中华危重病急救医学
中華危重病急救醫學
중화위중병급구의학
Chinese Critical Care Medicine
2015年
6期
494-497
,共4页
毛岸荣%黄河%丁科%辛海贝%种锦贵%胡剑平
毛岸榮%黃河%丁科%辛海貝%種錦貴%鬍劍平
모안영%황하%정과%신해패%충금귀%호검평
多器官功能障碍综合征%p38丝裂素活化蛋白激酶%肿瘤坏死因子-α%内皮祖细胞
多器官功能障礙綜閤徵%p38絲裂素活化蛋白激酶%腫瘤壞死因子-α%內皮祖細胞
다기관공능장애종합정%p38사렬소활화단백격매%종류배사인자-α%내피조세포
Multiple organ dysfunction syndrome%p38 mitogen-activated protein kinase%Tumor necrosis factor-α%Endothelial progenitor cell
目的:观察多器官功能障碍综合征(MODS)家猪内皮祖细胞(EPC)的数量与功能,探讨创伤后MODS的发病机制。方法将40头家猪按随机数字表法分为假手术组和实验组,每组20头。采取失血性休克和内毒素血症的“二次打击法”制备MODS动物模型。分别于失血前(T1)、内毒素注射前(T2)及注射后1、24、48 h(T3、T4、T5)取外周静脉血,采用蛋白质免疫印迹试验(Western Blot)检测外周血单核细胞磷酸化p38丝裂素活化蛋白激酶(p-p38MAPK)的表达;酶联免疫吸附试验(ELISA)检测血浆肿瘤坏死因子-α(TNF-α)浓度;流式细胞仪检测外周血EPC数量。结果实验组有17头家猪成功复制MODS模型,动物的外周血单核细胞p-p38MAPK表达(A值)于T3时达到高峰(4.83±0.52),T4、T5时逐渐下降(4.36±0.43、1.93±0.33),T3、T4、T5时均显著高于T1时(1.00±0.22,均P<0.01)。实验组血浆TNF-α浓度(ng/L)于T3时显著高于假手术组并达高峰(532.43±52.17比129.03±20.45,t=31.163,P<0.001),随后逐渐下降,T4、T5时仍显著高于假手术组(T4:398.93±35.75比131.12±29.53,t=26.562,P<0.001;T5:287.48±27.26比126.44±26.96,t=17.861,P<0.001)。实验组外周血EPC数量(×107/L)于T3时显著高于假手术组并达高峰(4.832±0.624比3.545±0.363,t=9.542,P<0.001),随后逐渐下降,T4、T5时显著低于假手术组(T4:2.628±0.627比3.442±0.325,t=5.043,P<0.001;T5:2.203±0.711比3.471±0.323,t=2.972,P<0.001)。结论在创伤性MODS的发生机制中,外周血单核细胞中p38MAPK的磷酸化可以促使血浆中TNF-α浓度升高,EPC数量下降,可能为其机制之一。
目的:觀察多器官功能障礙綜閤徵(MODS)傢豬內皮祖細胞(EPC)的數量與功能,探討創傷後MODS的髮病機製。方法將40頭傢豬按隨機數字錶法分為假手術組和實驗組,每組20頭。採取失血性休剋和內毒素血癥的“二次打擊法”製備MODS動物模型。分彆于失血前(T1)、內毒素註射前(T2)及註射後1、24、48 h(T3、T4、T5)取外週靜脈血,採用蛋白質免疫印跡試驗(Western Blot)檢測外週血單覈細胞燐痠化p38絲裂素活化蛋白激酶(p-p38MAPK)的錶達;酶聯免疫吸附試驗(ELISA)檢測血漿腫瘤壞死因子-α(TNF-α)濃度;流式細胞儀檢測外週血EPC數量。結果實驗組有17頭傢豬成功複製MODS模型,動物的外週血單覈細胞p-p38MAPK錶達(A值)于T3時達到高峰(4.83±0.52),T4、T5時逐漸下降(4.36±0.43、1.93±0.33),T3、T4、T5時均顯著高于T1時(1.00±0.22,均P<0.01)。實驗組血漿TNF-α濃度(ng/L)于T3時顯著高于假手術組併達高峰(532.43±52.17比129.03±20.45,t=31.163,P<0.001),隨後逐漸下降,T4、T5時仍顯著高于假手術組(T4:398.93±35.75比131.12±29.53,t=26.562,P<0.001;T5:287.48±27.26比126.44±26.96,t=17.861,P<0.001)。實驗組外週血EPC數量(×107/L)于T3時顯著高于假手術組併達高峰(4.832±0.624比3.545±0.363,t=9.542,P<0.001),隨後逐漸下降,T4、T5時顯著低于假手術組(T4:2.628±0.627比3.442±0.325,t=5.043,P<0.001;T5:2.203±0.711比3.471±0.323,t=2.972,P<0.001)。結論在創傷性MODS的髮生機製中,外週血單覈細胞中p38MAPK的燐痠化可以促使血漿中TNF-α濃度升高,EPC數量下降,可能為其機製之一。
목적:관찰다기관공능장애종합정(MODS)가저내피조세포(EPC)적수량여공능,탐토창상후MODS적발병궤제。방법장40두가저안수궤수자표법분위가수술조화실험조,매조20두。채취실혈성휴극화내독소혈증적“이차타격법”제비MODS동물모형。분별우실혈전(T1)、내독소주사전(T2)급주사후1、24、48 h(T3、T4、T5)취외주정맥혈,채용단백질면역인적시험(Western Blot)검측외주혈단핵세포린산화p38사렬소활화단백격매(p-p38MAPK)적표체;매련면역흡부시험(ELISA)검측혈장종류배사인자-α(TNF-α)농도;류식세포의검측외주혈EPC수량。결과실험조유17두가저성공복제MODS모형,동물적외주혈단핵세포p-p38MAPK표체(A치)우T3시체도고봉(4.83±0.52),T4、T5시축점하강(4.36±0.43、1.93±0.33),T3、T4、T5시균현저고우T1시(1.00±0.22,균P<0.01)。실험조혈장TNF-α농도(ng/L)우T3시현저고우가수술조병체고봉(532.43±52.17비129.03±20.45,t=31.163,P<0.001),수후축점하강,T4、T5시잉현저고우가수술조(T4:398.93±35.75비131.12±29.53,t=26.562,P<0.001;T5:287.48±27.26비126.44±26.96,t=17.861,P<0.001)。실험조외주혈EPC수량(×107/L)우T3시현저고우가수술조병체고봉(4.832±0.624비3.545±0.363,t=9.542,P<0.001),수후축점하강,T4、T5시현저저우가수술조(T4:2.628±0.627비3.442±0.325,t=5.043,P<0.001;T5:2.203±0.711비3.471±0.323,t=2.972,P<0.001)。결론재창상성MODS적발생궤제중,외주혈단핵세포중p38MAPK적린산화가이촉사혈장중TNF-α농도승고,EPC수량하강,가능위기궤제지일。
Objective To study the modulation in number and function of endothelial progenitor cell ( EPC ) in multiple organ dysfunction syndrome ( MODS ) after trauma in swine, and to investigate its pathogenesis. Methods Forty pigs were divided into sham group and MODS group ( each, n = 20 ). The model of MODS of "two-hit" injury, namely hemorrhagic shock and endotoxemia, was reproduced. The peripheral blood was collected before hemorrhage ( T1 ) and endotoxin injection ( T2 ), and 1 hour ( T3 ), 24 hours ( T4 ), 48 hours ( T5 ) after endotoxin injection. Phosphorylation of p38 mitogen-activated protein kinase ( p-p38MAPK ) in mononuclear cell was determined by Western Blot, the content of tumor necrosis factor-α ( TNF-α) was determined with enzyme linked immunosorbent assay ( ELISA ), and the number of EPC was determined with flow cytometry. Results Model of MODS was successfully reproduced in 17 pigs. In model group, the expression of p-p38MAPK ( A value ) peaked at T3 ( 4.83±0.52 ), and gradually declined at T4 and T5 ( 4.36±0.43, 1.93±0.33 ), and the expression of p-p38MAPK at T3-T5 was significantly higher than that at T1 ( 1.00±0.22, all P<0.01 ). The plasma concentration of TNF-α( ng/L ) at T3 in MODS group was obviously elevated compared with that of sham group ( 532.43±52.17 vs. 129.03±20.45, t=31.163, P<0.001 ), and it peaked at T3, it then gradually lowered, and it was significantly higher at T4 and T5 than that in sham group ( T4: 398.93±35.75 vs. 131.12±29.53, t = 26.562, P < 0.001; T5: 287.48±27.26 vs. 126.44±26.96, t=17.861, P<0.001 ). The number of EPC ( ×107/L ) was apparently increased in MODS group at T3 compared with sham group ( 4.832±0.624 vs. 3.545±0.363, t=9.542, P<0.001 ), and it peaked at T3, then gradually decreased, and the number of EPC at T4 and T5 was significantly lower than that in sham group ( T4:2.628±0.627 vs. 3.442±0.325, t=5.043, P<0.001;T5:2.203±0.711 vs. 3.471±0.323, t=2.972, P<0.001 ). Conclusion Phosphorylation of p38MAPK could increase the plasma concentration of TNF-αand decrease the quantity of EPC in MODS,which may be one of the mechanisms of MODS.