严重烧伤小鼠肝细胞IFITI表达与凋亡的关系

Zhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences(2015)

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Abstract
目的:探讨严重烧伤急性应激期干扰素诱导含TPR基序的蛋白1 (interferon-induced protein with tetratricopetide repeats 1,IFIT1)表达与肝细胞凋亡的关系.方法:健康C57/129小鼠25只,随机分成5组,每组5只:正常对照(0 h)组、烧伤后1,6,12和24 h组.制作烧伤组大鼠20%总体表面积(total body surface area,TBSA) Ⅲ度烧伤模型.取肝组织,Western印迹观察IFIT1表达;免疫组织化学检测caspase-3和caspase-8表达;脱氧核糖核苷酸末端转移酶介导的缺口末端标记法(terminal deoxynucleotidyl transferase mediated nick end labeling,TUNEL)检测肝细胞凋亡.结果:IFIT1烧伤后1h开始增高,6h最高,12h开始降低,24 h降至最低,组间比较差异有统计学意义(P<0.01);caspase-3和caspase-8烧伤后随时间逐渐增高,组间比较差异有统计学意义(P<0.01);TUNEL法显示烧伤后肝细胞凋亡1h与0h比较差异无统计学意义(P>0.05),6h至24 h呈逐渐增高,组间比较差异有统计学意义(P<0.01).结论:严重烧伤后IFIT1表达增高可促使肝细胞凋亡的增强.
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Key words
burn injury,interferon-induced protein with tetratricopetide repeats 1,caspase-3,caspase-8
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