Role of CD97stalk and CD55 as molecular markers for prognosis and therapy of gastric carcinoma patients

Objectives: To explore the mechanism of development and aggressiveness in gastric carcinomas by investigating the expression and role of CD97 and its cellular ligand CD55 in gastric carcinomas. Methods: Tumor and corresponding normal mucosal tissue, collected from 39 gastric carcinoma patients, were examined by immunohistochemistry and RT-PCR for the expression of CD97 and CD55. Results: CD97stalk was strongly stained on scattered tumor cells or small tumor cell clusters at the invasion front of gastric carcinomas. The expression of CD97stalk was frequently observed in tumors of stage Ⅰ and T1 gastric carcinoma patients. The expression of CD97stalk between Stage Ⅰ and Stage Ⅱ, Ⅲ, Ⅳ specimens showed significant difference (P＜0.05), between T1 and T2, T3, T4 specimens also showed significant difference (P＜0.05). Specimens with tumor invasion depth limited in mucosa of T 1 specimens showed higher positive CD55 expression than specimens with the same tumor invasion depth in T2, T3, T4 specimens, the expression of CD55 between T1 and T2, T3, T4 specimens was significantly different (P＜0.05).There was strong correlation between the distribution patterns of CD97stalk and CD55 on tumor tissues (r=0.73, P＜0.05). Signet ring cell carcinomas frequently contained strong CD97stalk and CD55-staining. Conclusions: Our results suggest that CD97stalk is probably involved in the growth, invasion and aggressiveness of gastric carcinomas by binding its cellular ligand CD55. CD97stalk and CD55 could be useful as molecular markers for prognosis and therapy of gastric carcinoma patients.     

MMP-9和CD15s与胃癌血管生成的相关性研究及其临床意义

目的:探讨基质金属蛋白酶9(MMP-9)和唾液酸化Lewis X(CD15s)抗原与胃癌侵袭转移的相关性。方法:采用CD105,MMP-9,CD15s进行免疫组化S-P法染色,对47例胃癌根治性切除手术标本病理组织切片进行标记,检测CD105的微血管密度(MVD),并对MVD与MMP-9、CD15s的关系进行统计分析。结果:MMP-9、CD15s表达都呈阳性的胃癌组织微血管密度高于MMP-9和CD15s单阳性及二者均阴性的胃癌组织。结论:MMP-9高表达有利于癌组织局部浸润,CD15s高表达有利于癌细胞血行转移,MMP-9及CD15s检测对临床诊治胃癌及判断预后具有一定意义。     

Role of CD97stalk and CD55 as molecular markers for prognosis and therapy of gastric carcinoma patients

Objectives: To explore the mechanism of development and aggressiveness in gastric carcinomas by investigating the expression and role of CD97 and its cellular ligand CD55 in gastric carcinomas. Methods: Tumor and corresponding normal mucosal tissue, collected from 39 gastric carcinoma patients, were examined by immunohistochemistry and RT-PCR for the expression of CD97 and CD55. Results: CD97^stalk was strongly stained on scattered tumor cells or small tumor cell clusters at the invasion front of gastric carcinomas. The expression of CD97^stalk was frequently observed in tumors of stage I and T1 gastric carcinoma patients. The expression of CD97^stalk between Stage I and Stage II, III, IV specimens showed significant difference (P<0.05), between T1 and T2, T3, T4 specimens also showed significant difference (P<0.05). Specimens with tumor invasion depth limited in mucosa of T1 specimens showed higher positive CD55 expression than specimens with the same tumor invasion depth in T2, T3, T4 specimens, the expression of CD55 between T1 and T2 T3, T4 specimens was significantly different (P<0.05). There was strong correlation between the distribution patterns of CD97^stalk and CD55 on tumor tissues (r=0.73,P<0.05). Signet ring cell carcinomas frequently contained strong CD97^stalk and CD55-staining. Conclusions: Our results suggest that CD97^stalk is probably involved in the growth, invasion and aggressiveness of gastric carcinomas by binding its cellular ligand CD55. CD97^stalk and CD55 could be useful as molecular markers for prognosis and therapy of gastric carcinoma patients. Project (No. 2004C34010) supported by the Science and Technology Bureau of Zhejiang Province, China     

CD44v6mRNA和HSP70mRNA在胃癌中的表达及研究

目的:检测CD44v6mRNA和HSP70mRNA在胃癌组织中的表达,探讨CD44v6mRNA和HSP70mRNA在胃癌发生发展中的作用.方法:利用核酸原位杂交技术对39例胃癌组织进行检测.结果:CD44v6mRNA和HSP70mRNA在胃癌组织表达的阳性率都为61.54%(24/39),CD44v6mRNA和HSP70mRNA在高分化管状腺癌与低分化管状腺癌中的表达都有显著性差异(P＜0.05),但HSP70mRNA在胃癌组织的表达与性别、年龄、浸润深度及淋巴结有无转移都无关(P＞0.05),而CD44v6mRNA与淋巴结有无转移有关(P＜0.05).结论:CD44v6mRNA和HSP70mRNA在胃癌组织都有较高的表达,两者均可作为评估胃癌预后的指标.     

肿瘤浸润淋巴细胞免疫组织化学研究

应用免疫组织化学PAP法,对26例常见恶性肿瘤冰冻组织切片中肿瘤浸润淋巴细胞(TIL)进行了原位分析,以了解TIL的组成及分布等原位特征。结果显示:(1)TIL中主要为CD_3~ 细胞,其中CD_4~ 相似文献   

胃癌患者血清中抗核抗体的检测

[目的]了解胃癌患者血清中抗核抗体谱的特点.[方法]以鸡卵核为抗原,应用免疫印迹法对18份胃癌术前患者以及22份正常对照组(年龄和性别分布均无差异)的血清进行分析.[结果]胃癌术前患者血清中特异识别5条抗原条带的抗核抗体的阳性率显著高于正常对照组,靶抗原的蛋白分子质量及胃癌术前组血清中特异识别这5条抗原条带的抗核抗体的阳性率分别为:69KD(44.4％,8/18),62KD(50％,9/18),58KD(33.9％,7/18),44KD(22.2％,4/18),37KD(38.9％,7/18).[结论] 胃癌患者体内存在抗核抗体,其相对的靶抗原有多种.     

慢性胃炎、异型增生和胃癌组织中bax、iNOS表达与幽门螺杆菌感染的关系

目的：探讨不同胃粘膜病变组织中bax基因蛋白、诱导型NO合酶（iNOS）的表达及其与幽门螺杆菌（HP）感染相关性。方法：选取我院2002～2004年102例胃粘膜组织标本及患者血清。其中慢性胃炎15例,异型增生22例,胃癌65例。应用免疫组化检测上述组织的bax、iNOS表达,应用组织切片革兰染色和酶联免疫法分别检测组织中的HP及血清HP抗体。结果：在慢性胃炎、异型增生、胃癌组织中HP的检出率分别为：7/15（46.7%）、15/22（68.2%）34/65（52.3%）。且上述各组中bax、iNOS的表达与HP感染存在正相关性。不同胃粘膜病变组织中,HP阳性组bax、iNOS阳性表达率显著高于HP阴性组。结论：bax、iNOS的表达与HP感染密切相关,HP可能通过NO的诱导及bax调控使细胞增值加速和凋亡异常而参与胃癌的发生、发展过程。     

肿瘤相关抗原CA15-3在胃癌组织中的表达及其意义

应用免疫组织化学SP法检测胃癌组织及同一患者相应正常胃粘膜组织中CA15-3的表达情况。结果显示:20例胃癌组织中阳性表达者15例,而正常胃粘膜均为阴性。这表明CA15-3的表达与胃癌之间存在明显的相关性,CA15-3阳性表达可能是胃癌变细胞的标志之一。CA15-3阳性表达及胞浆阳性定位与与胃癌进展,浸润深度,淋巴结转移无关,但与胃癌分化程度呈负相关。     

癌胚抗原和核仁组成区蛋白在胃活检良、恶性病变中表达

为探讨癌胚抗原(CEA)和核仁组成区蛋白(AgNOR)在胃粘膜活检中对良、恶性病变的诊断意义,我们取105例标本进行观察。结果表明:CEA和AgNOR计数在单纯性胃炎、肠上皮化生、异型增生和胃癌中表达有关系,其阳性率和计数依次增高。CEA、AgNOR表达有显著性差异。因此,CEA、AgNOR对癌和癌前病变的诊断和治疗具有一定参考意义。     

CD44smRNA在大肠癌中表达的研究

目的:探讨CD44smRNA在大肠癌细胞中表达的特点.方法:利用核酸原位杂交技术,对52例大肠癌组织进行检测.结果:CD44smRNA在大肠癌中总阳性率为65.38%(34/52)CD44smRNA表达与患者的性别、年龄及分化程度无相关性,而与有否淋巴结转移有一定的相关性.结论:CD44smRNA在大肠癌中有较高表达,可作为临床预测大肠癌转移潜能的一个重要参考指标.     

消化系恶性肿瘤浸润淋巴细胞免疫组化研究

应用免疫组织化学PAP法及多种单克隆抗体,对12例常见消化系统恶性肿瘤进行了原位研究。结果显示:①TIL在肿瘤局部主要分布于癌间质区,而癌实质区仅有极少数TIL浸润;②TIL中的主导细胞为CD_3~ T细胞,且无论在实质区还是在间质区CD_4~ 细胞均少于CD_8~ ,癌间质区CD_4~ /CD_8~ 比值大于癌实质区;③无论在癌实质区还是在癌间质区,均有部分CD_(25)~ 或HLA-DR~ TIL存在,对于这些变化的内在机制文中也作了探讨。     

肾癌肿瘤浸润淋巴细胞免疫组化分析及其与肾癌愈后关系研究

目的:了解肾细胞癌(RCC)患者抗瘤免疫状况及TIL与肾癌愈后关系。方法:应用免疫组织化学PAP法和单克隆抗体对肾细胞癌原位肿瘤浸润琳巴细胞的构成与分布及活化进行研究,检测的TIL主要表面表标志包括CD_3、CD_4、CD_8、CD_(25)和HLA-DR抗原。结果:(1)RCC患者肿瘤原位TIL以·OT细胞为主(CD_3 ),其中CD_8 细胞明显高于CD_4 细胞,其CD_4 /CD_8 比值与RCC临床分期成负相关。(2)在肿瘤原位,有部分表达活化标志CD_(25)或HLA-DR抗原T细胞存在。(3)RCC患者其TIL在瘤组织中呈弥散状分布。结论 肾癌TIL反映了肾癌患者局部抗瘤免疫状况,且与分期负相关,可做为肾癌愈后的客观检测指标。     

LAK细胞疫苗对大鼠佐剂关节炎淋巴细胞及其亚群的影响

目的：为进一步探索ＬＡＮ细胞疫苗在ＡＡ大鼠治疗中的作用．方法：近交系ＳＤ 大鼠以完全弗氏佐剂致炎形成佐剂关节炎（adjuvant arthritis,AA）．分离ＡＡ大鼠淋巴细 胞,经培养扩增后,采用已建立的肿瘤疫苗专利技术制成ＬＡＫ细胞疫苗．实验动物分别 于腋下注射ＬＡＫ细胞疫苗,每５日一次共３次．治疗前及治疗后一周分别采外周血测定 Ｔ细胞亚群,同时行外周血涂片和骨髓细胞学检查．结果：经ＬＡＫ细胞疫苗免疫后,ＡＡ 实验动物组外周血淋巴细胞百分率较对照组降低（Ｐ＜０.０１）,Ｔ细胞亚群ＣＤ８＋较对照组明 显上升（Ｐ＜０．０５）,ＣＤ４／ＣＤ８比值下降,两组差别具有显著性意义（Ｐ＜０．０５）。结论： ＬＡＫ细胞疫苗可有效地降低佐剂关节炎大鼠外周血淋巴细胞的数目并提高ＣＤ８＋Ｔ细胞 亚群的数量,在治疗自身免疫性疾病中可能是一种有用的手段,值得进一步研究．     

C-erbB-2基因蛋白在三种癌瘤组织中表达的分析

目的 :为探讨C -erbB - 2蛋白在胃癌、大肠癌和乳腺癌中表达的异同和意义。方法 :取胃癌 114例、大肠癌 10 4例和乳腺癌 10 6例 ,石蜡切片 ,SP免疫组织化学染色。结果 :C-erbB - 2在胃癌、大肠癌和乳腺癌中的阳性率分别为 71.9%、5 7.7%和 5 4 .7%。C -erbB - 2在胃癌和大肠癌中的表达与患者年龄有关 ;C -erbB - 2表达与大肠癌分化程度及乳癌恶性程度有关。结论 :C -erbB - 2高表达是大肠癌、乳癌恶性度高 ,预后不良的指标     

Prognostic significance of regulatory T lymphocytes in patients with hepatocellular carcinoma

We investigated the prognostic role of regulatory T cells (Tregs) in patients with hepatocellular carcinoma (HCC). Relevant evidence regarding prognostic significance of Tregs was systematically searched in MEDLINE and Embase databases. A meta-analysis was performed to compare survival in patients with high or low Tregs level (either in peripheral blood or tumor). Eighteen studies were identified that fulfilled for the eligibility criteria and were included for data synthesis. Our pooled hazard ratios (HRs) demonstrated that increased Tregs intratumoral accumulation was significantly associated with worse overall survival (HR=2.04, 95% confidence interval (CI): 1.72–2.42) and diseasefree survival (HR=1.82, 95% CI: 1.58–2.09). Three studies evaluated the role of Tregs in peripheral blood, and all of them showed that increased peripheral Tregs correlated with shortened disease-free and overall survival. Collectively, our results showed that the increased Tregs count is tightly associated with the shortened survivals. Its measurement in either primary tumor or even circulation might be a candidate marker of prognostic significance in HCC patients.     

HSP_(27)在消化道癌中的表达

目的:探讨HSP_(27)在消化道癌中的表达状况和意义。方法:收集食道癌、胃癌和大肠癌标本168例,用SP免疫组织化学方法染色。结果:HSP在食道癌、胃癌和大肠癌中的表达率分别为66.04％、37.04％和34.43％;在食道癌中高分化组阳性率(75％)明显高于低分化组(38.46％)。HSP表达与性别、年龄、癌侵润深度、淋巴有无转移的相关性不显著。结论:HSP在食道、胃、大肠癌中表达率依次下降,HSP表达率与癌分化程度有一定相关性。     

Correlation of matrix metalloproteinase-2, -9, tissue inhibitor-1 of matrix metalloproteinase and CD44 variant 6 in head and neck cancer metastasis

INTRODUCTIONHeadandneckcancersquamouscellcarci noma (HNSCC)isthefifthmostfrequentmalig nantneoplasmworld wide ;andischaracterizedbylocalinvasion ,disseminationtolocallymphnodeandfrequentrecurrenceattheprimarysiteoftumour.Despiteimprovementsindiagnosisandt…     

大肠癌组织中CD105和Ki-67的表达及其临床病理学意义

目的探讨大肠癌组织中CD105和Ki-67的表达及其意义。方法采用免疫组织化学PV-9000法检测50例大肠癌组织和10例正常大肠黏膜组织中CD105和Ki-67的表达,检测肿瘤内微血管密度（MVD）以及计算增殖指数（PI）。结果Ki-67和CD105在大肠癌组织中呈高表达（51．34±24．44,16．44±6．33）,与正常黏膜组织中的表达（21．10±8.66,4．00±1．25）相比较,差异有极显著的统计学意义（P〈0．01）。Ki-67的表达与大肠癌的分化程度、临床分期和淋巴结的转移有关,有显著统计学意义（P〈0．05）。MVD与大肠癌的分化程度、临床分期有关（P〈0．05）,但与淋巴结转移无关（P〉0．05）。Ki-67在大肠癌高微血管密度组的表达（68.28±16．91）明显高于低微血管密度组（30．59±13．90）,差异非常显著（P〈0．01）,Ki钾的表达与MYD呈正相关（r=0．28,P〈0.01））。结论CD105和Ki-67在大肠腺癌的发生发展中起着重要作用,并且同时检测两者的表达对大肠腺癌的抗血管治疗和判断其预后有一定应用价值。     

P_(53)、PCNA在胃粘膜中的表达及其与胃癌发生的关系

目的为探讨P_(53)、PCNA抗原在胃粘膜中的表达情况及其与胃癌发生的关系方法：应用LsAB免疫织化方法对80例胃粘膜进行了检测结果显了胃癌中P_(53)、PCNA强阳性表达率（80％、93．3％）明显高于异型增生（467％,53．3％）异型增生中P_(53)、PCNA强阳性表达率明显高于慢性萎缩性胃炎及慢性浅表性胃炎．结论研究结果表明,检测P_(53)、PCNA在肖粘膜中的不同表达,对胃癌发生机理的认识有重要意义．