简介:Objective:Establishnormativedatafortympanicelectrocochleography(TMECochG)parametersinnormalhearingadultswithoutMeniere'sdisease's(MD)symptoms.DescribeTMECochGvariablesthathelptodistinguishnormalfromMDears.Materialandmethods:Weenrolled100subjects(N?200ears),59females,agedbetween19and71yearsfrom09/2010to04/2014.Inclusioncriteria:normalotomicroscopy,hearingthresholds25dBnHLfrom250to4000Hz,normaltympanogram,nosymptomsofMDaccordingtotheAAO-HNS1995criteriaandGibson'sscore<7.Weexcludedsubjectswithdizziness,auralfullnessorothersymptomsofendolymphatichydrops.Thefollowingparameterswereanalyzed:SP/APamplituderatio,SP/AParearatioandthedifferencebetweenAPlatencywithrarefactionandcondensationstimuli.Results:Therewasnosignificantdifferencebetweenrightandleftears(Intraclasscorrelationcoefficient<0.6).SP/APamplituderatiovariedbetween0.084and0.356andSP/AParearatiobetween0.837and1.671(percentiles5and95).TheAPlatencydifferencetorarefactionandcondensationclickswasbetween0.0and0.333ms.Conclusion:NormativedataforTMECochGparameterswereestablishedin100normalhearingsubjectswithoutMD.Thesedatacanbeusedtodistinguishnormalfrompathologicalfindingsandinfollow-upofMDpatients.
简介:ObjectivesTostudyclinical,imagingfeaturesandtreatmentoutcomesofcongenitalcholesteatomaofmiddleear(CCME).MethodsThisisaretrospectivereviewof10CCMEcasesselectedfrom952cholesteatomacasestreatedbetweenJanuary1995andDecember2005attheDepartmentofOtolaryngology-HeadandNeckSurgery,ChinesePLAGeneralHospital.Themainoutcomemeasureswerethesiteoforigin,clinicalfeatures,surgicalfindings,imagingcharacteristicsandhearingresults.ResultsThemeanageofthe10patientswas16years(rangedfrom10to24years),with6beingolderthan18years.Therewere7malesand3females.Theaveragedelaytodiagnosiswaslongerthan2years.ThemeanpreoperativePTAwas55dBHL,withameanABGof45dB.Typicalcholesteatomaswereseenbehindthetympanicmembraneinthesuperoposteriorquadrantonotoscopyonlyin2patients.HighresolutionCTwascompletedinallpatients.Mostofthepatients(8/10)werediagnosedwithotosclerosisorossicularabnormalitybeforeoperation.Allpatientsunderwentaone-stagetympanoplastyfollowingtransmeatalexplorativetympanotomyandcompletecholesteatomaremoval,exceptone,whounderwentaCWUmastoidectomyduetoextensivecholesteatomainvolvement.Thecholeasteatomalesionwasconfinedtothesuperoposteriormesotympanuminallpatients.ThemeanpostoperativePTAwas20dBHL.Allpatientswerefollowed-upforatleast1.5yearspostoperatively.Revisionprocedureswereperformedin2patientsforhearingdeterioration.Noresidualorrecurrenceofcholesteatomawasfound.ConclusionCCMEisararediseasethatoftengetsdelayeddiagnosis.Residuallesionsandtheprognosismainlydependontheextentofthelesion.
简介:目的通过分析研究一例Waardenburg综合征Ⅳ型(WS4)散发病例患儿的分子遗传学病因,丰富该致病基因突变谱,为WS4遗传咨询提供新的证据,并对该综合征相关的SOX10基因所有无义突变进行文献回顾和总结。方法收集一个WS4患儿的详细临床资料,签署知情同意书后获取血样,对包括SOX10、EDNRB、EDN3在内的172个先天性巨结肠及综合征相关基因进行二代测序,并用聚合酶链反应针对可疑致病突变进行扩增及Sanger测序验证,应用GeneTool软件及生物信息学网站的信息分析数据。结果发现患儿SOX10基因第4外显子存在一杂合无义突变(c.838G〉T,p.E280X),父母均表现正常且未发现有该突变。结论发现一新的SOX10基因致病突变,丰富了致WS4的SOX10基因突变谱,并为父母提供再生育患儿的风险评估及必要的产前诊断咨询。
简介:目的调查江苏省人群中眩晕的分布情况及相关因素,为制订防治策略提供科学依据。方法采用按容量比例概率抽样(PPS)方法,在江苏省常住人口中抽样,对其中≥10岁的6854人进行眩晕问卷调查、纯音测听和耳科检查。结果本研究实际接受调查6333人,应答率92.4%,男3035人(47.9%),女3298人(52.1%),年龄10~93岁。被调查人群中眩晕的总体患病率为4.1%(标化患病率:全国3.4%,江苏3.6%),眩晕患病率随年龄增加呈上升趋势(P=0.000)。女性眩晕患病率(5.3%)高于男性(2.8%)(P=0.000),城乡之间差异无显著性(农村4.3%。城镇3.8%.P=0.459)。听力减退、中耳炎病史、噪声暴露史是眩晕的危险因素,OR值分别为2.186、2.135、1.609。结论眩晕在江苏省人群中较为常见,其发生与多种因素有关,必须加强这些方面的防治研究。
简介:摘要不饱和脂肪酸10-羟基-2-癸烯酸又名蜂王酸(10-HDA),是蜂王浆的主要成分,由于其具有抗肿瘤、抗菌活性和刺激胶原蛋白产生的作用,吸引了世界各地对10-HDA药理特性的研究。然而,10-HDA对紫外线(UVB)诱导的皮肤光老化影响却罕有报道。本研究通过测量I型前胶原蛋白(PIP),转化生长因子β1(TGF-β1)和基质金属蛋白酶-1(MMP-1)的变化,检测10-HDA对UVB诱导人正常皮肤成纤维细胞光老化的影响。结果10-HAD使I型前胶原蛋白和TGF-β1含量增加,但是金属蛋白酶-1的水平并没有改变。因此,10-HDA可能是通过增强胶原蛋白的合成而对UVB诱导的皮肤光老化进行保护。