简介:Oxidativestressiscloselyassociatedwithsecondarycelldeathinmanydisordersofthecentralnervoussystemincludingstroke,Parkinson’sdisease,Alzheimer’sdisease.Amongmanyaberrantoxidativestress-associatedproteins,DJ-1hasbeenassociatedwiththeoxidativestresscelldeathcascadeprimarilyinParkinson’sdisease.Althoughprincipallyexpressedinthecytoplasmandnucleus,DJ-1canbesecretedintotheserumunderpathologicalcondition.Recently,aclosepathologicalassociationbetweenDJ-1andoxidativestressinstrokehasbeenimplicated.Tothisend,weandothershavedemonstratedtheimportantroleofmitochondriainneuroprotectionforstrokebydemonstratingthatthetranslocationofDJ-1inthemitochondriacouldpotentiallymitigatemitochondrialinjury.Here,wediscussourrecentfindingstestingthehypothesisthatDJ-1notonlyfunctionsasaformofintracellularprotectionfromoxidativestress,butthatitalsoutilizesparacrineand/orautocrinecuesinordertoaccomplishextracellularsignalingbetweenneighboringneuronalcells,resultinginneuroprotection.ThisarticlehighlightsrecentevidencesupportingthestatusofDJ-1askeyanti-oxidativestresstherapeutictargetforstroke.
简介:我们经治一诊断为橄榄体-桥脑-小脑萎缩病例,兼有视网膜变性,眼球运动障碍,小脑及锥体外系症状.
简介:目的报告1例脊髓空洞症(SM)合并Charcot关节病(CJ),通过文献复习的方法提高对该病在诊断及治疗上的认识。方法通过回顾该疾病的临床表现及典型的影像学特点,结合相关文献以求提高诊断正确率。结果该病例左肘部为典型的Charcot关节病表现,颈椎MRI确诊为Chiari畸形合并脊髓空洞症。结论临床表现及影像学特点是诊断该病的主要依据,目前尚无有效治疗手段,手术治疗有一定疗效。
简介:Thehippocampalregionofthebrainisimportantforencodingenvironmentinputsandmemoryformation.However,theunderlyingmechanismsareunclear.ToinvestigatethebehaviorofindividualneuronsinresponsetosomatosensoryinputsinthehippocampalCA1region,werecordedandanalyzedchangesinlocalfieldpotentialsandthefiringratesofindividualpyramidalcellsandinterneuronsduringtailclampinginurethane-anesthetizedrats.Wealsoexploredthemechanismsunderlyingtheneuronalresponses.Somatosensorystimulation,intheformoftailclamping,changedlocalfieldpotentialsintothetarhythm-dominatedwaveforms,decreasedthespikefiringofpyramidalcells,andincreasedinterneuronfiring.Inaddition,somatosensorystimulationattenuatedorthodromic-evokedpopulationspikes.TheseresultssuggestthatsomatosensorystimulationsuppressestheexcitabilityofpyramidalcellsinthehippocampalCA1region.Increasedinhibitionbylocalinterneuronsmightunderliethiseffect.Thesefindingsprovideinsightintothemechanismsofsignalprocessinginthehippocampusandsuggestthatsensorystimulationmighthavetherapeuticpotentialforbraindisordersassociatedwithneuronalhyperexcitability.
简介:患者,女,19岁,因自觉前额部无明显诱因疼痛伴前额部包块三月入院。近半月来疼痛加重,既往身体健康,无特殊病史。入院后行颅脑CT平扫示额部正巾颅骨局限性破坏,颅内未见异常。查体:一般情况好,前额正中可触及约3.5cm-4.0cm包块,质地中等,高于皮肤约0.6cm,边界较清楚,无压痛,余未见异常。
简介:糖原贮积病(glycogenstoragedisease,GSD)为糖原代谢障碍导致糖原在肝脏、肌肉、肾脏等组织器官中贮积所致的一组遗传代谢性疾病,根据酶缺陷不同,至少可分为12型,以GSD1型最常见,GSD1早期可继发显著的高脂血症,随年龄增长可能出现肾功能不全、高血压等远期并发症,这些均为动脉粥样硬化的危险因素,可能增加卒中风险。本文依据GSD1合并卒中的病例报告,探讨GSD1卒中发生的相关机制,目前主要有两种观点:其一认为GSD1患者是早期动脉粥样硬化、卒中的高危人群;其二认为GSD1有显著高脂血症而卒中发病率小,可能具有抗动脉粥样硬化机制,本文从以上两方面分别阐述。