口腔疣状癌与口腔鳞癌中PTTG1 mRNA表达的对比研究

目的：研究垂体肿瘤转化基因-1（Pituitary tumor transforming gene 1,PTTG1）在口腔疣状癌中的表达,并与口腔鳞癌（OSCC）作比较,探讨其在口腔疣状癌及OSCC中发生发展中的作用。方法采用逆转录多聚酶链反应（RT-PCR）技术分别检测口腔疣状癌和OSCC中PTTG1 mRNA相对含量,并取自身的癌旁黏膜和正常口腔黏膜作比较。结果：PTTG1在疣状癌和无淋巴结转移的高分化SCC的癌组织、正常黏膜和癌旁黏膜中均有不同程度的表达,但这种表达无显著差异（P〉0.05）;在有淋巴结转移的高分化SCC中,PTTG1的表达在癌组织和癌旁黏膜比正常黏膜有增高的趋势,中分化SCC中这种增高趋势更为明显,但统计学上均无显著意义（P〉0.05）。PTTG1在口腔疣状癌、无淋巴结转移的高分化SCC、有淋巴结转移的高分化SCC及中分化SCC四组癌组织中的表达呈现依次增加的趋势,其中口腔疣状癌的表达低于中分化SCC（P〈0.05）,而与高分化SCC无差别（P〉0.05）。结论：在口腔疣状癌,PTTG1的表达与高分化SCC一致,但低于中分化SCC,从总体上说明口腔疣状癌的生物学行为比中分化SCC好,而与高分化SCC一致;PTTG1与口腔疣状癌的发生可能无关,但可能参与了SCC的发生发展过程。     

口腔鳞癌中Maspin和VEGF基因的表达及意义

目的：研究乳腺丝氨酸蛋白酶抑制剂基因（marray serine proteinase inhibitor,Maspin）、血管内皮生长因子（vascular endothelial growth factor,VEGF）在口腔鳞癌中的表达及其相关性。方法：应用RT—PCR方法,分别对18例口腔鳞癌的癌组织、癌旁组织及相应正常组织标本行Maspin和VEGF mRNA含量的半定量测定,应用随机区组设计的F检验和Person直线相关分析进行统计分析。结果：Maspin mRNA在口腔鳞癌的癌组织、癌旁组织和正常组织中表达逐渐增加（P〈0．01）,且三者之间表达差异均有显著性（P〈0．05）;VEGF mRNA在癌组织、癌旁组织、正常组织中的表达依次降低（P〈0．01）,且癌组织和正常组织、癌组织和癌旁组织之间表达差异有显著性（P〈0．05）;口腔鳞癌中,Maspin和VEGF mRNA表达呈负相关（P〈0．01）;Maspin和VEGF基因mRNA表达与肿瘤淋巴结转移相关（P〈0．05）,与肿瘤的临床分期和病理分级无关。结论：Maspin基因在口腔鳞癌的发生发展过程中可能起着重要抑癌作用：Maspin可能通过下调VEGF来发挥抑癌作用。     

STK15基因在口腔疣状癌和鳞癌的表达研究

目的：研究丝氨酸／苏氨酸激酶15基因（Serine／Threonine kinase15,STK15）在口腔疣状癌和口腔鳞状细胞癌的表达,探讨其在疣状癌发生发展中的作用。方法：取20例口腔鳞状细胞癌和10例口腔疣状癌患者的肿瘤组织及其相应正常口腔黏膜组织标本,应用逆转录多聚酶链式反应（RT—PCR）方法检测上述标本STK15基因mRNA的相对含量。结果：口腔疣状癌组织STKl5基因mRNA的表达水平高于对应正常组织,其差异显著（t=2．333,P〈0．05）;口腔鳞癌组织STK15基因mRNA的表达水平高于对应正常组织,其差异显著（t=2．498,P〈0．05）;STK15基因mRNA在口腔疣状癌中的表达显著低于口腔鳞癌（t=2．199,P〈0．05）。结论：STK15基因可能在口腔疣状癌和口腔鳞癌的发生发展中起作用,STK15基因在疣状癌的发生发展过程中作用较在口腔鳞癌中小。     

表皮生长因子受体在口腔鳞癌中的表达

本文采用抗表皮生长因子受体（Ｅｐｉｄｅｒｍａｌ ｇｒｏｗｔｈ ｆａｃｔｏｒ （ＥＧＦ）ｒｅｃｅｐｔｏｒ）多克隆抗体对５８例口腔鳞癌标本进行了免疫组织化学染色，结果显示：鳞癌Ｉ组ＥＧＦ受体表达阳性率为２１．４％，鳞癌Ⅱ级阳性率为２６．７％，鳞癌Ⅲ级阳性率为４０％，随着鳞癌组织学分级的升高，ＥＧＦ受体表达有增高趋势，提示：ＥＧＦ受体表达与鳞癌组织学分级有一定关系。     

诱导型一氧化氮合酶表达在口腔癌前病变口腔鳞癌发展过程中的作用研究

目的　探讨诱导型一氧化氮合酶 (iNOS)在口腔癌前病变、口腔鳞癌发展过程中的表达情况及其作用。方法　采用免疫组化SABC法检测 10例正常口腔黏膜、8例上皮单纯增生、2 0例上皮异常增生和 3 2例鳞状细胞癌组织中iNOS的表达。结果　正常口腔黏膜iNOS阴性表达 ;上皮异常增生组和鳞癌组中iNOS的表达较上皮单纯增生组均显著增加 (P <0 .0 5 ) ;随着上皮异常增生程度的加重 ,iNOS的标记指数逐级显著上升 (P <0 .0 5 ) ;上皮异常增生组与鳞癌组之间以及鳞癌的各病理分级之间iNOS的表达均无显著性差异 (P >0 .0 5 )。结论　iNOS的表达可能参与了口腔鳞癌的衍进过程     

SHIP在口腔鳞癌中表达研究

目的 探讨含SH2结构域的肌醇磷酸酶（SHIP）在口腔鳞癌中的表达。方法 选择中国医科大学附属口腔医院口腔颌面外科2008—2011年间收治的36例口腔鳞癌患者,术后应用免疫组化方法对其癌旁正常组织、原发灶及转移淋巴结中SHIP、基质金属蛋白酶（MMP）-2及MMP-9的表达情况进行检测。结果 癌旁正常组织中SHIP呈中高强度阳性表达,明显高于原发灶及转移淋巴结（P < 0.05）;而原发灶及转移淋巴结中MMP-2和MMP-9表达强度显著高于癌旁正常组织（P < 0.01）。结论 SHIP基因可能通过负反馈作用来调节肿瘤的侵袭和转移。     

Livin基因及其蛋白在人口腔鳞癌中的表达

目的：探讨凋亡抑制蛋白（inhibitor of apoptosis protein,IAP）家族的新成员Livinct和Livinβ及其基因在人口腔鳞癌组织中的表达及意义。方法：采用反转录聚合酶链反应法（RT-PCR）检测20例口腔鳞癌组织、15例口腔软组织囊肿和10例癌旁正常口腔黏膜组织中LivinαmRNA和LivinβmRNA的表达．并用Western印迹检测2种Livin蛋白在3种组织中的表达情况,应用SPSS10．0软件包对结果进行统计学分析。结果：19例口腔鳞癌组织中均有Livina和LivinβmRNA的表达,14例口腔软组织囊肿和10例癌旁正常口腔黏膜组织中均可见Livina或LivinβmRNA的表达．3者表达率无统计学差异,但Livina和LivinβmRNA在口腔鳞癌组织中的表达显著高于口腔软组织囊肿和癌旁正常口腔黏膜组织（P〈0．01）,Western印迹检测结果和RT-PCR结果一致。结论：Livin可能在人口腔鳞癌的发生、发展中起着重要作用。     

口腔扁平苔藓及口腔鳞癌患者口腔黏膜组织中微小RNA-590表达研究

目的    研究口腔扁平苔藓（oral lichen planus,OLP）及口腔鳞癌（oral squamous carcinoma,OSCC）患者口腔黏膜组织中微小RNA-590（miR-590）的表达,探讨其在口腔黏膜细胞癌变中的作用及意义。方法    选择2014年3月至2015年12月间锦州市口腔医院收治且经病理学确诊的OLP患者32例（OLP组）和OSCC患者28例（OSCC组）,所有OLP患者均为初诊且经病理学确诊取材,OSCC患者均为术中病理确诊后开始取材。另选择20名健康志愿者作为对照组。采用实时荧光定量PCR技术检测3组受试者口腔黏膜组织中miR-590的表达水平并进行统计学分析。结果    OSCC组患者的miR-590相对表达水平（2.75 ± 0.78）最高,OLP组的相对表达水平（1.96 ± 0.52）次之,均显著高于对照组（0.77 ± 0.34）,差异有统计学意义（P < 0.05）。OSCC组与OLP组的miR-590表达差异有统计学意义（P < 0.05）。结论    与正常对照比较,miR-590的表达在OSCC和OLP组中显著升高,miR-590可能参与了口腔黏膜细胞癌变过程。     

口腔鳞癌组织中nm23—H1基因的mRNA表达及临床意义

目的 研究口腔鳞癌中ｎｍ２３－Ｈ１基因的ｍＲＮＡ表达情况及其与口腔鳞癌颈淋巴结转移的关系。方法 采用斑点杂交的方法检测８例口腔鳞癌,２例正常口腔粘膜中ｎｍ２３－Ｈ１基因的ｍＲＮＡ表达情况。结果 ２例正常口腔粘膜中ｎｍ２３－Ｈ１基因的ｍＲＮＡ表达水平均较高;４例手术时无颈淋巴结转移的口腔鳞癌组织中３例ｎｍ２３－Ｈ１ｍＲＮＡ呈相对高表达,１例表达水平较低;而伴有颈淋巴结转移的４例口腔鳞癌组织中ｎｍ２３     

TFAR19在口腔白斑和口腔鳞癌中表达的研究

目的研究凋亡相关基因tfar19在口腔正常黏膜、口腔白斑和口腔鳞癌组织中的表达及意义。方法采用免疫组织化学方法检测17例正常口腔黏膜、60例口腔白斑,30例口腔鳞癌组织标本中TFAR19蛋白的表达。结果①口腔正常黏膜组TFAR19染色阳性率为88.2%,白斑组TFAR19染色阳性率为63.3%,口腔鳞癌组TFAR19染色阳性率为30%,3组间染色阳性率分别有统计学差异(分别为P≤0.05)。应用Crosstabs相关性统计分析,TFAR19染色阳性率与组织病变恶性度显负相关(r=-0.997,P<0.05)。②口腔正常黏膜、口腔白斑和口腔鳞癌组织的TFAR19细胞染色强度指数分别为199.34±25.33、130.23±19.21,和59.44±13.83,各组间分别有显著性差异。结论tfar19基因在口腔黏膜上皮成癌过程中的确发挥着重要的作用,并且可以推测tfar19基因的表达缺失发生在肿瘤形成的早期。     

细胞角蛋白19mRNA在口腔鳞状细胞癌中表达的研究

目的探讨口腔鳞状细胞癌（OSCC）患者癌组织中细胞角蛋白（CK）19 mRNA的变化和其发生的可能机制以及CK19 mRNA检测的临床应用价值。方法收集未接受过放疗和化疗的20例OSCC患者的手术标本（包括癌组织20块、癌旁组织20块和颈清扫的淋巴结43枚）,采用荧光定量聚合酶链式反应（FQ-PCR）法检测组织内CK19 mRNA的表达,比较CK19 mRNA在上述组织中的相对表达量。结果CK19 mRNA在OSCC癌组织内表达比其在正常口腔黏膜内表达高1.85倍,比其在癌旁组织内表达高1.66倍。9例患者颈清扫淋巴结内CK19 mRNA表达阳性,阳性率为45%（9/20）,而9例患者的22枚淋巴结中CK19 mRNA表达阳性率是81.8%（18/22）,占20例患者43枚淋巴结的41.9%（18/43）。淋巴结CK19 mRNA阳性患者的癌组织与癌旁组织和正常口腔黏膜的表达量比CK19 mRNA阴性患者低。结论CK19 mRNA在OSCC癌组织中的表达高于其在癌旁组织和正常口腔黏膜内的表达,可能是由于癌组织中CK19的合成明显增加所致。淋巴结中CK19 mRNA的表达可以作为检测OSCC淋巴结微转移的指标之一,运用FQPCR法检测淋巴结中CK19 mRNA的表达来检测OSCC的淋巴结微转移比普通病理法检测更灵敏。     

细胞角蛋白17在口腔鳞癌中的表达

目的 研究细胞角蛋白17(CK17)在口腔鳞癌中的表达,以期为口腔鳞癌的诊断和预防提供依据.方法 分别采用实时定量聚合酶链反应、免疫印迹方法和免疫组化方法检测口腔黏膜上皮体外癌变模型、口腔鳞癌细胞株及30例原发口腔鳞癌标本中的CKl7 mRNA及蛋白质的表达.结果 与永生化HIOEC细胞相比,CK17 mRNA在HB5...     

Midkine expression in oral squamous cell carcinoma and leukoplakia

J Oral Pathol Med (2012) 41 : 21–26 Background: Midkine (MK), a 13‐kDa heparin‐binding growth factor, is overexpressed in various human cancers. However, its role in the development and progression of oral cavity squamous cell carcinoma (OCSCC) is still unclear. Thus, the aim of this study was to evaluate the expression of MK in samples of OCSCC, leukoplakia, and healthy oral mucosa (control). Methods: Surgically excised specimens from patients with primary OCSCC (n = 28) were immunostained for MK, Ki‐67, PCNA, p53, bcl‐2, Bax, and CD31. Besides this, MK expression was also investigated in leukoplakia and normal oral mucosa. The relationship of MK⁺ cells with clinical parameters (tumor location, tumor size, lymph node metastasis, and survival) and microscopic parameters (WHO histological grading, intensity of inflammation, proliferation index, apoptosis, and angiogenesis) was also evaluated. Results: The results showed that MK expression was increased in OCSCC in relation to leukoplakia and normal mucosa. Furthermore, MK expression was increased in late‐stage tumors (T3/T4) compared with early‐stage lesions (T1/T2). MK‐positive lesions also showed increased expression of the anti‐apoptotic protein bcl‐2. Conclusion: OCSCC, particularly late‐stage tumors, exhibits increased MK expression, which may be involved in tumor progression via upregulation of anti‐apoptotic genes, as shown by the augmented bcl‐2 positivity in MK‐positive tumors.     

GSTM1 enzyme concentration and enzyme activity in correlation to the genotype of detoxification enzymes in squamous cell carcinoma of the oral cavity

BACKGROUND: Differences in genotype and phenotype of detoxification genes could be one reason for conflicting results in studies dealing with gene polymorphisms as susceptibility factors for tobacco associated cancer. OBJECTIVES: The objective of this study was to investigate gene polymorphisms of detoxification enzymes and to determine whether the enzyme concentration and activity of glutathione S transferase microliter 1 correlates with the genotype in patients with cancer of the oral cavity. MATERIAL AND METHODS: In 73 cancer patients and 136 matched healthy controls, the polymorphisms of glutathione S-transferase mu1 and theta (GSTM/GSTT), cytochrome p450 1A1 and CYP2D6 were detected. Simultaneously, GSTM1 protein concentration and total GSTM1-activity were determined. RESULTS: Only the coincidence of GSTM1 and GSTT null genotype was associated with oral cavity cancer. GSTM1 protein concentration and enzyme activity in null-genotype patients was significantly lower than in GSTM1-allele-carrier. But the enzyme concentration did not correlate with the activity. CONCLUSION: We assume that detoxification enzymes are functionally redundant and that only the simultaneous deficiency of several detoxification enzymes increases the risk for oral cancer.     

表皮生长因子受体在口腔鳞状细胞癌中的表达及临床意义

目的：探讨表皮生长因子受体在口腔鳞状细胞癌中的表达及其与临床的关系，材料和方法，手术切除４０例口腔鳞状细胞癌组织标志，经用表皮生长因子受体单克隆抗体和免疫组织化学方法进行观察，分析其表达特点及临床表现，结果：表皮生长因子受体表达与患者的性别，年龄，发病部位，ＴＮＭ分期和淋巴细胞结转移无关（Ｐ〉０．０５）。高分化鳞状细胞癌的表达低于低分化（Ｐ〈０．０１），结论：表皮生长因子肥体表达状况与口腔鳞状细胞     

Immunohistochemical localization of c-myc oncogene product and EGF receptor in oral squamous cell carcinoma

Subcellular distribution of c-myc oncogene product and EGF receptor in oral squamous cell carcinomas was examined by using immunohistochemical method. Immunohistochemy for c-myc oncogene showed three staining patterns. Reactive products were demonstrable in the nucleus, in the perinuclear cytoplasm with granular appearance and in the entire cytoplasm. Concomitant stainings of each reactive pattern were observed. Occasionally, the reactive product was strongly deposited on the chromatin under mitotic phase. EGF receptor positive cases were found in only 4 of 28 cases. Though reactive products were usually found in the cytoplasm, the cell surface staining was detected in the only one case. In this case, cells under mitotic phase were strongly stained. The fact that the strong staining both of c-myc and EGF receptor in cells under mitotic phase suggested the close relation between the expression of these genes and the proliferation of carcinoma cells.     

口腔黏膜癌前病变及口腔鳞癌中bFGF的表达及意义

目的　探讨口腔黏膜癌前病变及口腔鳞癌的发生、发展过程中bFGF的表达及意义。方法　应用免疫组织化学方法对 10例正常口腔黏膜、2 7例口腔扁平苔藓、2 4例口腔白斑及 3 0例口腔鳞癌分别进行检测。结果　口腔鳞癌组织中bFGF高表达 ,明显高于正常口腔黏膜、口腔扁平苔藓和口腔白斑组织 (P <0 .0 5 ) ;口腔扁平苔藓和口腔白斑组织中bFGF表达高于正常口腔黏膜 (P <0 .0 5 )。结论　bFGF的过表达在口腔鳞癌的发生、发展过程中起着十分重要的作用 ,可以将其作为预测口腔黏膜恶变潜能的重要标志物     

The prevalence of oral leukoplakia in 138 patients with oral squamous cell carcinoma

OBJECTIVES: To determine the relationship between oral leukoplakia (OL) and oral squamous cell carcinoma (OSCC), and to evaluate possible differences between those carcinomas with and without associated leukoplakia. MATERIAL AND METHODS: A total of 138 patients were studied at the Stomatology Service of the University General Hospital, Valencia, Spain. These patients were divided into two groups: group 1, patients with oral cancer and leukoplakia, and group 2, patients with OSCC but with no associated premalignant lesions. The relationship between this precancerous lesion and the OSCC was evaluated, as well as the possible clinical and histological differences between the tumours of the two groups. RESULTS: Leukoplakia was detected in 27 (19.56%) patients with OSCC. No differences were found between the two groups regarding age and tumour location. However, statistically significant differences were observed with respect to the form, tumour stage and the presence of adenopathies in the cancers with and without leukoplakia; in that the tumours associated with leukoplakia were diagnosed as being at a more initial stage. CONCLUSIONS: Those patients with OL associated with oral cancer presented with tumours at a less advanced stage than those where no associated leukoplakia existed.