简介:
简介:目的探讨小儿喉乳头状瘤(JLP)患儿外周血T淋巴细胞(简称T细胞)亚群的变化及脾氨肽对JLP患儿T细胞亚群的影响和疗效。方法60例JLP病例随机分为JLP联合治疗组(30例)和JLP手术组(30例),所有JLP患者均采用喉内镜下电动吸割器切除新生物,联合治疗组术后同时口服脾氨肽辅助治疗,手术组不加任何免疫治疗。以同期体检的20例健康儿童做对照组,对JLP病例组(未治疗前)、健康对照组、JLP联合治疗组和JLP手术组进行外周血T细胞亚群的检测,并对脾氨肽辅助治疗JLP的疗效进行分析。结果治疗前JLP病例组CD3+T细胞、CD4+T细胞百分率及CD4+/CD8+T细胞比值较健康对照组降低,差异有统计学意义(P〈0.05);治疗后JLP联合治疗组CD3+T细胞、CD4+T细胞百分率明显升高(P〈0.05),CD4+/CD8+T细胞比值恢复平衡;治疗后JLP联合治疗组较JLP手术组的疗效明显提高(P〈0.05)。结论JLP患儿存在T细胞介导的免疫功能障碍,脾氨肽可恢复JLP患儿T细胞亚群的正常比例,改善患儿的细胞免疫功能,对JLP有较好的辅助治疗作用。
简介:目的:构建表达小鼠CD4+T细胞钙支架蛋白AHNAK1的短发夹RNA(shorthairpinRNA,shRNA)慢病毒载体,并研究其对小鼠甲状腺相关性眼病(thyroid-associatedophthalmopathy,TAO)的抑制效应。方法:设计并筛选对AHNAK1具有良好干扰效力的shRNA序列,慢病毒载体包装干扰序列,感染小鼠CD4+T细胞,检测AHNAK1静默对T细胞功能的抑制作用,采用实验动物模型观察AHNAK1体内抑制甲状腺相关性眼病的效果。结果:成功筛选出具有良好干扰效力的shRNA,并包装入慢病毒。病毒滴度为1.0伊106TU/mL,转染慢病毒的CD4+T细胞展现出失能倾向,抑制炎症免疫反应;在动物模型中抑制T细胞中AHNAK1表达可以有效控制甲状腺眼病的发生发展,显著降低治疗组T细胞中IL-2、IL-1茁和IFN-酌的表达。结论:成功构建了表达小鼠AHNAK1shRNA的慢病毒,具有抑制T细胞分泌IL-2、IL-1茁和IFN-酌的表达效应,能够有效抑制甲状腺眼病的发生发展。
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:AIM:Todefinetheultrasonographicstructureofnormallowereyelidanatomiccompartmentsandtheirspacialrelationshipindynamicmotion.METHODS:Highresolutionultrasound(15MHz)wasperformedonthelowereyelidsof7normalsubjects.Movementsofthelowereyelidanditscompartmentswerevisualizedwithultrasound.Inaddition,themaximalexcursionareaofthelowereyelidfatcompartmentsandretractormotionswasmeasuredbeforeandaftermotion.RESULTS:Theorbicularismusclecouldbeseenasanecholucentstructurebetweenthedermisandtheechodencefatpads.Lowereyelidfatpadseemstobedividedinto2compartmentsasrangeofmotionanddirectionofmovementofeachofthemvaries.Itseemsthatthesecompartmentshavealsodifferentbehavior.Themeasuredprofileareaofthevisiblenormallowereyelidfatpadsduringmovementofglobefromup-gazetodown-gazedecreasedby50%.Orderofmovementoflowereyelidstructuresseemstobeasfollows:afterglobemovementfistweseeretractormovement,anteriororbitalfatpad,thenskinandseptum,andfinallymovementofinferiorfatpad.CONCLUSION:Ultrasoundrepresentsanoninvasivetoolforthevisualizationoflowereyelidmorphology.Expandingitsapplicationcouldhelpusunderstandthecompartmentalchangesinphysiologicaleyelidmovement,inaginganddiseasedstudypopulations,aswellasassessoperativeoutcomes.
简介:AIM:Toinvestigatethetreatmentstatusandprognosisofspace-occupyinglacrimalglandlesionsatonetertiaryeyecenterinChina.·METHODS:Aretrospectiveclinicalstudywasperformedon95patientswithspace-occupyinglesionsofthelacrimalglandsurgicallytreatedattheEye&ENTHospitalofFudanUniversityfrom2003to2007.Thereviewedclinicaldataincludedage,gender,sideofthelesion,durationofsignsandsymptoms,histopathologicaldiagnosis,treatmentmodality,recurrence(local,regional,anddistantmetastasis)andsurvival.·RESULTS:Ofthe95cases(99eyes),pleomorphicadenomaswerethemostcommonlesions(43cases),followedbylymphoiddisorders(14),inflammatorypseudotumors(11),carcinomaex-pleomorphicadenomas(11),andadenoidcysticcarcinomas(ACC,6).Therewere8patientswithrelapsedpleomorphicadenomas.Fiveofthese8caseshadmalignantpathologicalchanges.AllpatientswithACChadmetastasisandthreeofthemdiedduringtheirfollow-up.·CONCLUSION:Ourstudyindicatedthatthemostcommonlacrimalglandlesionswerepleomorphicadenomas.Multiplerecurrenceandsurgicalproceduresmayincreasetheriskoftumorprogression.ACChadahighincidenceoftumormetastasisandapoorprognosis.