增殖细胞核抗原和Ki-67抗原在黏液表皮样癌中的表达

目的:检测细胞增殖核抗原(PCNA)和Ki-67抗原在黏液表皮样癌中的表达,探讨其表达量与粘液表皮样癌分级的相关性及意义。方法:对17例黏液表皮样癌的临床病理特点进行回顾性分析,采用SABC和LSAB免疫组化法分别检测PCNA和Ki-67在17例黏液表皮样癌的表达和分布。结果:17例黏液表皮样癌中,高分化型11例(其中1例转移)。低分化型6例(其中4例转移)。PCNA及Ki-67的增殖指数(PI值)在黏液表皮样癌中,低分化型明显高于高分化型(P<0.001)。在发生转移的黏液表皮样癌组中,PCNA及Ki-67的表达水平均明显高于无转移组。结论:黏液表皮样癌中PCNA和Ki-67的表达水平与细胞分化有关,其PI值可作为组织学分级的重要参数。PCNA和Ki-67的高表达预示着黏液表皮样癌预后的不良。     

癌基因c—erbB—2在涎腺肿瘤中的表达

作者利用抗c-erbB-2单克隆抗体,用免疫组化的方法,对50例涎腺肿瘤(腺癌,涎腺导管癌、粘液表皮样癌、腺样囊性癌、多形性腺瘤各10例)进行癌基因、c-erbB-2的检测。不同种类的涎腺肿瘤,其c-erbB-2的表达很不一致。腺癌及涎腺导管癌的阳性表达率较高,粘液表皮样癌及多形性腺瘤较低,腺样囊性癌为阴性。c-erbB-2的表达与肿瘤分化度有一定关联,涎腺肿瘤组织形态学的多样性,可能与c-erbB-2的表达不同有关。     

涎腺恶性多形性腺瘤的病理类型

本文报告73例涎腺恶性多形性腺瘤,根据光镜形态分为9个亚型,即腺癌型、鳞癌型、肌上皮癌、低分化癌、癌肉瘤、腺样囊性癌、粘液表皮样癌、多形性腺癌、转移性多形性腺瘤各型。对不同组织类型和多项恶性指标及随访预后的关系进行对比和讨论。     

涎腺肿瘤中Pax9基因的表达及其意义

目的:检测正常涎腺组织及涎腺肿瘤中转录因子Pax9的表达。方法:采用免疫组化SABC法,研究Pax9在正常涎腺组织、多形性腺瘤、腺淋巴瘤、基底细胞腺瘤、粘液表皮样癌和腺样囊性癌共48例中的表达情况。结果:除1例多形性腺瘤外,其余组织均表达Pax9。正常涎腺的腺泡细胞和导管内衬细胞、多形性腺瘤的上皮细胞、腺淋巴瘤的肿瘤上皮细胞和基底细胞腺瘤中Pax9弱阳性表达,差异没有显著性;而在增殖活跃的细胞如正常涎腺导管的基底细胞和恶性肿瘤细胞(粘液表皮样癌、腺样囊性癌)中表达增强,恶性肿瘤中Pax9的强阳性表达率明显增高,与正常和良性肿瘤相比具有显著差异(P<0.05)。结论:Pax9在涎腺肿瘤尤其是恶性肿瘤的发生过程中发挥重要的作用。     

涎腺疾病

腮腺肿瘤手术中冰冻活检的意义；腮腺多形性腺瘤113例临床分析；抑癌基因PTEN、p27及Ki-67在涎腺黏液表皮样癌中的表达；人涎腺腺样囊性癌神经侵袭动物模型的建立；内镜辅助诊断慢性阻塞性腮腺炎的临床应用；腮腺淋巴结炎继发化脓性腮腺炎的CT及声像图特点；微血管密度和涎腺腺样囊性癌远处转移及预后的关系；     

增殖细胞核抗原PCNA在涎腺肿瘤中的表达

采用抗增殖细胞核抗原(proliferating cell nueler antigen,PCNA)单克隆抗体PC10,对49例涎腺肿瘤标本进行免疫组化染色.结果显示:涎腺恶性肿瘤与正常涎腺组织和良性肿瘤间,高分化与低分化粘液表皮样癌间及腺样囊性癌实质型与筛孔型之间PCNA标记指数均存在显著差异.提示:PCNA表达对判断涎腺肿瘤的增殖活性有一定意义.     

涎腺正常与肿瘤组织中p63、CK5、CK19、CEA及SmA的表达

目的:探索涎腺正常导管、腺泡及其上皮性肿瘤的组织起源.方法:采用免疫组化(二步法)检测正常涎腺组织14 例、多形性腺瘤14 例、基底细胞腺瘤8 例、腺样囊性癌18 例、黏液表皮样癌9 例、低分化腺癌2 例及腺泡细胞癌、乳头状腺癌、恶性多形性腺瘤、肌上皮癌各1 例中p63、CK5、CK19、CEA及SmA的表达.结果:正常涎腺基底细胞与肌上皮细胞层表达CK5,其中部分细胞表达p63,导管部分基底细胞也呈CK19阳性.多形性腺瘤、基底细胞腺瘤、腺样囊性癌与黏液表皮样癌具p63、CK5及CK19高阳性率, SmA阳性率分别为85.71%、1.25%、61.11%、0.00%.CEA阳性细胞见于11.11%腺样囊性癌与55.56%黏液表皮样癌.结论:正常涎腺导管和腺泡的腺上皮及涎腺上皮性肿瘤可能来源于导管、腺泡基底层内呈p63和CK5阳性细胞中的干细胞.     

组织蛋白酶D在涎腺肿瘤中的表达

为探讨组织蛋白酶Ｄ在涎腺肿瘤中的表达及意义 ,我们对 10 8例涎腺肿瘤中组织蛋白酶Ｄ的表达进行了分析。材料与方法 :涎腺肿瘤标本 10 8例 ,其中粘液表皮样癌40例 ,腺样囊性癌 2 2例 ,腺癌 8例 ,乳头状腺癌 6例 ,肌上皮癌 5例 ,基底细胞腺癌、上皮肌上皮癌和腺泡细胞癌各 4例 ,导管癌 3例 ,恶性多形性腺瘤 2例 ,多形性低度恶性腺癌1例 ,基底细胞腺瘤 7例 ,肌上皮瘤、混合瘤各 1例。采用常规链亲和素三步法进行免疫组织化学染色。设阴性对照并根据染色范围和强度将其分为 (- )、( )、( )和 ( )4个级别。结果 :阳性染色见于涎腺肿瘤…     

涎腺肿瘤组织TN－CmRNA和CDgmRNA的表达及其意义

目的：探讨Tenascin-C（TN－C）mRNA和CD9mRNA在涎腺肿瘤的表达及其对涎腺肿瘤鉴别诊断的价值。方法：采用原位杂交技术检测10例正常涎腺组织、25例多形性腺瘤（PA）、25例腺样囊性癌（ACC）、20例黏液表皮样癌（MEC）、10例腺泡细胞癌（ACCa）中TN-CmRNA和CD9mRNA的表达。结果：TN-CmRNA在正常涎腺组织中呈阴性表达;CD9mRNA在正常涎腺组织中的阳性率为100％;TN-CmRNA、CD9mRNA在4种涎腺肿瘤中均有表达,TN-CmRNA在多形性腺瘤中的阳性表达率显著高于腺样囊性癌和黏液表皮样癌,差异具有统计学意义,而在多形性腺瘤与腺泡细胞癌中的表达差异无统计学意义。CD9mRNA在多形性腺瘤中的阳性表达率高于腺样囊性癌,差异有统计学意义,而在多形性腺瘤和黏液表皮样癌、腺泡细胞癌中的表达差异无统计学意义;在多形性腺瘤中TN-CmRNA和CD9mRNA的表达呈正相关,在腺样囊性癌、黏液表皮样癌和腺泡细胞癌中TN—CmRNA和CD9mRNA的表达无相关性。结论：TN-CmRNA和CD9mRNA与涎腺肿瘤的发生有一定相关性,对涎腺肿瘤之间的鉴别诊断有一定意义。     

小涎腺肿瘤的临床与诊断

作者分析1964～1984年诊治的小涎腺肿瘤224例,占所有涎腺肿瘤的23.3％。良性肿瘤50例(22.3％);多形性腺瘤48例(21.4％),单形性腺瘤2例(0.9％),恶性肿瘤174例(77.7％):腺样囊性癌107例(47.8％),腺癌27例(12％),未分化癌6例(2.6％),恶性混合瘤5例(2.2％),粘液表皮样癌28例(12.5％),腺泡细胞癌1例(0.5％)。肿瘤的组织学结构和定位有一定关系,多形性腺瘤:78％在软腭和口咽侧壁,20％在颊部。腺样囊性癌:78％在上颌牙槽突起和鼻副窦,其次在硬腭和舌根部。腺癌:20％在舌根,18％在颊部和牙槽突起。粘液表皮样癌:28％在舌根。     

PCNA, Ki-67 and p53 expressions in submandibular salivary gland tumours

Salivary gland tumours are uncommon with a broad heterogeneity. The most common benign tumour is the pleomorphic adenoma, whereas mucoepidermoid carcinoma and adenoid cystic carcinoma predominate among the malignancies. Most salivary gland tumours occur in the parotid, and consequently clinical and biological data are normally derived from this site. This work describes the expressions of PCNA, Ki-67 and p53 in 15 pleomorphic adenomas, 15 mucoepidermoid carcinomas and 15 adenoid cystic carcinomas of the submandibular gland. Our results showed that all pleomorphic adenomas were negative for p53 and Ki-67 with 66.6% being positive for PCNA. Conversely, p53 was positive in 53% of the mucoepidermoid carcinomas and in 20% of the adenoid cystic carcinomas. Ki-67 was expressed in 47.7% of the mucoepidermoid carcinomas and 40% of the adenoid cystic carcinomas. All malignant tumours were positive for PCNA. These results indicate that the proliferative rate analysed with PCNA and Ki-67 and the expression of p53 in pleomorphic adenoma and adenoid cystic carcinoma of the submandibular gland were similar to those described in the parotid and minor salivary glands. However, mucoepidermoid carcinomas showed higher expression of these markers than those of other salivary glands. This work is the first describing the expression of these immunohistochemical markers exclusively in submandibular salivary gland tumours.     

转化生长因子β1及Ki-67核抗原在涎腺黏液表皮样癌中的表达和意义

目的 研究转化生长因子β1(transforming growth factor-β1,TGF-β1)、Ki-67核抗原在涎腺黏液表皮样癌(mucoepidermoid carcinoma,MEC)中的表达和意义.方法 应用免疫组织化学SP法检测20例涎腺多形性腺瘤(pleomorphic adenoma,PA)、45例涎腺MEC(29例高分化、16例中低分化)组织中TGF-β1和Ki-67核抗原的表达.结果 涎腺MEC中TGF-β1(39/45)、Ki-67核抗原(43/45)的表达高于PA,差异有统计学意义(P＜0.05);TGF-β1在中低分化MEC中的表达(16/16)高于高分化MEC(23/29)及PA(12/20),差异有统计学意义(P＜0.05),而TGF-β1在高分化MEC(6/23)与PA(8/12)中的表达差异无统计学意义(P＞0.05);在MEC中Ki-67核抗原的表达随TGF-β1表达增强而上升(P＜0.05),二者呈显著正相关(r=0.55,＜0.001).结论 TGF-β1的高表达在涎腺MEC的分化及恶性增殖过程中可能起重要作用.

Abstract：

Objective To investigate the expression and significance of transforming growth factor-β1 (TGF-β1)and Ki-67 nuclear antigen in salivary gland mucoepidermoid carcinoma. Methods The expression of TGF-β1 and Ki-67 nuclear antigen in 20 cases of salivary gland pleomorphic adenoma and 45 cases of mucoepidermoid carcinoma were detected by the streptavidin-peroxidase immunohistochemical method. Results Expression of TGF-β1 (39/45) and Ki-67 nuclear antigen (43/45) in mucoepidermoid carcinoma was significantly higher than in pleomorphic adenoma ( P ＜ 0.05 ). TGF-β1 expression was significantly higher in moderately/poorly differentiated mucoepidermoid carcinoma ( 16/16 ) than that in well differentiated mucoepidermoid carcinoma (23/29) and pleomorphic adenoma (12/20) ( P ＜ 0.05 ), but not different between well differentiated mucoepidermoid carcinoma (6/23) and pleomorphic adenoma (8/12)(P ＞ 0.05 ). The expression of Ki-67 was increased with the increment of TGF-β1 expression in mucoepidermoid carcinoma (P ＜ 0.05 ). Conclusions The high expression of TGF-β1 may play an important role in cell differentiation and malignant proliferation of mucoepidermoid carcinoma.     

抑癌基因PTEN在涎腺癌组织中的表达

目的:研究PTEN在正常涎腺组织及涎腺癌中的表达及意义。方法:应用免疫组化S鄄P法分别检测8例正常涎腺组织,24例粘液表皮样癌,26例腺样囊性癌中PTEN蛋白的表达。结果:PTEN蛋白在正常涎腺组织及涎腺癌中表达率分别为87.5%、22%,差异有显著性意义(P﹤0.05)。PTEN在高、中分化组粘液表皮样癌高表达率为35.3%,低分化组为28.5%,差异无显著性意义(P>0.05)。腺样囊性癌中PTEN蛋白表达率低于粘液表皮样癌,差异有显著性意义(P﹤0.05)。结论:提示PTEN蛋白与涎腺癌的发生、发展密切相关,PTEN蛋白表达与涎腺癌组织类型有相关性,而与组织学分级无明显相关性。     

涎腺粘液表皮样癌中Caveolin-1、PCNA的表达及意义

目的：研究Caveolin-1、增殖细胞核抗原（proliferating cell nuclear antigen,PCNA）在涎腺粘液表皮样癌中的表达,分析二者的关系及其与肿瘤生物学行为间的关系。方法：采用SP免疫组化技术检测75例涎腺粘液表皮样癌标本及20例正常涎腺组织中Caveolin-1、PCNA的表达,并行统计学分析。结果：Caveolin-1在20例正常涎腺组织中均呈阳性表达。Caveolin--1表达下调与病程短、病理级别及临床分期的增高有关,短病程组和长病程组间（42．1％VS67．6％）、低分化和高分化组问（38．5％VS63．3％）、Ⅲ＋IV期和I＋Ⅱ期组间（33．3％VS64．7％）比较差异有统计学意义（P〈O．05）。PCNA随着病理级别和临床分期的增高阳性表达率升高,低分化和高分化组间（33．38土11．98VS20．12士10．13）、HI＋IV期和I＋Ⅱ期组间（29．45土12．89VS22．49士11．73）比较差异有统计学意义（P〈O．05）。Caveolin--1与PCNA的表达呈负相关（rs－0．28,P－0．017）。Caveolin--1表达降低及PCNA表达增高与肿瘤复发显著相关（P〈O．05）。结论：Caveolin-1的表达对粘液表皮样癌细胞增殖起抑制作用,Caveolin--1是影响粘液表皮样癌发生发展的重要因素之一。     

Expression of PLUNC family members in benign and malignant salivary gland tumours

Objectives: The aim of this study was to determine the expression of PLUNC proteins in benign and malignant salivary gland tumours and thus their potential use as diagnostic and / or prognostic tools. Materials and methods: A tissue microarray was assembled from 64 salivary gland tumours including adenoid cystic carcinoma, carcinoma ex‐pleomorphic adenoma, mucoepidermoid carcinoma, polymorphous low‐grade adenocarcinoma, pleomorphic adenoma, acinic cell carcinoma, myoepithelial carcinoma and papillary cystadenocarcinoma. Clinicopathological data were collected retrospectively and immunohistochemical analysis of three PLUNC proteins (SPLUNC1, SPLUNC2 and LPLUNC1) was performed. Immunoreactivity was assessed as positive or negative. Results: PLUNC expression was only found in mucoepidermoid carcinomas and papillary cystadenocarcinoma; all other tumours studied were negative. Mucin plugs, mucous and intermediate cells of mucoepidermoid carcinomas were positive for LPLUNC1 and SPLUNC2, but areas composed of epidermoid and clear cells were negative for all PLUNCs. Papillary cystadenocarcinoma was positive for all PLUNCs. No correlation was found with tumour grade or outcome. Conclusions: Intense expression of two PLUNC proteins in mucous cells and mucin plugs of mucoepidermoid carcinoma and papillary cystadenocarcinoma indicate that they could be used as additional diagnostic tools in some equivocal cases, but further studies are needed to understand the biological processes involved in PLUNC expression.     

P53 and Ki-67 antigen expression in small oral biopsy specimens of salivary gland tumors

OBJECTIVE: To investigate the possibility that various salivary gland tumors that look histologically similar could express p53 oncoprotein and Ki-67 proliferation antigen differentially and possibly aid in distinguishing benign from malignant lesions.Study Design: Intraoral paraffin-embedded biopsy specimens of salivary gland tumors were used. Thirty-eight pleomorphic adenomas, 17 adenoid cystic carcinomas, 23 monomorphic adenomas, and 17 polymorphous low-grade adenocarcinomas were stained with p53 and Ki-67 antibodies by using an immunoperoxidase detection system. Each case was evaluated in terms of staining intensity and percentage of cells staining. RESULTS: Ki-67 and p53 antigens are expressed in generally low levels in the histologically well-differentiated salivary tumors that were studied here, both benign and malignant. Only 1 solid-type adenoid cystic carcinoma showed a high percentage of cells expressing p53. CONCLUSIONS: The histologically well-differentiated salivary tumors studied do not show differential expression of p53 and Ki-67, in spite of their differing courses of biologic behavior. These antibodies should not be relied on to distinguish benign from malignant lesions of the salivary glands; however, they might be markers for those lesions that are dedifferentiating histologically and, therefore, might be displaying more aggressive behavior.     

2489例涎腺上皮性肿瘤临床病理分析

目的:了解涎腺上皮性肿瘤的临床病理特点。方法:对2489例涎腺上皮性肿瘤临床病理资料进行统计分析。结果:涎腺恶性上皮性肿瘤840例,腺样囊性癌、黏液表皮样癌、癌在多形性腺瘤中居其前3位;涎腺良性上皮性肿瘤1649例,多形性腺瘤、Warthin瘤、基底细胞腺瘤居其前3位。涎腺恶性、良性上皮性肿瘤男女之比为1.13∶1和0.99∶1;平均发病年龄47.86岁和44.86岁;腮腺和腭部为好发部位。结论:腺样囊性癌和多形性腺瘤是最常见的涎腺恶性、良性上皮性肿瘤。