简介:AIM:Todeterminetheproliferativepotentialandthemaintenanceofstemcellactivityinstoredhumanlimbaltissues,andcorrelatethiswiththepreservationtime,cellviabilityandtheexpressionofstemcellmarkers.METHODS:Thirtylimbalrimsweresplitinto4partsandstoredincornealpreservationmediumat4℃for0,1,4,or7days.ThelimbalstemcellandmitoticmarkersP63,CK19,proliferatingcellnuclearantigen(PCNA),andKi67weredeterminedbyimmunohistochemicalstaining.Theproliferativepotentialoflimbalepithelialcellswasassessedbycellviability,theabilityofgeneratingstratifiedepithelium,andcolonyformingassay.RESULTS:Thestoredtissuesmaintainedlimbalstratifiedstructureto7daysandexhibitedcomparableexpressionlevelofstemcellandmitoticmarkers.Theproportionofviablecellsdecreasedwiththeprolongedpreservationtime,whilecolonyformingefficiencydecreasedfromthe1stdayanddisappearedatthe4thday.Wheninoculatedonamnioticmembrane,thecellspreservedfor1dayformedastratifiedepithelium,whilethecellsfrom4days’preservationformedadiscontinuouslayer.CONCLUSION:Thecolonyformingefficiencyoflimbalepithelialstem/progenitorcellsdecreasedrapidlywiththeincreasingpreservationtime,whiletheexpressionlevelofmarkersandcapacityofformingepithelialmonolayeronamnioticmembranedecreasedgradually.Thelimbalepithelialstemcellslosttheirfunctionearlierthanthelostexpressionlevelofstemcellmarkers.Thismayhelpustobetterchoosetheappropriatepreservationgraftsforfuturelimbalstemcelltransplantation.
简介:目的探讨榄香烯对人喉癌Hep-2细胞生长的影响和作用机制.方法用四甲基偶氮唑盐法(methylthiazolyltetrazoliumassay,MTT)测定榄香烯对喉癌细胞的抑制作用;以透射电镜来观察其形态学变化;采用DNA末端标记法(terminaldeoxynucleotidy1transferasemediateddeoxyuridinetriphosphatenickendlabelingmethod,TUNEL)研究细胞凋亡数;用免疫组化分析bcl-2蛋白在Hep-2细胞中的表达.结果榄香烯明显抑制Hep-2细胞的生长;透射电镜观察到染色质浓缩,沿着核膜排列,形成不同形状和大小的块状;DNA末端标记法说明,凋亡细胞数随药物浓度的提高逐渐增高;免疫组化结果提示榄香烯能使Hep-2细胞bcl-2蛋白表达降低.结论榄香烯能够抑制喉癌细胞的生长,其抑制作用与细胞凋亡有关,作用机制可能与bcl-2表达降低有关.
简介:AIM:Toaddressissuesininteroperabilitybetweendifferentfundusimagesystems,weproposedawebeyepicturearchivingandcommunicationsystem(PACS)frameworkinconformancewithdigitalimagingandcommunicationinmedicine(DICOM)andhealthlevel7(HL7)protocoltorealizefundusimagesandreportssharingandcommunicationthroughinternet.METHODS:Firstly,atelemedicine-basedeyecareworkflowwasestablishedbasedonintegratingthehealthcareenterprise(IHE)EyeCaretechnicalframework.Then,abrowser/serverarchitectureeye-PACSsystemwasestablishedinconformancewiththewebaccesstoDICOMpersistentobject(WADO)protocol,whichcontainsthreetiers.RESULTS:Inanyclientsysteminstalledwithwebbrowser,clinicianscouldlogintheeye-PACStoobservefundusimagesandreports.Multipurposeinternetmailextensions(MIME)typeofastructuredreportissavedaspdf/htmlwithreferencelinktorelevantfundusimageusingtheWADOsyntaxcouldprovideenoughinformationforclinicians.Somefunctionsprovidedbyopen-sourceOviyamcouldbeusedtoquery,zoom,move,measure,viewOICOMfundusimages.CONCLUSION:Suchwebeye-PACSincompliancetoWADOprotocolcouldbeusedtostoreandcommunicatefundusimagesandreports,thereforeisofgreatsignificanceforteleophthalmology.
简介:目的:用Tono-Pen眼压计测量人眼角膜中央、旁中央、角巩缘部位眼压值,比较不同部位值的差异及相关性。方法:正常角膜用Tono-Pen眼压计依次测量角膜中心、旁中心、角膜缘眼压值,方差分析不同部位眼压的差异,分析结果的相关性。结果:Tono-Pen眼压计检测得出的眼压平均值角膜中央为16.28±2.73mmHg,旁中央为16.33±2.69mmHg,角巩缘为16.58±2.58mmHg.角膜中心与旁中心的相关系数r=0.966,P=0.000,角膜中心与角膜缘的相关系数为r=0.897.P=0.000,角膜旁中心与角膜缘的相关系数为r=0.910,P=0.000。不同部位眼压值差异没有显著性(F=0.093,P=0.913〉0.05)。结论:不同部位眼压值密切相关,差异没有统计学意义。Tono-Pen眼压计测量不同部位眼压均可取得较为一致的结果。
简介:目的探讨健康体检中青光眼筛查方法及结果分析。方法采用同顾分析方法对我院健康体检数据库资料进行分析。结果在121697人健康体检中,发现青光眼1381例,患病率为1.14%,原发性闭角型青光眼(PACG)810例,患病率为0.67%,原发性开角型青光眼(POAG)476例,患病率为0.39%,正常眼压性青光眼(NTG)44例,患病率为0.04%,继发性青光眼(SG)51例、患病率为0。04%。正常大陷门者112例,术发现先天性青光眼。结论青光眼筛查方法应简易、快捷、价廉及有效的。对健康体检作青光眼筛查足必要的并且足可行的,而且在健康体检数据中为所有受检建立健康档案,这对青光眼患者诊断、治疗及评估有十分重要意义,特别对可疑青光眼受检者有一个长期跟踪观察及对比机会。
简介:目的:探讨miR-181在白内障晶状体组织中的表达情况,及其对人晶状体上皮细胞凋亡的调控机制。方法:利用Realtimeq-PCR方法,检测年龄相关性白内障患者晶状体前囊膜和人晶状体上皮细胞凋亡模型中miR-181的表达情况;利用Lipofectamine2000瞬时转染miR-181mimic和inhibitor调节人晶状体上皮细胞中miR-181的表达,利用Realtimeq-PCR方法验证转染效率,利用流式细胞仪检测细胞凋亡率的变化。结果:与对照组相比,年龄相关性白内障患者晶状体前囊膜组和人晶状体上皮细胞凋亡模型组,miR-181的表达显著升高;miR-181mimic转染组,miR-181的表达显著升高,细胞凋亡率显著升高;miR-181inhibitor转染组,miR-181的表达显著降低,细胞凋亡率显著降低,差异均有统计学意义(P〈0.01)。结论:miR-181在年龄相关性白内障晶状体组织中呈高表达,miR-181能够促进人晶状体上皮细胞凋亡,从而可能在年龄相关性白内障的发病过程中发挥一定作用,miR-181可能成为白内障非手术治疗的一种新途径,但具体机制有待进一步研究。
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:目的探讨防盲活动中贫困白内障手术质量控制方法。方法年终检查时(距手术后最短时间为一个月,大部分都在术后三月以上)设计了一套质量评估方案,即随机、按一定的比例进行检查,包括按8%抽查病历,2%电话随访,0.5%现场入户检查。结果2009年我省贫困白内障手术任务13000例,实际完成13308例。手术方式主要为小切口非超声乳化白内障摘除及人工晶体植入术,其中8%的病人采取了超声乳化手术。病历抽查:93%的病历能按省卫生厅和省防盲办要求的规范执行,其中观察术后矫正视力〉0.3达91.23%,人工晶体植入率97.82%。电话随访结果是老百姓对该项工程满意率达92.30%。现场入户调查结果,对手术效果(100分)评分98.87,对政府组织(100分)等评分99.98,现场视功能检查(包括日常生活对视力的需求)评分(总分40分)37.43。术后并发症发生率﹤5%,主要表现为瞳孔变形和后发白内障。结论按一定比例,随机采取病历检查、电话随访和现场入户相结合的方法进行调查,是贫困白内障患者复明工程手术质量的良好控制方法。
简介:目的本文报道了12例同时性多灶性喉癌并通过分析其临床病理学特点,探讨多灶性喉癌的发生学来源.方法回顾性分析1991~2001年间我院行全喉切除术的12例同时性多灶性喉癌的TNM分期、肿瘤位置、大小、组织学类型、病理学分级以及病史等.结果同时性多灶性喉癌的发病率是1.4%(12/861).所有病理均为鳞状细胞癌.同一病例各病灶的组织学类型和病理学分级均相同.二病灶喉癌的发生率占总数的91.7%(11/12),仅一例为三病灶喉癌、67%(8/12)患者中二病灶分别位于双声带游离缘的对应处.3例(25%)有术前放疗史,1例术前曾行多次声带活检为不典型增生.所有病例术前均未诊断出多灶性.结论声门型同时性多灶性喉癌可能为单中心起源.腔内种植即声带振动时癌细胞从一侧声带游离缘种植到对侧接触损伤处,可能是喉癌多灶性的原因之一,放疗可能是多灶性喉癌的诱发因素.
简介:目的调查上海市奉贤区奉城镇60岁以上老年人群干眼的患病率及相关影响因素。方法2013年6~12月对上海市奉贤区奉城镇60岁以上人群采用随机整群分组抽样法,进行问卷调查,对有阳性症状的受检者做裸眼视力、裂隙灯、基础泪液分泌试验(SⅠt)、泪膜破裂时间(BUT)、角膜荧光素染色(FL)、睑板腺功能检查。结果随机抽取受检者2387例,实际受检者2058例,应答率为86.2%。受检者中干眼患者295例,患病率为14.3%,女性患病率为18.0%(208/1153),男性患病率为9.6%(87/905),女性高于男性(χ^2=29.22,P〈0.05);80岁以上人群的干眼患病率为21.3%,70~79岁为15.8%,60~69岁为9.2%(χ^2=36.61,P〈0.005)。结论上海市奉贤区奉城镇60岁以上人群中,女性的干眼患病率高于男性。干眼患病率随年龄增长而升高,眼干涩、视疲劳、异物感为最常见症状,局部及全身多种因素均影响干眼的发生。干眼的社区防治对郊区眼病防治工作有着重要的意义。
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。