第8卷第4期2006年8月眼视光学杂志ChirNeJournalofOvtometry&OphthalmologyV01.8No.4Aug.2OO6热休克蛋白72在急性高眼压模型大鼠视网膜神经节细胞中的表达·青光眼研究·卿国平,一,段宣初,蒋幼芹,王宁利1.中南大学湘雅二医院眼科,湖南长沙410011;2.首都医科大学附属北京同仁医院,北京100062Expressionofheatshockprotein72inrelinalmgIi0lncellsinaratmodelofacuteglaucomaafterheatstressOFzincadministrationQINGGuoping,DUANXuanchu,JIANGYouqin,eta1.DofOphthabno/ogy,theSecondX/(//~(I.HospitalofCentralSouthUniver.rity,ChangshaChina,410011【AI蚓d]ObJectiveToinv~tigatewhetherthe.目pr0nofI4_qp72锄beim'ueedinretinal圆Bngh0Dcells(rtc,c~)in8r吐modelofacuteglml—colrl~.treatedwithheatstrOrIt11intraperitonealinjectionot"finesulfilte(24.6me,/kg).MethodsTwenty-sevenmaleWistm"D如"wel-eusedto∞一tabl油acute.gla,commodels.Fiveothe~served∞noiinaleontrol~.Acutegl~commodels’weneshlbl吐lbyintraeameralirrionionintherighteyeswithBSSat102姗Hgfor2hour~.Ninel'IIL4~didnotreceivehe卫邶tandweresacrificedatdiferentinteawalsafterintraeameraligr~or1.)esel'IIL4~~xved∞thedmTmcontrolgroup.Ten曲weretreatedwithheatmr,andei曲t"wel-etreatedwithIt11injectionoffinesulf,~e(24.6me,/kg)twodaysafterintracameralirrigation.Thetreatedratmodels"wel'e~ca'ifieedat,te~n.teaintexval~twoweek.,~aftertl'~linent.111erighteyeswquicklyenueleated,andtheretiilB!~"wiP2~.dissf烈forwetemblotⅢlaly.Rl蜘ItsNoI~p72ⅧfoundinRC.C~inthenoiinalcontrolgroup.InthedIⅢmcontrolgroup,8础tartmu/ltot"I4_qp72Ⅷdetected6~36hour~afterintra-eameralirri~,tion.}lfIr|72w∞detectedat酾击∞tlevelsinRGcsofboththe.妇.,,hockandzincsulfategroups.Thedynamic.~ot"I4_qp72productionwerequit~difezeaatinthetreatedgroup~.Intheheat或rfgroup,tt.qp72印一peared6hoursafterII"e~,a'nealt,andlually.m脚dtoibpeakproductionat48hrpo~t--lamalmealt.I4_qp72di.-appe~d8d日saftertrⅨ止IIlent.Inthezinc住l址egroup,tLqp72、detected24boutsafterfineadmini~.ration,andreacheditshigherlevel48hour~aftert.re~,1nent.Itsp72expre~qionthende.ea'e~dL'dowly.anddk,,~ppe.ared21days~aCterbabInt.Condn,~aTheproduedonot"I4_qp72∞beinducedinR0ot"acutegl~comratswithheatsnOrfine.,~alfate.admixtiL,~d"ation.【Keywords]he.atL,4~oekftein/ⅢlaIy;ooalarhyperten~on;r吐;retinalandi0neelIs[摘要]目的检测热休克反应和硫酸锌腹腔内注射诱导热休克蛋白72(~atshoe&pro~in72,HSP72)在急性高眼压收稿自期:2005—12一l3;修回El期:2006—06—21基金项目:国家自然科学专项基金资助项目(30350001)作者简介:卿国平(1971一),男,湖南东安县人,医学博士,主治医师研究方向:青光眼发病机制和视神经保护。通讯作者:段宣初(E—mail:duanxchu@yahoo.t2om.(m)模型大鼠视网膜神经节细胞(ganglionoell3,RGCs)中的表达及时间规律。方法以平衡盐溶液(barbitolbttfersolu—tim,Bss)在前房内加压灌注制作大鼠急性高眼压模型;用热休克反应或硫酸锌腹腔内注射处理模型大鼠,在不同时间点处死大鼠,摘取模型眼,剥离视网膜,行Westernblot分析。结果正常大鼠RGCs中无HSP72的表达。急性高眼压模型眼前房灌注BSS后6—36h,RGCs内出现HSP72的微量表达,48h后消失。热休克反应和硫酸锌腹腔内注射处理后,模型大鼠RGCs中均出现HSF72的表达,但HSP72的表达持续时间不同。热休克反应组,6h出现HSP'/2的表达,以后逐渐增加,48h达到最高峰,然后逐渐减弱,至反应后第8天消失;硫酸锌注射组,24h后开始出现HSP72的表达,72h达到最高峰,以后逐渐减弱,到第21天后消失。结论正常大鼠RGCs中无HSP'/2的表达;热休克反应和硫酸锌腹腔内注射均可以诱导急性高眼压模型大鼠RGCs中HSP'/2的表达...