The CLP and CASP model as important research tools have been widely utilized in septic OS. In this study, we compare the oxidative stress condition of CLP and CASP rat models. Compared with sham operation group, infec...The CLP and CASP model as important research tools have been widely utilized in septic OS. In this study, we compare the oxidative stress condition of CLP and CASP rat models. Compared with sham operation group, infection condition and oxidative stress index were significantly different in CLP and CASP groups. Compared with CLP group, there was no significant difference in natural death rate, bacterial colony positive rate, infection condition, center venous oxygen saturation, and serum levels of TNF-αin the CASP group;whereas, MDA decreased significantly at 72 hours, T-SOD increased considerably at 12 and 72 hours after operation in the CASP group. The serum NO significantly decreased at all time-points except at 12 hours post-operation. Together, our study demonstrated the similarity of oxidative stress condition between CLP and CASP models. However, CASP rats had higher serum NO level than CLP rats.展开更多
目的建立小鼠脓毒症模型并进行评价,为研究脓毒症致病机制和开发抗炎药物提供模型动物。方法采用盲肠结扎穿孔法(cecal ligation and puncture,CLP)诱导小鼠脓毒症,通过动物生存、术后小鼠载菌量、血常规和血生化指标、细胞因子水平、...目的建立小鼠脓毒症模型并进行评价,为研究脓毒症致病机制和开发抗炎药物提供模型动物。方法采用盲肠结扎穿孔法(cecal ligation and puncture,CLP)诱导小鼠脓毒症,通过动物生存、术后小鼠载菌量、血常规和血生化指标、细胞因子水平、组织病理变化等方面对模型进行评价。结果小鼠的死亡率与盲肠结扎部位密切相关,盲肠结扎50%小鼠12 d存活率在40%左右,结扎75%小鼠4 d全部死亡(P<0.01)。与假手术组相比,50%结扎CLP小鼠血液和腹腔中载菌量增加,白细胞下降,差异有显著性(P<0.001)。CLP小鼠肝转氨酶ALT、AST和血清尿素氮BUN水平升高,差异具有显著性(P<0.01),炎症因子IL1α、IL6、IL10、MIP1α、MIP1β、TNFα水平升高。手术后48 h小鼠的肝和肺出现明显组织病理损伤。结论小鼠CLP模型具有典型的脓毒症病理特征,为后期研究抗炎药物的筛选提供了较好的动物模型。展开更多
文摘The CLP and CASP model as important research tools have been widely utilized in septic OS. In this study, we compare the oxidative stress condition of CLP and CASP rat models. Compared with sham operation group, infection condition and oxidative stress index were significantly different in CLP and CASP groups. Compared with CLP group, there was no significant difference in natural death rate, bacterial colony positive rate, infection condition, center venous oxygen saturation, and serum levels of TNF-αin the CASP group;whereas, MDA decreased significantly at 72 hours, T-SOD increased considerably at 12 and 72 hours after operation in the CASP group. The serum NO significantly decreased at all time-points except at 12 hours post-operation. Together, our study demonstrated the similarity of oxidative stress condition between CLP and CASP models. However, CASP rats had higher serum NO level than CLP rats.
