简介:Abstract:Thisstudyinvestigatedtherelationshipbetweenhumanpapillomavirus(HPV)genotypeandexpressionofp53andp21^WAH1.Expressionofp53andp21^WAH1in35casesofcondylomaacuminatumspecimensinfectedbyHPV6/llandHPV16/18werestudiedusingimmunohistochemicalstaining.Allspecimensofthecondylomaacuminatumcasewerepositiveforexpressionofp53andp21^WAH1.Theexpressionofp53incondylomaacuminatuminfectedbyHPV16/18wassignificantlylowerthanthatinspecimensinfectedbyHPV6/ll.However,expressionofp21wAHbetweenthetwogroupswasnotsignificantlydifferent.Expressionofp53incondylomaacuminatumislikelyrelatedtoHPVgenotype,expressionofp21^WAH1wasnotrelatedtoHPVgenotype.
简介:目的探讨p27^kipl、p53蛋白在胃癌中的表达关系和预后意义。方法用免疫组化法同步检测20例胃良性病变标本及80例胃癌组织中pZ7、p53的表达。结果80例胃癌中p27蛋白阳性率为41,25%(33/80),低于胃良性病变标本100%(20/20),p53阳性率在胃癌中为43.75%(35/80),而在胃良性病变标本中为0。胃癌p27阳性组的p53阳性率为66.67%,显著高于p27阴性组(P<0.05),p27与p53呈正相关,p27与预后弱相关,p53与预后密切相关。结论p27、p53相互作用,对胃癌发生发展起重要作用;p27表达愈强,p53表达愈弱,说明预后较好,反之则差,联合检测pZ7、p53可辅助胃癌诊断,估计预后,选择治疗方案。
简介:Objective:Toinvestigatethepost-transcriptionalregulationofp21WAF1/CIP1byp53.Methods:TheMDA-MB-468cellshaveendogenousmutantp53andtheMCF7cellslineshavewtp53.Recombinantp53expressionandp21WAF1/CIP1inductionweredetectedbyWesternblotanalysis.Northernblotanalysiswascarriedouttoexaminewhetherchangesinp21WAF1/CIP1proteinlevelsinMCF7cellstreatedwithAdCMVp53arereflectedatthemRNAlevel.FlowcytometricanalysisofMCF7cellsfollowingoverexpressionofrecombination.Results:Theratioofp53:p21WAF1/CIP1wasbelow1attheearlystagesofAdCMVp53infection,butincreasedto1.6byday3andto9.7byday5post-infection.Asexpected,p21WAF1/CIP1expressionwasnotdetectableinMDA-MB-468cellsdespitethepresenceofhighlevelsofmutantp53protein.TheG1/SratiosinuntreatedcontrolsandAdCMVβgalinfectedMCF7cellswere1.10and1.35,respectively.ByNorthernblotanalyzingthep21WAF1/CIP1:GAPDHratiosatdifferenttimepointsagainsttheratioattimepoint0,amaximum3-foldinductionofp21WAF1/CIP1mRNAexpressionrelativetountreatedcontrolwasobservedonday1post-infection.TheflowcytometricanalysisindicatedthatMCF7cellsinfectedwithAdCMVp53undergoG1arrestatbothtimepointsstudied,withG1/Sratiosrangingfrom5.54atday1to5.65atday7.TheG1/SratiosinuntreatedcontrolsandAdCMVβgalinfectedMCF7cellswere1.10and1.35,respectively.Conclusion:Thisstudydemonstratedthatp53couldregulatep21WAF1/CIP1geneexpressionatboththetranscriptionalandpost-transcriptionallevelsinMCF7cells.Thelattermechanismmaybeinvolvedinorberesponsiblefor,theinductionofcellcyclearrestbytranscription-defectivemutantsofp53.
简介:瞄准:在胃的很好区分的内分泌的肿瘤(GWDET)(ECL房间良性肿瘤)调查cyclin依赖的激酶禁止者p21和p27的表示。方法:p21和p27的表情从匹配GWDET的诊断标准的16个病人在内视镜的活体检视标本immunhistochemically被检验。弱或强壮的积极原子染色任何一个的百分比被注意。有年龄,性,肿瘤本地化,multifocality和伴随的长期的萎缩性胃炎,神经内分泌房间增生(NEH),神经内分泌发育异常(NED),肠的组织变形(IM),Ki-67增长索引和临床的结果的免疫表情的协会也被评估。结果:所有情况与43.6%的一个吝啬的表示分数表示了p27,当31.3%案例显示出任何p21表示时。p21和p27免疫表情显著地与对方一起被相关(P<0.01),并且表示p21组有更高的p27表示分数(68%对22%)。p21和p27表情在女人是更低的,在在某处除没有粘膜下层扩展的宫底以外,其肿瘤被定位的非衰退的粘膜和盒子。在上矛盾,p21和p27表情与粘膜下层扩展和萎缩性胃炎在男性和病人是更高的。介绍更低的p27分数的盒子有独居的肿瘤显示出既不NEH-NED也不IM。尽管有,有更低的p21表示的盒子介绍了NEH-NED伴随的多焦点的肿瘤。然而,p21的关联和p27表情都没与年龄和Ki-67表示被发现。结论:p27广泛地在GWDET被表示,当p21表示在三分之二个盒子中稀少、观察时。p21和p27表情的损失可以与不同良性肿瘤肿瘤子类型被相关;然而,更多的研究被需要在胃肠的内分泌的肿瘤估计这些未来的标记的角色。
简介:目的:探讨p53家族新成员p63及p73在脑胶质瘤中的表达情况,以及在不同病理分级的表达变化。方法:采用免疫组化S-P方法检测66例不同病理分级胶质瘤p63及p73蛋白的表达情况,与置换一抗的空白对照组比较,并同时进行组间对照。结果:p63及p73在66例脑胶质瘤患者中明显表达,p63表达阳性率为42.42%,p73表达阳性率为31.82%。组间对照:p63组Ⅱ~Ⅳ级与I~Ⅱ级比较P<0.Ol:p73组Ⅲ~Ⅳ级与I~Ⅱ级比较P<0.05,Ⅱ—Ⅲ级与I~Ⅱ级比较,x^2=2.268,P>0.05。结论:p63及p73作为p53家族的新成员可能是候选的抑癌基因。
简介:目的:探讨nm23,mdm2,p185,p21及p53在骨巨细胞瘤(GCT)的表达及与GCT病理分级和复发的关系。方法:应用SP免疫组织化学方法检测nm23,mdm2,p185,p21p53在52例GCT中的表达(GCT按Jaffe分级,I级15例,II例25例,Ⅲ级12例),结果:52GCT中nm23,mdm2,p185,p21andp53的阳性表达率分别为40.4%(21/52),34.6%(18/52),21.2%(11/52),13.5%(7/52),26.9%(14/52)。其阳性表达与病理分级差异均无显著性(P值分别为0.797,0.871,0.441;0.658;0.699)。nm23,mdm2,p185,p21,p53在复发和无复发的病例中,阳性表达率分别为69.2%(9/13),30.8%(12/39),61.5%(8/13),25.6%(10/39),38.5%(5/13),15.4%(6/39);23.1%(3/13),10.3%(4/29),46.2%(6/13),20.5%(8/39)。nm23,mdm2表达与GCT复发率差异有显著性(P值分别为0.003,0.018),而p185,p21,p53的阳性表达与GCT复发差异无显著性(P>0.05),结论:nm23,mdm2,p185,p21及p53在GCT中的表达与病理分级差异无关,而nm23,mdm2的表达与其复发有关。
简介:患者男,25岁.因反复阵发性心悸、头晕就诊.T36.8℃,P92次/min,BP110/70mmHg.心肺体征(-).临床诊断:阵发性室上性心动过速.阵发性心悸发作时,心动过速呈突发突止特点.图为V1导联:P波直立,为异位P波.p-P及R-R间期呈长短交替,分别为0.42s及0.35s,互差0.07s,平均0.385s,频率156次/min.R-P间期固定.为起源于交接区心动过速.QRS波呈rsr'型.P及R形态一致.上述现象为交接区异位起搏点分别经快、慢2条径路同步、传导速度比例恒定(R-P间期恒定)的顺传、逆传所致(见梯形图).P-及R波形态一致,系2条径路分别到达心室及心房前,均经共同通道到达心室及心房之故.
简介:Geneticchangesofseveraltumorsuppressorgenessuchasp53andpl6areinvolvedinthegenesisordevelopmentofglioma.["’]Recently,anovelgenewhichencodesaproteinwithsimilaritytop53throughoutitsDNA-binding,transactivation,andoligomerizationdomains,calledp73,wasident...
简介:Objective:TostudythebiologicalactivityofMycoplasmapenetrans35kDalipoprotein(P35)invitro,prokaryoticexpressionvectorpQE31/p35wasconstructedandrecombinantfusionproteinP35(rP35)wasexpressedinE.coli.Methods:Thep35genewasamplifiedbypolymerasechainreaction(PCR),clonedtopQE31,andapositiveclonewasscreened.PCR-mediatedmutagenesiswasusedtochangethetwo"TGA"tripletsto"TGG"tripletswithinthep35gene.ProductionoftherecombinantproteinwasinducedbytheadditionofIPTGtotheE.coliculture,rP35waspurifiedwithaNi-NTASpinKitandrP35purificationwasanalyzedbyWesternblot.Results:About1KbPCRamplificationwasclonedintopQE31.Thetwo"TGA"tripletswithinthep35geneweresuccessfullychangedto"TGG"triplets.ThepQE31/p35vectorexpressedaproteinwithacalculatedmolecularmassof37.4kDainE.coli.Westernblotindicatedthe37.4kDaproteinwasrP35.Conclusion:PQE311p35,aprokaryoticexpressionvectorcontainingp35gene,wassuccessfullyconstructedandexpressedinE.coli.
简介:客观:在乳癌学习P-glycoprotein(P-gp)的临床的意义。方法:在乳癌的60种情况中的P-gp的表示被immunohistochemistry检验。到化疗的P-gp表示和反应比较地与变形乳癌在19个病人被调查。结果:P-gp在乳癌的60个案例中的48.3%个中是积极的。P-gp表示不与病人的年龄,月经地位,包含的腋的淋巴节点的数字,临床的阶段,组织学的类型,和神经质的受体地位有关(P>0.05)。转移(62.1%)和死亡(51.7%)的频率比在否定情况中在P-gp积极案例中是更高的(16.1%对12.9%,P<0.005)。P-gp积极案例(48.3%)的5年的幸存率比否定案例(87.1%)的显著地低(P<0.05)。在收到了辅助化疗的病人,远转移比在P-gp否定案例(57.1%)(P=0.0468)中更经常发生在P-gp积极案例(94.7%)中。更多的P-gp否定病人(7/9)对化疗(P=0.0055)比积极病人(1/10)应答。结论:P-gp表示的Immunohistochemical检查在在乳癌病人预言反应到化疗和预后是有用的。P-gp确实与差的预后被联系。
简介:Objective:Toinvestigatetheroleandclinicalsignificanceofp16proteininCondylomaAcuminatum(CA)anditscancerization.Methods:Theexpressionofp16proteinwastestedin33CAsamplesand7cancerizedCAsamplesbyimmunohistochemicalassays.Results:Therewasabnormalexpressionofp16proteininCAandcancerizedCA,mainlymajorproteinexpression.Thep16proteinexpresseedindifferentlocationsindifferentcaseswasasfollows:Inbasallayercellsinnormalcuits;inspinouslayer,granularlayerandstratumcorneumlayercellsinCA;inkeratinpearlperipheralandspinouslayercellsincancerizedCA.Conclusion..Therewasmajorexpressionofp16proteininCAandcancerizedCA,andtheseproteinofthetwogroupsmightnotnaturallybethesame.Ourstudyindicatedthatinclinicalpractice,whenmajorp16proteinexpressioninCAoccurs,it'sriskofcancerizationshoudbesuspected.