNFα、IL 8水平均显著增高 ,注入盐酸后 0 .5小时 HCl组血浆TNFα和 IL 8分别为 (2 .17± 0 .4 1)μg/L和 (0 .91± 0 .0 8)μg/L ,GH组分别为 (3.14± 0 .2 8)μg/L和(0 .6 8± 0 .19)μg/L ,与 NS组比较均有显著性差异 (P<0 .0 5或 P<0 .0 1) ;GH组血浆 IGF 1水平明显高于HCl组〔(12 8.36± 30 .5 6 )μg/L比 (14 .19± 7.89)μg/L ,P <0 .0 5〕,肺组织细胞凋亡率明显低于 HCl组〔(16 .83± 3.0 3) %比 (2 0 .89± 1.36 ) % ,P<0 .0 5〕。结论 :盐酸吸入性 AL I大鼠肺组织细胞存在明显的凋亡现象。TNFα和 IL 8在 AL I肺组织细胞凋亡中起一定作用 ;血浆 IGF 1水平升高有利于肺组织的修复 ;生长激素对酸吸入性肺损伤大鼠肺组织细胞有明显的抗凋亡作用。
引用
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页码:728 / 731
页数:4
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