简介:目的探讨室管膜下瘤的临床、影像学和病理特点。方法对9例室管膜下瘤患者的临床资料进行回顾性分析,对手术切除的肿瘤组织标本进行病理及免疫组化检查。结果本组患者的男女比例为2∶1,平均年龄54岁;术后随访10~109个月,均无转移和复发。MRI检查示,肿瘤位于侧脑室内8例、右颞叶1例,T1WI呈等信号6例、低信号及高信号各1例,T2WI高信号6例、等信号2例;增强扫描轻度增强、无明显强化各4例。病理检查示,瘤组织胶质纤维丰富,瘤细胞成簇状分布其间;除1例右颞叶肿瘤无微囊结构外,其余均有微囊形成。免疫组化检查:瘤细胞胶质纤维酸性蛋白(GFAP)、S-100、波形蛋白(Vimentin)阳性表达,突触素(SYN)、上皮膜抗原(EMA)、神经元特异性核心抗原(Neu-N)为阴性;Ki-67标记指数4%1例,1%~3%8例。结论室管膜下瘤多发于老年男性,进展缓慢,预后较好。其大多发生在侧脑室内,发生在脑实质的少见。认识其临床、影像学和病理特点有利于诊断及治疗。
简介:BACKGROUND:Matrixmetalloproteinase-9(MMP-9)expressionincreaseswithintracerebralhemorrhage,andparticipatesinthepathophysiologicalprocessesofsecondarybraininjuryafterintracerebralhemorrhage.OBJECTIVE:ToinvestigatetheeffectsofmildhypothermiaonMMP-9expressionandbrainedemaintheperihematomalregionofexperimentalintracerebralhemorrhagerats.DESIGN,TIMEANDSETTING:Therandomized,controlledexperimentwasperformedattheCentralLaboratoryofShandongProvincialHospitalbetweenMayandSeptember2007.MATERIALS:Seventy-two,Wistar,malerats,12-weeksold,wereusedforthisstudy.Rabbitanti-MMP-9primaryantibodywaspurchasedfromBoster,China.METHODS:Wistarratswereequallyandrandomlydividedintonormothermiaandmildhypothermiagroups.Thetwogroupseachcomprisedcontrol,6-hourintracerebralhemorrhage,24-hourintracerebralhemorrhage,48-hourintracerebralhemorrhage,72-hourintracerebralhemorrhage,and1-weekintracerebralhemorrhagesubgroups,withsixratsineachsubgroup.Ratmodelsofintracerebralhemorrhagewereestablishedbyinjecting100μLofautologousbloodintotheratcaudatenucleus.Ratsinthemildhypothermiagroupreceivedfourhoursoflocalmildhypothermiaimmediatelyfollowingtheinjection.Intracerebraltemperaturewasmaintainedat(33±0.5)℃.Subsequently,intracerebraltemperaturewasspontaneouslyrecoveredat25℃.Ratsinthecontrolsubgroupwerenotinjectedwithautologousbloodandreceivedonlywithintracerebralhemorrhage.MAINOUTCOMEMEASURES:BrainwatercontentandMMP-9expressionsurroundingthehematomaregion.RESULTS:MMP-9expressionincreasedat6hours,andbrainedemareachedapeakat48hoursafterintracerebralhemorrhage.MMP-9expressionwassignificantlydecreasedinthemildhypothermiagroupcomparedwiththenormothermiagroupateachtimepoint(P<0.05).CONCLUSION:MildhypothermiacansignificantlyinhibitMMP-9overexpressionandrelievebrainedemafollowingintracerebralhemo
简介:目的分析急性颅内血肿清除术后继发对侧颅内血肿的发生时间,形成原因及预防治疗.方法我们自1989年9月~2001年8月收集共9例,行颅内血肿清除术.结果9例第一次手术回病房后,昏迷4例,手术对侧瞳孔逐渐增大24h内再次CT复查,发现对侧颅内血肿.另5例在第一次手术后48h复查CT,均提示手术对侧颅内血肿,血肿量在30-80ml,其中5例为脑挫裂伤伴硬脑膜下血肿,中线结构移位明显,2例为颞枕部硬膜外血肿,2例为颞叶脑内血肿.硬膜外血肿2例和颞叶脑内血肿2例手术治疗,预后良好.5例脑挫裂伤伴硬膜下血肿立即行手术治疗,清除血肿,4例血肿清除后脑搏动较弱,5例均行硬膜减张缝合并去骨瓣.手术后死亡3例,2例手术后有偏瘫.结论一侧外伤性颅内血肿在手术后继发血肿的发生率为0.8%~2.2%,多发生在48~72h之内[1].其形成原因是多方面的:急性颅内压增高引起的血管自主调节丧失,血管床扩张淤血,脑血管内外压力差增大可能也是重要因素[2].并且常在脑挫裂伤的基础上继发出血,亦可因过度换气,使用脱水降压剂及去骨瓣减压不当使颅内压骤降有关.
简介:BACKGROUND:Theintegrityofthebloodbrainbarrier(BBB)playsanimportantroleinthepatho-physiologicalprocessofcerebralischemia/reperfusioninjury.Ithasbeenrecentlyobservedthatmetalloproteinase-9(MMP-9)iscloselyrelatedtocerebralischemia/reperfusioninjuryOBJECTIVE:ThisstudywasdesignedtoobserveMMP-9expressionintheratbrainaftercerebralischemia/reperfusioninjuryandtoinvestigateitscorrelationtoBBBpermeability.DESIGN,TIMEANDSETTING:Thisstudy,arandomizedcontrolledanimalexperiment,wasperformedattheInstituteofNeurobiology,CentralSouthUniversitybetweenSeptember2005andMarch2006.MATERIALS:NinetyhealthymaleSDrats,aged3–4months,weighing200–280g,wereusedinthepresentstudy.Rabbitanti-ratMMP-9polyclonalantibody(Boster,Wuhan,China)andEvansblue(Sigma,USA)werealsoused.METHODS:Allratswererandomlydividedinto9groupswith10ratsineachgroup:normalcontrolgroup,sham-operatedgroup,andischemiafor2hoursfollowedbyreperfusionfor3,6,12hours,1,2,4and7daysgroups.Intheischemia/reperfusiongroups,ratsweresubjectedtoischemia/reperfusioninjurybysutureocclusionoftherightmiddlecerebralartery.Inthesham-operatedgroup,ratsweremerelysubjectedtovesseldissociation.Inthenormalcontrolgroup,ratswerenotmodeled.MAINOUTCOMEMEASURES:BBBpermeabilitywasassessedbydeterminingthelevelofeffusionofEvansblue.MMP-9expressionwasdetectedbyanimmunohistochemicalmethod.RESULTS:All90ratswereincludedinthefinalanalysis.BBBpermeabilityalterationwascloselycorrelatedtoischemia/reperfusiontime.BBBpermeabilitybegantoincreaseatischemia/reperfusionfor3hours,thenitgraduallyreachedapeaklevelatischemia/reperfusionfor1day,andthereafteritgraduallydecreased.MMP-9expressionbegantoincreaseatischemia/reperfusionfor3hours,thengraduallyreacheditspeaklevel2daysafterperfusion,andthereafteritgraduallydecreased.CONCLUSION: