简介:目的:探讨羟基磷灰石义眼台(HA),Ⅰ期植入花瓣状巩膜壳内的手术效果。方法:对有眼球内容物剜除术适应证的病例,实施眼球内容物剜除术,依据眼B超和钢球模检测所需羟基磷灰石义眼台型号,将羟基磷灰石义眼台Ⅰ期植入花瓣状巩膜壳内,其表面双层巩膜覆盖。随访6~15mo,观察术后效果。结果:患者48例48眼均成功植入羟基磷灰石义眼台,并获得较满意的外观美容效果。结论:羟基磷灰石义眼台Ⅰ期植入花瓣状巩膜壳内术式,保留了眼球六条附属肌肉及其功能,义眼台前方自体巩膜双层覆盖防止眼台暴露,改善眼内容物剜出术后眼窝塌陷等畸形,达到较为理想的一种眼部整形效果。
简介:目的探讨耳源性颅内并发症的临床特点及诊治措施。方法回顾分析2003-2010年我科收治的21例耳源性颅内并发症患者的临床资料,病例包括脑脓肿9例、脑膜炎5例、静脉窦血栓性静脉炎4例、硬膜外脓肿3例,继发于胆脂瘤型中耳炎14例、骨疡型中耳炎3例、隐蔽性中耳炎2例、Modini畸形2例。21例均行耳部及头颅cT平扫检查,其中6例未发现颅内病变,经行磁共振成像(MRI)检查后确诊。分别行单纯乳突根治术8例、乳突根治术+脑脓肿穿刺引流6例、乳突根治术+颅钻孔脑脓肿引流1例、乳突根治术+脑脓肿切除术1例、乳突根治术+静脉窦切开脓肿清除及血栓取出2例、外淋巴漏修补术2例。结果随访1-2年,1例死亡,其余20例治愈,其中19例干耳,1例术腔仍有少量分泌物。全部患者颅内并发症无复发。结论胆脂瘤型和骨疡型中耳炎仍是耳源性颅内并发症的最常见病因,应提倡对这两种危险性中耳炎早期进行手术治疗。临床高度怀疑颅内并发症,CT平扫阴性病例,需行MRI检查。乳突切除进路的显微微创手术有效,无需开颅。
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:糖尿病视网膜病变(diabeticretinopathy,DR)是糖尿病最严重和最常见的微血管并发症之一,也是一种世界范围内主要的致盲性眼病。其发病机制相当复杂,目前尚未完全明确。经典理论包括多元醇代谢异常、糖基化终产物的形成增加、蛋白激酶C的活化、氧化应激等。近年来,随着分子生物学的发展,分子基础研究已成为目前DR发病机制研究的焦点和热点。目前已知与DR有关的细胞因子有VEGF,IGF-1,bFGF,TNF等。多种细胞因子通过信号转导系统形成复杂的网络系统,引起新生血管生成,破坏血-视网膜屏障等多种改变,从而导致DR的发生发展。本文就细胞因子表达异常与DR的关系进行综述。
简介:目的:通过检测高度近视性弱视者弱视眼黄斑区视网膜神经节细胞厚度,探讨该类弱视的程度与视网膜神经节细胞厚度的关系。方法:选取先天性高度近视(10g/L阿托品眼膏散瞳后〉-4.00DS)并伴有弱视患者12例20眼。年龄3.5~15岁。采用傅立叶域光学相干断层扫描仪(fourier-domainopticalcoherencetomography,FD-OCT)测量弱视眼的黄斑区神经节细胞厚度以及黄斑区视网膜厚度,并比较神经节细胞层厚度占视网膜层厚度的比例与患者弱视及近视程度的相关性。结果:我们发现高度近视患者近视程度与最佳矫正视力无明显相关性,近视程度高的患者其神经节细胞层相对厚度有变薄现象。结论:先天性近视性弱视的患者黄斑中心区神经节细胞层厚度占视网膜厚度的比例有下降。
简介:目的探讨慢性鼻窦炎、鼻息肉合并支气管哮喘患者鼻窦炎、鼻息肉治疗对哮喘的影响。方法回顾分析28例慢性鼻窦炎、鼻息肉合并支气管哮喘患者的临床资料,接受鼻内镜手术治疗21例、保守治疗7例。结果21例经鼻内镜手术治疗后,慢性鼻窦炎、鼻息肉治愈11例、好转6例、无效3例、复发1例,治愈率为52.4%、有效率为80.9%;合并的哮喘症状好转15例、无效6例,有效率为71.4%;慢性鼻窦炎、鼻息肉及支气管哮喘均有效13例,有效率为61.9%。保守治疗的7例中,鼻窦炎好转1例、无效3例,有效率为14.3%;哮喘好转2例、无效5例,有效率为28.6%。结论慢性鼻窦炎、鼻息肉合并支气管哮喘经鼻内镜手术治疗鼻窦炎、鼻息肉后,能有效控制哮喘症状的发生。
简介:目的:探讨眼附属器B细胞非霍杰金淋巴瘤(B—cellnon-Hodgkinlymphoma,NHL)中Skp2,p27和PTEN的表达。方法:收集1995年到2011年青岛大学附属医院眼科石蜡包埋标本,用免疫组化法分别检测眼附属器B细胞NHL(n=30)标本中Skp2,p27和PTEN的表达,以眼部反应性淋巴组织增生(n=10)作为对照组。以患者的年龄、性别、发病部位,病理类型作为眼附属器B细胞NHL的的分类标准。结果:Skp2,p27和PTEN的表达与患者的年龄、性别、发病部位无关,而与病例类型有关。眼附属器B细胞NHLSkp2表达率与眼部反应性淋巴组织增生相比显著增高。p27,PTEN表达率与反应性淋巴组织增生相比显著降低。随眼附属器B细胞NHL病理分级的提高,Skp2的表达显著增高,p27和PTEN的表达显著降低。在黏膜相关淋巴组织结(mucosa—associatedlymphoidtissue,MALT)外边缘区B细胞淋巴瘤(diffuselargeB—celllymphoma,DLBCL)中,Skp2分别与p27,VFEN成负相关,p27和PTEN成正相关。结论:Skp2的表达升高,p27,PTEN蛋白的缺失以及可能与眼附属器B细胞NHL的发生有关;其中在MALT外边缘区DLBCL中,三种蛋白存在相关性。联合三种蛋白的检测眼附属器B细胞NHL的不同病理类型有重要意义。
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: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.