丙泊酚预处理对大鼠肢体缺血再灌注损伤的影响

目的：观察丙泊酚对大鼠肢体缺血再灌注损伤的影响。方法选择健康成年雄性 SD 大鼠60只，分为假手术组、缺血再灌注组、丙泊酚药物组，每组20只，各组又根据再灌注时间分成4个亚组。复制大鼠经典右下肢缺血再灌注模型，恢复血流灌注前5 min 用丙泊酚注射液（50 mg／kg ，腹腔注射）处理，分别于再灌注后3、6、9、12 h 进行取材，检测血清样本中肿瘤坏死因子-α（TNF-α）、核因子κB（NF-κB）水平、肌肉组织中丙二醛（MDA）、超氧化物歧化酶（SOD）的水平，以及计算肌肉湿干质量比值。结果恢复灌注后各时间段内，相对于缺血再灌注组，丙泊酚处理后能降低 TNF-α、NF-κB 的表达水平（ P ＜0．05），抑制组织MDA 水平增加（P＜0．05），抑制 SOD 水平的减少（P＜0．05），也明显减轻肌肉组织的水肿（P＜0．05）。结论丙泊酚预处理可通过遏制炎症因子表达、减轻氧自由基损害从而对缺血再灌注肢体具有保护作用。

Protective effect of propofol preconditioning on limb ischemia reperfusion injury in rats

Objective To investigate the effect of propofol on rat′s limb ischemia reperfusion injury .Methods Sixty healthy SD rats were randomly divided into sham operate group ,ischemia-reperfusion group and propofol group (n= 20) ,each group was divided into 4 subgroups according to the different reperfusion time .To copy the right lower limb ischemia reperfusion model ,5 min before reperfusion ,use propofol injection (50 mg/kg ,intraperitoneal inject) ,various subjects in the corresponding time points (3 ,6 , 9 ,12 h) were sacrificed .TNF-α ,NF-κB of blood and MDA ,SOD of Skeletal muscle were measured ,calculate muscle wet dry weight ratio .Results Compared with ischemia reperfusion group ,propofol could significantly reduce expression of TNF-alpha ,NF-κB lev-els in serum (P< 0 .05) ,inhibit the increase of the MDA level and decrease of the SOD level in muscle (P< 0 .05) ,also reduce the extent of skeletal muscle cell edema(P< 0 .05) .Conclusion Propofol can attenuate limb ischemia reperfusion injury by inhibiting inflammation response and reducing the oxygen free radicals′ damage .