简介:Theirretrievablefateofneuronsdominatedtheneurosciencerhetoricforthefirsthalfofthiscentury,apositionthatwasfiercelycontestedandrecentlydebunkedbyextensivestudiescarriedoutinthefieldofneuroregenerationresearch.Theturningpointcameintheyear1928,whenRamonY.Cajal’s(Lobato,2008)worksuggestedthattheregenerativecapacityof
简介:BACKGROUND:Previousresearchhasrevealedthatsomatostatincaninduceepilepsy,andthatthelevelsofneuropeptideYmayincreaseandbecomemoreactiveinbrainareaswithepilepticseizures.OBJECTIVE:ToobservetheeffectofGanodermalucidumsporepowderontheneuropeptideYandsomatostatincontentinthecerebralcortexandhippocampalregionsofseizureratsinducedbypentylenetetrazol(PTZ).Furthermore,toverifyanyeffectofGanodermalucidumsporepowderoninhibitionofepilepticseizures.DESIGN,TIMEANDSETTING:ArandomizedgroupanimalstudywasperformedinAugust2007intheSchoolofBasicMedicalSciences,JiamusiUniversity(Jiamusi,Heilongjiang,China).MATERIALS:Thirtyhealthy,male,Wistarrats,aged12weeksandweighing180–220g,weretakenastheexperimentalanimals.PTZ(SigmaCompany,UnitedStates)wasusedtoinduceepilepsy.Ganodermalucidumspores(Leyss,exFrvariety)werepurchasedfromJiamusiCityWildGrowingCaseoftheGanodermaLucidum(China).Rabbitanti-somatostatinantibodiesandsecondaryantibodieswerepurchasedfromWuhanBosterCompany(China).NeuropeptideYradioimmunoassaykitwaspurchasedfromBeijingFuruiBiotechnologyCompany(China).METHODS:Thirtyratswererandomlydividedintothreegroups:acontrolgroup,anepilepsymodelgroupandaGanodermalucidumspore-treatedgroup.Eachgroupcontained10animals.RatsintheepilepsymodelgroupweretreatedwithintraperitonealinjectionsofPTZandgastricperfusionofphysiologicsaline.IntheGanodermalucidumspore-treatedgroup,intraperitonealinjectionofPTZandgastricperfusionofGanodermalucidumsporepowderwereadministered.Theblankcontrolgroupwasonlyadministeredwiththephysiologicalsalinebyintraperitonealinjectionandgastricperfusion.MAINOUTCOMEMEASURES:ImmunohistochemicalstainingandradioimmunoassaymethodswereusedtoobservethechangesofsomatostatinandneuropeptideYcontentinbraintissueofepilepticrats,aswellasthemorphologyofneurons
简介:ThisstudysoughttoidentifydifferentiallyexpressedproteinsinSH-SY5Ycellstreatedwithvalproicacid,usingtwo-dimensionaldifferencegelelectrophoresisanalysis.Threeproteinswereunambi-guouslyidentified:theeukaryotictranslationinitiationfactor4Aisoform1andATP6V1B2proteinweredownregulated,whiletheheterogeneousnuclearribonucleoproteinKwasupregulated.Moreover,allthreeproteinsareassociatedwithalteredexpressionduetooxidativestress.Ma-trix-assistedlaserdesorption/ionization-timeofflightmassspectrometryandproteinimmunoblottingassayconfirmedthedifferentialexpressionofeukaryotictranslationinitiationfactor4Aisoform1.Theresultsindicatethatvalproicacidexertsanantioxidationeffectbyregulatingtheexpressionofeukaryotictranslationinitiationfactor4Aisoform1.
简介:Freeradicalsinducedbytraumaticbraininjuryhavedeleteriouseffectsonthefunctionandantioxidantvitaminlevelsofseveralorgansystemsincludingthebrain.Melatoninpossessesantioxidanteffectonthebrainbymaintainingantioxidantenzymeandvitaminlevels.Weinvestigatedtheeffectsofmelatoninonantioxidantabilityinthecerebralcortexandbloodoftraumaticbraininjuryrats.Resultsshowedthatthecerebralcortexβ-carotene,vitaminC,vitaminE,reducedglutathione,anderythrocytereducedglutathionelevels,andplasmavitaminClevelweredecreasedbytraumaticbraininjurywhereastheywereincreasedfollowingmelatonintreatment.Inconclusion,melatoninseemstohaveprotectiveeffectsontraumaticbraininjury-inducedcerebralcortexandbloodtoxicitybyinhibitingfreeradicalformationandsupportingantioxidantvitaminredoxsystem.
简介:Mitochondriaplayanimportantroleinneuronalapoptosiscausedbycerebralischemia,andtheroleismediatedbytheexpressionofmitochondrialproteins.Thisstudyinvestigatedtheinvolvementofmitochondrialproteinsinhippocampalcellapoptosisaftertransientcerebralischemia-reperfusioninjuryinagedratsusingacomparativeproteomicsstrategy.Ourexperimentalresultsshowthattheagedratbrainissensitivetoischemia-reperfusioninjuryandthattransientischemialedtocellapoptosisinthehippocampusandchangesinmemoryandcognitionofagedrats.Differentialproteomicsanalysissuggestedthatthisphenomenonmaybemediatedbymitochondrialproteinsassociatedwithenergymetabolismandapoptosisinagedrats.Thisstudyprovidespotentialdrugtargetsforthetreatmentoftransientcerebralischemia-reperfusioninjury.
简介:BACKGROUND:ItisknownthatacupuncturetherapycandecreaseplasmaneuropeptideY(NPY)levelsinpatientswithcerebralinfarction,butdifferenttypesofacupuncturetherapyusedinvariousstagesofcerebralinfarctionhavenotbeenevaluated.OBJECTIVE:Toexploretheeffectofacupuncturetherapyonresuscitation(XingnaoKaiqiao)andplasmaNPYlevelsinpatientswithveryearlystageacutecerebralinfarction.DESIGN,TIMEANDSETTING:Thiscase-controlledstudywasperformedattheAffiliatedHospitaloftheMedicalCollegeoftheChinesePeople'sArmedPoliceForcebetweenSeptember2004andOctober2005.PARTICIPANTS:Sixtypatientswithacutecerebralinfarctionof≤6hourswereusedinthisstudy.Patientswererandomlydividedintoanacupuncturetherapygroup(n=30)andaroutinetreatmentgroup(n=30).Another30healthysubjectswereusedasthecontrolgroup.METHODS:TheacupuncturetherapyofXingnaoKaiqiaousedintheacupuncturetherapygroupwasbasedonroutinewesternmedicaltreatmentandwasperformedatbilateralNeiguan(PC6)usingthetwirling,reinforcing-reducingmethod,Renzhong(DU26)usingheavybird-peckingneedling,Sanyinjiao(SP6)usingreinforcingandreducingbyliftingandthrustingtheneedle,Jiquan(HT1),Weizhong(BL40)andChize(LU5)usingreinforcingandreducingbyliftingandthrustingtheneedle.Theacupuncturelastedfor14days.Patientsintheroutinetreatmentgroupunderwentroutinemedicaltreatmentandnointerventionwasgiventosubjectsinthecontrolgroup.MAINOUTCOMEMEASURES:A4mLvenousbloodsamplewasobtainedatdifferenttimepoints,i.e.,immediatelyafterhospitalization,thenextmorning,7and14daysaftertreatment,tomeasureplasmaNPYlevelspre-andpost-treatmentusingtheradio-immunitymethod.RESULTS:TheplasmaNPYlevelsweresignificantlyhigherinboththeroutinetreatmentgroupandtheacupuncturetherapygroupthaninthecontrolgrouppre-andpost-treatment(P<0.01).Inparticular,theplasmaNPYlevelsinboththeacupuncturetherapygroupa
简介:目的:调查广东省三级医院护理不良事件报告情况,为完善护理不良事件管理提供依据。方法:采用整群抽样法,对全省110家三级医院进行问卷调查。结果:广东省三级医院均建立了护理不良事件报告制度,2013年全年共报告17211件,平均每家医院报告156.5件,每万名出院患者报告39.4件;不同类别的不良事件监测报告程度有差异,院内跌倒、给药错误、院内压疮的监测上报比例较高,分别达到98.2%、97.2%、94.5%;对尿管引发泌尿系感染的监测上报率最低(74.5%);综合医院的患者压疮、跌倒、自杀发生率高于专科医院;护士人力资源配置较足的医院压疮、跌倒致伤的发生率较低。结论:我省三级医院护理不良事件报告系统已初步建立;各医院对护理不良事件的报告情况有较大差异;应加强护理人力资源配置,进一步完善护理不良事件监测及上报信息系统,多举措提高护理不良事件的上报水平,保障患者安全。
简介:目的比较TOAST分型中不明原因型脑梗死与其他亚型脑梗死的危险因素,探讨不明原因型的潜在病因。方法采用回顾性方法,对198例脑梗死患者进行TOAST分型,比较TOAST分型中不明病因型的危险因素、病史、生化指标与大动脉粥样硬化型和小动脉闭塞型的差异,推测不明原因型的可能病因。结果不明原因型组的发病年龄比小动脉闭塞型组小(P〈0.01),与大动脉粥样硬化型组无显著差异。不明原因型组男性所占比例高于小动脉闭塞型组(P〈0.05),与大动脉粥样硬化型组无显著差异。不明原因型组吸烟比例高于小动脉闭塞型组(P〈0.05),与大动脉粥样硬化型组差别无显著差异。不明原因型组饮酒比例高于大动脉粥样硬化型组(P〈0.01)。不明原因型组患心脏病者的比例高于大动脉粥样硬化型组和小动脉闭塞型组(P〈0.05;P〈0.01)。不明原因型组总胆固醇(TC)和低密度脂蛋白(LDL)高于小动脉闭塞型组(P〈0.05)。不明原因型组超敏C反应蛋白(hs-CRP)低于大动脉粥样硬化型组(P〈0.01)。而3组间高血压病史、糖尿病史和卒中病史比例、甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白(HDL)、低密度脂蛋白(LDL)、超敏C反应蛋白(hs-CRP)、尿酸(UA)、空腹血糖(Glu)及白细胞(WBC)水平无显著差异。单因素Logistic回归分析显示年龄、饮酒史、心脏病史与不明原因型组发病有显著关系。多因素Logistic回归分析显示年龄、饮酒史、心脏病史是不明原因型脑梗死患者发病的独立危险因素;而hs-CRP并未增加不明原因型患者的风险。结论年龄、饮酒及心脏病史与不明原因型有较强相关性,对不明原因型脑梗死患者应强化这方面的检查,可能会减少不明原因型的比例。