氢饱和生理盐水对大鼠重症急性胰腺炎肺损伤的保护作用

目的：探讨静脉注射氢饱和生理盐水（HRS）对牛磺胆酸钠诱导的大鼠重症急性胰腺炎相关性肺损伤（APALI）是否具有保护作用及其可能的机制。方法将54只健康SD雄性大鼠分成假手术组（Sham组）、模型组（SAP＋ NS组）和 HRS处理组（S A P＋ H RS组），各组再按时间点每个亚组分成6、12、24 h 3个亚组，每个时间点处死6只大鼠。收集血清、肺组织及胰腺组织。检测血清TNF‐α、IL‐1β水平；肺组织湿干质量比；测定肺组织中 TNF‐α、IL‐1βmRNA的表达；并对胰腺组织、肺组织损伤进行病理学评价。结果（1）SAP＋ NS组和SAP＋ HRS组血清中 TNF‐α、IL‐1β水平、胰腺和肺组织病理评分、肺组织 TNF‐α、IL‐1βmRNA的表达，肺组织湿干质量比在6、12、24 h各个时间点均高于Sham组（P＜0．05）。（2）SAP＋ HRS组与SAP＋ NS组比较，SAP＋ HRS组血清TNF‐α水平、肺组织TNF‐αmRNA的表达、肺组织湿干质量比在各个时间点均低于SAP＋ NS组（均P＜0．05）。血清IL‐1β水平、胰腺和肺组织病理评分、肺组织中IL‐1βmRNA表达在6 h时两组间差异无统计学意义（P＞0．05），但在12、24 h时SAP＋ HRS组低于SAP＋NS组（均 P＜0．05）。结论 HRS可能是通过其选择性抗氧化作用抑制了氧化应激损伤相关细胞因子表达来实现对APALI的保护。

Protective effect of hydrogen-rich saline solution on lung injury in rats with severe acute pancreatitis

Objective To explore whether intravenous injection of hydrogen‐rich saline having the protective effect on sodium taurocholate induced severe acute pancreatitis(SAP) associated lung injury(APALI) in rats and its possible mechanisms .Methods Fifty‐four healthy male SD rats were randomly divided into sham‐operation group (Sham group) ,model group (SAP+ NS group) and hydrogen water treatment group (SAP + HRS group) ,and each group was subdivided into 6 ,12 ,24 h subgroups .Six rats were killed at each time point for collecting serum ,lung tissue and pancreas tissue .Serum TNF‐αand IL‐1βlevels ,lung wet /dry weight ratio ,expression of TNF‐αmRNA and IL‐1βmRNA in the lung tissue were detected .The pathological evaluation of pancreas and lung tissue injury was performed .Results (1)The levels of TNF‐α and IL‐1β in serum ,pancreas and lung tissue pathological scores ,TNF‐αmRNA and IL‐1βmRNA expression levels in the lung tissue and lung wet dry weight ratio at the time points of 6 , 12 ,24 h in the SAP+NS group and the SAP+ HRS group were higher than those in the sham group (P<0 .05) .(2) Compared with the SAP+NS group ,the levels of serum TNF‐α,TNF‐αmRNA expression level in the lung tissue and lung wet dry weight ra‐tio at all time points in the SAP+ HRS group were lower(P<0 .05);the levels of serum IL‐1β,pancreas and lung tissue pathologi‐cal score and IL‐1β‐mRNA expression at 6 h in the lung tissue had no statistical difference between the SAP+NS group and SAP+HRS group ,but which at time points of 12 ,24 h in the SAP+ HRS group were lower than those in the SAP+NS group(P<0 .05) . Conclusion HRS realize the protection on APALI possibly via its elective anti‐oxidation action for inhibiting oxidative stress injury related cytokines expression .