大黄附子汤对重症急性胰腺炎肺损伤大鼠肺泡上皮屏障功能的影响

目的 探讨大黄附子汤对重症急性胰腺炎肺损伤大鼠肺上皮屏障功能的影响及意义.方法 96只SD大鼠随机分为假手术组、重症急性胰腺炎肺损伤组(SAP-ALI组)及大黄附子汤组三组,每组32只.各组再按3,6,12,24 h时间点分为四个亚组,每个亚组各8只.假手术组开腹后行空肠造瘘,翻动胰腺数次后关腹;SAP-ALI组在假手术组基础上经胰胆管逆行注入4%牛磺胆酸钠(1mL/kg),建立重症急性胰腺炎急性肺损伤模型;大黄附子汤组在SAP-ALI组基础上经空肠造瘘管注入大黄附子汤10 mL.各组按时间点分别于伤后3,6,12,24 h测定肺泡上皮通透性(AEP)、肺泡内液体清除率(ALCR)、总肺水量(TLW)和肺血管外肺水量(EVLW),同时测定血浆内毒素(ET)、血清淀粉酶含量,光镜下观察肺脏病理组织学变化.结果 与假手术组比较,SAP-ALI组大鼠术后3,6,12,24 h ALCR显著降低,TLW,EVLW及AEP呈明显升高趋势(P＜0.05或P＜0.01).与SAP-ALI组比较,大黄附子汤组对大鼠术后3,6,12,24 h ALCR均显著升高,TLW,EVLW及AEP呈明显降低趋势(P＜0.05或P＜0.01),且肺组织的水肿、出血、炎症程度及肺损伤学评分和肺湿/干重比均明显好转.结论 重症急性胰腺炎并急性肺损伤大鼠存在严重的肺泡上皮屏障功能障碍;大黄附子汤通过抑制内毒素过度释放,可降低炎症反应,改善肺泡上皮功能障碍,减轻肺损伤程度.

Abstract：

Objective To investigate effect of Dahuang Fuzi decoction on alveolaur epithelial barrier in rats with lung injury with severe acute pancreatitis. Method Ninty-six health SD rats were randomly divided into three groups: sham operation group, SAP-ALI group, Dahuang Fuzi decoction group, and then according to the time point of sacrifice after operation, each group was subdivided into 3,6,12,24 hour subsets ( each, n = 8). After the belly of a rat in the sham operation group was cut open, the pancreas was flipped several times,and then a stoma was made in the jejunum to form its fistula. In the SAP-ALl group,1 mL/kg sodium taurocholate was reversely injected into the pancreatobile duct to establish the model of SAP, and then the jejimum fistula was performed. The SAP-ALI model in Dahuang Fuzi decoction group was treated by injection of 10ml of Dahuang Fuzi decoctionon into the fistula respectively. Blood was collected from heart to detect serum amvlase and endotoxin (ET) levels before the rat being executed. The lung histopathologic changes, pulmonary injury scores and wet/dry weight(W/D) ratios were observed after the rats were executed. The alveolar liquid clearance rate(ALCR), total lung water content (TLW), extravascular lung water content(EVLW) and alveolar epithelial permeability (AEP) were examined in 3,6, 12,24 h after injury.Results There was continuous increase of AEP,TLW and EVLW,as well as progressive reduction of ALCR compared with sham operation group at 3,6,12,24 h after operation. Compared with SAP-ALI group, there was continuous decrease of AEP,TLW and EVLW, and elevated of ALCR at 3,6,12,24 h after operation.Conclusions Dahuang Fuzi decoction can significantly reduce alveolaur epithelial barrier and degree of lung tissue of SAP-ALI rats by inhibiting the elevation of LPS and inflammation reaction.

Effect of Dahuang Fuzi decoction on alveolaur epithelial barrier in rats with lung injury with severe acute pancreatitis

Objective To investigate effect of Dahuang Fuzi decoction on alveolaur epithelial barrier in rats with lung injury with severe acute pancreatitis. Method Ninty-six health SD rats were randomly divided into three groups: sham operation group, SAP-ALI group, Dahuang Fuzi decoction group, and then according to the time point of sacrifice after operation, each group was subdivided into 3,6,12,24 hour subsets ( each, n = 8). After the belly of a rat in the sham operation group was cut open, the pancreas was flipped several times,and then a stoma was made in the jejunum to form its fistula. In the SAP-ALl group,1 mL/kg sodium taurocholate was reversely injected into the pancreatobile duct to establish the model of SAP, and then the jejimum fistula was performed. The SAP-ALI model in Dahuang Fuzi decoction group was treated by injection of 10ml of Dahuang Fuzi decoctionon into the fistula respectively. Blood was collected from heart to detect serum amvlase and endotoxin (ET) levels before the rat being executed. The lung histopathologic changes, pulmonary injury scores and wet/dry weight(W/D) ratios were observed after the rats were executed. The alveolar liquid clearance rate(ALCR), total lung water content (TLW), extravascular lung water content(EVLW) and alveolar epithelial permeability (AEP) were examined in 3,6, 12,24 h after injury.Results There was continuous increase of AEP,TLW and EVLW,as well as progressive reduction of ALCR compared with sham operation group at 3,6,12,24 h after operation. Compared with SAP-ALI group, there was continuous decrease of AEP,TLW and EVLW, and elevated of ALCR at 3,6,12,24 h after operation.Conclusions Dahuang Fuzi decoction can significantly reduce alveolaur epithelial barrier and degree of lung tissue of SAP-ALI rats by inhibiting the elevation of LPS and inflammation reaction.