彩色多普勒超声对医源性股动脉假性动脉瘤的临床应用

目的：探讨彩色多普勒超声对医源性股动脉假性动脉瘤的诊断及治疗价值。方法对22例经皮股动脉穿刺介入术后触及搏动性肿块的患者采用二维超声、彩色多普勒超声、频谱多普勒超声检查,对声像图进行总结分析,在超声引导下压迫及注射治疗。结果本组22例假性动脉瘤彩色多普勒超声诊断与临床符合率100%（22/22）,18例经超声引导下压迫治疗后瘤腔闭合,3例经瘤腔内注射凝血酶治疗取得满意疗效,总治愈率95%（21/22）,1例行外科手术治疗。结论彩色多普勒超声是医源性假性动脉瘤首选的诊断及治疗方法。     

High Expression of Insulin-like Growth Factor H (IGF-Ⅱ) Using Bac-to-Bac Expression System

Objective In order to obtain mature insulin-like growth factor- Ⅱ ( IGF- Ⅱ ), we used Bac-to-Bac baculovirus expression system. Methods Firstly the IGF- Ⅱ cDNA was cloned into a donor plasmid pFastBac1 and the recombinant pFastBac1 was then introduced into competent cells DH 10Bac. Recombinant bacmids were constructed by transposing a mini-Tn7 element from a donor plasmid pFastBac1 to the mini-attTn7 attachment site on the bacmid where the Tn7 transposition functions were provided in trans by a helper plasmid, and then used to transfect Sf9 insect cells to get recombinant baculovirus. The recombinant baculovirus was used to infect insect cells. Results Agarose gel analysis showed that recombinant donor plasmid pFastBac1 was constructed successfully; Agarose gel analysis of PCR products confirmed recombinant bacmid ; SDS-PAGE and Western Blotting showed that a 7KD protein band appeared. Conclusion The mature IGF- Ⅱ with immunogenecity has been expressed and produced by using Bac-to-Bac expression system.     

ATR inhibition sensitizes liposarcoma to doxorubicin by increasing DNA damage

Liposarcomas account for approximately 20% of all adult sarcomas and have limited therapeutic options outside of surgery. Inhibition of ataxia-telangiectasia and Rad3 related protein kinase (ATR) has emerged as a promising chemotherapeutic strategy in various cancers. However, its activation, expression, and function in liposarcoma remain unkown. In this study, we investigated the expression, function, and potential of ATR as a therapeutic target in liposarcoma. Activation and expression of ATR in liposarcoma was analyzed by immunohistochemistry, which was further explored for correlation with patient clinical characteristics. ATR-specific siRNA and the ATR inhibitor VE-822 were applied to determine the effect of ATR inhibition on liposarcoma cell proliferation and anti-apoptotic activity. Migration activity and clonogenicity were examined using wound healing and clonogenic assays. ATR (p-ATR) was overexpressed in 88.1% of the liposarcoma specimens and correlated with shorter overall survival in patients. Knockdown of ATR via specific siRNA or inhibition with VE-822 suppressed liposarcoma cell growth, proliferation, migration, colony-forming ability, and spheroid growth. Importantly, ATR inhibition significantly and synergistically enhanced liposarcoma cell line chemosensitivity to doxorubicin. Our findings support ATR as critical to liposarcoma proliferation and doxorubicin resistance. Therefore, the addition of ATR inhibition to a standard doxorubicin regimen is a potential treatment strategy for liposarcoma.     

异佛尔酮二异氰酸酯免疫毒性的实验研究

本文选用小鼠溶血空斑形成试验研究了异佛尔酮二异氰酸酯(IPDI)对Bal/C小鼠脾细胞的作用,选用ANAE染色法观察了IPDI对SD大鼠外周血T细胞的影响,并采用体外培养方法研究了IPDI对人外周血T细胞在PHA刺激下增殖转化的影响。结果表明,IPDI对小鼠脾脏抗体生成细胞的数量和功能均有抑制作用,并呈现出剂量-反应关系;而对细胞免疫反应在大鼠和人均表现为双向作用。     

敦煌医学及其文化内涵探析

探讨了敦煌医学的文化内涵,提出其特色主要表现在地域性、开放性、多样性、文学性与艺术性,旨在为敦煌医学及其文化的研究提供思路。     

Effects of tooth rotation on neighboring teeth and periodontal tissues

In the present experiment,we investigate the effects of orthodontic tooth rotation onneighboring teeth and periodontal tissues.The second maxillary incisors of 16 randomly selecteddogs were subjected to rotation at a magnitude of 100 grams and a moment of 550 g·mm in a du-ration of 3 to 56 days.Then sections were prepared for histological examination.The findings re-vealed that,due to tooth rotation,neighboring teeth were drifted and rotated(82%),and therewere disarrangement and hyalinization of the periodontal ligament(88%),remodeling of the pe-riodontium(86%)and root resorption(32%)were also observed.These results demonstratethat tooth rotation may exert marked effects on neighboring teeth and periodontal tissues,whichmay be of important clinical significance.     

A study of the rotation rate of single-rooted teeth in dogs

Sixteen one-year-old dogs were used in our experiment.We rotated the maxillary secondincisors of the dogs,applying a force of 100g and a moment of 550g·mm.The duration of theexperiment varied from 72h to 8 weeks.Activation was performed once every 2 weeks and the impressions were taken in order to measure the angles of rotation.The results of our experiment showthat the rotation rate of single-rooted tooth in dogs is 3.04/week.The graph shows the form ofgradual stairs.This paper introduces a new specialized experimental apparatus for tooth rotation.The angles of rotation are measured geometrically.     

住院癌症患者口腔衰弱现状及影响因素分析

目的 调查住院癌症患者口腔衰弱现状,分析其影响因素,为针对性干预提供参考。方法 采用便利抽样法抽取207例住院癌症患者为调查对象,采用一般资料问卷、口腔衰弱指数-8、口腔健康评估量表、营养风险筛查量表2002、衰弱量表、领悟社会支持量表进行调查。结果 住院癌症患者口腔衰弱发生率为64.3%,年龄、吸烟史、化疗史、口干、义齿、口腔健康不良、身体衰弱是住院癌症患者口腔衰弱的影响因素（均P＜0.05）。结论 住院癌症患者口腔衰弱发生率较高,医护人员需根据其影响因素采取预防管理措施,控制口腔衰弱的发生和发展。     

翻转课堂在骨科教学中的可行性及必要性分析

翻转课堂目前已逐渐成为教育领域的关注焦点,但在医学教育领域内,目前该技术应用不多。该文介绍了翻转课堂的由来、特点,重点讨论了在骨科教学中应用的可行性、必要性,并分析了目前推广应用该技术的难点和障碍所在,旨在推动医学教育的不断发展。     

老年性上消化道疾病的临床及x线特点

本文报告144例老年性上消化道疾病,并与112例青年病人进行比较。初步探讨老年人上消化道疾病在临床及 x 线上有以下特点:1.病史长,平均12.3年;2.一般性消化道症状多,典型症状少,并且消化道肿瘤、胃下垂,憩室明显增多;3.并发症多,为36.3%;4.x 线表现功能性改变、粘膜破坏、胃壁僵硬多见而明显。