简介:Managingmicrotiapatientsisalwaysachallenge.Multidisciplinaryapproach,goodfamilysupport,wellestablisheddoctorepatientrelationshipandwellorganisedpatient-supportgroupsaretheessentialelementsforsuccess.Withtheadvancementofimplantablehearingdevices,moreoptionswillbeavailableforthemicrotiapatients.Otologistsplayaleadingroleinthewholemanagementprocess.Theynotonlyprovideproperguidancetothepatientsinchoosingthecorrectpathofthetreatment,butalsoplayakeyroleinorganisingandmaintainingacosteffectivemultidisciplinaryrehabilitationteamforthemicrotiapatients.
简介:Applicationofsurgicalendoscope,usedaloneorincombinationwiththesurgicalmicroscope,fortheoperativemanagementofearandtemporalboneconditionsmayallowimprovedaccessandclearanceofdisease.Preservationofnormalstructuresmayalsobeimproved.Astheuseofthistoolisincreasing,theneedforbetterunderstandingoftheanatomyoftheearisbecomingevident.Thisisparticularlysoforendoscopicsurgeryaimingatremovaloflesionsinvolvingtheinfra-cochlearcorridorand/orpetrousapex.Humantemporalbone-derivedlabyrinthcasts(molds),originallymadeforendolymphaticductandsacanalysiswhichgenuinelyrepresentthemembranouslabyrinthanditsadjacentsofttissues,weremorphometricallyanalyzedintermsoftheanatomicrelationsbetweenstructuresinandaroundtheinfra-cochlearcorridor.Thedistancebetweenthepetrouscarotidartery(PCA)andthebasalturnofthecochlea,thedistancebetweenPCAandinfra-cochlearvein(ICV)/cochlearaqueduct(CA),andthedistancebetweenthelowersurfaceofbasalcochlearturnandthepointwherethecarotidarteryandjugularvein(JV)meetclosetothejugularforamen,weremeasuredtobearound1.3mm,6mmand8mmrespectively,thusconstitutinganapproximate68mm2infra-cochlearcorridor.Thisanalysisandfurtherstudywithlargersamplesmightbehelpfulforoperationviathiscorridorledtothepetrousapexwherecholesterolgranuloma,cholesteatomaandotherlesionsarenotuncommon.
简介:目的构建人野生型Cx30与红色荧光蛋白DsRed的融合蛋白表达载体,为揭示Cx30突变患者发病机制提供实验依据。方法用PCR法扩增GJB6基因,将PCR产物与T载体连接,用双切酶酶切pEASY-GJB6与载体DsRed-N1,连接回收后的片断,构建野生型Cx30编码序列与PDsRed2表达载体,测序鉴定序列正确性。将GJB6-DsRed用脂质体转染HEK293细胞,荧光显微镜观察表达的融合蛋白。结果GJB6-DsRed在HEK293细胞中高效表达,表达主要位于细胞膜中。结论成功构建了人野生型Cx30与红色荧光蛋白DsRed的融合蛋白表达载体,为进一步研究非综合征性聋的致聋机制奠定了基础。
简介:目的考察3-6岁听障儿童语言功能发展的特点。方法利用《听障儿童语言功能评估》对202例3-6岁听障儿童进行跟踪评估,分别在基线期、6个月后、12个月后进行测试;对3次评估结果进行比较,分析不同年龄组之间的差异,并将听障儿童评估分数与健听儿童参考值对比。结果听障儿童的各项语言功能随时间推移极显著提高(P=0.000〈0.01);听障儿童年龄越大,语言功能越强,年龄组之间存在显著差异(P〈0.05);所有年龄段听障儿童基线评估得分均低于3岁健听儿童期望值,康复12个月后,3、4岁听障儿童达到同龄健听儿童期望值,5、6岁听障儿童和同龄健听儿童仍有差距。结论听障儿童的语言功能和健听儿童存在差距,但经过康复可有较大提升,且干预年龄越小,提升速度越快。
简介:Objective:TodemonstratetheperformancebenefitoftheAutomaticSceneClassifier(SCAN)algorithmavailableintheNucleus6(CP900series)soundprocessoroverthedefaultprocessingalgorithmsofthepreviousgenerationNucleus5(CP810)andFreedomHybridTMsoundprocessors.Methods:Eighty-twocochlearimplantrecipients(40Nucleus5processorusersand42FreedomHybridprocessorusers)listenedtoandrepeatedAzBiosentencesinnoisewiththeircurrentprocessorandwiththeNucleus6processor.Results:TheSCANalgorithmwhenenabledyieldedstatisticallysignificantnon-inferiorandsuperiorperformancewhencomparedtotheNucleus5andFreedomHybridsoundprocessorsprogrammedwithASCtADRO.Conclusion:TheresultsofthesestudiesdemonstratethesuperiorperformanceandclinicalutilityoftheSCANalgorithmintheNucleus6processorovertheNucleus5andFreedomHybridprocessors.
简介:王某,女,1994年8月30日出生,自幼听力言语障碍,出生后6个月发现听力下降,对用力呼叫无反应,否认各种疾病史.剖腹产出生、个人史、家族史、母亲妊娠史均无异常.1岁2个月会走路,体格发育正常.耳科检查外耳、外耳道、鼓膜均正常.听力检查:1996年12月11日北京儿童医院检查ABR100dB(nHL)双耳无反应;1996年12月13日中国聋儿康复研究中心做ABR125dB(SPL)无反应,40HzAERP125dB有反应;行为测听检查250Hz70dB500Hz80dB1KHz85dB2KHz90dB4KHz95dB有反应,鼓声检查(+),DPOAE检查双耳正常.门诊医生进一步检查言语,对语言的理解优于表达,可听懂一些指令,初步考虑高频听力损失严重及单纯性言语发育迟缓.
简介:目的构建含有人E2F2基因和绿色荧光蛋白基因(pEGFP)的腺病毒载体,为聋病的基因治疗奠定实验基础。方法根据已知的E2F2基因序列设计并合成相应的双链DNA,将其与酶切线性化的pDC315-EGFP载体片段连接,构建穿梭质粒pDC315-GFP-E2F2,并将其与腺病毒骨架质粒pBHGlox△E1,3Cre共转染HEK293细胞,同源重组产生重组腺病毒。对重组腺病毒进行扩增、纯化及滴度测定,用聚合酶链反应和测序方法验证穿梭质粒pDC315-GFP-E2F2穿梭质粒的构建;通过荧光显微镜和Westernblot(蛋白质印迹)方法,分别检测质粒pDC315-GFP-E2F2和重组腺病毒表达E2F2蛋白情况。结果经聚合酶链反应鉴定和测序分析,证实穿梭质粒pDC315-GFP-E2F2与设计一致;经荧光显微镜检测,分别由穿梭质粒pDC315-GFP-E2F2、重组腺病毒转染的HEK293细胞均可观察到GFP表达;经WesternBlot检测出在72kDa~95kDa处有条特征带,其大小和E2F2-GFP融合蛋白(~76kDa)相吻合;滴度测定为1×1011PFU/ml(PFU,plaqueformingunit,空斑形成单位)。结论成功构建了人E2F2基因重组腺病毒载体,并能在HEK293细胞中表达。
简介:ObjectiveToinvestigatetheearlychangeofcochlearribbonsynapsesoninnerhaircellsinresponsetoaminoglycosideototoxicity.MethodsC57BL/6Jmicereceivedintraperitonealinjectionofgentamicin(100mg/kg/day),andtheapicalcoilorganofCortiwasexaminedonthe4th,7thand10thday(n=10).Litter-mateswithoutgentamicintreatmentservedascontrols(n=10).RIBEYEonthepresynapticmembraneandAMPAreceptorsonthepostsynapticmembranewerelabeledwithCtBP2orGluR2/3respectively.Threedi-mensionreconstructionwasconductedusingthe3DSMAX8.0software.ResultsTherewerenodisruptionsofouterorinnerhaircellsinallgroups.However,thenumberofribbonsynapsesoncochlearinnerhaircellsincreasedsignificantlywithin7daysaftergentamicinexposure(P<0.01),followedbyasignificantde-creaseafter7days.ConclusionDuringtheearlystageofaminoglycosideototoxicity,increasedpopulationofcochlearribbonsynapsesmayindicateasignificantdown-regulationofsynapticfunction.
简介:ObjectiveTostudycharacteristicsofhearinglossafterexposuretomoderatenoiseexposureinC57BL/6Jmice.MethodsMaleC57BL/6Jmicewithnormalhearingatageof5-6weekswerechosenforthisstudy.Themicewererandomlyselectedtobestudiedimmediatelyafterexposure(GroupP0),or1day(GroupP1),3days(GroupP3),7days(GroupP7)or14days(P14)afterexposure.Theirbeforeexposureconditionservedasthenormalcontrol.Allmicewereexposedtoabroad-bandwhitenoiseat100dBSPLfor2hours,ABRthresholdswereusedtoestimatehearingstatusateachtimepoint.ResultsABRthresholdelevationwasseenateverytestedfrequencyatP0(P<0.01).Elevationathigh-frequencies(16kHzand32kHz)wasgreaterthanatlowerfrequencies(4kHzand8kHz,P<0.05).FromP1toP14,ABRthresholdscontinuouslyimproved,andtherewasnosignificantdifferencebetweenP14andbeforeexposure(P>0.05).ConclusionThereisafrequencyspecificresponseto100dBSPLbroad-bandwhitenoiseinC57BL/6Jmice,withthehigh-frequencybeingmoresusceptible.HearinglossinducedbymoderatenoiseexposureappearsreversibleinC57BL/6Jmice.
简介:目的总结人工耳蜗植入前中耳炎性病变,以及植入后中耳、内耳感染的治疗经验.方法术前2例分泌性中耳炎伴乳突粘膜病变和1例慢性中耳炎选择一期手术;1例中耳乳突炎,1例胆脂瘤行分期手术.5例患者耳后切口经面神经隐窝入路植入电极,1例乳突根治术后术中借卵圆窗和鼓岬定位耳蜗钻孔部位植入电极,术中均进行电极阻抗测试和听神经遥测反应测试.结果1例术后中耳炎伴迷路炎经保守治疗痊愈.所有患者植入耳蜗工作正常,随访10-40月未见与中耳炎相关的并发症.结论极重度感音神经性聋伴分泌性中耳炎患者,原则上应分期手术;合并中耳乳突炎者,也应分期手术,完壁式和经典式乳突根治,根据病情均可选用.但中耳炎静止期鼓膜小穿孔者,可考虑一期手术.
简介:目的探讨老年性耳蜗毛细胞损害与中药复方健耳剂两种喂药方法干预的作用。方法选择1月龄C57BL/6J小鼠22只用于本实验,其中4只小鼠每日饮用自来水直到出生后3个月作为幼龄对照组;6只小鼠每日饮用自来水直到出生后7个月作为老年性聋对照组;6只小鼠每日自动饮用中药复方健耳剂直到出生后7个月;另6只小鼠每日自动饮用同样中药至4个月后改用每日人工灌服直到出生后7个月。各组动物实验到期终止后,取耳蜗进行全耳蜗基底膜铺片,将全耳蜗内、外毛细胞计数结果输入计算机并应用耳蜗图软件进行耳蜗毛细胞密度对比分析,其中选择基底膜上重要的病变区间的毛细胞密度进行统计学分析。结果3月龄对照组小鼠耳蜗外、内毛细胞缺损仅仅出现在耳蜗底回钩端区域;7月龄对照组外、内毛细胞缺损从底回基底膜起始端扩展到距离耳蜗顶端约40%区域;7月龄中药灌服组和自动饮用组动物的内、外毛细胞缺损范围和程度相似,均显著比7月龄对照组为轻(P〈0.001)。结论中药复方健耳剂能够有效延缓C57BL/6J小鼠老年性耳蜗毛细胞损害的发生和发展,两种喂药方式所起作用相同(P〉0.05),其药理机制可能与其改善微循环,清除活性氧,保护线粒体等作用相关。
简介:目的探讨不同周龄C57BL/6小鼠内耳形态学及其ABR阈值变化。方法取C57BL/6小鼠3周、4周、12周、26周各10只,听性脑干反应(ABR)测试双侧2、4、8、16、20kHzABR阈值。采用基底膜铺片MyosinⅥ、Neurofilament免疫组化染色,观察耳蜗毛细胞和神经丝的变化。扫描电镜观察耳蜗毛细胞及其静纤毛随年龄的变化。结果随着年龄增长,C57BL/6小鼠各频率ABR阈值明显提高,顶转和底转内毛细胞缺失逐渐增多,神经丝染色渐淡,毛细胞静纤毛逐渐发生数量减少、增粗融合、倒伏等变化。到26周龄时已达到重度聋,各频率较3周组有显著统计学差异。顶转和底转内毛细胞有连续缺失,外毛细胞完全缺失,内毛细胞只有残存的少量静纤毛,粗细不均,倒伏明显。结论本研究对国产C57BL/6小鼠的内耳形态进行观察,明确了其ABR阈值和内耳毛细胞的变化规律,为用国产C57BL/6小鼠进行老年性聋研究提供了依据。