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《谷氨酰胺在大鼠視網(wǎng)膜興奮性損傷中對(duì)hsp70的誘導(dǎo)表達(dá)》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、青島大學(xué)碩士學(xué)位論文谷氨酰胺在大鼠視網(wǎng)膜興奮性損傷中對(duì)HSP70的誘導(dǎo)表達(dá)姓名:高小琴申請(qǐng)學(xué)位級(jí)別:碩士專業(yè):眼科學(xué)指導(dǎo)教師:王大博20120522谷氨酰胺在大鼠視網(wǎng)膜興奮性損傷中對(duì)HSPTO的誘導(dǎo)表達(dá)摘要目的:在NMDA所致大鼠視網(wǎng)膜興奮損傷模型中,檢測(cè)谷氨酰胺誘導(dǎo)HSP70的表達(dá)及隨時(shí)間的變化。方法:健康清潔型Wistar大鼠70只隨機(jī)分為三組,正常對(duì)照組10只,空白對(duì)照組10只、實(shí)驗(yàn)組即谷氨酰胺腹腔注射組50只。正常對(duì)照組不做任何處理,空白對(duì)照組和實(shí)驗(yàn)組中所有大鼠均隨機(jī)取大鼠一只眼球玻璃體腔注射
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3、l180mmol/lNMDA制作視網(wǎng)膜興奮性損傷模型,實(shí)驗(yàn)組在大鼠視網(wǎng)膜損傷興奮性損傷模型制作2天后分別腹腔注射谷氨酰胺(0.759/KR),并于注射后1h,4h,8h,12h,24h各隨機(jī)處死10只大鼠,其中1h時(shí)同時(shí)將空白對(duì)照組及正常對(duì)照組所有大鼠處死。HE染色光鏡下觀察各組視網(wǎng)膜組織的形態(tài)學(xué)變化,免疫組織化學(xué)染色方法及WesternBlot分析視網(wǎng)膜HSP70表達(dá)的變化。結(jié)果:HE染色顯示正常對(duì)照組大鼠視網(wǎng)膜組織結(jié)構(gòu)層次清楚,染色均勻,細(xì)胞形態(tài)規(guī)則??瞻讓?duì)照組與實(shí)驗(yàn)組中不同時(shí)間段的大鼠視網(wǎng)膜
4、均顯示視網(wǎng)膜神經(jīng)節(jié)細(xì)胞數(shù)目較正常大鼠減少,排列紊亂,神經(jīng)纖維層與內(nèi)核層可見(jiàn)萎縮,視網(wǎng)膜整體變薄。WesternBlot分析結(jié)果顯示,正常對(duì)照組和空白對(duì)照組僅有少量HSP70的表達(dá)。實(shí)驗(yàn)組注射1h后HSPTO的表達(dá)開(kāi)始增強(qiáng),4h后表達(dá)明顯增多,8h達(dá)到高峰并持續(xù)到12h,24h表達(dá)較前減少,但仍顯著高于對(duì)照組。免疫組織化學(xué)染色顯示誘導(dǎo)表達(dá)的HSP70在視網(wǎng)膜各層細(xì)胞均有顯著表達(dá),而正常對(duì)照組及空白對(duì)照組HSP70僅微量表達(dá)于外核層及光感受器內(nèi)節(jié)。免疫組化染色陽(yáng)性細(xì)胞光密度值測(cè)定結(jié)果與WesternB10
5、t結(jié)果相吻合。結(jié)論:1.成功建立大鼠視網(wǎng)膜興奮性損傷模型;2.正常情況下和玻璃體腔注射NMDA2天后大鼠視網(wǎng)膜微量表達(dá)HSP70;3.腹腔注射谷氨酰胺可以在大鼠視網(wǎng)膜興奮性損傷中誘導(dǎo)HSPTO的強(qiáng)烈表達(dá)。碩士研究生:高小琴(眼科學(xué))指導(dǎo)老師:王大博教授關(guān)鍵詞:谷氨酰胺;熱休克蛋白70;N一甲基天冬氨酸;青光眼GlutamineinducesHSP70onretinalexcitotoxicityinjuryintheratAbstractPURPOSE.Toobservetheeffectsofglu
6、tamine(GLN)ontheexpressionofHSP70intherat’SretinaexcitotoxicityinjuryinducedbyNMDA.METHODS.Atotalof70ratswererandomlydividedintothreegroups,normalcontrolgroupincluding10rats,blankcontrolgroupincluding10rats,experimentalgroupinwhichratsweretreatedwithglu
7、tamineincluding50rats.Theratsofnormalcontrolgroupreceivednotreatment.2ttlofNMDAofconcentrationof80nmol/1wasintravtrealinjectedintotheonerandomeyeofeveryanimalofexperimentalgroupandblankcontrolgroup.Aftertwodays,theratsinexperimentalgroupwereintraperiton
8、ealinjectedwithglutamine(0.759/kg)and10ratsweresacrificedatlh,4h,8h,12h,24hrandomlyandrespectivelyafterglutamineadministration.Theratsinnormalcontrolgroupandblankcontrolgroupweresacrificedatlh.Therats’retinawereHEstainedandobservedunderlightmicroscope,a
9、ndtheexpressionlevelofHSP70weredetectedbyimmunohistochemistryandWesternblotanalysis.RESULT.HEstainingshowthestructureofretinaofnormalcontrolgroupwashistologicallywell·defined,uniforminstaining,andwithregularcellshape.Inblankcontr