BACKGROUND Our previous studies confirmed that abdominal paracentesis drainage(APD)attenuates intestinal mucosal injury in rats with severe acute pancreatitis(SAP),and improves administration of enteral nutrition in p...BACKGROUND Our previous studies confirmed that abdominal paracentesis drainage(APD)attenuates intestinal mucosal injury in rats with severe acute pancreatitis(SAP),and improves administration of enteral nutrition in patients with acute pancreatitis(AP).However,the underlying mechanisms of the beneficial effects of APD remain poorly understood.AIM To evaluate the effect of APD on intestinal inflammation and accompanying apoptosis induced by SAP in rats,and its potential mechanisms.METHODS SAP was induced in male adult Sprague-Dawley rats by 5%sodium taurocholate.Mild AP was induced by intraperitoneal injections of cerulein(20μg/kg body weight,six consecutive injections).Following SAP induction,a drainage tube connected to a vacuum ball was placed into the lower right abdomen of the rats to build APD.Morphological changes,serum inflammatory mediators,serum and ascites high mobility group box protein 1(HMGB1),intestinal barrier function indices,apoptosis and associated proteins,and toll-like receptor 4(TLR4)signaling molecules in intestinal tissue were assessed.RESULTS APD significantly alleviated intestinal mucosal injury induced by SAP,as demonstrated by decreased pathological scores,serum levels of D-lactate,diamine oxidase and endotoxin.APD reduced intestinal inflammation and accompanying apoptosis of mucosal cells,and normalized the expression of apoptosis-associated proteins in intestinal tissues.APD significantly suppressed activation of the intestinal TLR4 signaling pathway mediated by HMGB1,thus exerting protective effects against SAP-associated intestinal injury.CONCLUSION APD improved intestinal barrier function,intestinal inflammatory response and accompanying mucosal cell apoptosis in SAP rats.The beneficial effects are potentially due to inhibition of HMGB1-mediated TLR4 signaling.展开更多
TO THE EDITORI read with a great interest the paper by Gonzalez-Roldan et al. The authors reported on the pattern expression of TREM-1 during sepsis and major abdominal surgery as compared to healthy controls and conc...TO THE EDITORI read with a great interest the paper by Gonzalez-Roldan et al. The authors reported on the pattern expression of TREM-1 during sepsis and major abdominal surgery as compared to healthy controls and concluded that TREM-1 expression increased on the surface of monocytes after surgery. Several points deserve consideration. First, no data related to TREM-1 expression on neutrophils is provided.展开更多
BACKGROUND Abdominal paracentesis drainage(APD)is a safe and effective strategy for severe acute pancreatitis(SAP)patients.However,the effects of APD treatment on SAPassociated cardiac injury remain unknown.AIM To inv...BACKGROUND Abdominal paracentesis drainage(APD)is a safe and effective strategy for severe acute pancreatitis(SAP)patients.However,the effects of APD treatment on SAPassociated cardiac injury remain unknown.AIM To investigate the protective effects of APD on SAP-associated cardiac injury and the underlying mechanisms.METHODS SAP was induced by 5%sodium taurocholate retrograde injection in Sprague-Dawley rats.APD was performed by inserting a drainage tube with a vacuum ball into the lower right abdomen of the rats immediately after SAP induction.Morphological staining,serum amylase and inflammatory mediators,serum and ascites high mobility group box(HMGB)1,cardiac-related enzymes indexes and cardiac function,oxidative stress markers and apoptosis and associated proteins were assessed in the myocardium in SAP rats.Nicotinamide adenine dinucleotide phosphate oxidase activity and mRNA and protein expression were also examined.RESULTS APD treatment improved cardiac morphological changes,inhibited cardiac dysfunction,decreased cardiac enzymes and reduced cardiomyocyte apoptosis,proapoptotic Bax and cleaved caspase-3 protein levels.APD significantly decreased serum levels of HMGB1,inhibited nicotinamide adenine dinucleotide phosphate oxidase expression and ultimately alleviated cardiac oxidative injury.Furthermore,the activation of cardiac nicotinamide adenine dinucleotide phosphate oxidase by pancreatitis-associated ascitic fluid intraperitoneal injection was effectively inhibited by adding anti-HMGB1 neutralizing antibody in rats with mild acute pancreatitis.CONCLUSION APD treatment could exert cardioprotective effects on SAP-associated cardiac injury through suppressing HMGB1-mediated oxidative stress,which may be a novel mechanism behind the effectiveness of APD on SAP.展开更多
目的探讨腹腔感染致脓毒症患者外周血血清淀粉样蛋白A(serum amyloid A protein,SAA)、程序性细胞死亡因子-1(programmed cell death-1,PD-1)、及CD4^+、CD8^+T细胞的表达。方法选择2014-01至2015-12连云港市某人民医院重症监护病房(int...目的探讨腹腔感染致脓毒症患者外周血血清淀粉样蛋白A(serum amyloid A protein,SAA)、程序性细胞死亡因子-1(programmed cell death-1,PD-1)、及CD4^+、CD8^+T细胞的表达。方法选择2014-01至2015-12连云港市某人民医院重症监护病房(intensive care unit,ICU)收治的37例腹腔感染致脓毒症患者为研究对象,根据病情分为脓毒症组(20例)和严重脓毒症休克组(17例),另选18名健康人作为对照组。患者在起病入科时抽取外周血,采用酶联免疫吸附法(enzyme-linked immunoassay,ELISA)检测SAA、PD-1的浓度,流式细胞仪检测外周血T细胞亚群CD4^+、CD8^+、CD4^+/CD8^+的表达。结果与健康对照组比,脓毒症组、严重脓毒症及休克组外周血SAA浓度升高,PD-1浓度降低,CD4^+T细胞比率、CD4^+/CD8^+比值升高,CD8^+T细胞比率降低,差异均有统计学意义(P<0.05);与脓毒症组相比,严重脓毒症及休克组外周血SAA浓度更高,PD-1浓度更低,CD4^+T细胞比率、CD4^+/CD8^+比值更高,CD8^+T细胞比率更低,差异均有统计学意义(P<0.05)。结论外周血SAA、PD-1及CD4^+、CD8^+T细胞可作为腹腔感染致脓毒症患者病情的监测指标,且病情越重数值变化越大。展开更多
基金Supported by The National Natural Science Foundation of China,No.81772001the National Clinical Key Subject of China,No.41732113
文摘BACKGROUND Our previous studies confirmed that abdominal paracentesis drainage(APD)attenuates intestinal mucosal injury in rats with severe acute pancreatitis(SAP),and improves administration of enteral nutrition in patients with acute pancreatitis(AP).However,the underlying mechanisms of the beneficial effects of APD remain poorly understood.AIM To evaluate the effect of APD on intestinal inflammation and accompanying apoptosis induced by SAP in rats,and its potential mechanisms.METHODS SAP was induced in male adult Sprague-Dawley rats by 5%sodium taurocholate.Mild AP was induced by intraperitoneal injections of cerulein(20μg/kg body weight,six consecutive injections).Following SAP induction,a drainage tube connected to a vacuum ball was placed into the lower right abdomen of the rats to build APD.Morphological changes,serum inflammatory mediators,serum and ascites high mobility group box protein 1(HMGB1),intestinal barrier function indices,apoptosis and associated proteins,and toll-like receptor 4(TLR4)signaling molecules in intestinal tissue were assessed.RESULTS APD significantly alleviated intestinal mucosal injury induced by SAP,as demonstrated by decreased pathological scores,serum levels of D-lactate,diamine oxidase and endotoxin.APD reduced intestinal inflammation and accompanying apoptosis of mucosal cells,and normalized the expression of apoptosis-associated proteins in intestinal tissues.APD significantly suppressed activation of the intestinal TLR4 signaling pathway mediated by HMGB1,thus exerting protective effects against SAP-associated intestinal injury.CONCLUSION APD improved intestinal barrier function,intestinal inflammatory response and accompanying mucosal cell apoptosis in SAP rats.The beneficial effects are potentially due to inhibition of HMGB1-mediated TLR4 signaling.
文摘TO THE EDITORI read with a great interest the paper by Gonzalez-Roldan et al. The authors reported on the pattern expression of TREM-1 during sepsis and major abdominal surgery as compared to healthy controls and concluded that TREM-1 expression increased on the surface of monocytes after surgery. Several points deserve consideration. First, no data related to TREM-1 expression on neutrophils is provided.
基金Supported by National Natural Science Foundation of China,No.81772001National Clinical Key Subject of China,No.41792113Technology Plan Program of Sichuan Provence,No.2015SZ0229,No.2016HH0067,No.2018JY0041and No.2019YJ0277
文摘BACKGROUND Abdominal paracentesis drainage(APD)is a safe and effective strategy for severe acute pancreatitis(SAP)patients.However,the effects of APD treatment on SAPassociated cardiac injury remain unknown.AIM To investigate the protective effects of APD on SAP-associated cardiac injury and the underlying mechanisms.METHODS SAP was induced by 5%sodium taurocholate retrograde injection in Sprague-Dawley rats.APD was performed by inserting a drainage tube with a vacuum ball into the lower right abdomen of the rats immediately after SAP induction.Morphological staining,serum amylase and inflammatory mediators,serum and ascites high mobility group box(HMGB)1,cardiac-related enzymes indexes and cardiac function,oxidative stress markers and apoptosis and associated proteins were assessed in the myocardium in SAP rats.Nicotinamide adenine dinucleotide phosphate oxidase activity and mRNA and protein expression were also examined.RESULTS APD treatment improved cardiac morphological changes,inhibited cardiac dysfunction,decreased cardiac enzymes and reduced cardiomyocyte apoptosis,proapoptotic Bax and cleaved caspase-3 protein levels.APD significantly decreased serum levels of HMGB1,inhibited nicotinamide adenine dinucleotide phosphate oxidase expression and ultimately alleviated cardiac oxidative injury.Furthermore,the activation of cardiac nicotinamide adenine dinucleotide phosphate oxidase by pancreatitis-associated ascitic fluid intraperitoneal injection was effectively inhibited by adding anti-HMGB1 neutralizing antibody in rats with mild acute pancreatitis.CONCLUSION APD treatment could exert cardioprotective effects on SAP-associated cardiac injury through suppressing HMGB1-mediated oxidative stress,which may be a novel mechanism behind the effectiveness of APD on SAP.
文摘目的探讨腹腔感染致脓毒症患者外周血血清淀粉样蛋白A(serum amyloid A protein,SAA)、程序性细胞死亡因子-1(programmed cell death-1,PD-1)、及CD4^+、CD8^+T细胞的表达。方法选择2014-01至2015-12连云港市某人民医院重症监护病房(intensive care unit,ICU)收治的37例腹腔感染致脓毒症患者为研究对象,根据病情分为脓毒症组(20例)和严重脓毒症休克组(17例),另选18名健康人作为对照组。患者在起病入科时抽取外周血,采用酶联免疫吸附法(enzyme-linked immunoassay,ELISA)检测SAA、PD-1的浓度,流式细胞仪检测外周血T细胞亚群CD4^+、CD8^+、CD4^+/CD8^+的表达。结果与健康对照组比,脓毒症组、严重脓毒症及休克组外周血SAA浓度升高,PD-1浓度降低,CD4^+T细胞比率、CD4^+/CD8^+比值升高,CD8^+T细胞比率降低,差异均有统计学意义(P<0.05);与脓毒症组相比,严重脓毒症及休克组外周血SAA浓度更高,PD-1浓度更低,CD4^+T细胞比率、CD4^+/CD8^+比值更高,CD8^+T细胞比率更低,差异均有统计学意义(P<0.05)。结论外周血SAA、PD-1及CD4^+、CD8^+T细胞可作为腹腔感染致脓毒症患者病情的监测指标,且病情越重数值变化越大。
