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时间:2020-06-04
《褪黑素对光气吸入性肺损伤中p38MAPK信号通路的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、648中华劳动卫生职业病杂志2014年9月第32卷第9期ChinJIndHygOccupDis,Sept竺Q,Y,.·论著·褪黑素对光气吸人性肺损伤中p38MAPK信号通路的影响张琳何岱昆邵义如徐道剑申捷【摘要】目的探讨褪黑素(MT)对大鼠光气吸人性肺损伤p38MAPK信号通路的影响。方法50只SD雄性大鼠随机分为光气染毒组、空气对照组、MT处理组、生理盐水对照组和p38MAPK抑制剂SB203580处理组,每组1O只,复制大鼠光气吸人性肺损伤的模型。分别于不同处理后6h后处死动物,检测肺湿干比,肺泡灌洗液(BALF)中丙二醛(MDA)
2、,一氧化氮(N0)含量及髓过氧化物酶(MP0)活力,分别采用免疫组化及蛋白质印迹(Westernblot)法检测p38MAPK及活性形式磷酸化蛋白P.p38的定性定量表达变化情况。Westernblot方法测定肺组织中诱导型一氧化氮合酶(iNOS)的蛋白含量。结果与空气对照组比较,光气染毒组肺湿干比升高,BALF中性粒细胞数增多,差异有统计学意义(P3、APK阳性信号较空气对照组明显增强,主要分布在浸润的炎细胞和血管内皮细胞中,且在很多细胞胞浆与胞核中均呈阳性;MT及SB203580处理组p-p38MAPK阳性细胞分布与光气组类似,但胞核阳性细胞明显减少,且信号明显减弱。光气染毒组MDA和NO含量及MPO活力明显升高,与空气组比较,差异有统计学意义(P<0.O1),MT和SB203580干预组水平MDA和NO含量及MPO活力较光气染毒组明显降低,差异有统计学意义(P<0.05,P<0.05),但仍高于空气对照组。Westernblot检测结果显示,光气染毒组较空气对照组iNOS和P.p4、38表达较强,差异有统计学意义(P<0.叭)。MT和SB203580干预组的iNOS和p-p38表达的水平均低于光气染毒组水平,差异有统计学意义(P5、gLin,HeDaikun,ShaoYiru,XuDaojian,Shene.Emergency&IntensiveCareCenterforChemicAccidentofJinshanHospitalAfiliatedtoFudanUniversity,Shanghai201508,ChinaCorrespondingauthor:Shen(E—mail:j1999sh@163.com)【Abstract】ObjectiveToinvestigatetheeffectofmelatonin(MT)onp38mitogen-activ6、atedproteinkinase(MAPK)signalingpathwayinratswithphosgene—inducedlunginjury.MethodsFiftyspecificpathogen-freemaleSprague—Dawleyratswererandomlydividedintophosgeneinhalationgroup,aircontrolgroup,salinecontrolgroup,MTtreatmentgroup,andSB203580(specificinhibitorofp38MAPK)gr7、oup,with10miceineachgroup.Allgroupsexcepttheaircontrolgroupwereexposedtophosgene,andtheanimalsweresacrificed6hlaterLungwet/dryweight(W/D)ratioandthecontentofmalondialdehyde(MDA)andnitricoxide(N0)andactivityofmyeloperoxidase(MPO)inbronchoalveolarlavagefluid(BALF)weremeasu8、red.Thequalitativeandquantitativeexpressionofp38MAPKandphospho-p38MAPK(p-p38)wasmeasuredbyimmunohistoch
3、APK阳性信号较空气对照组明显增强,主要分布在浸润的炎细胞和血管内皮细胞中,且在很多细胞胞浆与胞核中均呈阳性;MT及SB203580处理组p-p38MAPK阳性细胞分布与光气组类似,但胞核阳性细胞明显减少,且信号明显减弱。光气染毒组MDA和NO含量及MPO活力明显升高,与空气组比较,差异有统计学意义(P<0.O1),MT和SB203580干预组水平MDA和NO含量及MPO活力较光气染毒组明显降低,差异有统计学意义(P<0.05,P<0.05),但仍高于空气对照组。Westernblot检测结果显示,光气染毒组较空气对照组iNOS和P.p
4、38表达较强,差异有统计学意义(P<0.叭)。MT和SB203580干预组的iNOS和p-p38表达的水平均低于光气染毒组水平,差异有统计学意义(P5、gLin,HeDaikun,ShaoYiru,XuDaojian,Shene.Emergency&IntensiveCareCenterforChemicAccidentofJinshanHospitalAfiliatedtoFudanUniversity,Shanghai201508,ChinaCorrespondingauthor:Shen(E—mail:j1999sh@163.com)【Abstract】ObjectiveToinvestigatetheeffectofmelatonin(MT)onp38mitogen-activ6、atedproteinkinase(MAPK)signalingpathwayinratswithphosgene—inducedlunginjury.MethodsFiftyspecificpathogen-freemaleSprague—Dawleyratswererandomlydividedintophosgeneinhalationgroup,aircontrolgroup,salinecontrolgroup,MTtreatmentgroup,andSB203580(specificinhibitorofp38MAPK)gr7、oup,with10miceineachgroup.Allgroupsexcepttheaircontrolgroupwereexposedtophosgene,andtheanimalsweresacrificed6hlaterLungwet/dryweight(W/D)ratioandthecontentofmalondialdehyde(MDA)andnitricoxide(N0)andactivityofmyeloperoxidase(MPO)inbronchoalveolarlavagefluid(BALF)weremeasu8、red.Thequalitativeandquantitativeexpressionofp38MAPKandphospho-p38MAPK(p-p38)wasmeasuredbyimmunohistoch
5、gLin,HeDaikun,ShaoYiru,XuDaojian,Shene.Emergency&IntensiveCareCenterforChemicAccidentofJinshanHospitalAfiliatedtoFudanUniversity,Shanghai201508,ChinaCorrespondingauthor:Shen(E—mail:j1999sh@163.com)【Abstract】ObjectiveToinvestigatetheeffectofmelatonin(MT)onp38mitogen-activ
6、atedproteinkinase(MAPK)signalingpathwayinratswithphosgene—inducedlunginjury.MethodsFiftyspecificpathogen-freemaleSprague—Dawleyratswererandomlydividedintophosgeneinhalationgroup,aircontrolgroup,salinecontrolgroup,MTtreatmentgroup,andSB203580(specificinhibitorofp38MAPK)gr
7、oup,with10miceineachgroup.Allgroupsexcepttheaircontrolgroupwereexposedtophosgene,andtheanimalsweresacrificed6hlaterLungwet/dryweight(W/D)ratioandthecontentofmalondialdehyde(MDA)andnitricoxide(N0)andactivityofmyeloperoxidase(MPO)inbronchoalveolarlavagefluid(BALF)weremeasu
8、red.Thequalitativeandquantitativeexpressionofp38MAPKandphospho-p38MAPK(p-p38)wasmeasuredbyimmunohistoch
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