简介:·AIM:Tostudytheeffectsofdanhonghuayukoufuye(DHK)onfastingbloodglucose(FBG)anddiabeticretinopathy(DR)instreptozotocin(STZ)-inducedtype1diabeticratstofacilitatetherationalusageofthisdrug.·METHODS:DiabeticratswereinducedbyinjectionofasingledoseofSTZintraperitoneallyat50mg/kg.Flashelectroretinogram(FERG)andoscillatorypotentials(OPs)wereusedtomeasureretinalfunction.Themicrovascularperfusionofearswasperformedtostudythemicrocirculationinrats.FBG,body-weight,and24-hurinevolume,waterintakeanddietintakewerealsoassessed.·RESULTS:DHKhadnoeffectonFBGinnormalrats.However,STZ+DHKgroupweresignificantlydifferentfromthoseofModelandmovedtowardthoseofnormalcontrol.Itreversedtheincreaseindietintake(P≤0.05vsmodelcontrol)andthelossinbody-weight(P≤0.05vsmodelcontrol)indiabeticrats.DHKdecreasedtheFBGofdiabeticratsby25.6%(P≤0.05)and37.9%(P≤0.01)after14and21daysadministrationascomparedwiththemodelcontrol,respectively.Moreover,DHKsignificantlyincreasedtheFERGb-waveamplitudeby80%(P≤0.05vsmodelcontrol)anddecreasedtheFERGb-wavelatencyby15.3%(P≤0.01vsmodelcontrol)after24daysadministration.TheOP1andOP2amplitudesinDHKgroupwere2.6(P≤0.01)and2.0(P≤0.01)timesofmodelgroupafter24daysofDHKtreatment,respectively.Atthesametime,OP1andOP2latenciesinDHKgroupreducedby16.0%(P≤0.001)and14.7%(P≤0.001)ascomparedwiththemodelcontrol,respectively.Furthermore,themicrovascularperfusionofDHKgroupwas2.4timesofmodelgroup(P≤0.001)after21daysadministration.·CONCLUSION:DHKhadnoeffectonnormalFBG.Butithadantihyperglycemicactivity,andhadapreventiveandtherapeuticeffectonDRindiabeticrats.·
简介:AIM:Toanalyzetheapplicationofmicrobubblecontrasttechnologyinthetreatmentofophthalmicdiseases,mainlyanalyzingitsadvantagesandexistingproblems.METHODS:Atotalof30representativeliteraturesabouttheapplicationofultrasoundcontrastagentingenetargetedtherapyathomeandabroadwerecollected,andfocusingonsortingouttheliteraturereportingthetreatmentofophthalmicdiseaseswithmicrobubblecontrasttechnologyinrecentyears,thenrecallingitsadvantagesandproblems,finallymakingreasonableassessmentonexistingproblemsandproposingpossiblesolutionstotheproblems.RESULTS:Duetoitsuniquesafetyandefficacy,thetreatmentofophthalmicdiseaseswithmicrobubblecontrasttechnologyhasincreasinglydrawntheattentionofclinicians,buttworelevantissuesshouldbeconsidered:first,thenatureofcontrastagentandthechoiceofcorrespondingultrasoundparameters;second,relativeincidenceoftissuebleeding,intravascularhemolysis,moderateorsevereallergyaswellasothersideeffects.CONCLUSION:Microbubblemaybecomethecarrieroftargetedtherapy,andasakindofnewnon-invasivedeliverysystem,theultrasoundcontrastagenthasbroadapplicationprospects,butitsapplicationinophthalmicresearchisstillinitsinitialstageandthesafetyofcontrast-enhancedultrasoundstillneedsfurtherstudy.
简介:AIM:Tofindasimplemathematicalcorrelationbetweenthelensbasecurve(BC)andkeratometryfindings(krf).METHODS:Thisretrospectivestudyincluded400keratoconiceyes(350patients)previouslyfitwithrigidcontactlensesatanacademiceyecenteroverafiveyearperiod.Thepatientswereclassifiedintofivegroupsbasedonthekeratometryfindings(krf<7,krf:7-8,krf>8,krf-krs(differencebetweentwokeratometry;flatandsteep)=0.3-0.6,krf-krs>0.6mmasgroups1to5,respectively.MultivariatelinearregressionandMunro’scorrelationcoefficientwereemployedtodefertheformulas.RESULTS:Alinearcorrelationcouldbefoundinallgroupsexceptforpatientsingroup3.Forgroup1,BC=0.211×krf+5.904.Forgroup2,BC=0.456×krf+4.160.Forgroup4,BC=0.321×krf+5.219.Forgroup5,BC=0.337×krf+5.090.CONCLUSION:ThedevelopmentofnewformulasforRGPfittingenablesophthalmologiststoworkwithconfidenceandpreventsunnecessaryandfrequentlenstrials.Thecustomarylensfittingmethodsareneededtobereplacedbynewformulas,whichhelptosavetimeandcosts.
简介:目的探讨角膜绷带镜在原发性翼状胬肉切除联合结膜连续锁边缝合术后的应用效果。方法选取我院91例(91眼)原发性翼状胬肉患者,依据随机数字表法分组,均行翼状胬肉切除联合结膜连续锁边缝合术,对照组45例术中进行常规处理,观察组46例术后配戴角膜绷带镜,观察比较两组术后1d、5d、7d疼痛程度(VAS)评分,并统计角膜上皮愈合率及复发率。结果观察组术后1d、5d、7dVAS评分小于对照组,差异有统计学意义(t1=7.245,P1=0.000;t2=6.842,P3=0.000;t3=5.135,P3=0.000);观察组术后7d角膜上皮愈合率为97.83%(45/46),高于对照组80.00%(36/45),差异有22统计学意义(χ~2=5.680,P=0.017);观察组复发率为2.17%(1/46),低于对照组17.78%(8/45),差异有统计学意义(χ~2=4.587,P=0.032)。结论原发性翼状胬肉切除联合结膜锁边缝合术后配戴角膜绷带镜可促进角膜上皮愈合,减轻患者眼部疼痛程度,并降低复发率。
简介:AIM:Toexaminetheα-Galgeneexpressionanddistributioninthedifferentspecies/genusanddevelopingphaseanimalocularsurfacetissue.METHODS:α-Galbindingassaywerecarriedoutonvariousanimaleyesections.Photograph,slit-lampobservationonvariouseyeshowednormalcornealtransparence.RESULTS:Astrongα-Galexpressionininvertebratesandsomevertebratesoculartissue,butnoα-Galbindinginbirds,fishandmammal.α-Galexpressionchangeinthedevelopmentofmiceocularsurfacetissue(exceptsclera)anddisplaygenusdependencyinthedifferentmurineocularsurfacetissue.CONCLUSION:Thisstudyidentifiedspecificα-Galepitopesbindingareaintheocularsurfaceofseveralspeciesandmaysolvetheproblemthatnaiveocularsurfacemaybeusedasnaturalα-Galgeneknockoutmodel/highriskimmunologicrejectionmodelorocularsurfacescaffoldmaterial.
简介:目的:探讨超声乳化术中透明质酸酶对筋膜下麻醉的疗效。方法:该研究是一项双盲随机临床试验,在Nikookari眼科医院进行了长达5mo。行超声乳化术的候选患者中接受筋膜下麻醉的42眼随机分为均等的两组,分别应用20g/L的利多卡因溶液2mL+150U/mL透明质酸酶(LH),和单纯20g/L的利多卡因溶液2mL(L)。筋膜下注射15min后活动受抑制。患者和医生都非常满意,对于术后疼痛的抑制(视觉模拟评分,thevisualanalogueseale,VAS)也同样满意。统计学分析采用列联表(包括卡方检验或Fisher’s精确检验)和参数分析(独立样本t检验)。结果:活动抑制(33.3%'US4.8%,P=0.04)、患者满意度(85.7%掷57.1%,P=0.04)和医生满意度(87.5%US52.4%,P=0.02),LH组明显高于L组。VAS在相同组内明显较低(1.90±1.45傩3.00±1.55,P=0.04)。结论:利多卡因溶液+透明质酸酶的筋膜下麻醉明显使得眼部活动受限,提高了患者和医生的满意度,并减轻了术后疼痛。
简介:目的:研究高氧诱导的视网膜新生血管模型鼠中转录因子Islet-1的表达差异。方法:采用高氧诱导的方法制作鼠视网膜新生血管模型,运用荧光造影视网膜铺片及视网膜切片苏木精-伊红染色观察视网膜新生血管的形态。于小鼠出生后第7,12,14,17,26d取视网膜组织,采用Real-timePCR及Westernblot技术测定视网膜组织中Islet-1的表达水平。结果:模型组视网膜铺片及组织切片可见大量视网膜新生血管形成。小鼠出生后第7d,模型组与正常组视网膜组织中Islet-1表达水平无明显差异;小鼠出生后第12~14d,模型组视网膜组织中Islet-1表达水平明显上调;出生后17d,模型组视网膜组织中Islet-1表达水平仍高于正常组;出生后26d,随着视网膜新生血管消退,视网膜组织中Islet-1表达水平降至正常水平。结论:模型鼠视网膜新生血管发生过程中,持续缺氧的视网膜组织通过增加转录因子Islet-1的表达,从而诱导视网膜新生血管的发生。
简介:AIM:ToexploretheinhibitoryeffectofasustainedcyclosporinA(CsA)deliverymicrosphere(CsA-MS)onposteriorcapsularopacification(PCO)inrabbiteyesaftercataractextraction.·METHODS:TwentyNewZealandwhiterabbitsacceptedcataractextractionplusintraocularlensimplantationandtheirlefteyeswereintraoperativelyinjectedCsA-MSpreparedusingpolymerpolylactioglycolicacid(PLGA)asacarrierandtheirrighteyeswereinjectedwithemptyMS.Thechangesincornea,anteriorchamberreaction,intraocularpressure,PCOandCsAconcentrationinaqueoushumorwereexaminedpostoperativelyandalltheeyeswereenucleated3monthsaftersurgeryforhistopathologicalandmorphologicalexaminationwithlightmicroscopyandelectronmicroscopy.·RESULTS:Conjunctivalhyperemia,cornealedema,intraocularpressureandanteriorchamberresponseofexperimentalandcontroleyesweresimilar,whilePCOinCsAMSinjectedeyeswasgreatlyimprovedcomparedwiththatincontroleyes.PosteriorcapsulesinCsA-MSinjectedeyesweresmoothandlensepithelialcells(LEC)didnotproliferatesignificantly(P>0.05),whileLECinposteriorcapsuleofcontroleyeshaddifferentdegreesofproliferationandcorticalregeneration.LECinCsA-MSinjectedeyeswerenotfunctionallyactiveandunderwentapoptosis,whereasLECincontroleyeswerefunctionallyactive(F-test,P=0.025).Inaddition,thecornealultrastructureshowednodifferencesbetweenCsA-MSandMSinjectedeyes.CONCLUSION:CsA-MShashighbioavailabilityinrabbiteyesandcouldinhibitpostoperativePCOoccurrenceanddevelopmentduringthestudyperiod,suggestingthatCsA-MSmaybeapromising,effectiveandsafeadministrationroutetopreventPCOinclinic.
简介:目的:观察翼状胬肉切除联合自体球结膜瓣移植术后,局部应用1g/L环孢霉素A对胬肉复发的抑制效果。方法:对原发性翼状胬肉患者58例58眼进行前瞻性研究。所有入选眼均采用翼状胬肉切除联合自体球结膜瓣移植术,根据术后是否应用1g/L环孢霉素A滴眼液分为试验组和对照组。术后追踪随访1a,观察患者的胬肉复发率。结果:术后试验组基础泪液分泌试验(SchirmerⅠtest,SⅠt)结果明显优于对照组(9.93±1.59vs8.47±1.53mm/5min);SⅠt结果也显示1g/L环孢霉素A使患眼术后的泪液分泌量较术前有所增加。术后1a试验组与对照组的胬肉复发率分别为10%和39%。对照组并发症的出现率要高于试验组,差异具有统计学意义(P=0.029)。结论:翼状胬肉切除术后局部应用1g/L环孢霉素A滴眼液能够安全有效地降低胬肉的复发率。
简介:目的:研究富含半胱氨酸蛋白61(CCN1/Cyr61)在氧诱导小鼠视网膜新生血管(retinalneovascularization,RNV)中的表达及意义,探讨特异性抑制CCN1对RNV形成的抑制作用。方法:取C57BL/6J小鼠200只,随机分为对照组、高氧组、高氧对照组和CCN1治疗组,每组各50只。高氧对照组和CCN1治疗组分别玻璃体腔内注射空载体质粒和CCN1siRNA表达质粒。ADP酶视网膜铺片观察视网膜血管形态,HE染色计数突破视网膜内界膜的新生血管内皮细胞核数,免疫组织化学、Westernblot和RT-PCR法检测CCN1蛋白及mRNA的表达情况。结果:高氧组和高氧对照组视网膜可见大片无灌注区和大量突破内界膜的新生血管内皮细胞核(25.25±1.26个;23.12±1.16个),CCN1治疗组较高氧组和高氧对照组的无灌注区及新生血管内皮细胞核数(8.47±1.15个)明显减少。高氧组和高氧对照组较对照组相比,CCN1蛋白及mRNA表达显著增高,CCN1治疗组较高氧组和高氧对照组显著减弱,均有统计学意义(均为P〈0.05)。结论:CCN1的异常表达可能与RNV形成密切相关,特异性抑制CCN1能有效抑制RNV的形成,为预防和治疗ROP提供新的思路及对策。
简介:目的提升我科住院患者眼药应用知识及行为的知晓率,提高我科住院患者满意度。方法成立QCC小组,运用品管圈活动的管理方法对我科住院患者眼药应用知识及行为的掌握率低进行原因分析、现状调查、设立目标、制定对策并组织实施。结果通过对开展QCC活动前后的调查结果进行分析,住院患者的眼药应用知识及行为掌握率由原来的40%提升到80%,目标达成率为140%。结论通过品管圈活动的开展,利用先进的管理方法,护士有针对性地对患者进行形式多样的健康宣教,使眼科住院患者能正确掌握眼药应用知识及行为,安全地使用眼药,保证患者身体健康。提高了我科住院患者的满意度,延伸护理服务内容,塑造了优质护理服务的良好形象,激活了护士的学习和工作积极性,并提高了分析问题、解决问题能力及团队合作精神。
简介:AIM:ToinvestigatetheregulationofEaf2proteininmouselenscellsapoptosisinducedbyultraviolet(UV)radiation.METHODS:AneyeofEaf2geneknockoutmiceornormalcontrolmicewasexposedtoUVradiation,andtheotheronewasnon-exposed.AlloflenseswereanalyzedbyTUNELandcaspase3activityassaystodeterminethedifferenceoftheapoptosisinducedbyUVradiation.Inaddition,exposedandnon-exposedlenseswereanalyzedbyquantifiedp53expressionandreal-timereversetranscription-polymerasechainreaction(RT-PCR)ofBax,Bid,Apaf-1,PumaandNoxa,tocompareEaf2geneknockoutmiceandnormalcontrolmice.RESULTS:UVradiationcausedapoptosisoflenscellsinnormalcontrolmiceandEaf2knockoutmice.Activityofcaspase3wassignificantlyhigherinnormalcontrolmicethanEaf2knockoutmice.Expressionofp53proteinwassignificantlyhigherinlensesexposedtoUVradiationthannonexposedlenses,butwassimilarbetweenEaf2geneknockoutmiceandnormalcontrolmiceinthesameUVcondition.AfterexposingtoUVradiation,theanalysisofreal-timeRT-PCRdemonstratedthatmRNAlevelsofPumaandNoxaweresignificantlyhigherinlensesofnormalcontrolmicethanEaf2geneknockoutmice,andthatmRNAlevelsofBax,BidandApaf-1werenotsignificantlydifferentbetweengeneknockoutmiceandnormalcontrolmice.CONCLUSION:Eaf2increaseslenscellsapoptosisinducedbyultravioletradiation.AndEaf2up-regulatesexpressionofthePumaandtheNoxatoactonlenscellsapoptosisafterUVradiation.
简介:目的:通过对视网膜脱离患者术前、术后的血流动力学研究及视网膜功能的了解,判断视网膜脱离患者的术后恢复情况,并探讨两种检测方法的临床价值。方法:对我院62例孔源性视网膜脱离患者,通过彩色多普勒(CDI)检测视网膜中央动脉(CRA)的收缩期峰值流速(Vmax)、舒张末期流速(Vmin)、阻力指数(RI);多焦视网膜电图(mfERG)分别对视网膜脱离患者的术前、术后进行检测,并以对侧正常眼作对照组。结果:CDI术前患眼与对照眼的CRA各项指标比较,差异无统计学意义。术后2wk视网膜脱离眼CRA的Vmax,Vmin均较术前降低,RI增高,差异有统计学意义(P〈0.05)。视网膜脱离术后患者脱离区mfERG的a波、b波振幅密度均明显高于术前,潜伏期比手术前明显缩短,有统计学意义(P〈0.05)。结论:通过mfERG,CDI的联合检测能及时了解视网膜脱离术后的视网膜复位情况及硅胶海绵垫压后CRA的血流情况,从而避免视网膜脱离术后视网膜部分复位不良,巩膜因缺血引起局部坏死等情况发生。