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1.
应用免疫组化SP法对32 例早期胃癌及癌旁粘膜和24 例慢性萎缩性胃炎中bcl 2 的表达同时进行检测,结果癌旁和慢性萎缩性胃炎中不典型增生、单纯增生、腺体扩张和癌旁肠化均显示bcl 2 高表达,与癌无显著差异( P> 005),应视作癌前病变。bcl 2 在癌前病变和早期胃癌中的表达显著高于周围正常粘膜( P<001),提示bcl 2 高表达是胃癌发生的早期事件,在胃癌发生上起着重要作用,可作为胃癌早期诊断的可靠指标  相似文献   

2.
INSITUEXPRESSIONOFTHECELLADHESIONMOLECULEINGASTRICCARCINOMAANDCHRONICGASTRITISChenGaoping(陈高平);LiuYong(刘勇);RenHuimi(任惠民);LiHe...  相似文献   

3.
Recently,alargenumberofresearchesindicatedthatoccurenceanddevelopmentofbreastcarcinomaswerecorrelatedwithhighexpressionofblockingapoptosisoncogene,mutationofantioncogeneandexpressionofcontrollingcellproliferativeoncogene.Therewerefewreportsondocumentsofquantitativestudyofexpressionaboutblockingapoptosisoncogene--hcf--2(Bcellleukaemia/lymphomagene),productofP53proteinandproliferatingcellnuclearantigen(PCNA)inbreastcarcinoma.Ourpurposewastoinvestigatequantitativeindexinrelationtoclinicalpathol…  相似文献   

4.
用免疫组化法对20例正常子宫内膜、22例增生性内膜及41例子宫内膜癌标本进行凋亡抑制基因(B-Celllymphoma/leukemia-2,BCL-2)、增殖细胞核抗原(Prolifer-atingcellnuclearantigen,PCNA)蛋白检测,以探讨其在子宫内膜病变发生、发展中的作用。结果两者表达率(20.0%、90.9%、31.7%;40.0%、72.7%、97.6%)均存在显著差异。子宫内膜癌组织中,BCL-2染色强度与组织学分级无相关性,PCNA染色则有相关性,且1级与3级间存在差异。两种蛋白表达间无相关性。提示BCL-2蛋白在正常内膜周期性变化及增生性病变的发生、发展中发挥作用,并可能为进一步基因异常改变提供有利条件,而在子宫内膜癌中其表达可能与细胞分化有关。PCNA有助于了解内膜病变的生物学行为,有可能成为判定子宫内膜癌恶性程度及预后的客观指标之一。  相似文献   

5.
It is reported that the 1oss of wtp53 function isbelieved to play an important role in the pathogen-esis of carcinomas of the uterine cervix. It has beenshown that the Ps3 gene product may be inactivatedin three principal ways: Ofollowing somatic pointmutation F @following loss of heterozygosity J and@ following human papillomavirus (HPV) infec-tion,as the viral oncoprotein E6 is known to bind,stabilise and ultimately degrade wild type P,,['J.The bcl--2 proto--onocgene is involved in the t…  相似文献   

6.
Thesequenceofeventsthroughwhichischaemialeadstocelldeathispoorlyunderstood.Anumberofendogenouscomponentshavebeenimplicatedinthesubsequentneurodegenerativeprocess,suchasglutamate,freeradicals,calciumandpolyamines,allofwhichhavebeenshowedtobeelevatedinassociationwithischaemicinsults.Agentssuchasglutamineandcalciumhaveestablishedrapidandpotentphysiologicalactions,thatareexaggeratedduringischaemia,leadingtoamassiveanduncontrolledamplificationoftheirnormaleffects.Animportantcomponentofthephysiologi…  相似文献   

7.
用MG7-Ag和AgNOR法对30例胃癌、20例胃粘膜上皮中重度异型增生、31例肠上皮化生及20例正常胃粘膜进行了研究。结果显示胃癌组MG7-Ag强阳性率高于异型增生和肠上皮化生(P<0.05)。胃癌细胞核内AgNOR形态和计数与良性病变明显不同。以MG7-Ag强阳性表达和细胞核内AgNOR计数明显增多(>9.12)或大小不等是团块状分布为阳性指标,MG7-Ag和AgNOR联用,胃癌检出率达90%,显著高于单项使用的检出率(P<0.025)。结果表明,MG7-Ag与AgNOR联用,对区分胃癌与癌前病变具有重要价值。  相似文献   

8.
应用免疫组化技术(ABC法),对94例胃癌及癌旁组织中表皮生长因子受体(EGFR)和C-erbB-2的表达进行了研究,结果显示:①EGFR和C-erbR-2在正常胃粘膜中均无表达,而在胃癌中的表达率分别为40.4%和46.8%,癌旁组织及新生血管中EGFR有阳性表达,C-erbB-2表达只限于癌灶,癌旁组织均为阴性;②EGFR和C-erbB-2的表达与患者的性别、年龄和肿瘤大小无关(P>0.05),而与肿瘤的生长方式和浆膜层受浸与否关系密切(P<0.05);③肿瘤的分化程度、有无淋巴结转移和临床分期与EGFR的表达有相关性(P<0.01),而与C-erbB-2的表达不相关(P>0.05);④EGFR表达与生存期密切相关(P<0.01),EGFR阳性者预后差,阴性者预后好,而C-erbB-2表达与生存期不相关(P>0.05);⑤EGFR和C-erbB-2在胃癌中的表达无明显关系(P>0.05)。结果表明:①EGFR表达与胃癌的恶性程度有明显的关系;②C-erbB-2表达是胃癌发生的晚期事件,是恶性细胞的标志;③EGFR可作为预测胃癌的预后和指导治疗的指标之一。④EGFR和C-erbB-2在胃癌中的表达相互独立。  相似文献   

9.
Abnormalitiesofthep5 3generepresentthemostcommongeneticalterationsinhumancancer[1] .p2 1proteinhasbeenreportedtobeacriticaldownstreameffectorofp5 3andapotentinhibitorofcyclin depen dentkinase[2 ] .AsaresultofDNAdamage ,p5 3in ducestheexpressionofitsdownstreamgene :…  相似文献   

10.
应用免疫组化ABC法对48例胃癌进行胃泌素、生长抑素、胰高血糖素标记。结果胃泌素阳性14例(29.2%),生长抑素阳性9例(18.7%),两者均阳性者6例(12.5%)。未分化腺癌中内分泌细胞阳性率较高分化腺癌高。胃泌素阳性组其浆膜浸润率13/14例(92.9%),淋巴结转移率11/14例(78.5%),明显高于阴性组(P<0.01)。生长抑素阳性组浆膜浸润率6/9例(66.7%),淋巴结转移率4/9例(44.4%),与阴性组相比均无明显差异(P>0.05),提示胃泌素有促进癌细胞生长的作用,癌细胞生长愈活跃,其侵袭能力愈强,转移率愈高。  相似文献   

11.
A PRELIMINARY STUDY ON SURVIVIN AND BCL-2 EXPRESSION IN CERVICAL CARCINOMAS   总被引:1,自引:0,他引:1  
Dysregulationofapoptosisisthoughttocon tributetocellmalignanttransformationandtumorprogression[1] .ThisistypicallyexemplifiedbytheoverexpressionofantiapoptosisBcl 2proteininfollic ularlymphomaanditscriticalroleinmultidrugresis tanceanddiseaseprogression .I…  相似文献   

12.
为明确p16基因及其产物在胆囊恶性肿瘤中表达的意义,用免疫组化ABC法对46例胆囊癌p16INK4/CDKN2表达进行检测,结果表明:p16INK4/CDKN2在良性病变中的阳性率高于胆囊癌(P<0.05)。该蛋白的失活或缺失主要见于肿瘤的中、晚阶段,与胆囊外浸润和淋巴转移密切相关(P<0.01),与肿瘤的病理类型及分化程度无关(P>0.05)。检测p16INK4/CDKN2对临床正确地估计肿瘤的侵袭性、淋巴转移潜能及判断预后具有重要价值。  相似文献   

13.
Glutamateexcitotoxicityplaysakeyroleintheinductionofneuronalcelldeathoccurringinmanyneuropathies.Bax ,apro apoptoticgeneoftheBcl 2family ,hasbeenshowntobeinvolvedindevelopmentalneuronaldeath .Neuronaldeathfollowingexcitotoxicdamagehasbeenthoughttoreflectn…  相似文献   

14.
为探讨P16蛋白(MTS1基因产物)在肺癌中的表达及其临床意义,采用免疫组化ABC法对56例肺癌组织及30例癌旁正常肺组织中P16蛋白进行了检测。结果显示肺癌组织中P16蛋白表达率为51.78%,癌旁正常肺组织中为90.00%,两者差异显著(P<0.005),P16蛋白表达与肺癌分型无关(P>0.05),与肺癌病理分级呈正相关(P<0.05),与肺癌TNM分期和肺门及(或)纵隔淋巴结转移呈负相关(P<0.05)。提示P16蛋白可作为诊断肺癌、评估其生物学行为的有用指标  相似文献   

15.
Inthehumansolidneoplasm ,therearemanykindsofcomponentcellsbesidesthetumorcell,suchasinterstitialcell ,immunocyteandvascularcell.Theydependoneachothertocontributetothegene sis,development,invasionandmetastasisoftumor .Theinteractionsamongthemarecomplicated …  相似文献   

16.
应用LSAB免疫组化法和酶联亲和组化法对41例胃癌P53蛋白和雌激素受体(ER)、孕激素受体(PR)的表达进行研究。结果显示:胃癌中P53蛋白、ER、PR的阳性率分别为41.46%、21.95%、14.63%。P53蛋白表达与肿瘤组织学分级、浸润汉度、临床分期及淋巴结转移呈正相关,与ER、PR表达呈负相关。在ER、PR阴性者中P53蛋白阳性中高于ER、PR阳性者。P53蛋白表达与组织学类型无关。提示检测P53蛋白、ER、PR的表达,可作为判断胃癌细胞增殖程度、转移潜能及预后和内分泌治疗有效率的重要参考指标。  相似文献   

17.
Objective To explore the influence of the acute cauda equina compression on the iumbosacral spinal cord; To clarify the pathologic change of the motor neuron after acute cauda equina compression. Methods 27 canis familiaris were randomly divided into 9 groups (3 in each) : one for normal group, one for control group, and seven for compression groups. The control group and compressed groups was given operation and the sac made of silica gel was placed under the lamina of L5-6. Water was injected into the sac until their posterior legs paralysis in compressed groups, the animals had been compressed for 4, 8, 12, 24, 48, 72, 168 hours. The control group were not injected water. Cells apoptosis was investigated with the technology of TdT-mediated biotin dUTP nick end-labeling (TUNEL) staining. The Bcl-2 Bax and Caspase-3 protein was investigated by immunohistochemical method. Results TUNEL staining cells in anterior horn presented after compressed 8-12 hours, and at 72 hours the number of positive cells got to maximum, it decreased subsequently after 168 hours. The protein of Bax, Bcl-2 expressed a little in normal motor neuron. The caspase-3 protein didn't express in normal ceil. They all reached the peak at 72 hours after compression. Conclusion The apoptosis of motor neuron occurred earlier after eauda equina acute compression. Bax protein restrained Bcl-2 protein then active caspase-3 and conduced apoptosis of motor neuron.  相似文献   

18.
Intra-cerebral hemorrhage is a common clinicaldisease,with a high mortality and morbidity.So itis one of the clinical hot topics.It has been foundinrecent years that there is a close relationship bet weenthe cell apoptosis and the course or prognosis of in-tra-cerebral hemorrhage.Bcl-2,as the apoptosis-adjusted gene,plays ani mportant role in the courseof cell apoptosis,but the mechanis min the cell ap-optosis in intra-cerebral hemorrhage remains un-clear.In this experi ment,with the model bui…  相似文献   

19.
利用细胞凋亡抑制基因bcl-2单克隆抗体及免疫组化LSAB法,对正常外阴皮肤、慢性外阴营养不良、不典型增生和外阴癌组织进行标记,发现bcl-2蛋白在正常外阴皮肤基底层中有弱阳性表达;在增生型营养不良、不典型增生及外阴癌组织中表达率有不同程度增高,与外阴硬化苔癣型和混合型营养不良有显著差异(P<0.05,P<0.05,P<0.01);而增生型与不典型增生bcl-2基因蛋白表达无明显差异(P>0.05);外阴癌的表达率最高;该基因蛋白表达与外阴癌细胞分化程度有关,与临床分期无关。  相似文献   

20.
Thet(l4;18)chromosomaltranslocationsarerecognizedasacytogeneticabnormalityinB-celllymphomas,especiallyinfollicularlymphomas',>.Aputativeoncogeneonchromosome18bandq2ltermedB-cellleukemia-lymphoma-2(bcl-2)isjux-taposedtosegmentsoftheimmunog1obulin(Ig)heavy-chaingenelocatedonchromosome14bandq32.Bcl-2rearrangementsarecommonlyfoundinfollicularlymphomasintheAmericant2i.Howev-er,theconflictingresultsregardtoincidenceofthetranslocationinJapaneseB-ce1llymphomashasyieldedusingcytogeneticana1ysisandSo…  相似文献   

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