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时间:2020-06-01
《线粒体功能障碍参与顺铂诱导的小鼠急性肾损伤.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、·9l4·中华肾脏病杂志2013年12月第29卷第12期ChinJNeDhrolDecember2013,Vo1.29N—o—.12·基础研究-线粒体功能障碍参与顺铂诱导的小鼠急性肾损伤潘晶晶宣小燕张爱华丁桂霞【摘要】目的通过观察顺铂在不同剂量下诱导小鼠急性。肾损伤的特点,进一步了解线粒体功能障碍参与急性肾损伤的机制。方法雄性C57BL/6J小鼠18只,随机分为正常对照组(n=6)及顺铂处理组(n=12),其中顺铂处理组按顺铂给予剂量不同又分为10mg/kg组(n=6)和20mg/kg组(n=6)。采用顺铂单次腹腔注射建立急性肾损伤模型,72h后处死小鼠。测定肾功能相关生化指标
2、、肾组织病理改变、。肾损伤标志物的变化以及肾脏线粒体功能及结构变化指标。结果(1)顺铂注射72h后,顺铂处理组与对照组相比出现明显急性肾损伤表现,其中20mg/kg组肾损伤程度更为严重,表现为随着顺铂剂量加大,肾生化指标血肌酐、尿蛋白等水平逐渐升高。(2)顺铂处理组肾小管结构破坏,蛋白管型形成,同时肾损伤标志物肾损伤分子1(KIM一1)mRNA升高(P<0.05)。(3)顺铂处理组肾小管线粒体结构破坏明显,同时线粒体DNA拷贝数下降(P<0.05),线粒体相关蛋白过氧化物酶体增殖活化受体辅助活化因子1d(PGC—lc1)及ATP合酶表达降低(P<0.O1),细胞色素C从线粒体向
3、胞质释放;且不同浓度顺铂组间各项指标差异亦有统计学意义(P<0.05)。结论顺铂能够呈剂量依赖性的诱导急性肾损伤发生,线粒体功能障碍参与了肾损伤发生,并与肾损伤的病理改变密切相关。【关键词】顺铂;线粒体;急性肾损伤;肾损伤分子1;线粒体功能障碍Mitochondrialdysfunctionintheprocessofcisplatin—inducedacutekidneyinjuryinmicePANring—ring,XUANXiao—yanZHANGAi—hua,DINGGui—xia.DepartmentofNephrology,NanjingChildrenHospi
4、tal,NanfingMedicalUniversity,Nanfing210008,ChinaCorrespondingauthor:DINGGui—xia,Email:bhgyuan@163.corn【Abstract】ObjectiveToassessthecharacteristicsofdifferentdosesofcisplatin—inducedacutekidneyinjury,furthertounderstandmitochondrialdysfunctionanditsroleinacutekidneyinjury(AKI).MethodsMaleC57
5、BL/6Jmicewerefirstrandomlydividedintotwogroups:controlgroup6)andAKIgroup(n=12).Then,AKIgroupwassubsequentlydividedintoothertwogroupsaccordingtodifferentdoseofcisplatin(10mg/kgor20mg/kg).AKIgroupreceivedintraperitonealinjectionofcisplatin.Allmiceweresacrificedafter72hofinjection.Renalbiochemi
6、calfunction,renalpathologicalchanges,renalinjurymarkers,kidneymitochondrialfunctionandstructuralchangeswereobserved.Results(1)After72hoursofinjection,theAKIgroupperformedsignificantkidneyinjurychangescomparedtocontrolgroup,thereinto20mg/kggroupwasmoreseriousthan10mg/kggroup.Withthecisplatind
7、oseincreasing,renalfunctionmarkerssuchasserumcreatinine,urineproteingraduallyincreased.(2)Kidneybiopsyshowedtubularstructuraldamage,theformationofproteincasts,kidneyinjurymolecule一1(KIM一1)graduallyincreased(P<0.05).(3)Electronmicroscopyf0undtubular
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