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抗菌药物诱导性肠球菌耐药的实验研究
...琼脂稀释法测定药物敏感性;用PCR法检测四环素耐药基因tetM、tetL,用PCR法扩增gyrA、parC基因后测定DNA序列。结果10株实验菌中的2株诱导产生了多株稳定的四环素耐药株。耐药株的MIC分别为16~128μg/ml,与原株MIC0.25μg/ml、2μg/ml)比...
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哮喘患儿转录因子T—bet/GATA-3mRNA表达及其与杀伤性T淋巴细胞平衡间的关系
...儿T—bet/GATA-3mRNA表达水平失调,与哮喘患儿的T细胞呈现Te2优势分化密切相关。支气管哮喘简称哮喘,是儿童时期最常见的慢性呼吸道疾病。我国儿童哮喘总患病率为0.9%-1.1%,并且有逐年上升的趋势。中华儿科杂志四月第四期刊登...
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慢性肺炎支原体肺炎患儿治疗前后肺功能研究
...以36例同龄健康儿童做对照。主要参数为:达峰时间(TPTEF)、达峰时间比(TPTEF/TE)、达峰容积(VPEF)、达峰容积比(VPEF/VE)、呼吸频率(RR)、潮气量(VT/kg)。结果治疗前慢性肺炎支原体肺炎患儿潮气量明显减少,RR增快,T...
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Effectsoftomatoextractonplateletfunction:adouble-blindedcrossoverstudyinhealthyhumans
...,GrahamHorgan,JohnIBroom,DavidJWebbandAsimKDuttaroy1FromProvexisplc,Manchester,UnitedKingdom(NO,LC,andSW);RowettResearchServices,Aberdeen,UnitedKingdom(VL);BiomathematicsandStatisticsScotland,Aberdeen,UnitedKingdom(GH);theSchoolofLifeSciences,TheRobertGordonUniversity,Aberdeen,Scotland,UnitedKingdom...
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质子磁共振波谱在脑肿瘤中的应用进展
...表现为多种成分,单峰值为3.56ppm)可见于短回波时间(TE)中。mI是脂肪代谢的前体,因此细胞增殖加速时增高。mI多见于星形细胞瘤中,低级别胶质瘤中增高,非胶质细胞瘤如神经鞘瘤和脑膜瘤中较低或消失[1]。据报道,血...
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RAGEExpressioninRhabdomyosarcomaCellsResultsinMyogenicDifferentiationandReducedProliferationMigrationInvasivenessandTumorGrowth
...ionofreceptorforadvancedglycationendproducts(RAGE)byitsligand,HMGB1,stimulatesmyogenesisviaaCdc42-Rac1-MKK6-p38mitogen-activatedproteinkinasepathway.Inaddition,functionalinactivationofRAGEinmyoblastsresultsinreducedmyogenesis,increasedproliferation,andtumorformationinvivo.WeshowherethatTE671rhabdomy...
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Creutzfeldt-Jakob病的磁共振诊断
...ZhaoJiexu JiangXinmei GuYangying (DepartmentofNeurology,TheFirstTeachingHospitalofNormanBethuneUniversityofMedicalSciences,Changchun130021) ObjectiveToassessadiagnosticutilityofimagingfeaturesofmagneticresonanceimages(MRI)ofpatientswithCreutzfeldt-Jakobdisease(CJD).MethodsToreviewt...
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基因组DNA的提取
...液:配方见第一章。 5、其它试剂:液氮、异丙醇、TE缓冲液,无水乙醇、70%乙醇、3mol/LNaAc。 四、操作步骤: (一)水稻幼苗或其它禾木科植物基因组DNA提取 1.在50ml离心管中加入20ml提取缓冲液Ⅰ,60℃水浴预热。...
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吸入糖皮质激素对毛细支气管炎患儿肺功能影响的临床观察
...睡眠时的潮式呼吸肺功能。主要参数为:达峰时间比(TPTEF/TE),达峰容积比(VPEF/VE),静态顺应性(Crs)和气道阻力(Rrs)。结果治疗组雾化吸入治疗前后潮式呼吸的各项参数有不同程度的改变TPTEF/TE(t=2.08,P<0.05),VPEF/VE(...
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DNA重组实验中常用的技术
...涤DNA,同上离心去上清真空抽干。 (10)加50μl的1×TE(含20μg/ml无DNA酶的胰RNA酶),振荡,贮存于-20℃。 (二)质粒DNA的大量制备 (1)同上1.(1) (2)将1ml含菌液倒入含相应抗生素的Lb100ml中,37℃振荡培养至A5...
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微量元素对严重创伤家兔外周WBC水平及存活率的影响
...立家兔严重肢体创伤模型,随机分正常对照组、重伤组、TE治疗组,重伤组中死亡家兔12只归为死亡组(死亡率40%),检测伤前及伤后6h和1、3、6、9、14d血常规。结果重伤组与TE治疗组比较,死亡率明显增高(P<0.05);家兔伤后1...
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0.35T磁共振肩关节成像的技术探讨
...部分为封闭保守治疗取得良好效果。1.2检查方法GEsignaExcite0.35T永磁磁共振扫描仪,多功能线圈,单侧扫描患者取仰卧标准解剖正位,头先进,定位十字线经双侧肱骨头连线中点上3cm和正中矢状面对准线圈横轴中心。一般以横轴或...
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组织工程学简介
组织工程学(Tissueengineering,TE)是生物医学工程学中的一个新的分支,是应用生命科学和工程学的原理与技术,设计、构造、改良、培育和保养活组织,以修复或重建组织器官的结构,维持或改善组织器官功能的一门新兴的边缘学...
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MRI扫描对肝门区胆管癌的诊断价值
...MRCP+enhance)forhepatichilarcholangiocaicinoma.MethodsAllofthecaseswereadoptedintheplainscans,enhancescansandMRCPscans.Results7wereinfiltrativecases,3nodularcases,1papillarycase.5casesoftheconcourseoftheleftandrighthepaticducts,3casesofductulihepaticuscommunis,2casesoftherighthepaticductsand1caseoft...
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子宫内膜癌的MRI表现及诊断
...nan453000. 【Abstract】ObjectiveTostudyMRimagingappearancesandevaluatethevalueanddiagnosticaccuracyofstaginginendometrialcarcinoma.Methods22patientswithhistologicallyprovedendometrialcarcinomawereexamˉinedby0.38TRosonexMegnetomMRimagingmachine,Alllessionwerediagnosedonthebasisoffractionala...
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治疗原发性开角型青光眼的临床研究
...,在治疗原发性开角型青光眼方面,改良VCO组的成功率较TE组高。术后早期并发症相对较少。原发性开角型青光眼通常早期无症状。等到病人感觉到视野缺损时,视神经萎缩程度一般已很明显。中心视力通常最后受影响,而周边...
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低场GRL序列对脊椎恶性肿瘤的应用价值
...描采用安科公司Openmark2000型MRI机,常规矢状位T1WI:TR440、TE22;T2WI:TR4500、TE105。GRL序列T*2WI:TR300、TE16、FA60。2结果38例转移瘤中,累及颈椎6例,胸椎15例,腰椎12例骶椎5例。4例多发骨髓瘤中,累及颈椎2例,胸腰椎各1例。常规T1...
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原发性低颅压的MRI表现(附4例报吿
...发性低颅压;磁共振成像MRIfindingsofspontaneousintracranialhypotension(astudyof4cases)WUPu-zhao.DepartmentofCTRoom,HanjiangHospital,Danjiangkou442700,China[Abstract]ObjectiveToexplorethemagneticresonanceimaging(MRI)findingsofspontaneousintracranialhypotension(SIH).MethodsFourcasesofS...
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DysregulationofClaudin-LeadstoLossofE-CadherinExpressionandtheIncreasedInvasionofEsophagealSquamousCellCarcinomaCells
【摘要】Theclaudinsconstitutea24-memberfamilyofproteinsthatarecriticalforthefunctionandformationoftightjunctions.Here,weexaminetheexpressionofclaudin-7insquamouscellcarcinoma(SCC)oftheesophagusanditspossibleroleintumorprogression.Inthenormalesophagus,expressionofclaudin-7wasconfinedtothecellmemb...
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Rathke裂囊肿的MRI表现
...键词】Rathke裂囊肿体层摄影术X线计算机磁共振成像CHARACTERISTICAPPEARANCEONMRIOFRATHKE’SCLEFTCYSTYUDONGSHENG,LIUSHIEN,GUOYONGCUN,etal(DepartmentofRadiology,TheAffiliatedHospitalofQingdaoUniversityMedicalCollege,Qingdao266003,China)[ABSTRACT]ObjectiveTostudythecha...
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椎管内肿瘤54例MRI分析
...型扫描机进行扫描。采用自旋回波(SE)序列,T1WI:TR/TE500ms/20ms,T2WI:TR/TE2400ms/100ms。常规扫描冠状位、矢状位、轴位。全部病例均先平扫,其中49例又行强化扫描。观察肿瘤的部位、形态、边界、信号特征、强化表现及...
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原发性输尿管癌的磁共振诊断
...输尿管恶性肿瘤磁共振成像 DiagnosticvalueofMRinprimaryureteralcarcinoma GuoXianri,TongTingting,CaoDengpan,CaoGuoquan (DepartmentofRadiology,theFirstAffiliatedHospitalofWenzhouMedicalCollege,Wenzhou325000,China)ABSTRACT:ObjectiveToanalyzetheimagingmanifestationsandtoevaluate...
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不同的样本处理方法对乙型肝炎病毒DNA检测的影响
...清样本的最佳处理方法。方法 分别用不同缓冲液(PBS与TE)对血清进行1:1或1:10稀释,不同浓度去污剂(TritonX-100与NP40)及巯基乙醇处理血清样本,以及用硫氰酸胍-酚-氯仿抽提、蛋白酶K消化、碱裂解、辛酸钠裂解等方法处理血清样...
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脑胶质瘤的MRI表现及1H-MRS研究
...tal,CentralSouthUniversity,Changsha410008,ChinaAbstract]ObjectiveToevaluatethefindingsanddiagnosticvalueinbraingliomas.Toevaluatethefindingsandclinicalapplicationsof1H-MRSofbraingliomas.Methods60patientsofbraingliomaswerestudied,allofthemunderwentsurgeryandwereapprovedbypathology.The60patientsunde...
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外周血DNA提取技术
...复一次。室温挥发残留的乙醇,但不要让DNA完全干燥。加TE液20ul溶解DNA,置于摇床平台缓慢摇动,DNA完全溶解通常需12-24小时。 5.DNA的浓度测定及纯度判定:取DNA溶液用TE液做适量稀释,以TE液作空白对照,在紫外分光光度计上...
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采取改良SDS法对天麻花葶DNA提取研究
...icalcollege550004,China【Abstract】TheDNAofGastrodiaelata.scapewereextractedwithanimprovedSDSmethod.TheextractedDNAwasexaminedbyultravioletabsorptiontestandagarosegelelectrophoresis.TheresultsshowedthattheimprovedSDSmethodwassuitableforDNAextractioninGastrodiaelata.ThepurityoftheextractedDNAwasver...
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3D-FFE薄层双倍增强扫描在脑囊虫病定性诊断中的意义
...ospitalofXingtai,Hebei054001,China 【Abstract】ObjectiveToevaluatethequalitydiagnositicvalueof3D-FFEthinthicknessenhancementscanninginbraincysticercosis.MethodsAccordingto238braincysticercosispatientsconventionalsequencescanning(T1WI/SE,T2WI/TSE,FLAIRandT1WI/SEenhancementscanning)...
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FLAIR序列在颅脑疾病诊断中的应用
...al,Weifang261000,China 【Abstract】ObjectiveTostudythevalueoffluidattenuatedinversionrecovery(FLAIR)sequenceincerebraldiseases.Methods64patientswithcerebraldiseaseswereexaminedwithbothFLAIRandSEsequences,andacomparativestudyofFLAIRandSEimagingwasmade.ResultsFLAIRsequencedetected82fociofdi...
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磁共振对视网膜脱离的诊断价值
...fShenzhen,Shenzhen518035,China 【Abstract】ObjectiveTostudythecharacteristicmagneticresnonanceimaging(MRI)featuresofretinaldetachmentbythehighfieldMRIandestimateitsvalueindiagnosingretinaldetachment.Methods11patients(male4cases,female7cases,4~68yearsold,averageis42)withretinaldetachmentwere...
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高场MRI对小脑膜瘤的诊断价值
...ment.MethodsElevencasesofsmallmeningomadiagnosedbyhighfieldMRIwerecollected,andtheirimagecharacteristicswereanalyzed.ResultsMostmeningiomasshowedisointensesignalonT1weightedimages(10/11)andonT2weightedimages(8/11),buthyperintenseorslighthyperintensesignalonT2fluidattenuatedinvers...