简介：Thedamageofhumancornealcellsencounterwiththeproblemofavailabilityofcornealcellsforreplacement.Limitationofthesourceofcornealcellshasbeenrealized.Anattemptofdevelopmentofcornealepithelial-likecellsfromthehumanskin-derivedprecursor(hSKPs)hasbeenmadeinthisstudy.Combinationofthreeessentialgrowthfactors:epidermalgrowthfactor(EGF),keratinocytegrowthfactor(KGF)andhepatocytegrowthfactor(HGF)coulddemonstratesuccessfullyinductionofhSKPstodifferentiationintocornealcells.Theinducedcellsexpressedtheappearanceofmarkersofcornealepithelialcellsasshownbythepresenceofkeratin3(K3)byantibodylabelandWesternblotassay.TheK3geneexpressionofinducedhSKPscellsasshownbyreversetranscription-polymerasechainreaction(RT-PCR)technologywasalsodemonstrated.ThepresenceofthesemarkersatbothgeneandproteinlevelscouldleadtoourconclusionthatthedirectionaltransdifferentiationofhSKPscellsintocornealepithelialcellswassuccessfullydoneunderthiscellinductionprotocol.Thefindingshowsanewlyavailablestemcellsourcecanbeobtainedfromeasilyavailableskin.Cellsfromautologoushumanskinmightbeusedforcornealdisordertreatmentinfutureclinicalapplication.

简介：目的总结45例60岁以上老年患者行乙状窦后进路桥小脑角手术的围手术期治疗经验.方法对我科1991年1月至2000年1月行该手术治疗的45例老年患者进行回顾性分析.其中三叉神经痛37例;舌咽神经痛3例;半面痉挛4例;桥小脑角胆脂瘤1例.术前检查异常的有:心电图12例,占26.67%;胸部X线6例,占13.3%;颅脑CT2例,占4.44%,高血压病9例,占20%;糖尿病5例,占11.1%;肝功能异常3例,占6.67%;白细胞低2例,占4.44%;血小板减少2例,占4.44%.结果所有患者均顺利完成手术,术后无严重并发症,均治愈出院,随访2～9年,症状无复发.结论老年患者虽然体质较弱,检查结果异常多,但只要正确处理围手术期的异常,提高手术技巧,老年患者完全能够耐受此类手术并顺利康复.

简介：目的探讨超声联合人工晶体植入术治疗老年性白内障的临床疗效。方法选取2015年6月至2016年6月我院眼科收治的老年白内障患者83例作为研究对象。所有患者均接受超声乳化联合人工晶体植入术治疗,观察83例白内障患者治疗效果及治疗前后视力改善以及并发症发生情况。结果83例患者均成功接受超声乳化联合人工晶体植入术治疗,围手术期未发生后囊膜破裂、玻璃体脱出、角膜失代偿、视网膜脱落等严重并发症,术后轻度炎症2例,轻度角膜水肿1例,经对症治疗后痊愈;患者治疗后矫正视力、前房深度、房角开放程度均较治疗前明显改善,P〈0.05,具有统计学意义。结论采用超声乳化联合人工晶体植入术治疗老年白内障疗效显著,改善患者视力情况,并且手术安全性较高,具有临床应用及推广价值。

简介：目的:探讨中老年糖尿病视网膜病变(diabeticretinopathy,DR)患者DR严重程度与血清HbA1c、TNF-α水平的相关性。方法:选取200例糖尿病患者,其中单纯糖尿病患者(DM组)60例,糖尿病伴非增殖期视网膜病变组(NPDR组)80例和糖尿病伴增殖期视网膜病变组(PDR组)60例,并选取80例健康者作为正常对照组(NC组)。观察患者的体检指标,并检测患者的空腹血糖(fastingplasmaglucose,FPG)、餐后2h血糖(2hPG)、血脂、血清糖化血红蛋白(HbA1c)、血清肿瘤坏死因子-α(tumornecrosisfactor,TNF-α)及泪液TNF-α。结果:(1)四组受试者的体质量指数(bodymassindex,BMI)、FPG、2hPG、总胆固醇(totalcholesterol,TC)、甘油三酯(trilycerides,TG)、高密度脂蛋白(highdensitylipoprotein,HDL-C)、低密度脂蛋白(low-densitylipoprotein,LDL-C)等指标比较,差异均具有统计学意义(F=37.211、395.421、42.515、7.385、121.764、121.568、34.567,均P<0.05)。DM、NPDR、PDR三组患者的BMI、FPG、2hPG、TC、TG、HDL-C、LDL-C等指标水平均高于NC组,差异有统计学意义(P<0.05);NPDR组患者的BMI、FPG、2hPG、TC、TG、HDL-C、LDL-C等指标水平均高于PDR组,差异有统计学意义(P<0.05)。(2)四组受试者血清TNF-α、泪液TNF-α及血清HbA1c水平比较,差异均具有统计学意义(F=337.256、215.471、40.522,均P<0.05);DM、NPDR、PDR三组患者的血清TNF-α、泪液TNF-α和血清HbA1c水平均高于NC组,差异有统计学意义(P<0.05);NPDR、PDR两组患者的血清TNF-α、泪液TNF-α和血清HbA1c水平均高于DM组,差异有统计学意义(P<0.05);PDR组患者的血清TNF-α、泪液TNF-α及血清HbA1c水平均高于NPDR组,差异有统计学意义(P<0.05)。(3)泪液TNF-α与血清TNF-α呈正相关(r=0.289,P<0.01);泪液TNF-α与血清HbA1c呈正相关(r=0.375,P<0.01)。结论:中老年DR患者泪液TNF-α水平高于正常人,且随着视网膜病变的加重,泪液TNF-α水平升高。泪液TNF-α与血清TNF-α、HbA1c呈正相关。

简介：AIM:Toestablishanuntransfectedhumancornealstromal(HCS)celllineandcharacterizeitsbiocompatibilitytoacellularporcinecornealstroma(aPCS).·METHODS:PrimaryculturewasinitiatedwithapurepopulationofHCScellsinDMEM/F12media(pH7.2)containing20%fetalbovineserumandvariousnecessarygrowthfactors.Theestablishedcelllinewascharacterizedbygrowthproperty,chromosomeanalysis,tumorigenicityassay,expressionofmarkerproteinsandfunctionalproteins.Furthermore,thebiocompatibilityofHCScellswithaPCSwasexaminedthroughhistologicalandimmunocytochemistryanalysesandwithlight,electronmicroscopies.·RESULTS:HCScellsproliferatedtoconfluence2weekslaterinprimarycultureandhavebeensubculturedtopassage140sofar.AcontinuousuntransfectedHCScelllinewithapopulationdoublingtimeof41.44hoursatpassage80hasbeendetermined.Resultsofchromosomeanalysis,morphology,combinedwiththeresultsofexpressionofmarkerproteinandfunctionalproteinssuggestedthatthecellsretainedHCScellproperties.Furthermore,HCScellshavenotumorigenicity,andwithexcellentbiocompatibilitytoaPCS.·CONCLUSION:Anuntransfectedandnon-tumorigenicHCScelllinehasbeenestablished,andthecellsmaintainedpositiveexpressionofmarkerproteinsandfunctionalproteins.Thecellline,withexcellentbiocompatibilitytoaPCS,mightbeusedforinvitroreconstructionoftissue-engineeredHCS.

简介：AIM:Toinvestigatethediffusioncharacteristicsofwaterofopticnerveandopticradiationinhealthyadultsanditsrelatedfactorsbydiffusiontensorimaging（DTI）at3T.METHODS:Atotalof107healthyvolunteersperformedheadconventionalMRIandbilateralopticnerveandopticradiationDTI.TheprimarydataofDTIwasprocessedbypost-processingsoftwareofDTIstudio2.3,obtainingfractionalanisotropyvalue,meandiffusivityvalue,principalenginevalue,orthogonalenginevaluebymeasuring,andanalyzedbytheSPSS13.0statisticalsoftware.RESULTS:Thebilateralopticnerveandopticradiationfiberspresentedgreencolorindirectionalencodedcolor（DEC）mapsandpresentedhighsignalinfractionalanisotropy（FA）maps.TheFAvalueoftheleftopticnervewas0.598±0.069andtherightwas0.593±0.065;themeandiffusivity（MD）valueoftheleftopticnervewas（1.324±0.349）×10-3mm2/sandtherightwas（1.312±0.350）x10-3mm2/s;theprincipalenginevalue(λ?)oftheleftopticnervewas（2.297±0.522）×10-4mm2/sandtherightwas（2.277±0.526）×10-3mm2/s;theorthogonalenginevalue（λ⊥）oftheleftopticnervewas（0.838±0.285）×10-3mm2/sandtherightwas（0.830±0.280）×10-3mm2/s;theFAvalueoftheleftopticradiationwas0.636±0.057andtherightwas0.628±0.056;themeandiffusivity（MD）valueoftheleftopticradiationwas（0.907±0.103）×10-3mm2/sandtherightwas（0.889±0.125）×10-3mm2/s;theprincipaleigenvalue(λⅡ)oftheleftopticradiationwas（1.655±0.210）×10-3mm2/sandtherightwas（1.614±0.171）×10-3mn2/s;theorthogonalenginvalue（λ⊥）oftheleftopticradiationwas（0.531±0.103）×10-3mm2/sandtherightwas（0.524±0.152）×10-3m

简介：目的探讨护理干预对老年白内障合并青光眼患者疼痛评分、并发症及护理满意度的影响。方法选取我院2015年4月至2017年4月收治的80例老年白内障合并青光眼患者（80眼）,依据护理方法将这些患者分�

简介：AIM:Todemonstratethemorphologyandstructureofinvitroreconstructedtissue-engineeredhumancornealepithelium(TE-HCEP)withseedercellsfromanuntransfectedHCEPcellline.·METHODS:TheTE-HCEPswerereconstructedinvitrowithseedercellsfromanuntransfectedHCEPcellline,andscaffoldcarriersofdenudedamnioticmembrane(dAM)inair-liquidinterfaceculturefor3,5,7and9days,respectively.Thespecimenswereexaminedwithhematoxylin-eosin(HE)stainingofparaffin-section,immunocytochemicalstaining,scanningandtransmissionelectronmicroscopy.·RESULTS:DuringinvitroreconstructionofTE-HCEP,HCEPcellsformeda3-4,6-7and8-10layersofanHCEP-likestructureondAMsinair-liquidinterfaceculturefor3,5and7days,respectively.Butthecellsdeceasedto5-6layersandthestructureofstraifiedepitheliumbecamelooseatday9.Andthecellsmaintainedpositiveexpressionofmarkerproteins(keratin3andkeratin12),cell-junctionproteins(zonulaoccludens-1,E-cadherin,connexin43andintegrinβ1)andmembranetransportproteinofNa+-K+ATPase.TheHCEPcellsinTE-HCEPwererichinmicrovillionapicalsurfaceandestablishednumerouscell-cellandcell-dAMjunctionsatday5.·CONCLUSION:ThemorphologyandstructureofthereconstructedTE-HCEPweresimilartothoseofHCEPinvivo.TheHCEPcellsinthereconstructedTE-HCEPmaintainedthepropertiesofHCEPcells,includingabilitiesofformingintercellularandcell-extracellularmatrixjunctionsandabilitiesofperformingmembranetransportation.TheuntransfectedHCEPcellsanddAMscouldpromisinglybeusedinreconstructionHCEPequivalentforclinicalcornealepitheliumtransplantation.

简介：AIM:Toevaluatetheaccuracyofsphericalequivalent(SE)estimatesofadouble-passsystemandtocompareitwithretinoscopy,subjectiverefractionandatablemountedautorefractor.METHODS:Non-cycloplegicrefractionwasperformedon125eyesof65healthyadults(age23.5±3.0years)fromOctober2010toJanuary2011usingretinoscopy,subjectiverefraction,autorefraction(AutokeratorefractometerTOPCONKR-8100,Japan)andadoublepasssystem(OpticalQualityAnalysisSystem,OQAS,VisiometricsS.L.,Spain).Nineconsecutivemeasurementswiththedouble-passsystemwereperformedonasubgroupof22eyestoassessrepeatability.ToevaluatethetruenessoftheOQASinstrument,theSElaboratorybiasbetweenthedoublepasssystemandtheothertechniqueswascalculated.RESULTS:TheSEmeancoefficientofrepeatabilityobtainedwas0.22D.SignificantcorrelationscouldbeestablishedbetweentheOQASandtheSEobtainedwithretinoscopy(r=0.956,P<0.001),subjectiverefraction(r=0.955,P<0.001)andautorefraction(r=0.957,P<0.001).ThedifferencesinSEbetweenthedouble-passsystemandtheothertechniquesweresignificant(P<0.001),butlackedclinicalrelevanceexceptforretinoscopy;Retinoscopygavemorehyperopicvaluesthanthedouble-passsystem-0.51±0.50Daswellasthesubjectiverefraction-0.23±0.50D;Moremyopicvalueswereachievedbymeansofautorefraction0.24±0.49D.CONCLUSION:Thedouble-passsystemprovidesaccurateandreliableestimatesoftheSEthatcanbeusedforclinicalstudies.Thistechniquecandeterminethecorrectfocuspositiontoassesstheocularopticalquality.However,ithasarelativelysmallmeasuringrangeincomparisonwithautorefractors(-8.00to+5.00D),andrequirespriorinformationontherefractivestateofthepatient.

简介：AIM:ToInvestigatetheeffectsoftransforminggrowthfactorβ2(TGF-β2)andconnectivetissuegrowthfactor(CTGF)ontransdifferentiationofhumanlensepithelialcells(HLECs)culturedinvitroandsynthesisofextracellularmatrix(ECM).METHODS:HLECsweretreatedwithTGF-β2(0,0.5,1.0,5,10μg/L)andCTGF(0,15,30,60,100μg/L)fordifferenttimes(0,24,48,72h)invitroandtheexpressionofα-smoothmuscleactin(α-SMA),themaincomponentoftheextracellularmatrixtypeⅠcollagen(Col-1)andfibronectin(Fn)weremeasuredbyusingreal-timepolymerasechainreaction(PCR)andwestern-blot.RESULTS:TGF-β2andCTGFsignificantlyincreasedexpressionofα-SMAmRNAandprotein(P<0.05,P<0.001),FnmRNAandprotein(P<0.001),Col-1mRNAandprotein(P<0.001).TGF-β2couldinduceHLECsexpressionofCTGFmRNAandproteinindosedependentmanner(P<0.05,P<0.001).TGF-β2andCTGFcouldinduceHLECstoexpressα-SMA,FnandCol-1intime-dependentmanner.EachtimeofTGF-β2andCTGFinducedHELCsexpressionofα-SMA,Fn,Col-1mRNAandproteinwassignificantincreasecomparedwithcontrol(P<0.05,P<0.001).CONCLUSION:TGF-β2andCTGFcouldinduceHLECsepithelialmesenchymaltransitionandECMsynthesis.