国际麻醉学与复苏杂志   2015, Issue (9): 10-10
    
乌司他丁对脓毒症大鼠膈肌损伤及生存率的影响
张海霞, 丁仲诺, 毛燕飞, 江来1()
1.上海交通大学医学院附属新华医院麻醉与重症医学科,上海交通大学医学院附属新华医院崇明分院麻醉科
The effect of ulinastatin on diaphragmatic injury and survival rate among rats with sepsis
 全文:
摘要:

目的 本研究拟观察乌司他丁(ulinastatin, UTI)对脓毒症大鼠膈肌收缩功能、膈肌组织炎性因子和氧化应激指标以及生存率的影响。 方法 54只清洁级健康雄性Sprague-Dawley(SD)大鼠按完全随机分组法分成3组:假手术组(A组)、盲肠结扎穿孔(cecal ligation and puncture, CLP) 组(B组)、CLP+UTI组(C组);将其中30只SD大鼠按上述分组,每组 10 只,观察7 d生存率;余下24只大鼠按上述分组,每组8只,于术后24 h时取膈肌组织,检测膈肌收缩功能,促炎因子肿瘤坏死因子(tumor necrosis factor, TNF)-α 、白细胞介素(interleukin, IL)-6 和氧化应激指标丙二醛(malondialdehyde, MDA)、超氧化物歧化酶(superoxide dismutase, SOD)的含量。 结果 B组大鼠7 d生存率较A组明显降低(20%比100%)(P<0.05),而UTI治疗可显著改善CLP大鼠生存率(60%比20%)(P<0.05)。C组大鼠膈肌在各个频率刺激下的张力及最大强直肌力明显高于B组(P<0.01)。C组与B组比较,促炎因子 TNF-α[(6.4±1.8)、(10.4±1.9) ng/g]和 IL-6[(55±8)、(81±9) ng/g]水平显著降低,氧自由基MDA含量[(15.6±3.6)、(21.3±4.5) μmol/g]显著降低,SOD[(460±57)、(405±32) ng/g]消耗明显减少,差异有统计学意义(P<0.05)。 结论 应用 UTI治疗可改善脓毒症大鼠膈肌收缩功能,可能与其降低膈肌组织促炎因子 TNF-α和 IL-6 水平,并减少膈肌内氧自由基MDA的释放、降低SOD的消耗有关; UTI治疗可明显提高脓毒症大鼠的生存率。

关键词: 脓毒症; 盲肠结扎穿孔; 膈肌; 乌司他丁
Abstract:

Objective To investigate the effect of ulinastatin(UTI) on diaphragmatic contractile function,inflammatory cytokines,oxidative stress parameters and survival rate variation among rats with spesis. Methods Fifty-four male Sprague-Dawley(SD) rats were randomly assigned into three groups: Sham-operated group(group A), cecal ligation and puncture(CLP) group(group B), CLP+UTI group(group C). Following above method, 30 rats were divided into three groups(n=10) and observed for 7 d survival rate. And also 24 rats were divided into three groups(n=8), after 24 h of operation, the diaphragm was removed for diaphragm contractile function test, and the content of pro-inflammatory cytokines tumor necrosis factor(TNF)-α, interleukin(IL)-6 oxidative stress indexes of malondialdehyde(MDA), superoxide dismutase(SOD) were detected. Results 7 d survival in group B was significantly lower than that in group A(20% vs 100%)(P<0.05), and UTI treatment could improve the survival on CLP rats(60% vs 20%)(P<0.05). Diaphragmatic contractility at each frequency of stimulation and maximum tetanic force of the rats in UTI treatment group was significantly higher than that in group B(P<0.01). UTI treatment group compared with group B, pro-inflammatory cytokines TNF-α[(6.4±1.8),(10.4±1.9) ng/g] and IL-6[(55±8),(81±9) ng/g] level were significantly decreased(P<0.05),the content of MDA[(15.6±3.6),(21.3±4.5) μmol/g] decreased significantly(P<0.05) and SOD[(460±57),(405±32) ng/g] consumption was also significantly reduced(P<0.05). Conclusions UTI treatment can improve diaphragmatic contractility in sepsis rats. This may be associated with the drop of TNF-α and IL-6 and the reduction of MDA release and SOD consumption. And also,UTI treatment can significantly improve the survival of the rats with sepsis.

Key words: Sepsis; Cecal ligation and puncture; Diaphragm; Ulinastatin