THE EXPRESSION AND SIGNIFICANCE OF P53 AND P21 （WAF1／CIP1） IN THYROID CARCINOMA

Thethyroidcanceristhemostcommoncarci nomaintheendocrinicneoplasms.Thyroidcarcino ma,dependingonthepathologicaltype,hastwo thoroughlypolarizedcharacteristicsofprogression. Undifferentiatedcarcinomaischaracterizedbyex ceptionallyquickprogressionwithdirep…     

p53蛋白在慢性宫颈炎及宫颈癌中的表达

采用免疫组织化学ＳＰ法分别对５７例宫颈癌、８例慢性宫颈炎ｐ５３蛋白表达情况进行了检测,并以１１例正常宫颈鳞状上皮组织作对照。结果∶ｐ５３蛋白在宫颈癌、慢性宫颈炎中的表达率分别为７８．９％、３７．５％。正常对照均为阴性。ｐ５３蛋白的表达率在宫颈癌病理Ⅲ级中明显高于病理Ⅰ、Ⅱ级（Ｐ＜０．０５）;在溃疡型中的表达率明显低于菜花型、结节型（Ｐ＜０．０５）。提示∶ｐ５３蛋白在慢性宫颈炎中的表达与细胞增殖率升高有关;ｐ５３蛋白的表达率不仅与癌细胞的分化程度有关,而且与宫颈癌的大体分型有关。     

胃癌P_(53)蛋白和雌孕激素受体的表达及意义

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。     

THE DETECTION OF P53 GENE IN HUMAN CERVICAL CARCINOMA WITH AND WITHOUT HUMAN PAPILLOMAVIRUS INFECTION

ＴＨＥＤＥＴＥＣＴＩＯＮＯＦＰ５３ＧＥＮＥＩＮＨＵＭＡＮＣＥＲＶＩＣＡＬＣＡＲＣＩＮＯＭＡＷＩＴＨＡＮＤＷＩＴＨＯＵＴＨＵＭＡＮＰＡＰＩＬＬＯＭＡＶＩＲＵＳＩＮＦＥＣＴＩＯＮＳｕｎＹｉ（孙毅）；ＳｉＬｕｓｈｅｎｇ（司履生）ＳｕｎＹｉ；ＳｉＬｕｓｈｅｎ...     

IN SITU EXPRESSION OF THE CELL ADHESION MOLECULE IN GASTRIC CARCINOMA AND CHRONIC GASTRITIS

ＩＮＳＩＴＵＥＸＰＲＥＳＳＩＯＮＯＦＴＨＥＣＥＬＬＡＤＨＥＳＩＯＮＭＯＬＥＣＵＬＥＩＮＧＡＳＴＲＩＣＣＡＲＣＩＮＯＭＡＡＮＤＣＨＲＯＮＩＣＧＡＳＴＲＩＴＩＳＣｈｅｎＧａｏｐｉｎｇ（陈高平）；ＬｉｕＹｏｎｇ（刘勇）；ＲｅｎＨｕｉｍｉ（任惠民）；ＬｉＨｅ...     

Cadherin-Catenin复合体及p53蛋白表达与早期胃癌淋巴结转移的关系

运用单克隆抗Ｅ－ｃａｄ、ａ－ｃａｔ和ｐ５３蛋白抗体及免疫组化方法检测了６９例早期胃癌标本。结果显示,Ｅ－ｃａｄ及ａ－ｃａｔ表达减弱率分别为５３．６％和６５．２％,ｐ５３蛋白阳性率为２７．５％。Ｅ－ｃａｄ及ａ－ｃａｔ的表达显著相关,而ｐ５３的表达与Ｅ－ｃａｄ或α－ｃａｔ表达无关。粘膜下癌α－ｃａｔ减弱表达及ｐ５３蛋白阳性表达者淋巴结转移率较高;而α－ｃａｔ保留表达及ｐ５３蛋白阴性表达者无论是粘膜内或粘膜下癌,未见淋巴结转移。提示结合α－ｃａｔ及ｐ５３蛋白表达,可协助诊断早期胃癌淋巴结转移。     

THE QUANTITATIVE MEASUREMENT OF BCL-2, P53 PROTEIN AND PCNA EXPRESSION IN BREAST CARCINOMA AND THEIR CORRELATION WITH PROGNOSIS

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

THE EXPRESSION AND CLINICAL SIGNIFICANCE OF P21 (WAF1/CIP1)AND CYCLIN D1 PROTEIN IN COLORECTAL CARCINOMA

Studies on the carcinomas showed thattumori-genesis was critically related to the acceleration ofcell proliferation and disturbance of apoptosis.Ab-normal cell cycle might lead to uncontrolled cellproliferation and promote oncogenesis.P2 1 is awide- spectrum cyclin- dependent kinase inhibitorand negatively control cell cycle progression.Chen[1] 　 found thatover- expression of P2 1 can inhibittu-mor growth.Cyclin D1 is a regulatory protein thatcontrol cell cycle transit from G1 into S phase.…     

THE EXPRESSION OF BCL-2 AND BAX PROTEINS IN GASTRIC CARCINOMA AND PRECANCEROUS LESIONS

Gastric carcinoma is one of the most commonmalignant tumors in China,and great attention hasbeen paid to its carcinogenesis research. In recentyears, it has been found that oncogenes played agreat role in the occurrence and development ofgastric carcinoma. The expression of apoptosis--as-sociated oncogenes, bcl-2 and bax, in early-stagegastric carcinoma and precancerous lesions was ex-amined by us with immunohistochemical method toevaluate their role in the genesis of gastric carcino-ma.MATE…     

THE RELATIONSHIP OF p53 GENE MUTATION AND TUMORINVASION AND LYMPH NODE METASTASIS IN EARLY GASTRIC CANCER

Thehumanp53gene,locatedonchromosome17pl3,isanimportanttumorsuppressorgenewhosefunctionistopreventtumorigenesis.Recentstudiessuggestedthatp53genecanstartapoptosisofcellsincertaincircumstancestl).p53geneisconsideredtobeinvolvedincarcinogenesisofmanyorgans.Recently,concerningp53geneingastriccanceranditsrelationwithpathologyorprognosis,numbersofinvestigationshavebeenreportedandtheresultswerevarious(2'3).butfewstudiesconcerneditsrelationshipwithtumorinva.sionandlymphnodemetastasisinearlygastriccanc…     

胃癌中内分泌细胞及其意义

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。     

P_(53)蛋白和增殖细胞核抗原在肾癌中表达的临床意义

采用免疫组织化学方法检测40例肾癌组织中P53蛋白和增殖细胞核抗原（PC-NA）的表达。发现P53蛋白阳性表达者共10例（25％）。P53蛋白表达与肿瘤病理分级、临床分期及预后无相关性。肾癌组织的PCNA增殖指数随肿瘤病理分级的上升而增加，PC－NA高表达组（增殖指数＞10％）预后不良，特别是临床早期但PCNA高表达者预后也很差。结果提示P53蛋白表达在肾癌生物学行为及预后评估中无重要意义，而PCNA可作为肾癌恶性度及预后评估指标。P53蛋白和PCNA表达无相关性。     

抗凋亡基因bcl-2在早期胃癌和癌前病变中的表达

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     

THE OVEREXPRESSION OF APOPTOSIS -RELATED GENES OF P53 AND BCL-2 IN CERVICAL CARCINOMA

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…     

p16INK4/CDKN2在胆囊癌中的表达及临床意义

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。     

胃癌中EGFR和C-erbB-2基因表达的临床研究

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。     

p21WAF1/CIP1基因及p53蛋白在大肠癌的表达及意义

用免疫组织化学方法对 4 2例大肠癌组织 p2 1WAF1/ CIP1基因及 p53蛋白的表达进行检测。结果表明 :p2 1WAF1/ CIP1阳性率 4 2 .9% ,p53蛋白阳性率 6 4 .1% ;两者与大肠癌的组织分化、淋巴结转移及术后生存率之间有关 ,并随着肿瘤恶性程度的增加 ,p2 1WAF1/ CIP1阳性率下降 ,p53蛋白阳性率增加。推测 p2 1WAF1/ CIP1及 p53之间存在着一定的负性相关关系 ,同时检测 p2 1WAF1/CIP1基因及 p53蛋白的表达情况 ,有助于判断大肠癌的生物学行为及患者的预后。     

EXPRESSIONS OF P53, PROLIFERATING CELL NUCLEAR ANITIGEN, BCL-2 PROTEIN AND THEIR SIGNIFICANCE IN SALIVARY ADENOID CYSTIC CARCINOMA

Studiesonthecarcinomasshowedthatthespeedofcarcinomadevelopmentisdependentonthebalanceofcellproliferatingandapoptosis.Soitisveryimportanttostudythemechanismbywhichoncogenescontrolproliferationandapoptosisoftu-morcell.Moststudiesonsalivaryglandtumorshavelaidemphsisontheproliferatingfunctionofonco-genesathomeandabroad,andignoranteditsfunc-tiononapoptosis,especially,thestudieswerefew-.erincombiningtwokindsoffunction.Helen's[13studyonACCindicatedthatmutationofP,3doesn'tplayimportantroleincarcinog…     

THE EXPRESSION OF p16 AND CYCLIN D1 IN PROLIFERATIVE ENDOMETRIUM AND ENDOMETRIAL CARCINOMA

The development of malignanttumors is close-ly related to the abnormality of cell cycle regula-tion.Cyclin D1and p1 6are key factors that havepositive and negative effects on regulating cell cy-cle,respectively.In general,itwas considered thatthe over- expression of oncogene cyclin D1or/andinactivation of anti- oncogene p1 6contribute to themalignant transformation of cells.As has been re-viewed,the aberrant expression of cyclin D1or/andp1 6was involved in the development and progres-sion of …     

P~（53）蛋白在人脑星形胶质细胞瘤中的表达及意义

采用免疫组化法对５０例人脑星形胶质细胞瘤组织中Ｐ５３蛋白的表达，及其与肿瘤临床病理学特征和预后的关系作了分析，结果显示：本组５０例中２２例表达阳性，阳性率占４４％，Ｐ５３蛋白主要分布在细胞核内，正常脑组织Ｐ５３蛋白表达均为阴性，且肿瘤分化程度越差，预后不良者其阳性染色愈强烈，提示Ｐ５３基因及其蛋白与人脑星形胶质细胞瘤的发生、发展密切相关，可做为判定脑肿瘤恶性程度和预后的重要指标。