简介:目的探讨深部真菌病病理诊断的价值。方法回顾性分析我院1995年1月-2004年12月期间,经病理确诊为深部真菌病45例患者的临床及病理资料,其中副鼻窦真菌感染14例;肺部真菌病19例;胃肠道真菌病4例;口腔真菌病2例,脑部真菌病2例,其他真菌病4例。结果我院近5年来真菌病的确诊病例明显增多,且内脏及器官真菌病患者多合并基础性疾病,如血液病、肿瘤等。部分病例的致病菌根据病理确定有曲霉、念珠菌及隐球菌等。临床上主要采用手术结合氟康唑静滴的治疗方法。结论我院经病理确诊的真菌病例呈上升趋势,病理组织学特点结合特殊染色可将大部分致病菌鉴定至属,治疗前最好进行培养鉴定至种。
简介:组蛋白甲基化是参予细胞的过程的一个多样的数组的重要epigenetic现象并且被发现了与癌症被联系。几的Recentidentification嘘一demethylases证明了那嘘一甲基化是一个可逆过程。通过一条候选人途径,我们化学上有简历作为H3K27demethylase识别了JMJD3。进HeLa房间的JMJD3的Transfection引起了整齐的乙醇H3K27的特定的减小,但是没在di-和单音的甲基H3K27上有效果,或嘘H3K4和H3K9上的一离氨酸methylations。Theenzymatic活动要求JmjC域和被建议了为余因子绑定重要的保存组氨酸。试管内生物化学的实验证明那JMJD3directly催化demethylation。另外,我们发现JMJD3起来在前列腺癌症,和它的表示调整了在变形前列腺癌症是更高的。因此,我们作为能够把整齐的乙醇组从移开的ademethylase识别了JMJD3嘘一H3离氨酸27并且起来在前列腺癌症调整了。
简介:AninteractivetooltovisualizetheK-stringcompositionoflongDNAsequencesincludingbacterialcompletegenomesisdescribed.Itisespeciallyusefulforexploringshortpalindromicstructuresinthesequences.TheSeeDNAprogramrunsonRedHatLinuxwithGTK+support.Itdisplaystwo-dimensional(2D)orone-dimensional(1D)histogramsoftheK-stringdistributionofagivensequenceand/oritsrandomizedcounterpart.ItisalsocapableofshowingthedifferenceofK-stringdistributionsbetweentwosequences.TheCsourcecodeusingtheGTK+packageisfreelyavailable.
简介:目的探讨适合RVVC患者的治疗方案。方法对45例RVVC患者进行阴道分泌物悬滴法检查和真菌培养法检查,根据药敏结果氟康唑(对氟康唑耐药改用伊曲康唑)口服联合两性霉素B阴道用药强化治疗3个月,再用克霉唑阴道片巩固治疗6个月,停药后定期随访1a,记录研究对象主诉,并取阴道分泌物进行悬滴法和培养法检查是否存在念珠菌。结果45例研究对象的阴道分泌物中,白念珠菌39例(86.67%),光滑念珠菌4例(8.89%),克柔念珠菌1例(2.22%),热带念珠菌1例(2.22%)。念珠菌对伊曲康唑、氟康唑、伏立康唑、5-氟胞嘧啶和两性霉素B的耐药率分别为28.89%、22.22%、17.78%、8.89%和0.00%。随访1a中共有4例复发,治疗的有效率为91.11%,无效率为8.89%。结论RVVC的主要致病菌是白念珠菌。念珠菌对两性霉素B的敏感性高、耐药性低。氟康唑或伊曲康唑口服联合两性霉素B阴道局部用药作强化治疗加克霉唑阴道片巩固治疗,有较高RVVC治疗的有效率。
简介:Ionizingradiationisoneofthemosteffectivetoolsincancertherapy.Inapreviousstudy,wereportedthatproteintyrosinekinase(PTK)inhibitorsmodulatetheradiationresponsesinthehumanchronicmyelogenousleukemia(CML)celllineK562.Thereceptortyrosinekinaseinhibitor,genistein,delayedradiation-inducedcelldeath,whilenon-receptertyrosinekinaseinhibitor,herbimycinA(HMA)enhancesradiation-inducedapoptosis.Inthisstudy,wefocusedonthemodulationofradiation-inducedcelldeathbygenisteinandperformedPCR-selectsuppressionsubtractivehybridization(SSH)tounderstanditsmolecularmechanism.Weidentifiedhumanthymidinekinase1(TK1),whichiscellcycleregulatorygeneandconfirmedexpressionofTK1mRNAbyNorthernblotanalysis.ExpressionofTK1mRNAandTK1enzymaticactivitywereparallelintheirincreaseanddecrease.TK1isinvolvedinG1-Sphasetransitionofcellcycleprogression.Incellcycleanalysis,weshowedthatradiationinducedG2arrestinK562cellsbutitwasnotabletosustain.However,theadditionofgenisteintoirradiatedcellssustainedaprolongedG2arrestupto120h.Inaddition,theexpressionofcellcycle-relatedproteins,cyclinAandcyclinB1,providedtheevidencesofG1/SprogressionandG2-arrest,andtheirrelationshipwithTK1incellstreatedwithradiationandgenistein.TheseresultssuggestthattheactivationofTK1maybecriticaltomodulatetheradiation-inducedcelldeathandcellcycleprogressioninirradiatedK562cells.
简介:生节是对在昆虫的细菌的挑战的占优势的细胞的防卫反应。在这研究,Chrysomyamegacephala的第三个中间形态幼虫与细菌被注射,Escherichia关口iK12(106CFU/mL,2μL),立即在eicosanoid生合成的禁止者的注射以前,它严厉地减少的生节反应。测试幼虫与2(dexamethasone),cyclo-oxygenase(消炎痛,布洛芬和piroxicam),双cyclo-oxygenase/lipoxygenase(phenidone)和lipoxygenase(esculetin)和这些减少了的phospholipase的特定的禁止者被对待除了esculetin的生节。细菌的影响在注射(5nodules/larva)的2h以内是明显的,并且在8h以后增加了到最大值(与15nodules/larva),然后显著地减少了超过24h(9nodules/larva)。dexamethasone的禁止的影响在注射(4对5nodules/larva)的2h以内是明显的,并且生节显著地与控制相比被减少,在24h(5对8nodules/larva)上。布洛芬,消炎痛,piroxicam和phenidone的增加的剂量导致了小瘤的减少的数字。小瘤继续在蛹的阶段期间存在。然而,dexamethasone的效果被与eicosanoid先锋多元不堡和对待注射细菌的昆虫颠倒丰满的酸,arachidonic酸。这些调查结果同意了我们eicosanoid能调停的看法响应在另一Dipteran昆虫C的细菌的感染的细胞的防卫机制。megacephala。
简介:目的检测大鼠肢体缺血-再灌注后脑组织iNOS基因表达的变化.方法SD大鼠,随机分为肢体缺血-再灌注(I-R)组、肢体单纯缺血(I)组及正常对照(N)组,通过夹闭腹主动脉末端4?h,或/和开放2~24?h,复制I、I-R组动物模型,半定量RT-PCR方法检测脑组织iNOSmRNA表达的变化,免疫组化染色法观测脑组织内iNOS及过氧亚硝基阴离子(ONOO-)的硝基化产物硝基酪氨酸(NT)的生成与分布.结果N组脑组织iNOSmRNA未检出,I组及I-R组脑组织iNOSmRNA均有表达,再灌注2?h,iNOSmRNA表达量显著升高(P<0.01,vsN组),再灌注6?h达到高峰,随后下降,24?h仍有少量表达;I及I-R组脑组织均有iNOS阳性细胞,I-R组见于大脑皮层各区、海马、尾状核,I组仅见于皮层后肢区及尾状核.I-R组脑组织可见弥散分布的NT阳性神经元,I组偶见NT阳性神经元.结论大鼠肢体缺血-再灌后脑组织iNOS基因表达显著增强,且有时相变化特征.
简介:ImmunizationwithinactivatedautoreactiveTcellsmayinduceidiotypeanti-idiotypicreactionstodepleteautoreac-tireTcells,whichareinvolvedinautoimmunediseases.However,itisunknownwhetherattenuatedactivatedhealthyautologousT-cellimmunizationcouldincreaseanti-tumorimmuneresponses.Tothisend,C57B1/6micewereimmunizedwithattenuatedactivatedautologousTcells.Thesplenocytesfromimmunizedmiceshowedahigherproliferativeabil-itythanthatfromnaivemice.ThespecialphenotypeanalysisshowedthatthereweremoreCDS+TcellsandCD62L+Tcellsinimmunizedmiceafter24hofculturewith10%fetalcalfserumcompletemediuminvitro(P<0.01).TheseresultsdemonstratedthatthisimmunizationmayactivateTcellsinvivo.Furthermore,thesplenocytesfromimmunizedmicerevealedresistancetoactivation-inducedcelldeath(AICD)invitro.TofurtherstudytherelativegenesthatareresponsibleforthehigherproliferationandresistancetoAICD,theexpressionofFas/Fasligand(FasL)andGADD45βwasmeasuredbyreal-timePCR.TheresultsindicatedthatGADD45βtranscriptionwashigherinthesplenocytesfromimmunizedmicethanthatinthenaivemice.Inaddition,theFasexpressionshowedaparallelhigher,butFasLdidnotchangeobviously.Toinvestigatethebiologicfunctionsinducedbyimmunizationinvivo,atumormodelwasestablishedbyEL-4tumorcellinoculationinC57/B1mice.MicereceivingautologousT-cellimmunizationhadsignificantlyinhibitedtumorgrowthinvivo(P<0.01).ThisstudyimplicatedthatimmunizationwithattenuatedactivatedautologousTcellsenhancesanti-tumorimmuneresponsesthatparticipateintumorgrowthinhibition.
简介:WehaverecentlyclonedapathogeninducibleblastresistancegenePi-khfromtheindicaricelineTetepusingapositionalcloningapproach.Inthisstudy,wecarriedoutstructuralorganizationanalysisofthePi-khlocusinbothindicaandjaponicaricelines.A100kbregioncontaining50kbupstreamand50kbdown-streamsequencesflankingtothePi-khlocuswasselectedfortheinvestigation.Atotalof16genesinindicaand15genesinjaponicawerepredictedandanno-tatedinthisregion.TheaverageGCcontentofindicaandjaponicagenesinthisregionwas53.15%and49.3%,respectively.Bothindicaandjaponicasequenceswerepolymorphicforsimplesequencerepeatshavingmono-,di-,tri-,tetra-,andpentanucleotides.SequenceanalysisofthespecificblastresistantPi-khalleleofTetepandthesusceptiblePi-khalleleofthejaponicaricelineNipponbareshoweddifferencesinthenumberanddistributionofmotifsinvolvedinphosphorylation,resultingintheresistancephenotypeinTetep.