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1.
目的研究口腔疣状癌与口腔鳞癌组织基因的差异表达,探讨口腔疣状癌(oral Verrucous carcinoma,OVC)与口腔鳞癌(oral squamous cell carcinoma,OSCC)的基因学基础。方法应用cDNA芯片技术对4例OVC和4例OSCC组织mRNA检测,通过芯片杂交、生物信息学处理,找出两者间差异表达基因。结果BioStarH-40芯片发现差异表达基因593条,差异表达基因占15.2%,其中表达增强283条(显著增强59条),表达降低310条(显著降低98条)。结论OVC与OSCC基因表达比较,差异有统计学意义,这些差异可能在各自不同的生物学行为中起重要作用。  相似文献   

2.
目的检测Ezrin在口腔鳞状细胞癌(OSCC)、癌旁组织和口腔正常组织中的表达,探讨其在OSCC的发生发展过程中的作用及其与肿瘤淋巴结转移的关系。方法采用免疫组织化学方法检测未接受放疗和化疗的OSCC患者的手术切除标本50例、癌旁组织标本15例及口腔正常组织标本15例,用鼠抗人Ezrin单克隆抗体以及SP超敏试剂盒进行染色,采用半定量积分法判断结果,进行统计学分析,得出结论。结果 1)在口腔正常组织、癌旁组织和OSCC中,Ezrin表达分别为26.67%、53.34%、78.00%,其差异具有统计学意义(P<0.05)。2)Ezrin在口腔正常组织、癌旁组织和OSCC中表达逐渐增高,其在癌旁组织和正常组织、OSCC和癌旁组织、OSCC和正常组织之间的表达差异具有统计学意义(P<0.05)。3)Ezrin的表达与肿瘤淋巴结转移相关(P<0.05),与细胞分化程度无关(P>0.05)。结论 1)Ezrin在OSCC的发生发展过程中可能起着重要作用。2)检测OSCC组织中Ezrin的表达水平可能有助于对OSCC是否具有淋巴结转移潜能进行预测。3)OSCC中Ezrin的表达与肿瘤淋巴结转移有关、与组织病理学分级无关。  相似文献   

3.
目的 探讨Maspin蛋白在口腔鳞状细胞癌(OSCC)发生发展过程中的作用,为临床应用提供理论依据.方法 采用鼠抗人Maspin单克隆抗体及SP免疫组化法检测45例OSCC、33例癌旁组织及15例正常口腔组织中Maspin蛋白的表达水平,用半定量积分法判断结果.结果 在正常口腔组织、癌旁组织和OSCC组织中Maspin蛋白表达阳性率分别为86.67%(13/15)、72.73%(24/33)和37.78%(17/45).Maspin蛋白在OSCC组织、癌旁组织和正常口腔组织中表达逐渐增高,其中OSCC组织和正常口腔组织、OSCC组织和癌旁组织、癌旁组织和正常口腔组织之间表达差异有统计学意义(P<0.05).Maspin蛋白的表达与OSCC淋巴结转移和组织学分级有关(P<0.05),与TNM分期无关(P>0.05).结论 Maspin蛋白在OSCC的发生发展过程中可能起着重要作用,检测OSCC组织中Maspin蛋白的表达水平可能有助于对淋巴结转移潜能的预测.  相似文献   

4.
目的 通过检测口腔鳞状细胞癌(OSCC)组织中全长型脾酪氨酸激酶[SYK(L)]的表达、与淋巴结转移的相关性分析,探讨SYK(L)对OSCC发生发展和转移的影响。方法 采用实时荧光定量聚合酶链反应(RT-qPCR)、免疫印迹(Western blot)、免疫组织化学法检测SYK(L)在27例OSCC及其癌旁组织中表达的差异,并采用14例正常口腔黏膜作为对照,探讨其与OSCC发生及转移的关系。结果 OSCC组织中SYK(L)表达量明显低于正常牙龈组织(P<0.01),同一患者癌组织中SYK(L)表达量比癌旁组织低(P<0.05);淋巴结转移组患者的SYK(L)表达量普遍低于未转移组患者(P<0.05)。结论 SYK(L)可能与OSCC的发生和发展有关,作为抑癌基因在肿瘤的淋巴结转移过程中起至关重要的作用。  相似文献   

5.
目的探讨Maspin蛋白在口腔鳞状细胞癌(OSCC)发生发展过程中的作用,为临床应用提供理论依据。方法采用鼠抗人Maspin单克隆抗体及SP免疫组化法检测45例OSCC、33例癌旁组织及15例正常口腔组织中Maspin蛋白的表达水平,用半定量积分法判断结果。结果在正常口腔组织、癌旁组织和OSCC组织中Maspin蛋白表达阳性率分别为86.67%(13/15)、72.73%(24/33)和37.78%(17/45)。Maspin蛋白在OSCC组织、癌旁组织和正常口腔组织中表达逐渐增高,其中OSCC组织和正常口腔组织、OSCC组织和癌旁组织、癌旁组织和正常口腔组织之间表达差异有统计学意义(P<0.05)。Maspin蛋白的表达与OSCC淋巴结转移和组织学分级有关(P<0.05),与TNM分期无关(P>0.05)。结论Maspin蛋白在OSCC的发生发展过程中可能起着重要作用,检测OSCC组织中Maspin蛋白的表达水平可能有助于对淋巴结转移潜能的预测。  相似文献   

6.
目的: 研究口腔疣状癌(OVC)及口腔鳞状细胞癌(OSCC)中肿瘤坏死因子α诱导蛋白6(TNFAIP6)的表达其与临床病理的关系。方法: 在TCGA数据库中下载OSCC的RNA-seq数据,采用两样本t检验比较TNFAIP6在OSCC和正常口腔黏膜中的表达差异,采用受试者工作曲线(ROC)和生存曲线分别评价其诊断和预后价值。取15例正常口腔黏膜、22例OVC和24例OSCC及对应癌旁组织,利用免疫组织化学方法检测上述标本中TNFAIP6的表达和分布,并分析其阳性表达率与临床病理因素的关系。取5例OSCC、3例OVC及对应癌旁组织,利用反转录聚合酶链反应、免疫印迹技术验证其转录及蛋白表达水平,使用Graph Pad Prism 7.0软件进行计量数据分析,采用SPSS 21.0软件包对各组间数据进行两样本均数t检验。结果: 在TCGA数据库中,TNFAIP6在OSCC中表达显著上调且具有一定的诊断价值,然而其表达失调与OSCC患者总体生存率无关。在OSCC石蜡标本中,TNFAIP6表达显著上调,与饮酒、颈淋巴结转移、临床分期有关。在OVC石蜡标本中,TNFAIP6表达显著上调;TNFAIP6在OSCC癌组织的转录及蛋白表达显著上调。结论: TNFAIP6在OSCC组织中异常高表达,并与诊断及预后相关,可作为肿瘤分子标志物。  相似文献   

7.
目的研究头颈部丝氨酸蛋白酶抑制剂基因(Headpin)、血管内皮生长因子(VEGF)在口腔疣状癌中的表达及其相关性。方法应用反转录(RT-PCR)方法分别对6例口腔疣状癌和18例口腔鳞癌的癌组织、癌旁组织及相应正常组织标本行Headpin和VEGF mRNA含量测定。结果Headpin mRNA在口腔疣状癌的癌组织、癌旁组织和正常组织中的表达逐渐增加(P<0.01),但癌组织与癌旁组织、癌旁组织与正常组织之间差异无显著性(P>0.05);Headpin mRNA在口腔鳞癌的癌组织、癌旁组织和正常组织三者中表达逐渐增加(P<0.01),且癌组织与正常组织、癌旁组织与正常组织之间差异有显著性(P<0.05);疣状癌和鳞癌中Headpin基因表达水平差异无显著性(P>0.05);疣状癌中Headpin和VEGF mRNA表达呈负相关(P<0.05)。结论Headpin基因在口腔疣状癌的发生发展过程中可能起重要的抑癌作用;Headpin可能通过下调VEGF发挥抑癌作用。  相似文献   

8.
目的了解口腔鳞状细胞癌(OSCC)组织和癌旁组织中幽门螺杆菌(Hp)的感染情况。探讨Hp与OSCC发生、发展的相关性。 方法采用实时荧光定量聚合酶链反应(PCR)检测37例OSCC患者的癌组织和癌旁组织和32例正常口腔黏膜组织中的Hp核酸,并对实时荧光定量PCR阳性产物进行DNA测序分析。 结果37例OSCC患者的癌组织和癌旁组织中Hp核酸阳性9例(24.32%),正常口腔黏膜组织均为阴性,两者差异有统计学意义(χ2= 6.935,P= 0.008)。在9例Hp核酸阳性的OSCC患者样本中,有8例癌旁组织检出Hp核酸,2例癌组织检出Hp核酸,差异有统计学意义(P= 0.015)。 结论部分OSCC组织和癌旁组织存在Hp感染,是否与OSCC的发生、发展存在相关性需进一步研究。  相似文献   

9.
目的:探究铁死亡相关基因在口腔鳞状细胞癌(OSCC)发生发展中的作用,初步确定潜在生物标志物.方法:从癌症基因组图谱数据库(TCGA)中下载头颈部鳞状细胞癌相关临床数据并筛选得到OSCC相关数据.利用R软件筛选差异表达的铁死亡相关基因并对差异表达基因进行GO和KEGG富集分析.利用STRING数据库构建蛋白质相互作用网络并利用R软件筛选关键基因.对关键基因进行Kaplan-Meier生存曲线绘制和Cox回归分析.结果:共筛选出44个铁死亡相关差异表达基因,进一步分析发现9个关键基因,其中IFNG和EGFR在OSCC组织中的表达水平与生存率显著相关(P<0.05).结论:铁死亡相关基因IFNG和EGFR可作为口腔鳞状细胞癌患者预后潜在的标志物.  相似文献   

10.
目的:探讨CASZ1在口腔鳞状细胞癌(OSCC)中的表达及临床意义.方法:通过TCGA数据库探讨CASZ1 mRNA在OSCC中的表达情况,采用免疫组织化学方法检测OSCC组织及癌旁组织中CASZ1蛋白表达水平并分析CASZ1蛋白的表达与OSCC患者临床病理特征以及预后的关系.结果:TCGA数据库结果显示,CASZ1 ...  相似文献   

11.
Odontogenic tumors constitute a very diverse group of lesions that reflects the complex processes of odontogenesis. Controversies over their classification/subtyping, terminology and diagnosis have been persisted, which has direct bearings on therapeutic and/or prognostic implications.  相似文献   

12.
This review focuses on the capacity of the brain for plasticity and the utility and efficacy of oral implants in helping to restore oro‐facial sensorimotor functions, especially in elderly patients. The review first outlines the components of the oro‐facial sensorimotor system which encompasses both oro‐facial tissues and a number of brain regions. One such region is the sensorimotor cortex that controls the activity of the numerous oro‐facial skeletal muscles. These muscles are involved in a number of functions including reflexes and the more complex sensorimotor functions of mastication, swallowing and speech. The review outlines the use by the brain of sensory inputs from oro‐facial receptors in order to provide for exquisite sensorimotor control of the activity of the oro‐facial muscles. It highlights the role in this sensorimotor control played by periodontal mechanoreceptors and their sensory inputs to the brain, and how oral implants in concert with the plastic capacity of the brain may, at least in part, compensate for reduced sensorimotor functioning when teeth are lost. It outlines findings of ageing‐related decrements in oro‐facial sensorimotor functions and control. The changes in oro‐facial tissues and the brain that underlie these ageing‐related functional alterations are also considered, along with adaptive and compensatory processes that utilise the brain's capacity for plasticity. The review also notes the evidence t hat rehabilitation that incorporates adjunctive approaches such as sensorimotor training paradigms in addition to oral prostheses such as implants may enhance these processes and help maintain or facilitate recovery of sensorimotor functioning in the elderly.  相似文献   

13.
Squamous cell carcinoma of the head and neck (SCCHN), which arises from the squamous mucosal epithelium of the oral cavity, pharynx and larynx, is a major health problem in the US and other parts of the world, especially in developing countries.  相似文献   

14.
目的:评价牙槽骨再生正畸治疗伴牙槽骨缺损的成人错畸形的远期疗效。方法伴牙槽骨缺损的成人错畸形3例,平均年龄29岁。经正颌-正畸联合会诊制订治疗计划,按照牙槽骨再生正畸及正颌-正畸联合治疗模式,分别进行系统治疗并随访2~3 a。结果3例患者均顺利完成治疗,面型及咬合关系获得良好改善;牙槽骨缺损区正畸牙移动到位且未见医源性牙周并发症,牙槽骨缺损区骨量增加明显且远期效果稳定。结论针对伴牙槽骨缺损的成人患者,牙槽骨再生正畸是一种较为理想的技术。  相似文献   

15.
16.
《Orthopaedics and Trauma》2023,37(2):125-133
Flexor tendon injuries to the hand and wrist represent a significant resource burden to the UK NHS. A good understanding of tendon basic science and repair techniques is crucial for the surgeon undertaking their repair and rehabilitation. Furthermore, this is a common topic assessed in the FRCS(Orth) examination. This article will summarize the basic science relating to tendon structure, physiology and injury. Additionally, it will present key surgical and rehabilitation factors relevant to clinical outcomes.  相似文献   

17.
目的:探讨采用引流助萌的方法对伴囊肿的上颌埋伏阻生中切牙的早期治疗。方法:选取单侧上颌中切牙埋伏阻生、处于替牙早期伴囊肿的患者8例。外科囊肿切除同时对埋伏阻生上颌中切牙引流助萌治疗。治疗前后拍摄CBCT,Dolphin11.0软件测量矫治前后阻生牙及对侧正常同名牙的冠根长度。结果:8例患者的埋伏阻生上颌中切牙平均矫治时间6.7个月。矫治后阻生牙和对侧正常同名牙的冠根长度均有生长。阻生牙冠根长度较对侧正常同名牙明显短(P<0.05)。结论:本研究所采用引流助萌方法为埋伏阻生牙的矫治提供了一个安全、有效的新途径。  相似文献   

18.
OBJECTIVES: To calibrate and validate a digital subtraction radiography system using scanned images for quantification of alveolar bone changes by means of computer-assisted densitometric image analysis (CADIA) in vitro. MATERIALS AND METHODS: Noise levels were determined using 10 standardized periapical radiographs of the same lower molar region in a human dry skull. For validation of the system, radiographs were taken before and after bovine bone particles in measures with increments of 2 mg weighing from 2 to 20 mg were added into each socket of three dry skulls. Radiographs were developed and scanned into a computer with a flatbed scanner. After digitization, the images were subjected to alignment, normalization and subtraction. Appropriate regions of interest (ROIs) were selected and their CADIA values were calculated for the determination of noise levels, and correlations between the CADIA values and the actual bone mass were performed. RESULTS: When the threshold value was 7, the percentage of pixels deviating from the set threshold value was small (0-11.3%). There were statistically significant correlations between the actual bone mass and the CADIA value for anterior sockets (p<0.001, r2=0.89) and posterior sockets (p<0.001, r2=0.9). For pooled data of both anterior and posterior sockets, the correlation was also statistically significant (p<0.001, r2=0.88). CONCLUSIONS: A high and statistically significant correlation between the actual bone mass and CADIA value was obtained, which suggests that the system could be suitable for the detection of small alveolar bone changes.  相似文献   

19.

Objective

To fabricate and characterise a novel biomimetic composite material consisting of aligned porous ceramic preforms infiltrated with polymer.

Method

Freeze-casting was used to fabricate and control the microstructure and porosity of ceramic preforms, which were subsequently infiltrated with 40–50% by volume UDMA-TEGDMA polymer. The composite materials were then subjected to characterisation, namely density, compression, three-point bend, hardness and fracture toughness testing. Samples were also subjected to scanning electron microscopy and computerised tomography (Micro-CT).

Results

Three-dimensional aligned honeycomb-like ceramic structures were produced and full interpenetration of the polymer phase was observed using micro-CT. Depending on the volume fraction of the ceramic preform, the density of the final composite ranged from 2.92 to 3.36 g/cm3, compressive strength ranged from 206.26 to 253.97 MPa, flexural strength from 97.73 to 145.65 MPa, hardness ranged from 1.46 to 1.62 GPa, and fracture toughness from 3.91 to 4.86 MPa m1/2.

Significance

Freeze-casting provides a novel method to engineer composite materials with a unique aligned honeycomb-like interpenetrating structure, consisting of two continuous phases, inorganic and organic. There was a correlation between the ceramic fraction and the subsequent, density, strength, hardness and fracture toughness of the composite material.  相似文献   

20.
目的:对比CBCT法与数字化X线成像法(RVG)对下颌恒切牙根管形态评估的差异。方法:对101颗离体牙进行唇舌向及近远中向数字化X线片拍摄和CBCT高清牙列模式扫描,对图像进行根管数目、Vertucci根管分型、根管钙化和根尖口开口位置的评估,并通过CBCT图像建立偏角度投照的三角函数模型,计算偏向投照的角度。结果:CBCT法显示有30颗为双根管,RVG近远中向投照显示有36颗为双根管,卡方检验显示对根管数目和Vertucci根管分型两种方法均具有显著性差异(P<0.05)。两种方法对根管钙化和根尖口开口位置的评估均不具有显著性差异。30颗双根管牙中下颌恒切牙唇舌向双根管的最大距离(LaL)在0~1.5 mm之间的,85.7%的为Vertucci III型,LaL在1.5~2 mm之间的,66.7%为Vertucci IV和V型。以根尖片上双根管显示距离为1 mm计算,LaL在1~2 mm之间的,偏向投照角度为26.6°~45.0°,LaL在0.1~1 mm之间的,偏向投照角度为45.0°~84.3°。结论:CBCT高清牙列模式扫描和RVG投照对于根管数目和Vertucci根管分型的评估具有显著性差异,对于根管钙化和根尖口开口位置的评估不具有显著性差异。LaL在1~2 mm之间时,偏角度投照的临床可操作性较强。  相似文献   

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