IL—1,IL—6,TNF对人TMJ滑膜细胞蛋白合成的影响

目的：研究人ＴＭＪ滑膜细胞（ＳＭＣ）蛋白质合成能力，与其它组织细胞的差异，及细胞因子对这方面的影响。方法：采用体外培养的ＳＭＣ、ＴＧＣ、ＮＭＣ３种细胞及无血清培养液，应用紫外分光光度仪在２８０ｎｍ波长处，对培养上清中的蛋白含量进行测定，并与加用ＩＬ－１、ＩＬ－６、ＴＮＦ后蛋白质合成的量进行对比观察。结果：正常状态下，ＴＧＣ蛋白合成量最高，ＯＤ值达０．１４，而ＳＭＣ最低，为０．０７９。在加用细胞因子作用４８ｈ后，ＳＭＣ蛋白含量达到０．１１７，提高３０％，而ＴＧＣ、ＮＭＣ却下降１０％～３０％。结论：正常状态下ＳＭＣ合成蛋白质成份较其它细胞少，而细胞因子可刺激ＳＭＣ蛋白质合成增加，这些蛋白成份中可能具有影响关节炎症的物质。     

IFN-γ enhances the anti-tumour immune response of dendritic cells against oral squamous cell carcinoma

Objective

To investigate the expression of antigen processing-1 (Tap-1) and Tapasin in oral squamous cell carcinoma (OSCC), and observe the immune response against OSCC by use of IFN-γ-antigen induced dendritic cells (DCs) in vitro and in vivo.

Design

Expression of Tap-1 and Tapasin in different cell lines was analysed. CAL27 cells were treated with IFN-γ. Antigen from the treated cells was presented by DCs. Pulsed DC was then co-cultivated with CD8+ T lymphocyte to induce antigen specific cytotoxic lymphocytes (CTLs). The immune response elicited by CTLs against OSCC was observed.

Results

A significant lower expression of Tap-1 and Tapasin was observed in OSCC cell lines. IFN-γ exerted time-dependent effect for increasing the expression of these genes. Antigen from the treated CAL27 cells was presented by DCs. CTLs were induced and generated a strong immune response in vitro and in vivo.

Conclusions

Tap-1 and Tapasin were downregulated in OSCC. IFN-γ increased the expression of these genes. Use of IFN-γ-antigen induced DCs could induce stronger immune response in vitro and in vivo.     

感官分析法和便携式硫化物检测仪检测口臭的相关性研究

目的比较感官分析法(鼻测法)和便携式硫化物检测仪(商品名Halimeter)检测口臭之间的准确性和一致性。方法首先对2名嗅辨员进行嗅觉检测试验,以确定其进行感官分析评分的资质。选择86例符合试验条件的受试者,分别用感官分析法评价口臭程度,硫化物检测仪检测口腔挥发性硫化物(VSC)含量,使用SPSS11.0软件分析鼻测法得分均值和VSC水平的关系。结果2名嗅辨员一致性良好,Kappa值达到0.568,P<0.01。鼻测法得分均值与Halimeter检测所得硫化物峰值之间相关系数r=0.538,P<0.01;与硫化物稳定值之间相关系数r=0.546,P<0.01。结论鼻测法得分和Halimeter检测的口腔VSC含量之间存在显著相关关系,提示Halimeter可在一定程度上作为鼻测法的辅助手段,用以检测口臭。     

转化生长因子-β1与种植体骨整合的研究进展

转化生长因子(TGF)-β是一族具有多种功能的多肽生长因子,属于TGF超家族。在骨组织中,TGF-β1的含量最为丰富,能促进成骨细胞增殖和分化,是种植体周骨组织整合修复过程中一个重要的调节因子。本文对TGF-β1促进种植体骨整合的研究进展作一综述。     

倾斜种植体在上颌后牙区骨量不足患者中的应用

目的:探讨倾斜种植体作为一种避免上颌窦植骨的方法,应用于上颌骨后牙区骨量不足患者种植修复的可靠性。方法:2005年1月—2007年12月间,21例患者共27个固定桥修复上颌后牙缺失,分别使用ITI和Br覽nemark 2种种植系统共植入78颗种植体,其中34颗种植体采用倾斜植入,44颗轴向植入。所有患者均为上颌后牙区骨量不足无法直接接受常规种植体植入。种植体植入后常规愈合3个月,除1颗种植体失败外,其余种植体均功能性负载支持固定义齿修复,修复方式为黏结固位和螺丝固位。每例患者均于负载后12、24和36个月接受临床和放射学随访检查。采用SPSS11.0软件包对数据进行统计学处理。结果:上颌有1颗轴向种植体在术后2个月时失败,倾斜种植体无失败。随访时间为36个月。上颌轴向种植体的累积存活率为97.72%,倾斜种植体的累积存活率为100%,修复成功率为100%。随访期间,种植体周围软组织保持稳定,平均探诊深度和附着水平无明显变化。结论:倾斜种植体作为一种上颌骨后牙区骨量不足患者的治疗方法是可靠的,能有效避免植骨手术,并节约治疗时间。     

老年人原发性三叉神经痛改进撕脱术治疗的临床疗效观察

目的:探讨改进的三叉神经周围支撕脱术治疗老年人原发性三叉神经痛的临床疗效.方法:在三叉神经周围支撕脱术的基础上,采用局部骨碎块填塞神经孔治疗32例老年原发性三叉神经痛患者,其中第Ⅱ支17例,第Ⅲ支10例,第Ⅱ、Ⅲ支5例,均为单侧病变.结果:本组术后随访观察最长6年,最短5个月,显效12例,有效16例,无效4例,有效率87.5%.术后患者撕脱神经所支配区域的面部遗有不同程度的感觉麻木,无其它并发症.结论:改进撕脱术是一种治疗老年人原发性三叉神经痛简单、安全而有效的方法.     

Transient loss of power of accommodation in 1 eye following inferior alveolar nerve block: report of 2 cases

Unintended intravascular injection from inferior alveolar nerve blocks can result in frustrating distant complications affecting such structures as the middle ear and eyes. Possible complications affecting the eyes include blurring of vision, diplopia, mydriasis, palpebral ptosis and amaurosis (temporary or permanent). In this article, we present a complication that has been reported only rarely. Two patients developed transient loss of power of accommodation of the eye resulting in blurred vision after routine inferior alveolar nerve blocks on the ipsilateral side. Clear vision returned within 10-15 minutes after completion of the blocks. The possible explanation for this phenomenon is accidental injection into the neurovascular bundle of local anesthetic agents, which were carried via the blood to the orbital region. This resulted in paralysis of a branch of cranial nerve III, the short ciliary nerves that innervate the ciliary muscle, which controls accommodation.     

表面陶瓷化钛种植体与骨组织结合的界面表征及机制探讨

目的:通过对种植体-骨组织界面表征的研究,评价和分析新型表面陶瓷化钛种植体(Bio-Ti implant)的骨结合情况及机制.方法:制作犬下颌牙列部分缺损模型,设计制作相应的钛种植体,经过表面陶瓷化处理后,植入犬下颌骨,分别于3、6、12周处死动物,利用SEM对种植体表面矿物质沉积情况进行观察,同时分析其元素组成,对种植体-骨组织整体标本纵向界面进行元素线性扫描分析.采用未经表面处理的相同类型纯钛种植体作为对照.结果:Bio-Ti种植体周围新生类骨组织在3周时已有较多沉积,且与种植体结合较牢固,对少部分骨组织脱落处进行电镜观察及元素分析,种植体表面结构发生改建并且ca、P含量明显上升,微孔内及周围可以看到颗粒状类骨质沉积物.线扫描及面扫描结果显示,从骨组织过渡到种植体的微观区域的ca、P元素并未发生突变,提示两者之间磷酸钙成分的互相渗透与结合.结论:新型Bio-Ti表面陶瓷化纯钛种植体可以诱导体内类骨质早期沉积,与骨组织发生紧密结合,并显著缩短骨结合时间.     

Familial multiple odontogenic keratocysts

Multiple odontogenic keratocysts (OKCs) are principle features of nevoid basal cell carcinoma syndrome (NBCCS; Gorlin-Goltz syndrome). NBCCS is a genetic disorder transmitted by an autosomal dominant gene with variable expressivity, which is important to recognize when a patient has multiple OKCs. The cysts of the jaws are among the most common findings. Another feature is a certain appearance of the face, such as: large calvaria, high-arched eyebrows, broad nasal root, and mild hypertelorism. Before-therapy diagnosis is, therefore, as important as after-therapy diagnosis. Genetic counseling and examination may also be indicated. The purpose of this paper was to present a family case report of nevoid basal cell carcinoma syndrome with multiple odontogenic keratocysts. The features identified by these combined clinical, imaging, and histologic findings are described, along with a brief mention of the family history and a review of the literature.     

干燥方法对定量光导荧光系统分析早期脱矿病损的影响

目的研究不同的干燥方法对定量光导荧光系统(guantitative light-induced fluorescence,QLF)分析病损脱矿程度的影响,探讨最适合QLF临床检查使用的干燥方法.方法选择新鲜拔除的人无龋前磨牙8个,颊面用指甲油封闭留窗口大约3mm×3mm,置于脱矿液中,37℃摇床中7d形成脱矿病损.标本分别采用三种不同的干燥方法放置于空气中使之自然干燥、压缩空气干燥30s和棉卷干燥30s,然后进行QLF检查并采用盲法分析病损脱矿的严重程度.设置△Q(荧光损失量)值变化5%为病损入口,得出的数据导入SPSS 11.5软件进行统计分析.结果釉质脱矿病损随着干燥程度的增加,在QLF荧光图像中均表现为脱矿严重程度的增加.病损放置自然干燥564.386(±87.542)s后,QLF能够检测到最大荧光损失,压缩空气干燥30s和棉卷干燥30s后,能检测最大荧光损失的时间分别为39.250(±7.778)s和139.375(±13.212)s.压缩空气吹干30s后,QLF图像中病损表现出明显的荧光损失,与其他两种干燥方法有统计学差异(P＝0.000).结论压缩空气干燥30s后,病损表现的荧光损失可以用来反映该病损的最大荧光损失值.临床使用压缩空气对早期病损吹干30s是达到可靠干燥效果的最快速而实用的方法.