简介:手术部分切除一例罕见巨大颅鼻沟通嗅神经母细胞瘤,术后放疗,病人临床症状消失,术后3月复查MRI示肿瘤消失.随访16月无复发,病人可正常工作、生活.经复习文献进一步明确这种临床少见疾病的诊断及治疗.
简介:患者,女,32岁,以“头颈部反复酸痛3年,伴视物模糊半年”为主诉于2013年12月3日入院,神经系统体格检查未见明显异常.入院后头颅MRI平扫示:右侧后颅窝可见1个类圆形异常信号软组织块影,大小约5.5cm×3.7cm×3.2cm,T1WI等低信号,T2WI高低混杂信号,内可见血管流空信号,未见“脑膜尾征”.磁共振扩散加权成像(diffusionweightedimaging,DWI)信号稍高,增强扫描肿块明显强化,未见明显坏死区,其后上缘宽基底与小脑幕相连,与右侧横窦分界不清,邻近小脑组织明显受推压并见水肿带,第四脑室明显受压变窄并左移,桥脑轻度受压,第三脑室及双侧侧脑室明显扩张,蝶鞍稍扩
简介:目的探讨大脑前动脉A1段动脉瘤的血管内治疗方法及临床疗效。方法回顾性分析2013年4月至2017年2月采用血管内方法治疗的25例大脑前动脉A1段动脉瘤的临床资料,15例采用单纯弹簧圈栓塞,5例采用支架辅助弹簧圈栓塞,1例A1段宽颈动脉瘤合并烟雾综合征予以球囊辅助栓塞,1例微小动脉瘤使用2枚enterprise支架重叠释放置入,3例行弹簧圈闭塞载瘤动脉。结果术后即刻造影显示:Raymond分级Ⅰ级19例,Ⅱ级5例,Ⅲ级1例;无弹簧圈突入载瘤血管、术中动脉瘤破裂及支架内血栓形成等并发症。出院时,改良Rankin量表(mRS)评分0分17例,1分5例,2分1例,4分2例。16例术后临床和影像学随访3~24个月,未出现再出血和脑缺血并发症,mRS评分0分11例,1分3例,2分1例;2例复发,均为单纯弹簧圈填塞的动脉瘤,继续行支架辅助弹簧圈栓塞,术后无并发症。结论血管内方法治疗大脑前动脉A1段动脉瘤安全有效,为保证成功栓塞,需要结合各种辅助技术和方法,其远期疗效需要进一步随访。
简介:目的探讨抑癌基因DLC1在人脑胶质瘤组织中的表达和功能.方法收集广州医学院第二附属医院神经外科自2007年1月至2009年6月手术切除的胶质瘤标本39例及同期行颅脑减压术治疗的颅脑损伤患者的正常脑组织10例,实时荧光定量PCR检测DLC1mRNA的表达;将质粒pCS2-DLC1转染体外常规培养的人胶质瘤细胞株U251,同时用空载体pCS2-MT转染作为对照组,转染后36h应用Westernblot检测DLC1表达标签蛋白Mvc,应用MTT检测U251细胞增殖能力的变化.结果实时荧光定量PCR结果显示胶质瘤组织中DLC1mRNA表达水平高于对照组,差异有统计学意义(P=0.000),且Ⅰ级胶质瘤组织DLC1mRNA的表达水平高于Ⅱ、Ⅲ、Ⅳ级,差异有统计学意义(平均秩次分别为44.20、30.23、32.25、31.0,H=18.818,P=0.001);Westernblot检测结果显示DLC1标签蛋白Mvc在pCS2-DLCI转染组细胞呈过表达,在pCS2-MT转染组细胞无明显表达;MTT检测显示pCS2-DLC1转染组U251细胞吸光度值高于pCS2-MT转染组,差异有统计学意义(P=0.002).结论高表达的DLC1可能促进胶质瘤的形成和发展.
简介:Hypoxia-induciblefactor1(HIF-1)attenuatesamyloid-betaproteinneurotoxicityanddecreasesapoptosisinducedbyoxidativestressorhypoxiaincorticalneurons.Inthisstudy,weconstructedarecombinantadeno-associatedvirus(rAAV)vectorexpressingthehumanHIF-1αgene(rAAV-HIF-1α),andtestedtheassumptionthatrAAV-HIF-1αrepresseshippocampalneuronalapoptosisinducedbyamyloid-betaprotein.OurresultsconfirmedthatrAAV-HIF-1αsignificantlyreducesapoptosisinducedbyamyloid-betaproteininprimaryculturedhippocampalneurons.DirectintracerebralrAAV-HIF-1αadministrationalsoinducedrobustandprolongedHIF-1αproductioninrathippocampus.SinglerAAV-HIF-1αadministrationresultedindecreasedapoptosisofhippocampalneuronsinanAlzheimer’sdiseaseratmodelestablishedbyintracerebroventricularinjectionofaggregatedamyloid-betaprotein(25–35).OurinvitroandinvivofindingsdemonstratethatHIF-1haspotentialforattenuatinghippocampalneuronalapoptosisinducedbyamyloid-betaprotein,andprovidesexperimentalsupportfortreatmentofneurodegenerativediseasesusinggenetherapy.
简介:目的总结颅眶沟通黏膜相关淋巴组织结外边缘区B细胞(MALT)淋巴瘤的诊治经验。方法回顾性分析l例眼眶MALT淋巴瘤原位复发及颅内、颌面部转移患者的临床资料,结合文献复习,讨沦其转移方式、影像学特点及治疗措施。结果该患者行联合手术治疗颅眶占位病变,颌面部病变未处理,术后病理学结果为MALT淋巴瘤;术后复查MRI示右侧眼眶肿瘤全切,术后2周左眼视力较术前改善。结论眼眶MALT淋巴瘤转移至颅内罕见,需于术联合放疗或化疗,术后长期随访十分重要。
简介:GinsenosideRg1(Rg1)hasanti-agingandanti-neurodegenerativeeffects.However,themechanismsunderlyingtheseactionsremainunclear.TheaimofthepresentstudywastodeterminewhetherRg1affectshippocampalsurvivalandneuriteoutgrowthinvitroafterexposuretoamyloid-betapeptidefragment25–35(Aβ25–35),andtoexplorewhethertheextracellularsignal-regulatedkinase(ERK)andAktsignalingpathwaysareinvolvedinthesebiologicalprocesses.Weculturedhippocampalneuronsfromnewbornratsfor24hours,thenaddedRg1tothemediumforanother24hours,withorwithoutpharmacologicalinhibitorsofthemitogen-activatedproteinkinase(MAPK)familyorAktsignalingpathwaysforafurther24hours.Wethenimmunostainedtheneuronsforgrowthassociatedprotein-43,andmeasuredneuritelength.Inaseparateexperiment,weexposedculturedhippocampalneuronstoAβ25–35for30minutes,beforeaddingRg1for48hours,withorwithoutAktorMAPKinhibitors,andassessedneuronalsurvivalusingHoechst33258staining,andphosphorylationofERK1/2andAktbywesternblotanalysis.Rg1inducedneuriteoutgrowth,andthiseffectwasblockedbyAPI-2(Aktinhibitor)andPD98059(MAPK/ERKkinaseinhibitor),butnotbySP600125orSB203580(inhibitorsofc-JunN-terminalkinaseandp38MAPK,respectively).Consistentwiththiseffect,Rg1upregulatedthephosphorylationofAktandERK1/2;theseeffectswerereversedbyAPI-2andPD98059,respectively.Inaddition,Rg1significantlyreversedAβ25–35-inducedapoptosis;thiseffectwasblockedbyAPI-2andPD98059,butnotbySP600125orSB203580.Finally,Rg1significantlyreversedtheAβ25–35-induceddecreaseinAktandERK1/2phosphorylation,butAPI-2preventedthisreversal.OurresultsindicatethatRg1enhancesneuriteoutgrowthandprotectsagainstAβ25–35-induceddamage,andthatitsmechanismmayinvolvetheactivationofAktandERK1/2signaling.更多还原