中华急诊医学杂志
中華急診醫學雜誌
중화급진의학잡지
CHINESE JOURNAL OF EMERGENCY MEDICINE
2001年
2期
93-95,98
,共4页
刘京衢%高维谊%姚咏明%柴家科%郭振荣%盛志勇
劉京衢%高維誼%姚詠明%柴傢科%郭振榮%盛誌勇
류경구%고유의%요영명%시가과%곽진영%성지용
烧伤%白细胞介素-18%γ-干扰素%Fas配体%选择性消化道脱污染
燒傷%白細胞介素-18%γ-榦擾素%Fas配體%選擇性消化道脫汙染
소상%백세포개소-18%γ-간우소%Fas배체%선택성소화도탈오염
目的探讨选择性消化道脱污染对烫伤大鼠白细胞介素-18及相关介质表达的影响。方法采用大鼠30%体表面积Ⅲ度烫伤模型,组织IL-18、IFN-γ、FasL mRNA含量采用逆转录聚合酶链式反应检测,IFN-γ蛋白含量采用ELISA法测定。结果烫伤后组织IL-18 mRNA表达较伤前值即有显著升高,8h达高峰,且一直持续至伤后24h;烫伤后组织IFN-γ mRNA表达开始增加,伤后8h达高峰。肠、肺组织IFN-γ水平与基因表达趋势基本一致。未致伤动物肠、肺可表达少量FasL mRNA,烫伤可使其表达增加。相关分析表明,组织IL-18 mRNA表达与IFN-γ mR NA、IFN-γ水平、FasL mRNA表达均呈显著正相关。结论肠、肺组织IL-18 mRNA表达在烫伤早期即显著增多,并呈一逐渐升高的趋势,创伤后组织IL-18 mRNA基因表达对IFN-γ、FasL的生成具有重要影响。SOD预治疗后可不同程度抑制IL-18及相关介质表达的表达。
目的探討選擇性消化道脫汙染對燙傷大鼠白細胞介素-18及相關介質錶達的影響。方法採用大鼠30%體錶麵積Ⅲ度燙傷模型,組織IL-18、IFN-γ、FasL mRNA含量採用逆轉錄聚閤酶鏈式反應檢測,IFN-γ蛋白含量採用ELISA法測定。結果燙傷後組織IL-18 mRNA錶達較傷前值即有顯著升高,8h達高峰,且一直持續至傷後24h;燙傷後組織IFN-γ mRNA錶達開始增加,傷後8h達高峰。腸、肺組織IFN-γ水平與基因錶達趨勢基本一緻。未緻傷動物腸、肺可錶達少量FasL mRNA,燙傷可使其錶達增加。相關分析錶明,組織IL-18 mRNA錶達與IFN-γ mR NA、IFN-γ水平、FasL mRNA錶達均呈顯著正相關。結論腸、肺組織IL-18 mRNA錶達在燙傷早期即顯著增多,併呈一逐漸升高的趨勢,創傷後組織IL-18 mRNA基因錶達對IFN-γ、FasL的生成具有重要影響。SOD預治療後可不同程度抑製IL-18及相關介質錶達的錶達。
목적탐토선택성소화도탈오염대탕상대서백세포개소-18급상관개질표체적영향。방법채용대서30%체표면적Ⅲ도탕상모형,조직IL-18、IFN-γ、FasL mRNA함량채용역전록취합매련식반응검측,IFN-γ단백함량채용ELISA법측정。결과탕상후조직IL-18 mRNA표체교상전치즉유현저승고,8h체고봉,차일직지속지상후24h;탕상후조직IFN-γ mRNA표체개시증가,상후8h체고봉。장、폐조직IFN-γ수평여기인표체추세기본일치。미치상동물장、폐가표체소량FasL mRNA,탕상가사기표체증가。상관분석표명,조직IL-18 mRNA표체여IFN-γ mR NA、IFN-γ수평、FasL mRNA표체균정현저정상관。결론장、폐조직IL-18 mRNA표체재탕상조기즉현저증다,병정일축점승고적추세,창상후조직IL-18 mRNA기인표체대IFN-γ、FasL적생성구유중요영향。SOD예치료후가불동정도억제IL-18급상관개질표체적표체。
Objective To investigate the effect of selective decontamination of the digestive tract on interleukin-18 mRNA expression in thermal injured rats.Methods The animals were subjected to a 30% total body surface area full-thickness thermal injury,fluid resuscitation were performed at 6 hour aftev burns.54 male Wistar rats were randomly divided into three groups:normal controls,30% Ⅲ injury group,and selective decontamination of the digestive tract (SDD) treatment group.Cytokine mRNA expression were semi-quantitated by the reverse transcription polymerase chain reaction (RT-PCR) using GAPDH as an internal standard.Enzyme-linked immunosorbent assay (ELISA) was performed for IFN-γ measurement.Results IL-18、IFN-γ、FasL mRNA expression significantly increased at 2 hour,peaking at 8 hour,and a high level was maintained till 24 hour.However,treatment with SDD could lower systemic endotoxin levels,and markedly inhibit IL-18、IFN-γ、FasL mRNA expression.In addition,positive correlation between IL-18 mRNA expression and IFN-γ mRNA expression,IFN-γ level,FasL mRNA expression were noted(r=0.716~0.905,P<0.01).Conclusion This study suggests that major burns can lead to a marked elevation of tissue IL-18 mRNA expression in vital organs,Treatment with SDD can effectively block IL-18 pathway and excessive inflammation response secondary to major burns.