摘要
目的探讨乌司他丁对心搏骤停-心肺复苏大鼠心脏的保护效应及改善心功能不全的机制。方法随机将20只SD大鼠分为3组:假手术组(不进行窒息及心肺复苏,仅进行麻醉和气管切开插管、血管穿刺;A组n=8);对照组(静脉注射生理盐水4mL·kg-1;B组n=6);考察组(乌司他丁5万U·kg-1+生理盐水3mL·kg-1,5万U配制成1mL;C组n=6);采用实验设计模型考察大鼠复苏前后实验设定时间段白细胞介素-12(IL-12)、心肌肌钙蛋白T(cTNT)、肿瘤坏死因子-α(TNF-α)、脑钠肽(BNP)、平均动脉压(MAP)、左室内压最大上升和下降速率(±LVdp.dt-1max)及左室舒张末压(LVEDP)的变化。结果与A组及复苏前比较,B、C组复苏后6hIL-12、cTNT、TNF-α、BNP、LVEDP等均有不同程度升高(P<0.01),而±LVdp.dt-1max值降低(P<0.01);与B组比较,C组复苏后6hIL-12、cTNT、TNF-α、BNP、LVED值低于B组,而±LVdp.dt-1max值高于B组(P<0.01);B组复苏后6hMAP值低于复苏前、同时间A组和C组(P<0.01)。结论乌司他丁可抑制炎症介质释放,减轻心搏骤停-心肺复苏实验大鼠心肌损伤,从而改善心搏骤停-心肺复苏实验大鼠心脏功能不全。
Objective To investigate the protective effects of ulinastatin on the hearts of rats with anoxia-induced cardiac arrest-cardiopulmonary resuscitation(CA-CPR) and the mechanism of improving cardiac dysfunction .Methods Twenty male Sprague Dawley(SD) rats were randomly divided into three experimental groups :sham operation group (group A ,n= 8 ,only anesthesia , tracheotomy tube and vascular puncture) ,control group(group B ,n= 6 ,normal saline 4 mL · kg -1 injected via vein) ,Ulinastatin treatment group(group C ,n=6 ulinastatin 50 000 U/kg+normal saline 3 mL · kg -1 injected via vein);Factors including mean arte-rial pressure(MAP) ,left ventricular end diastolic pressure(LVEDP) ,the maximum rising and falling rates of left ventricular deep pressure(± LVdp .dt-1max) ,brain natriuretic peptide(BNP) ,cardiac troponin T(cTNT) ,IL-12 and TNF-αwere observed at setting time before and after cardiopulmonary resuscitation in rats .Results Compared with those of the group A and before CA-CPR ,the concentrations of IL-12、cTNT、TNF-α、BNP、and LVEDP increased(P〈0 .01)while ± LVdp .dt-1max decreased(P〈0 .01) at 6 h after CA-CPR in group B ,C .Compared with those of group B ,the concentrations of IL-12、CTNT、TNF-α、BNP and LVEDP of 6 h after CA-CPR in group C were lower and ± LVdp .dt-1max was higher(P〈0 .01) ,The concentrations of MAP of 6 h after CA-CPR in group B was lower Compared with that of group A ,C and before CA-CPR(P〈0 .01) .Conclusion Ulinastatin can improve cardiac dysfunction by depressing mediators of inflammation and reducing myocardial injury .
出处
《重庆医学》
CAS
CSCD
北大核心
2013年第29期3515-3517,共3页
Chongqing medicine
基金
贵州省科技攻关项目(黔科合S字[2007]1055)
贵州省科技厅资助
贵州省省长基金资助课题(黔省专合字[2007]66号)
关键词
乌司他丁
心肺复苏术
细胞因子类
心脏功能试验
ulinastatin
cardiopulmonary resuscitation
cytokines
heart function tests