简介：目的研究视网膜色素上皮(retinalpigmentepithelium,RPE)细胞中端粒酶逆转录酶(telomerasereversetranscriptase,TERT)表达及其反义寡核苷酸(antisenseolgonucleotides,ASODN)对其表达和细胞增生的抑制作用,为增生性玻璃体视网膜病变(prliferativevitreoretinopathy,PVR)治疗探索基因治疗新途径.方法体外培养兔眼RPE细胞,在不同时间采用链霉亲合素-生物素化过氧化物酶复合物(strepoavidin-biotin-enzymecomplex,SABC)免疫组织化学法检测TERT的表达;不同浓度的TERTASODN和正义寡核苷酸(senseoligodeoxynucleotides,SODN)分别作用于体外培养的RPE细胞,采用免疫组织化学方法检测TERT的表达;四唑盐比色法(MTT)检测在不同浓度的TERTASODN和SODN作用下RPE细胞生长活性及其生长抑制率.结果体外培养兔眼RPE细胞可表达TERT,在5,10μmo/LASODN作用下,TERT的表达明显受抑制;TERTASODN能明显抑制RPE细胞增生活性,并呈剂量依赖性.结论TERTASODN能序列特异性地抑制RPE细胞TERT表达和增生活性.

简介：目的:探讨玻璃棒法按摩睑板腺与常规疗法联合治疗睑板腺功能障碍(MGD)的临床疗效。方法:回顾性分析2016-08/2017-06我院收治的MGD患者130例220眼,根据治疗方式不同进行分组,其中给予常规治疗即1g/L氟米龙滴眼液联合自行热敷的患者设为对照组(65例112眼),给予圆头玻璃棒按摩睑板腺联合常规疗法的患者设为联合组(65例108眼)。比较两组患者治疗前后眼表疾病指数量表(OSDI)评分、泪膜破裂时间(BUT)、基础泪液分泌试验(S|t)、角膜荧光素染色(CFS)评分、睑缘评分、睑板腺分泌物性状评分和眼压情况及临床治疗有效率。结果:治疗前,两组患者OSDI评分、BUT、S|t、CFS评分、睑缘评分、睑板腺分泌物性状评分、眼压情况差异均无统计学意义(P>0.05)。治疗2wk后,联合组患者OSDI、CFS、睑缘及睑板腺分泌物性状评分均低于对照组,BUT和S|t均大于对照组,差异均有统计学意义(P<0.01);两组患者眼压均有所升高,但均≤21mmHg,两组间差异无统计学意义(P>0.05)。治疗2wk后,联合组总有效率为92.6%(100/108),对照组总有效率为78.6%(88/112),差异具有统计学意义(P<0.05)结论:玻璃棒法按摩睑板腺与常规疗法联合治疗MGD能够有效改善眼表症状和睑板腺分泌功能,促进泪液分泌,提高临床治疗有效率。

简介：AIM:Todescribethecharacteristicsofmodulationtransferfunction(MTF)ofanteriorcornealsurface,andobtainthethenormalreferencerangeofMTFatdifferentspatialfrequenciesandopticalzonesoftheanteriorcornealsurfaceinmyopes.·METHODS:Fourhundredeyesfrom200patientswereexaminedunderSIRIUScornealtopographysystem.PhoenisanalysissoftwarewasappliedtosimulatetheMTFcurvesofanteriorcornealsurfaceatverticalandhorizontalmeridiansatthe3,4,5,6,7mmopticalzonesofcornea.TheMTFvaluesatspatialfrequenciesof5,10,15,20,25,30,35,40,45,50,55and60cycles/degree(c/d)wereselected.·RESULTS:TheMTFcurveofanteriorcornealsurfacedecreasedrapidlyfromlowtointermediatefrequency(0-15cpd)atvariousopticalzonesofcornea,thevaluedecreasedto0slowlyathigherfrequency(>15cpd).Withtheincreaseoftheopticalzonesofcornea,MTFcurvedecreasedgradually.3)Intherangeof3mm-6mmopticalzonesofthecornea,theMTFvaluesmeasuredathorizontalmeridianweregreaterthanthecorrespondingvaluesathorizontalmeridianofeachspatialfrequency,thedifferencewasstatisticallysignificant(P<0.05).At7mmopticalzonesofcornea,theMTFvaluesmeasuredathorizontalmeridianwerelessthanthecorrespondingvaluesatverticalmeridianat10-60spatialfrequencies(cpd),andthedifferencewasstatisticallysignificantin25,30,35,40,45,50cpd(P<0.05).·CONCLUSION:MTFcanbeusedtodescribetheimagingqualityofopticalsystemsatanteriorcornealsurfaceobjectivelyindetail.

简介：目的观察超声乳化联合房角分离术对原发性闭角型青光眼患者眼压及视功能的影响。方法选取2016年6月-2017年1月我院治疗的86例（86眼）原发性闭角型青光眼合并白内障患者作为研究对象,运用随机数表法将入选者分为对照组与观察组,均43例（43眼）。观察组实施超声乳化联合房角分离术治疗,对照组应用超声乳化术治疗。观察两组治疗前、后眼压、视功能及并发症发生情况。结果治疗前两组眼压、视力对比,差异无统计学意义（P〉0.05）;治疗后观察组眼压低于对照组,视力优于对照组,差异有统计学意义（P〈0.05）;术后观察组相关并发症发生率显著少于对照组,差异有统计学意义（P〈0.05）。结论超声乳化与房角分离术联合应用有助于控制原发性闭角型青光眼患者眼压,提升患者视功能,降低术后并发症,加快患者康复进程。

简介：AIM:ToinvestigatetheinterferingeffectofY-27632,aROCK-Iselectiveinhibitor,onthesignaltransductionpathwayoftransforminggrowthfactor-β1(TGF-β1)inocularTenoncapsulefibroblasts(OTFS)invitro.METHODS:AfterOTFSfrompassages4to6invitrowereinducedbyTGF-β1andthentreatedbyY-27632,thechangesoftheOTFScellcycleswereanalyzedviaflowcytometry,andtheproteinsexpressionoftheα-smoothmuscularactin(α-SMA),connectivetissuegrowthfactor(CTGF),collagenIwerecalculatedbyWesternblot.AfterOTFStreatedbythedifferentconcentrationsofY-27632,theexpressionlevelsoftheα-SMA,CTGFandcollagenImRNAwereassayedbyRT-PCR.RESULTS:Y-27632hadnomarkedlyeffectontheOTFScellcycles.AftertreatedbyTGF-β1,OTFSinG1periodsignificantlyincreased.ThecellcyclesdistributionbybothTGF-β1andY-27632hadnoremarkabledifferencefromthatincontrolgroup.Y-27632significantlyinhibitedtheproteinsexpressionsofbothα-SMAandCTGF,whiletosomeextentinhibitedthatofcollagenI.TGF-β1significantlypromotedtheproteinsexpressionsofα-SMA,CTGFandcollagenI.AfterOTFStreatedbybothTGF-β1andY-27632,ofα-SMA,theproteinexpressionwassimilarwiththatincontrolgroup(P=0.066>0.05),buttheproteinexpressionofCTGForcollagenI,respectively,wassignificantlydifferentfromthatincontrolgroup(P=0.000<0.01).Thedifferencesofexpressionsoftheα-SMA,CTGFandcollagenImRNAin30,150,750μmol/LY-27632groupwerestatisticallysignificant,comparedwiththoseincontrolgroup,respectively(α-SMA,P=0.002,0.000,0.000;CTGF,P=0.014,0.002,0.001;collagenI,P=0.003,0.002,0.000).CONCLUSION:BlockingtheRho/ROCKsignalingpathwaybyusingofY-27632couldinhibitthecellularproliferationandtheexpressionofbothCTGFandα-SMAwhateverOTFSinducedbyTGF-β1ornot.Y-27632suppressedtheexpressionofcollagenImRNAwithoutinduction.

简介：AIM:Toinvestigatethelevelsofserumsolubleintercellularadhesionmolecules-1(sICAM-1)andneutrophilicexpressionofCD18inpatientswithvariousstagesofdiabeticretinopathyandtodeterminetheirdifferentexpressionpatterninthedevelopmentofdiabeticretinopathy(DR).·METHODS:LevelsofserumsICAM-1andCD18onthesurfaceofneutrophileweremeasuredin41DRpatients,theywereclassifiedinthreesubgroupsaccordingtothestageofretinopathyasdeterminedbyfund’sophthalmoscopy;10controlsubjectswerealsostudied.sICAM-1weremeasuredbyenzyme-linkedimmunosorbentassayandCD18byflowcytometry.·RESULTS:TheneutrophilicCD18expressionandserumsICAM-1levelwereallsignificantlyelevatedinalldiabeticsubgroupscomparedtocontrolsubjects(P<0.01).ThedifferencesofCD18andsICAM-1amongthediabeticsubgroupsweresignificantinCD18butnotinsICAM-1.TheprogressionofretinopathywasassociatedwithanincreasebothinCD18andinsICAM-1levelsbysimplecorrelationanalysis(β=0.74,P<0.001;β=0.38,P<0.01,respectively).ButstepwisemultipleregressionanalysisrevealedthatonlyCD18wasindependentdeterminantofretinopathy(β=1.04,P<0.01).·CONCLUSION:OurresultsconfirmthecontributionofendothelialandneutrophilicactivationinthedevelopmentofDRasindicatedbyincreasedlevelsofCD18andsICAM-1.However,adirectimplicationofCD18andICAM-1intheprogressionofDRcanbesupportedonlyintheCD18butnotICAM-1.CD18andICAM-1mayplaydifferentroleinthedevelopmentofdiabeticretinopathy.

简介：·AIM:Toexploretheeffectofimmunizationwithcopolymer-1(COP-1)andretinalstemcells(RSCs)transplantationoninterferon-gamma(IFN-γ)levelsinaratexperimentalglaucomamodel.·METHODS:Anexperimentalglaucomawasinducedbyargonlaserphotocoagulationoftheepiscleralveinsandlimbalplexusintherighteyeofrats.Immediatelyfollowingglaucomainduction,ratswereimmunizedwithCOP-1.RSCswereculturedandtransplantedintravitreallyintotheeyesofglaucomamodelanimals1weekpost-lasertreatment.Sixexperimentalgroupswereused:COP-1/RSC,PBS/RSC,COP-1/PBS,PBS/PBS,glaucomamodelgroup,andanormalcontrolgroup.TheconcentrationofIFN-γinaqueoushumor(AH)andserumwasmeasuredbyenzyme-linkedimmunosorbentassay(ELISA)ineachofthesixgroups.Retinalganglioncell(RGC)survivalwasassessedbyquantifyingapoptosisusingHoechststaining.·RESULTS:ConcentrationsofIFN-γinAHandserumofratsthathadundergoneglaucomainductionwerehigherthanthoseofnon-inducedcontrolrats.TheconcentrationsofIFN-γinAHandserumoftheCOP-1/RSCstreatedgroupweredeterminedtobe2371.9ng/Land710.9ng/L,respectively,whichweresignificantlylowerthanthoseintheothertreatedgroups(P<0.05).Infact,IFN-γlevelsinthedualtreatedgroupwerereducedtobackgroundlevels.TheCOP-1/RSCgrouphadlowernumberofapoptoticRGCsthantheotherthreeexperimentalgroups(P<0.05).·CONCLUSION:ThereducedlevelsofIFN-γinAHandserumoftheCOP-1/RSCgroupmayberelatedtosynergisticeffectsbetweenRSCstransplantationandCOP-1immunemodulation.ItislikelythatthelowerlevelsofIFN-γpreventedRGCsglaucomatousapoptosis.·