放线共生放线杆菌表面相关物质对Mc3T3—E1细胞的增殖？…

目的：观察放线共生放线杆菌表面相关物质成对骨样细胞Ｍｃ３Ｔ３－Ｅ１的增殖抑制作用。方法：采用细胞计数法和图像分析法观察。结果：此物质抑制作用明显，能抑制分裂，增殖，使细胞，细胞核面积增大，１００μｇ／ｍｌ与对照组差别显著（Ｐ〈０．０５），且细胞无死亡现象。结论：此物质可明显抑制成骨样细胞Ｍｃ３Ｔ３－Ｅ１的生长，增殖，在骨缺失过程中起重要的作用。     

放线共生放线杆菌表面相关物质对成骨样细胞Mc3T3-E1的DNA合成及细胞周期的影响

目的：观察放线共生放线杆菌表面相关物质对Ｍｃ３Ｔ３－Ｅ１细胞的ＤＮＡ合成和细胞周期的影响。方法：应用流式细胞仪技术。结果：１００μｇ／ｍｌ组明显抑制细胞ＤＮＡ合成，细胞增殖指数（Ｓ＋Ｇ２Ｍ）％降低（Ｐ＜０．０５）。结论：此物质不仅抑制细胞的分裂、增殖，而且还抑制细胞的ＤＮＡ合成，提示其在牙周病骨吸收过程中起着重要作用     

放线共生放线杆菌表面相关物质对成骨样细胞Mc3T3—E1？…

目的：观察放线共生放线杆菌表面相关物质对Ｍｃ３Ｔ３－Ｅ１细胞的ＤＮＡ合成和细胞周期的影响。方法：应用流式细胞仪技术。结果：１００μｇ／ｍｌ组明显抑制细胞ＤＮＡ合成，细胞增殖指数（Ｓ＋Ｇ２Ｍ）％降低（Ｐ〈０．０５）。结论：此物质不仅抑制细胞的分裂、增殖、而且还抑制细胞的ＤＮＡ合成。提示其在牙周病骨吸收过程中起着重要作用。     

放线共生放线杆菌表面相关物质对人牙龈成纤维细胞的增殖抑制作用

目的：观察放线共生放线杆菌表面相关物质对人牙龈成纤维细胞的增殖抑制作用。方法：采用细胞计数法和图像分析法观察对人牙龈成纤维细胞的生长抑制作用。结果：此物质抑制作用明显，能抑制细胞的分裂、增殖，使细胞、细胞核面积增大，１００ｍｇ／Ｌ对与对照组差别显著（Ｐ＜０．０５），且细胞无死亡现象。结论：此物质可明显抑制人牙龈成纤维细胞的生长、增殖，在牙周病病理变化过程中起重要作用     

放线共生放线杆菌表面相关物质对人牙龈成纤维细胞的？…

目的：观察放线共生放线杆菌表面相关物质对人牙龈成纤维细胞的增殖抑制作用。方法：采用细胞计数法和图像分析法观察对人牙龈成纤维细胞的生长抑制作用。结果：此物质抑制作用明显，能抑制细胞的分裂、增殖、使细胞、细胞核面积增大，１００ｍｇ／Ｌ对与对照差别显著，且细胞无死亡现象。结论：此物质可明显抑制人牙龈成纤维细胞的生长、增殖，在牙周病病理变化过程中起重要作用。     

放线共生放线杆菌表面相关物质对成骨样细胞Mc3T3—E1碱性磷酸酶和矿化能力的影响

目的：观察放线共生放线杆菌表面相关物质对Mc3T3-E1细胞碱性磷酸酶活性的影响。方法：酶动力学方法。结果：此物质明显抑制细胞的碱性磷酸酶活性,在100mg/L浓度7d时与对照组差别显著（P＜0．05）。结论：此物质在骨吸收过程中起重要作用。     

放线共生放线杆菌表面相关物质在成纤维细胞L929的细？…

目的：探讨放线共生放线杆菌表面要关物质对成纤维细胞Ｌ９２９的细胞毒性作用。方法：采用ＭＴＴ法、细胞计数进行细胞毒性检测，结果：放线共生放线力表面相关物质可明显抑制成纤维细胞Ｌ９２９的分裂、增殖，并呈明显的剂量依赖性，１００ｍｇ／Ｌ浓度组与对照组差别显著，但不致细胞死亡。结论：放线共生放线力表面相关物质对Ｌ９２９细胞有明显的毒性作用，其致病机理不同于ＬＰＳ。     

放线共生放线杆菌表面相关物质对人牙龈成纤维细胞DNA合成和细胞周期的影响

目的观察放线共生放线杆菌表面相关物质对人牙龈成纤维细胞的DNA合成和细胞周期的影响。方法应用流式细胞仪技术。结果100mg/L组明显抑制细胞DNA合成，细胞增殖指数（S+G2M）%降低（P<0.05）。结论此物质不仅抑制细胞的分裂、增殖，而且还抑制细胞的DNA合成。     

丹参对成骨细胞株MC3T3─E1细胞碱性磷酸酶活性及DNA合成影响的实验研究

选择克隆化成骨细胞株——ＭＣ３Ｔ３－Ｅ１细胞，采用细胞培养方法，观察细胞内ＤＮＡ合成与碱性磷酸酶（ＡＬＰａｓｅ）活性，了解丹参对体外培养的成骨细胞生长、分化与代谢的影响。研究结果显示，丹参明显增强ＭＣ３Ｔ３－Ｅ１细胞内ＡＬＰａｓｅ活性，５．０ｍｇ／ｍｌ浓度时，丹参对ＭＣ３Ｔ３－Ｅ１细胞内碱性磷酸酶活性影响最大，比对照组增强约１３５％。丹参这种促进作用只限于分化晚期的ＭＣ３Ｔ３－Ｅ１细胞，而对分化早期细胞内碱性磷酸酶活性产生抑制作用。其次，这种作用还与药物作用时间有关。但是，丹参对各生长分化期的ＭＣ３Ｔ３－Ｅ１细胞内ＤＮＡ合成均无影响。本研究结果表明，丹参有明显增强体外培养分化晚期的ＭＣ３Ｔ３－Ｅ１细胞内碱性磷酸酶活性的作用，这种作用不是通过促进细胞增殖，而是改善细胞功能实现的，并且受丹参药物浓度与作用时间的影响，说明丹参可能在促进正畸牙齿移动中新生牙槽骨形成方面发挥作用。     

放线共生放线杆菌表面相关物质对人牙周膜成纤维细胞在牙根片上附着的影响

目的：观察放线共生放线杆菌表面相关物质对人牙周膜成纤维细胞在牙根片上附着的影响。方法：应用细胞计数法和扫描电镜观察法。结果：100mg/L组对人牙周膜成纤维细胞在根面附着有明显抑制作用,表现为正常牙根片上附着细胞数明显少于对照组（P＜0．05）;扫描电镜显示细胞生长数量减少,细胞突起伸展不充分。结论：此物质可抑制人牙周膜成纤维细胞在牙根面上的附着。     

Electrocatalytic deposition of poly(3-bromothiophene)

The influence of a catalytic amount (e.g. 0.1%) of 2,2′-bithiophene on the electrochemical polymerization of 3-bromothiophene has been investigated. The presence of bithiophene in the polymerization medium decreases the minimum potential required for poly(3-bromothiophene) deposition, and increases the polymerization rate at a given potential. However, the electrochemical generation of 3-bromothiophene cation radicals is required for poly(3-bromothiophene) formation, indicating that radical-monomer coupling is not a significant polymerization pathway. The main role of bithiophene in promoting poly(3-bromothiophene) deposition appears to be as a nucleation initiator. A negligible quantity of bithiophene is incorporated into the polymer.     

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目的    研究口腔鳞状细胞癌（OSCC）组织中细胞信号传导和转录激活因子（STAT3）的表达及意义。方法    应用免疫组织化学EnVosion法,检测山西医科大学第一医院病理科2005年1月至2009年12月存档的50例OSCC病理组织标本与10例正常口腔黏膜组织中STAT3蛋白的表达水平,并进行统计学分析。结果    OSCC标本中STAT3主要表达在细胞浆,也有少量表达在细胞核。STAT3在OSCC标本中的阳性表达率为88.0%,明显高于在正常口腔黏膜组织中的表达率（10.0%）,差异有统计学意义（P < 0.01）。STAT3表达与OSCC病理分级、临床分期和是否有淋巴结转移密切相关（P < 0.05）。结论    STAT3蛋白的异常表达与OSCC的发生、发展有密切的关系,可作为OSCC治疗和预后的辅助性指标。     

Transforming growth factor-beta3 (Tgf-beta3) down-regulates Tgf-beta3 receptor type I (Tbetar-I) during rescue of cranial sutures from osseous obliteration

Appropriate biochemical regulation of intramembranous bone growth from sutures is necessary to achieve correct craniofacial morphology. Failure to form sutures (agenesis) or to maintain sutures in their unossified state (craniosynostosis) can result in severe facial dysmorphology. Several factors such as Twist, Msx2, fibroblast growth factors (Fgfs), bone morphogenetic proteins (Bmps) and transforming growth factors-beta (Tgf-betas) regulate suture patency, likely by interacting with one another. Tgf-beta2 and Tgf-beta3 use the same cell surface receptors, yet have opposite effects on suture patency, cellular proliferation and apoptosis within the suture. One possible mechanism by which Tgf-beta3 rescues sutures from obliteration is by regulating the ability of suture cells to respond to Tgf-beta2. As Tgf-beta3 does not regulate protein levels of Tgf-beta2 in sutures, Tgf-beta3 could regulate tissue responsiveness to Tgf-beta2 by regulating Tgf-beta2 access to receptors. Tgf-beta3 is a more potent competitor than Tgf-beta2 for cell surface receptors, so it is proposed that Tgf-beta3 binds to and down-regulates Tgf-beta receptor type I (Tbetar-I) expression by suture cells. This down-regulation would limit the ability of cells to respond to all Tgf-betas, including Tgf-beta2. To test this hypothesis, an in vitro culture model was used in which fetal rat sutures either remain patent or are induced to fuse when cultured in the presence or absence of dura mater, respectively. Tgf-beta3 was added to cultured calvaria and changes in the number of receptor positive cells within the suture were established. Data were compared with that seen in control sutures and in normal sutures in vivo. It was found that the numbers of cells expressing Tbetar-I within the suture matrix increased over time in sutures remaining patent. Osteoblastic cells lining the bone fronts on either side of sutures were Tbetar-I positive during early morphogenesis, but these numbers declined as sutures fused, both in vivo and in vitro. Addition of Tgf-beta3 to calvaria in culture decreased the number of Tbetar-I expressing cells in both fusing and non-fusing sutures, with dramatic decreases in the numbers of osteoblasts expressing Tbetar-I.     

计算机辅助颅颌面畸形的三维诊断

利用侧位Ｘ线头影测量对颅颌面畸形进行诊断分析，已有相当长的时间．但因该方法取自颅颌面结构左右两侧的均值，用其测量分析不对称颅颌面畸形，有很大局限性．本文报告一种将正位和侧位两张Ｘ线头影片结合起来的三维Ｘ线头影测量分析方法，以及标准化与个体化相结合的诊断方法在复杂、不对称颅颌面畸形诊断中的应用．     

正常T细胞表达和分泌的活性调节蛋白（RANTES）及其受体CCR3在OLP中的表达

目的：检测正常T细胞表达和分泌的活性调节蛋白（RANTES）及其受体CCR3在口腔扁平苔藓（OLP）病损中的表达,探讨其在OLP发生发展过程中的作用及意义。方法：sP免疫组化染色检测30例OLP黏膜组织和10例正常口腔黏膜组织中RANTES、CCR3的表达。结果：OLP黏膜组织RANTES、CCR3的表达均高于正常口腔黏膜组织,两者差异有统计学意义（P〈0．05）。结论：与正常口腔黏膜组织相比,OLP组织中RANTES及CCR3表达增多且分布存在差异,提示RANTES及CCR3在OLP的发生发展过程中发挥一定作用。     

Application of the 3D digital ostectomy template (DOT) in mandibular angle ostectomy (MAO)

Background

Mandibular angle ostectomy (MAO) is a standard approach in reconstruction of facial contour that is commonly used in East Asian patients with prominent mandibular angles (PMA). MAO is commonly performed via an intraoral approach to reduce scar visibility and risk of facial nerve injury. Since this intraoral approach for MAO has limited visual guidance during the procedure, plastic surgeons often perform the operation based on personal clinical experience. Therefore, we designed a 3D digital ostectomy template (DOT) for guidance during surgery to improve the accuracy and safety of MAO.