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1、·9l4·中華腎臟病雜志2013年12月第29卷第12期ChinJNeDhrolDecember2013,Vo1.29N—o—.12·基礎(chǔ)研究-線粒體功能障礙參與順鉑誘導(dǎo)的小鼠急性腎損傷潘晶晶宣小燕張愛華丁桂霞【摘要】目的通過觀察順鉑在不同劑量下誘導(dǎo)小鼠急性。腎損傷的特點(diǎn),進(jìn)一步了解線粒體功能障礙參與急性腎損傷的機(jī)制。方法雄性C57BL/6J小鼠18只,隨機(jī)分為正常對(duì)照組(n=6)及順鉑處理組(n=12),其中順鉑處理組按順鉑給予劑量不同又分為10mg/kg組(n=6)和20mg/kg組(n=6)。采用順鉑單次腹腔注射建立急性腎損傷模型,72h后處死小鼠。測(cè)定腎功能相關(guān)生化指標(biāo)
2、、腎組織病理改變、。腎損傷標(biāo)志物的變化以及腎臟線粒體功能及結(jié)構(gòu)變化指標(biāo)。結(jié)果(1)順鉑注射72h后,順鉑處理組與對(duì)照組相比出現(xiàn)明顯急性腎損傷表現(xiàn),其中20mg/kg組腎損傷程度更為嚴(yán)重,表現(xiàn)為隨著順鉑劑量加大,腎生化指標(biāo)血肌酐、尿蛋白等水平逐漸升高。(2)順鉑處理組腎小管結(jié)構(gòu)破壞,蛋白管型形成,同時(shí)腎損傷標(biāo)志物腎損傷分子1(KIM一1)mRNA升高(P<0.05)。(3)順鉑處理組腎小管線粒體結(jié)構(gòu)破壞明顯,同時(shí)線粒體DNA拷貝數(shù)下降(P<0.05),線粒體相關(guān)蛋白過氧化物酶體增殖活化受體輔助活化因子1d(PGC—lc1)及ATP合酶表達(dá)降低(P<0.O1),細(xì)胞色素C從線粒體向
3、胞質(zhì)釋放;且不同濃度順鉑組間各項(xiàng)指標(biāo)差異亦有統(tǒng)計(jì)學(xué)意義(P<0.05)。結(jié)論順鉑能夠呈劑量依賴性的誘導(dǎo)急性腎損傷發(fā)生,線粒體功能障礙參與了腎損傷發(fā)生,并與腎損傷的病理改變密切相關(guān)?!娟P(guān)鍵詞】順鉑;線粒體;急性腎損傷;腎損傷分子1;線粒體功能障礙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