维吾尔族口腔鳞状细胞癌患者中血清鳞状细胞癌抗原的表达研究

目的 探讨维吾尔族口腔鳞状细胞癌(OSCC)患者血清中鳞状细胞癌抗原(SCC-Ag)的表达.方法 采用化学发光法检测90例维吾尔族OSCC患者(OSCC组)和90例维吾尔族其他口腔恶性肿瘤患者(口腔非OSCC恶性肿瘤组)、101例维吾尔族口腔良性肿瘤患者(良性肿瘤组)和120例维吾尔族正常对照者(正常组)的血清SCC-Ag水平,并对其中60例OSCC和60例口腔非OSCC恶性肿瘤患者治疗前后SCC-Ag水平进行检测,分析SCC-Ag在OSCC诊断、治疗疗效中的意义.结果 OSCC组的SCC-Ag水平明显高于口腔非OSCC恶性肿瘤组(P=0.002),良性肿瘤组(P=0.001)和正常组(P=0.001).OSCC患者血清SCC-Ag阳性率为43.3％(39/90),明显高于其他3组(P=0.000 1).OSCC患者TNM晚期的术前SCC-Ag水平的表达高于早期水平(P<0.05).复发组和未复发组的术前、术后、放化疗后SCC-Ag水平相比较,差异均有统计学意义(P＜0.05).手术及放化疗前后鳞状细胞癌患者血清SCC-Ag水平变化差异有统计学意义(P＜0.0 1),然而,在口腔非OSCC恶性肿瘤组治疗疗效差异无统计学意义(P>0.05).结论 血清SCC-Ag对维吾尔族OSCC患者的早期诊断敏感性不高,但在评价治疗疗效,预测肿瘤复发方面有重要的临床意义.     

唾液中唾液酸、癌胚抗原测定在口腔鳞癌诊断中的意义

目的 探讨唾液中癌胚抗原(CEA)和唾液酸(SA)含量在口腔颌面部鳞癌诊断中的意义。方法 分别采用酶联免疫吸附(ELLISA)法检测22例口腔鳞癌、22例口腔良性肿瘤患者、40例正常人的CEA和SA含量。结果 SA含量在正常人组与良性肿瘤组间、良性肿瘤与鳞癌组间差异无显著性(P>0.05);正常人组低于鳞癌组(P<0.01)。CEA含量在正常人组低于良性肿瘤和鳞癌组(P<0.01);在鳞癌和良性肿瘤组间差异无显著性(P>0.05)。结论 开展唾液CEA和SA的测定,对诊断颌面部鳞癌具有一定的参考价值。     

口腔颌面部恶性肿瘤患者血浆PT、APTT、TT及Fib检测

目的探讨口腔颌面部恶性肿瘤患者出、凝血功能变化,为临床诊疗提供有价值的检测指标。方法采用日本SysmexCA-50四通道自动血凝仪及DadeBehring公司生产的相应试剂和质控物,检测93例口腔颌面部恶性肿瘤患者血浆凝血酶原时间(PT)、活化部分凝血活酶时间(APTT)、凝血酶时间(TT)及纤维蛋白原(Fib),与健康对照组,口腔颌面部良性肿瘤组进行对比分析。结果口腔颌面部恶性肿瘤患者与健康对照组及口腔颌面部良性肿瘤组相比血浆APTT缩短,经统计学处理P<0.01;而血浆PT、TT和Fib3组之间无显著性变化,经统计学处理P>0.05。结论口腔颌面部恶性肿瘤患者血浆APTT缩短,而PT、TT和Fib无显著变化。     

口腔颌面部恶性肿瘤患者血清铁蛋白测定的临床意义

本文采用放射免疫分析法对75名正常人,30例口腔颌面部恶性肿瘤和26例良性肿瘤患者进行血清铁蛋白测定。结果表明,恶性肿瘤患者血清铁蛋白含量明显高于正常人和良性肿瘤患者(P<0.01),后二者无显著性差异(P>0.05)。指出血清铁蛋白测定对口腔颌面部癌有辅助诊断价值,对肿瘤复发,转移的监测和预后判断也可能有意义。但尚待进一步研究。     

口腔鳞状细胞癌患者血清TSGF、SCC-Ag、CEA的表达及其临床意义

目的　探讨联合检测血清中恶性肿瘤特异性生长因子(TSGF) 、鳞状细胞癌抗原(SCC-Ag)及癌胚抗原（CEA）在口腔鳞状细胞癌诊断中的价值。方法　采集58例口腔鳞状细胞癌患者、36例口腔良性肿瘤患者及30例健康人血液,分别检测血清中TSGF、SCC-Ag和CEA含量。结果　口腔鳞状细胞癌组TSGF、SCC-Ag、CEA含量明显高于口腔良性肿瘤组和健康组(P< 0.05)。口腔鳞状细胞癌组TSGF、SCC-Ag、CEA阳性率分别为74.14%、55.17%、24.14%,联合检测阳性率为86.21%。结论　血清TSGF、SCC-Ag、CEA分别检测对口腔鳞状细胞癌的诊断有一定意义,联合检测提高口腔鳞状细胞癌的诊断率。     

口腔颌面部肿瘤患者外周血淋巴细胞微核的检测

本文采用微量血培养法测定了43例口腔颌面部肿瘤及癌前病变患者外周血淋巴细胞微核,检出率为100%。口腔颌面部恶性肿瘤、癌前病变及良性肿瘤患者外周血淋巴细胞微核率分别为14.07±3.98‰、12±1.414‰和8.64±2.098‰,与对照组(5.95±1.91‰)比较有非常显著差异(P<0.005)。恶性肿瘤与良性肿瘤患者外周血微核率差异亦有高度显著性(P<0.005)。恶性肿瘤患者微核淋巴细胞的多微核淋巴细胞出现率在7.89%,明显高于良性肿瘤患者的2.48%和正常人的2.4%(P<0.05)。结果提示外周血淋巴细胞微核的检测可作为口腔颌面部癌肿辅助诊断和估计预后的指标;口腔颌面部肿瘤的发生与染色体畸变可能有密切的关系。     

TSGF在口腔颌面部肿瘤中的检测及其临床意义

目的　研究恶性肿瘤特异生长因子 (TumorSpecificGrowthFactor ,TSGF)在口腔颌面部肿瘤检测中的意义。方法　对 73例口腔颌面部肿瘤患者 (良性 37例 ,恶性 36例 )和 41例正常人血清进行了TSGF检测。结果　恶性肿瘤组TSGF水平高于正常对照组和良性肿瘤组 (P <0 .0 1)。在恶性肿瘤组中第三期TSGF值最高。恶性肿瘤组阳性率达到 77.78%。结论　血清TSGF检测对口腔颌面部肿瘤的诊断和预后判断有一定意义 ,可作为一种有价值的肿瘤标记物应用于临床     

口腔颌面部肿瘤患者T淋巴细胞核仁组成区嗜银蛋白的表达

目的　探讨口腔颌面部肿瘤患者外周血T淋巴细胞核仁组成区嗜银蛋白(Ag-NORs)的表达特点及其在口腔颌面部肿瘤诊断中的价值。方法　采用KL型肿瘤免疫图像分析系统及配套试剂,对86例正常人、102例口腔颌面部良性肿瘤和87例恶性肿瘤患者的外周血T淋巴细胞Ag-NORs进行检测,计算银染核仁面积与细胞核面积的比值(I.S%),然后进行综合分析。结果　口腔颌面部良性肿瘤组患者Ag-NORs表达与正常人组相比明显降低,良性肿瘤组平均I.S%值为(5·72±0·14),正常人组平均I.S%值为(7·87±0·12),两组间有显著性差异(P<0·01);恶性肿瘤组患者Ag-NORs表达降低更为明显,平均I·S%值为(4·19±0·13),与正常人组间有显著性差异(P<0·01);良性肿瘤患者组与恶性肿瘤组之间平均I.S%值也有显著性差异(P<0·01)。结论　外周血T淋巴细胞Ag-NORs表达与口腔颌面部肿瘤呈良好的相关性; Ag-NORs的检测可作为口腔颌面部肿瘤诊断及鉴别诊断的一项重要参考指标。     

血清SCC-Ag的变化对口腔鳞状细胞癌患者预后的影响

目的 研究血清鳞状细胞癌抗原(SCC-Ag)水平的变化对口腔鳞癌患者预后的影响。方法 采用ELISA检测了58例口腔鳞状细胞癌（鳞癌）患者手术前后血清SCC-Ag水平的改变。结果 术前及术后血清SCC-Ag值<1.5 μg/L的口腔鳞癌患者术后发生复发或转移发生率为15.6%和3.1%;术前和术后血清SCC-Ag水平>1.5 μg/L的口腔鳞癌患者术后发生复发或转移发生率为83.3%和95.5%;术前血清SCC-Ag水平>1.5 μg/L的口腔鳞癌患者术后血清SCC-Ag水平下降且SCC-Ag值<1.5 μg/L,其术后复发或转移发生率为25%。结论 血清SCC-Ag可能与口腔鳞癌的发生发展有关,其结果可作为判断患者病情的进展及肿瘤是否复发或转移。     

肥大细胞类胰蛋白酶（MCT）在口腔鳞癌患者血清中表达水平的研究

目的:通过对比检测口腔鳞癌患者、良性颌面部肿瘤患者及健康对照者血清中的肥大细胞类胰蛋白酶(MCT)的表达水平,分析其在口腔鳞癌患者血清的表达水平有无异常,并分析其潜在的临床意义。方法:收集63例口腔鳞癌患者、47例颌面良性肿瘤患者及55例健康对照者的血清,用ELISA试剂盒检测血清中MCT的表达水平,后分析口腔鳞癌患者血清中MCT水平的临床意义。结果:口腔鳞癌患者血清中的MCT的表达水平高于其它两组,但不具有显著的统计学差异(P=0.09),而在口腔鳞癌组,MCT的浓度水平与肿瘤的大小呈正性相关,此外,在中分化鳞癌中MCT的表达水平相对较高。结论:MCT作为肥大细胞聚集、活化的标记物之一,在口腔鳞癌患者血清的表达并未显著升高,而血清MCT的表达水平与肿瘤大小有关。     

Study of NK cell activity in patients with oral maxillofacial squamous cell carcinoma

NK cell activity of peripheral blood lymphocytes against K562 cell line were tested with 125IUdR release assay in 50 normal controls and 50 patients with oral maxillofacial benign tumors and 178 patients with oral maxillofacial squamous cell carcinoma. The data show NK cell activity of patients with primary squamous cell carcinoma is lower than that of normal controls and that of patients with benign tumors (P less than 0.001 and P less than 0.001). NK cell activity of patients with benign tumors is not different from that of normal controls (P greater than 0.05). NK cell activity of patients with II and III grade squamous cell carcinoma is lower than that of patients with I grade squamous cell carcinoma (P less than 0.01). Stage-related NK cell activity is not observed and there is no significant difference between patients with and without lymph-node metastasis. NK cell activity of patients with recurrent squamous cell carcinoma is not only lower than non-recurrent patients and normal controls (P less than 0.001) but also lower than primary squamous cell carcinoma patients (P less than 0.01). The non-recurrent patients have normal NK cell activity. The results indicate that the patients with oral maxillofacial squamous cell carcinoma have impairment of NK cell function. NK cell activity of the patients depresses within one week of operation and returns preoperative level two weeks after operation. Chemotherapy inhibits NK cell activity, which may not return two weeks after chemotherapy. These give reference to clinicians. NK cell activity may be a parameter in monitoring the immunofunction of oral maxillofacial malignant tumor patients.     

唾液SA、CEA测定在口腔鳞状细胞癌诊断中的意义

目的　通过对唾液中癌胚抗原 (CEA)和唾液酸 (SA)含量的测定和分析 ,探讨唾液中CEA和SA含量在口腔颌面部鳞状细胞癌诊断中的意义。方法　分别采用ELLISA法酶法 ,检测了 2 2例口腔鳞状细胞癌患者、2 2例口腔良性肿瘤患者、4 0例正常人唾液中的CEA和SA含量。结果　经过对测定数据进行统计学处理 ,SA含量在正常人组与良性肿瘤组对比 ,P >0 .0 5 ;正常人与鳞状细胞癌组对比 ,P <0 .0 1。良性肿瘤与鳞状细胞癌组对比 ,P >0 .0 5 ;CEA含量在正常人组与良性肿瘤和鳞状细胞癌组对比 ,P <0 .0 1,而鳞状细胞癌和良性组对比P >0 .0 5。结论　联合检测口腔颌面部鳞状细胞癌唾液CEA和SA含量明显高于正常人和良性肿瘤患者 ,口腔科临床开展唾液CEA和SA的测定 ,对诊断颌面部鳞状细胞癌具有一定的辅助作用     

微小RNA在口腔鳞癌中的潜在作用

口腔鳞癌是口腔颌面部常见的恶性肿瘤,微小RNA在OSCC的发生发展中起重要作用。本文就微小RNA与OSCC的侵袭转移、诊治及预后进行综述。     

Detection of serum Cyfra 21-1 in patients with primary oral squamous cell carcinoma

Oral squamous cell carcinoma (OSCC) is the most common malignant tumour in the oral and maxillofacial region, and has a poor prognosis. Cyfra 21-1 is a useful tumour marker for squamous cell carcinoma, but the clinical value of Cyfra 21-1 in OSCC has not been confirmed. In order to investigate the diagnostic and prognostic value of serum Cyfra 21-1 in primary OSCC patients, the preoperative serum Cyfra 21-1 concentration of 100 OSCC patients and 56 healthy subjects was detected by enzyme-linked immunosorbent assay (ELISA). The cut-off value was calculated with a receiver operating characteristic (ROC) curve, and prognostic analysis was performed using the Kaplan-Meier method and Cox regression models. The preoperative serum Cyfra 21-1 concentration in OSCC patients (1.18+/-1.20 microg/L) was significantly higher (t=6.585, P<0.001) than that in healthy subjects (0.40+/-0.16 microg/L). With a cut-off value of 0.65 microg/L, the diagnostic sensitivity and specificity was 0.570 and 0.964, respectively. There was significant correlation with tumour recurrence and survival rate: the higher the serum Cyfra 21-1; the higher the tumour recurrence rate and lower the survival rate. Serum Cyfra 21-1 was an independent prognostic factor for OSCC using univariate and multivariate Cox models.     

组蛋白修饰在口腔鳞状细胞癌中的研究进展

口腔鳞状细胞癌(oral squamous cell carcinoma, OSCC)是口腔颌面部最常见的恶性肿瘤,而OSCC患者就诊时往往疾病已发展到晚期阶段并出现肿瘤转移,导致预后不佳。OSCC的发病机制尚不清楚,目前早期有效监测OSCC发生、侵袭、转移及复发的分子靶点仍需要进一步探究。当前的研究显示,各种组蛋白修饰改变了染色质结构,进而影响相关下游基因的转录活性,调控基因表达水平,在OSCC的生物学检测、病理分级与分期、预后判断中均发挥重要作用。该文主要对组蛋白的甲基化、乙酰化、磷酸化、泛素化、二磷酸腺苷核糖基化等修饰在OSCC中的研究进展进行综述。     

口腔鳞癌中趋化因子受体CXCR4的临床病理及细胞学研究

目的检测CXCR4蛋白在口腔鳞状细胞癌（OSCC）组织和OSCC细胞系中的表达,探讨CXCR4蛋白的表达与OSCC临床病理及SDF-1/CXCR4轴与OSCC细胞增殖的关系.方法用免疫组织化学SP法检测91例OSCC中CXCR4的表达,用细胞培养、免疫组化法检测CXCR4蛋白的表达模式,流式细胞仪直接免疫荧光法测定CXCR4蛋白的表达量,MTT法检测细胞的增殖能力.结果CXCR4在OSCC组织中总阳性表达率为62.6%,与肿瘤的大小、病理分级、淋巴结转移、肿瘤增殖密切相关（P＜0.05）.CXCR4蛋白在OSCC细胞系中亦呈强阳性表达,OSCC细胞在SDF-l作用下增殖反应明显增强,CXCR4抗体可明显抑制肿瘤细胞的增殖.结论CXCR4与肿瘤的大小、病理分级、淋巴结转移及肿瘤增殖密切相关,对评估OSCC的生物学行为有意义.     

Use of monoclonal antibody 17.13 in the diagnosis of human oral squamous cell carcinoma

We assessed the ability of monoclonal antibody (MAb) 17.13 to react with human oral squamous cell carcinoma (OSCC) and other oral tissues. MAb 17.13 was reacted with acetone-fixed, serial frozen sections of 21 OSCC, 7 fibromas, 2 squamous papillomas, 1 melanosis and 3 normal oral mucosa, by means of an avidin-biotin-immunoperoxidase assay. Twenty-one of 21 tumors (100% sensitivity) reacted strongly with MAb 17.13, with a homogeneous staining pattern. Individual tumor cells could be clearly seen, improving the detection of microinvasion or borderline lesions. The epithelium of benign lesions and normal oral mucosa showed staining of the basal cells only. We conclude MAb 17.13 could be used as an accurate diagnostic tool for OSCC.     

The clinical significance of CDK1 expression in oral squamous cell carcinoma

Objectives: To evaluate the clinical significance of cyclin-dependent kinase 1 (CDK1) in 77 oral squamous cell carcinomas (OSCC) using immunohistochemical methods. Study Design: Immunohistochemical expression of CDK1 was compared with various clinicopathological features in 77 OSCC and 60 controlled epithelia adjacent to the tumours. In addition, correlation of CDK1 expression and prognostic and the 5-year accumulative survival rate of OSCC were investigated. Results: The CDK1 protein was expressed in 52 cases of 77 tumor tissues (67.5%), compared with 21 cases of 60 controlled (35.0%). The expression of CDK1 was significantly correlated with the histological grade of OSCC (P<0.05). The CDK1 protein was over-expressed in recurrent tumors or in those with lymph node metastasis. Statistical analysis showed a significant reduction in the 5-year accumulative survival rate in CDK1 positive cases compared with CDK1 negative cases (P<0.05). Namely, the CDK1 positive patients had poor prognosis. Conclusions: The expression of CDK1 might serve as malignant degree and prognostic markers for the survival of OSCC. Key words:Cyclin-dependent kinase 1 (CDK1), oral squamous cell carcinoma (OSCC), immunohistochemistry, cell proliferation.