简介：AIM:Toinvestigateandcomparethecytopathologicalandclinicaleffectsofamnioticmembranetransplantation(AMT)andoralmucosalmembranetransplantation(OMMT)insocketcontraction.METHODS:Twelvepatientswhocouldnotbefittedwithocularprosthesisduetosocketcontracturewereincludedinthisstudy.SevenpatientsunderwentAMTand5patientsunderwentOMMT.Thirteenpatientswhohadhealthysocketswereincludedascontrolgroup.Depthofinferiorfornix,degreeofinflammation,extentofthesocketcontractureandsocketvolumeweremeasuredinthepreoperativeperiodandatsixthandtwelfthweekspostoperatively.Impressioncytologyofconjunctivalfornicesandteartransforminggrowthfactorbeta-1(TGFβ1)levelsweredetermined.RESULTS:IntheAMTgroup,socketvolumeandlowerfornixdepthvaluesweresignificantlyhigher(P=0.030andP=0.004respectively)andinflammationlevelsandimpressioncytologystages(P=0.037andP=0.022respectively)weresignificantlylowerinpostoperativeperiodcomparedtopreoperativeperiod.IntheOMMTgroup,nostatisticaldifferenceswerefoundintermsofclinicalparameters,inflammationlevelsandimpressioncytologystagesofpreoperativeversuspostoperativevalues.PreoperativetearTGFβ1levelswerehigherinAMTandOMMTgroupscomparedtothecontrolgroup(25.5ng/mL,26.3ng/mLand21.7ng/mLrespectively).DecreasedtearTGFβ1levelswereobservedinboththeAMTandOMMTgroupspostoperatively(mediandecreasevalue=2.1ng/mLand2.7ng/mLrespectively).CONCLUSION:AMTisassociatedwithpostoperativeimprovementininferiorfornixdepth,socketvolume,inflammationandimpressioncytologylevelsandmaybeamoreproperalternativemethodthanOMMTinthemanagementofsocketcontracture.

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简介：Traumaticinjuriestothecentralnervoussystem(CNS),includingtraumaticbraininjury(TBI)andspinalcordinjury(SCI),ofteninvolveanimmediatemechanicaldamagetoplasmamembranethatsurroundsneuronalsomataandaxons.Thisinitialdisruptionofplasmamembranefollowinginjurieshasbeenconvincinglydemonstratedbyincreasedmembrane

简介：对学习客观解剖并且cadaveric前臂的interosseous膜(马恩岛)的biomechanical特征。十radius-IOM-ulna结构从新鲜结冰死尸被收获测量马恩岛的腱的部分的长度，宽度和厚度的方法。然后，腱的部分与腱在测量以后属于的尺骨、光线的结束一起被孤立。半径的近似部分和尺骨的远侧的部分在牙齿的基础丙烯酸的树脂粉末被嵌入并且修理。嵌入的标本被MTS为全部张力的测试用10000N负担房间夹钳并且修理858测试机器。马恩岛以50mm/min的速度被拉长直到它被破裂。负担排水量曲线与一台计算机和最大的负担被描绘，僵硬同时被记录。结果前臂的马恩岛由三部分组成：中央腱的织物，膜的织物和背面的隶属于的倾斜的绳索。马恩岛在一个中立位置被拉长，并且在内转和旋后位置弯曲。当最大的负担的点到达了N到1021.50时，马恩岛的腱的部分在6个标本被撕碎吗？

简介：Rabbitlimbalcornealepithelialcells,cornealendothelialcellsandkeratocyteswereculturedonamnioticmembrane.Phasecontrastmicroscopeexaminationwasperformeddaily.Histologicalandscanelectronmicroscopicexaminationswerecarriedouttoobservethegrowth,arrangementandadhesionofcultivatedcells.Resultsshowedthatthreecornealcelltypesseededonamnioticmembranegrewwellandhadnormalcellmorphology.Culturedcellsattachedfirmlyonthesurfaceofamnioticmembrane.Cornealepithelialcellsshowedsingularlayerorstratification.Cellboundarieswereformedandtightlyopposed.Cornealendothelialcellsshowedcobblestoneorpolygonalmorphologiccharacteristicsthatappeareduniforminsize.Thecellulararrangementwascompact.Keratocyteselongatedandshowedtriangleordendriticmorphologywithmanyintercellularjointswhichcouldformnetworks.Inconclusion,amnioticmembranehasgoodscaffoldproperty,diffusioneffectandcompatibilitywithcornealcells.Thebasementmembranesideofamnioticmembranefacilitatedthegrowthofcornealepithelialcellsandendothelialcellsandcelljunctionsweretightlydeveloped.Thespongylayerofamnioticmembranefacilitatedthegrowthofkeratocytesandintercellularjointswererich.Amnioticmembraneisanidealbiomaterialforlayeringtissueengineeredcornea.

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简介：ＤＥＶＥＬＯＰＭＥＮＴＯＦＡＶＥＲＳＡＴＩＬＥＳＥＮＳＩＮＧＭＥＭＢＲＡＮＥＦＯＲＩＭＭＵＢＩＬＩＺＡＴＩＯＮＯＦＰＲＯＴＥＩＮＡＮＤＡＮＥＷＩＭＭＯＢＩＬＩＺＡＴＩＯＮＭＥＴＨＯＤＹ．Ｋ．Ｚｈｏｕ，Ｊ．Ｗ．Ｙｕａｎ，Ｓ．Ｑ．Ｘｕ，Ｂ．Ｈ．Ｓｈｕ（Ｄ...

简介：Objective:Toconstructarecombinantplasmidcontainingtheoutermembraneprotein2(Omp2)geneofChlamydiatrachomatisandexpressOmp2inE.coli.Methods:Theomp2geneofC.trachomatisserovarDwasclonedintopQE30vectorfollowingPCRamplificationfromgenomicDNA.E.coliM15transformantswereinducedtoexpressthefusionproteinbyIPTGandtheproductwasidentifiedbySDS-PAGEandWesternblot.Results:ConfirmedbyenzymecleavageanalysisandDNAsequencing,acorrectrecombinantplasmidpQE30/omp2wasconstructed.Thefusionproteinfromthetransformantswasapproximately60kDainsizeinSDS-PAGEanalysis,whichcouldspeciallyreactwithanti-6×HismousemonoclonalIgGantibodies.Conclusion:WesuccessfullyexpressedOmp2inE.coilM15,providinganefficientandsimplesystemforassayingtheimmunologicalpropertiesofOmp2.

简介：Objectives:Recentstudieshaveintroducedmiddleearvolume(MEV)asanoveldeterminantofperforation-inducedconductivehearingloss(CHL)inamechanismdrivenbytrans-tympanicmembranepressuredifferences.Theprimaryaimsofthispreliminaryreportareto:1)correlateCHLwithperforationsize;2)describetherelationshipbetweenCHLandMEV;and3)compareCHLacrossarangeofcholesteatomainvolvement.Design:Aretrospectivepilotstudywasperformedin31subjectswithaudiometryindicativeofconductivehearingloss,temporalboneCTscans,andnopriormiddleearsurgery.PerforationsizeandMEVwereanalyzedwithrespecttoCHLinacohortof10perforatedearswithnocholesteatoma.CHLswerecomparedin3groupsdefinedbyextentofcholesteatomainvolvement.Results:EarswithlargeandsmallperforationsshowedmeanABGvaluesof32.0±15.7dBand16.0±16.4dB,respectively.AdirectrelationshipwasobservedbetweenMEVandCHLforearswithlargeperforationsacrossallfrequencies,whereasthisrelationshipforsmallperforationswasfrequency-dependent.Finally,astatisticallysignificantincreaseinCHLwasfoundacrossearswithincreasingcholesteatomainvolvementat1000Hz(c2(2)9.786,p0.008),2000Hz(c2(2)8.455,p0.015),and4000Hz(c2(2)8.253,p0.016).Conclusions:Thesepilotdatasuggestthatgreaterperforation-inducedconductivehearinglossesmaybeassociatedwithlargerperforationsizesandcholesteatoma.ThecorrelationbetweenMEVandCHLmayrequireadditionalstudy.

简介：Toobservetheprocessofinvasion,retinaofratwasusedasamodeltosubstitutetheinnerlimitingmembraneofretinaforthebasementmembrane.RetinainvadedbyesophagealcarcinomacellsandB16melanomacellsupontheinnerlimitingmembranewasstudiedbyscanningandtransmissionelectronmicroscopy.Theresultsshowedthattheinnerlimitingmembranewasdestroyedbybothkindsoftumorcells.Theprocessofdestructionwasfollowedbyaseriesoftransformationsintheinnerlimitingmembrane,i.e.folding,swelling,thickening,andgranularchange.Theinnerlimitingmembranewasdissolvedfocallyasaresultoftransformation,andthentumorcellsinvadedtheretinathroughthesedissolvedregions.Itseemsthat,asabarrier,theinnerlimitingmembraneplaysasimilarroleasthebasementmembrane.

简介：Tocloneandconstructtherecombinantplasmidcontainingthemajoroutermembraneprotein(MOMP)geneofChlamydiatrachomatis(C.trachomatis)andtoexpressthefusionproteininE.coliBL21,theMOMPgenewasamphfiedbypolymerasechainreaction(PCR)fromgenomeofC.trachomatisserovarD.ThefragmentwasclonedintotheprokaryoticexpressionvectorpET-22b(+)afterdigestionwithBamHⅠandNotⅠandtransformedintoE.coliXL1-Blue.RecombinantswereselectedbyenzymedigestionandsequencingandtherecombinantplasmidwithMOMPgenewasthentransformedintoE.coliBL21withIPTGtoexpressthetargetgene.TheexpressionrecombinantproteinswerepurifiedbyNi-NTAaffinitychromatography,andidentifiedbySDS-PAGEandWesternblot.Itwasfoundthata1.2kbMOMPgenewasisolated.TheDNAsequenceofMOMPwasfoundtobejustthesameasthesequencepublishedbyGenBank.ArecombinantplasmidcontainingMOMPgenewasconstructedtoexpressthefusionproteinsinE.coli.SDS-PAGEanalysisshowedthattherelativemolecularweightoftherecombinantproteinwasabout47kDathatwasconsistentwiththetheoreticalpredictedvalue,andthespecificityoftheexpressedproteinwasconformedbyWesternblot.ItconcludedthattheMOMPgenecouldbeexpressedintheprokaryoticsystem,bywhichitprovidedthefoundationforthefuturestudiesonthebiologicalactivitiesofC.trachomatisandforthedevelopmentofvaccineagainstthispathogen.

简介：Objective:Thepresentstudyaimedtoevaluatethepossibilityofusingcoherentanti-StokesRamanspectroscopy（CARS）microscopytodeterminethespecificmolecularmorphologyofcholesteatomabydetectingthenaturalvibrationalcontrastofthechemicalbondswithoutanystaining.Materialsandmethods:SpecimensfromthemastoidandtympanicmembranewithandwithoutcholesteatomawereanalyzedusingCARSmicroscopy,two-photonexcitedfluorescence（TPEF）microscopy,andthesecondharmonicgeneration（SHG）microscopy.Results:Incholesteatomatissuesfromthemastoid,astrongresonantsignalat2845cm-1wasobservedbyCARS,whichindicatedthedetectionoftheCH2hydro-carbonlipidbondsthatdonotgeneratevisiblesignalsat2940cm-1suggestiveofCH3bondsinaminoacids.Astrongresonantsignalat2940cm-1appearedinanareaofthesamespecimen,whichalsogeneratedabundantsignalsbyTPEFandSHGmicroscopyat817nm,whichwassuggestiveofcollagen.Inthetympanicmembranespecimenwithcholesteatoma,astrongresonantsignalwithcorrugatedmorphologywasdetected,whichindicatedthepresenceoflipids.AstrongsignalwasdetectedinthetympanicmembranewithchronicotitismediausingTPEF/SHGat817nm,whichindicatedcollagenenrichment.TheCARSandTPEF/SHGimageswereinaccordancewiththehistologyresults.Conclusion:TheseresultssuggesttheneedtodevelopanovelCARSmicroendoscopethatcanbeusedincombinationwithTPEF/SHGtodistinguishcholesteatomafrominflammatorytissues.

简介：AIMTo把主要、周期性的pterygium外科的长期的结果与三种不同技术作比较：联合结膜自体移植和覆盖羊膜的膜移植(有AMT的猫)，结膜自体移植移植(猫)独自一个、羊膜的膜移植(AMT)alone.METHODSIn这回顾的研究，142个pterygium病人的142只眼睛(104主要，38周期性)经历了猫(组A)，AMT(组B)或有AMT(组C)的猫分别地后面的外科的切除基于复发和手术后的complications.RESULTSThe数字被考察并且比较一样的描述在下面)，18(10，8)并且2(1，1)在组A，B，和C分别地；干燥眼睛是22(16，6)，27(18，9)并且7(3，4)；结膜发炎是30(17，13)，27(16，11)并且11(6，5)。在组C(主要或周期性的任何一个或两个)的病人主要在组A或B比那些显示出显著地更好的结果(P<0.05)关于上述临床的effects.CONCLUSIONCombined猫并且过分AMT比猫或AMT为主要、周期性的pterygium外科有复发和手术后的复杂并发症的显著地更低的率独自一个。

简介：ObjectiveTheaimofthisstudyistoinvestigatetheeffectoftransfectedhTERTgeneoncellapoptosisofnewbornratcochlearbasilarmembranecells(CBMCs).MethodsCBMCsisolatedfromnewbornratcochlearweretransfectedusingaplasmidcontaininghumantelomerasereverasetranscriptasegene(pCI-neo-hTERT),andwerescreenedusingG418toobtainstabletransfectedcelllines.Cellapoptosisratewasanalyzedbyflowcytometry.hTERTandapoptosisrelatedgenesexpressionweredetectedbyreversetranscriptasepolymerasechainreaction(RT-PCR).ResultshTERTgeneexpressionwasdetected72hoursaftergenetransfectionintransfectedcells.TheapoptoticrateoftransfectedCBMCssignificantlyreduced.Expressionofapoptosisrelatedgenescorrespondinglychanged.ConclusionTransfectionofhTERTgeneleadstoreducedapoptosisrateinnewbornratCBMCs.andlowerexpressionofapaf1,Caspase3andBCL2intransfectedcellsascomparedtothatofnormalCBMCs.

简介：ＴＨＥＥＦＦＥＣＴＯＦＲＥＴＩＮＯＩＣＡＣＩＤＯＮＣＥＬＬＭＥＭＢＲＡＮＥＡＮＤＭＥＴＡＳＴＡＴＩＣＡＢＩＬＩＴＹＯＦＭＯＵＳＥＦＯＲＥＳＴＯＭＡＣＨＣＡＲＣＩＮＯＭＡＣＥＬＬＹｕＸｉａｏｄａｎ于晓；ＺｈａｏＸｕｅｍｅｉ赵雪梅；ＧａｏＪｉｎ高进（Ｉｎ...

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简介：Objective:InfraredTympanicThermometer(ITT)isoneofthemostusefulinstrumentsforaccuratelymeasuringtemperature.TheeffectsofearpathologiesonITTmeasurementremainunclear.Thepurposeofthisstudyistodetermineiftympanicmembraneperforation(TMP)affectsITTmeasurementsinadultpatients.Materialandmethods:Atotalof90adultpatientswithmonauralcentralTMPwereenrolledinthisstudy.Patientswerecategorizedintothreesubgroupsaccordingtoperforationsize(1-3mm,4-7mm,and8-10mm).Thetympanictemperaturesoftheaffectedandunaffectedsites,andsubgroupswerecomparedwitheachother.Results:Thisstudycontained54(60%)malesand36(40%)femalesrangingfrom20to58yearsofage(meanage:30.74±9.61years).ThemeantympanictemperatureofthesideaffectedwithTMPwas36.34oC±0.61oC.Themeantympanictemperatureoftheunaffectedsidewithhealthyandintacttympanicmembranewas36.33oC±0.6oC.ThePearsoncorrelationscoreforthetympanictemperaturesandthesizeofTMPwas0.22whichwasnotsignificant(r=-0.12).Conclusion:TMPandperforationsizedonotaffectITTmeasurementsinadultpatients.

简介：ＥＸＰＲＥＳＳＩＯＮＯＦＥＢＶＬＡＴＥＮＴＭＥＭＢＲＡＮＥＰＲＯＴＥＩＮＩＮＥＳＯＰＨＡＧＥＡＬＣＡＲＣＩＮＯＭＡＡＮＤＰＡＲＡＣＡＮＣＥＲＯＵＳＭＵＣＯＳＡＷｕＭｉｎｇｙａｏ吴名耀ＬｉａｎｇＹｉｎｇｒｕｉ梁英锐ＷｕＸｉａｎｙｉｎｇ吴贤英Ｄｅｐａｒ...

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简介：Theobjectiveofthispaperistodesignaporouspolyvinylalcohol(PVA)basedoncompositemembranewithcertainmechanicalstrengthandbiocompatibilitiesservingastissueregenerativescaffolds.PVA-glycosaminoglycan(GAG)-typeIcollagen(COL)compositemembranewasfabricatedbyPVAwithdifferentmolecularweight(Mw)andalcoholysisdegree(AD)beingblendedwithcertainamountsofGAGandCOLanddriedat38℃for24h.Thewatercontentofthecompositemembraneswerefrom61.9%to95.1%andswellingratiorangedfrom123.6%to621.7%.Scanningelectronmicroscope(SEM)analysisprovedthatPVA-GAG-COLcompositemembranehasporousandhomogenousstructure.Biocompatibilitytestresultsshowedthatthecompositemembranewasnontoxic,whichcouldpromoteadhesionandproliferationoffibroblastsonthecompositemembrane.Inconclusion,PVA-GAG-COLcompositemembranewithhighwatercontentandswellingratio,suitablemechanicalstrengthandgoodbiocompatibility,haspotentialintissueengineeringandregenerativemedicine.更多还原