简介:BACKGROUND:Themostprominentcharacteristicofbrainagingisdecreasedlearningandmemoryability.Thefunctionsoflearningandmemoryarecloselyrelatedtointracerebralacetylcholinesterase(AChE)andmonoamineneurotransmitteractivity.PreviousstudieshaveshownthatSchisandrachinensispolysaccharidehasananti-agingeffect.OBJECTIVE:ToexploretheeffectsofSchisandrachinensispolysaccharideonAChEactivityandmonoamineneurotransmittercontent,aswellaslearningandmemoryabilityinaD-galactose-inducedagingmousebrainmodelcomparedwiththepositivecontroldrugKangnaoling.DESIGN,TIMEANDSETTING:Completelyrandomized,controlledexperimentbasedonneurobiochemistrywasperformedatthePharmacologicalLaboratory,HenanUniversityofTraditionalChineseMedicinefromSeptembertoDecember2003.MATERIALS:SchisandrachinensiswaspurchasedfromHenanProvincialMedicinalCompany.Schisandrachinensispolysaccharidewasobtainedbywaterextractionandalcoholprecipitation.KangnaolingpelletswereprovidedbyLiaoningTianlongPharmaceutical(batchNo.20030804;statedrugpermitNo.H21023095).Atotalof50six-week-oldKunmingmicewererandomlydividedintofivegroups:blankcontrol,model,Kangnaoling,highandlowdosageSchisandrachinensispolysaccharidegroups,with10micepergroup.METHODS:Miceintheblankcontrolgroupweresubcutaneouslyinjectedwith0.5mL/20gnormalsalineintothenapeoftheneckeachday,whiletheremainingmiceweresubcutaneouslyinjectedwith5%D-galactosesalinesolution(0.5mL/20g)inthenapefor40daystoinduceabrainagingmodel.Onday11,miceinthehighandlowdosageSchisandrachinensispolysaccharidegroupswereintragastricallyinfusedwith20mg/mLand10mg/mLSchisandrachinensispolysaccharidesolution(0.2mL/10g),respectively.MicefromtheKangnaolinggroupwereintragastricallyinfusedwith35mg/mLKangnaolingsuspension(0.2ml/10g),andthemiceinthemodelgroupwereintragastricallyinfusedwiththesamevolumeofnormalsal
简介:我院收治3例垂体腺瘤合并脑血管病,现报告如下:例1,男,45岁,因'视力下降、性欲减退2年,头痛2个月'入院.体检:神志清,胡须、阴毛稀少.视力:左0.8,右眼前手动.左眼颞侧、右眼周边视野缺损.双乳房可挤出稀白乳汁.血皮质醇:上午8时为422.29nmol/l,下午4时为313.68nmol/l;血泌乳素(prolactin,PRL)>9.1nmol/l;雌二醇(estradiol,E)<70pmol/l,睾酮(testosterone,T)为5.86nmol/l,其余正常.颅脑CT、MRI示3.7cm×2.8cm大小囊、实性肿块,位于鞍内及鞍上区,视交叉明显受压.行右翼点入路肿瘤切除术.术中见右侧颈内动脉床突上段有大小为3mm的动脉瘤,给予夹闭.肿瘤位于视交叉前下方,有囊性变,质软易吸除.病理报告:垂体腺瘤.诊断:垂体腺瘤并动脉瘤.恢复顺利出院.随访5年无复发.
简介:Thegenesfor5-lipoxygenaseactivatingprotein(ALOX5AP)andphosphodiesterase4D(PDE4D)havebeendemonstratedassusceptibilitygenesforlacunarintheIcelandicandPakistanipopulations,butlittleisknownabouttheroleofthesegenesinChinesepopulations.Thepresentstudyutilizedpolymerasechainreactionandligasedetectionreactiontodetectsinglenucleotidepolymorphisms(SNPs)in280consecutivestrokepatientsand258unrelatedpopulation-basedcontrolsfromNanjing,JiangsuProvince,China.Theallelefrequency,genotypes,andhaplotypesofthetwoSNPs(rs456009andrs966221)inPDE4Dweresimilarbetweenthetwogroups.However,Aallelefrequencyofrs4073259(A/G)andrs4769055(A/C)intheALOX5APgeneexhibiteddifferencesintwogroups,andespeciallythehaplotypeoftheSNPwassignificantlydifferentbetweenthetwogroups.ResultssuggestedthattheALOX5APgenemightbeinvolvedinlacunarinfarct,whilePDE4DgenewasnotariskfactorforlacunarinfarctinindividualsfromJiangsuProvince,China.
简介:目的研究GOLPH3在胶质瘤组织中的表达及其临床意义.方法选取山东大学齐鲁医院和聊城市脑科医院神经外科自2008年7月至2009年12月间手术切除并经病理证实的人脑胶质瘤标本76例,其中Ⅰ级13例,Ⅱ27级例,Ⅲ级25例,胶质母细胞瘤11例.另取9例因脑创伤行内减压术患者的正常脑组织标本作为对照.应用RT-PCR、Westernblotting分别检测各标本中GOLPH3mRNA和GOLPH3蛋白的表达.结果RT-PCR与Westernblotting检测结果显示正常脑组织中GOLPH3mRNA和GOLPH3蛋白不表达,不同级别胶质瘤组织GOLPH3mRNA、GOLPH3蛋白的阳性表达率差异无统计学意义(P>0.05),而其表达值差异有统计学意义(P<0.05),且随着肿瘤病理级别的增高,胶质瘤组织中GOLPH3mRNA、GOLPH3蛋白表达值增高,差异有统计学意义(P<0.05).相关性检验显示GOLPH3蛋白的表达值与肿瘤的病理分级呈正相关(rs=0.961,P=0.000).结论GOLPH3在不同级别的胶质瘤组织中均有表达,其表达值与肿瘤的病理分级呈正相关,可能是胶质瘤发生发展的重要机制之一.
简介:Anumberofpreviousstudiesofacupunctureacupointspecificityhaveusedshamacupoints,shamacupunctureormeridianacupointsatagreatdistancefromeachotherascontrolsinfunctionalMRI(fMRI)experiments.However,fewstudieshavecompareddifferentmeridianacupointswithinthesamesegment,whichareassociatedwithsimilarlyintenseneedlesensations.WeperformedfMRIon12healthyyoungvolunteersandobserveddifferencesinbrainactivationelicitedbyacupunctureoftheTaixi(KI3)andQiuxu(GB40)acupoints.AcupuncturewasappliedattheTaixiandQiuxuacupoints,usingamultiple-blockfMRIdesignwiththreeblocks,involvingthreealternationsofrestingandtaskphases.Afterscanning,needlesensationwasassessed.ThebehavioralresultsrevealedthatthesubjectiveneedlesensationwassimilarbetweentheTaixiandQiuxuacupoints.ThefMRIresultsrevealedthatacupunctureattherightTaixiacupointactivatedtherightsuperiortemporalgyrus(BA22),leftmiddlefrontalgyrus(BA46)andinferiorfrontalgyrus(BA45),bilateralparietallobepostcentralgyrus(BA2),rightparietallobe(BA3),andleftparietallobe(BA40).AcupunctureattherightQiuxuacupointactivatedtheleftsuperiortemporalgyrus(BA42),rightparietallobepostcentralgyrus(BA40,BA43),rightinferiorfrontalgyrus(BA47),bilateralsuperiortemporalgyrus(BA22),andrightinsulaBA13.TheseresultssuggestthattherightTaixiandQiuxuacupointsactivateddifferentbrainareas.
简介:Inthepresentstudy,weconstructedalentivirus,FIV-CMV-GFP-miR-7-3,containingthemicroRNA-7-3geneandthegreenfluorescentproteingene,andusedittotransfecthumangliomaU251cells.Fluorescencemicroscopyshowedthat80%ofU251cellsexpressedgreenfluorescence.Real-timereversetranscriptionPCRshowedthatmicroRNA-7-3RNAexpressioninU251cellswassignificantlyincreased.ProliferationwasslowedintransfectedU251cells,andmostcellswereintheG1phaseofthecellcycle.Inaddition,theexpressionoftheserine/threonineproteinkinase2wasdecreased.ResultssuggestedthattransfectionwithalentiviruscarryingmicroRNA-7-3caneffectivelysuppressepidermalgrowthfactorreceptorpathwayactivityinU251cells,arrestcellcycletransitionfromG1phasetoSphaseandinhibitgliomacellgrowth.
简介:胶质母细胞瘤(GBM)是神经系统最常见的恶性肿瘤,预后差。多种信号分子参与GBM的发生、发展和侵袭。本文就信号传导及转录激活因子3(signaltransducersandactivatorsoftranscription3,STAT3)在GBM细胞系及动物模型中的作用机制作一综述,并且讨论以STAT3作为靶点的治疗策略。
简介:目的应用3DSlicer软件研究分析侧脑室经额角穿刺的定位点、穿刺角度、穿刺深度等参数。方法选择76例正常成人头颅CT扫描数据,应用3DSlicer软件分别进行头皮组织、颅骨、侧脑室三维结构重建,设置室间孔与外耳道连线为穿刺路径,模拟侧脑室额角穿刺,测量穿刺通道深度、矢状位及冠状位穿刺角度等参数。结果正常成人侧脑室额角穿刺,穿刺点位于冠状缝前(9.02±6.27)mm、中线旁(39.44±4.26)mm;在矢状位,穿刺路径与眼外眦和外耳道连线所成角度为(51.13±3.11)°,在冠状位,穿刺路径与正中线所成角度为(34.86±4.56)°;穿刺深度为(55.75±7.31)mm。额部穿刺点与中线、冠状缝的距离及穿刺深度与年龄因素明显相关(P〈0.05),而穿刺角度与年龄因素无明显相关性(P〉0.05)。结论基于3DSlicer软件可以对侧脑室额角穿刺参数进行无创性研究,并为侧脑室穿刺提供较为准确的定位指导。
简介:Theretinaisamultilayeredtissuethatdevelopsfollowingacentral-to-peripheralgradient.Itsstructurederivesfrommultipotentprecursors,asshownthroughclonalanalysisofretinalcelllineage.Theseprogenitorsgeneratediversecelltypes,controlledbycomplexinfluencesofintrinsicandextrinsicfactors(HatakeyamaandKageyama,2004).Severaltypesofneuronsandonemaingliacellconsti-