兰宏江用四妙勇安汤治疗宫颈上皮内瘤变34例

宫颈上皮内瘤变（cervical intraepithefial neoplasias,CIN）是临床常见的妇科疾病,应用中医治疗可以收到较好的疗效,作者总结恩师兰宏江20年来对CIN治疗心得,并进行系统的辨证分型,并对68例CIN患者进行分组,应用四妙勇安汤治疗的34例,治疗效果优于对照组。     

血小板表达TLR4调节LPS刺激血小板释放细胞因子的作用

Objective To affirm the expression of Toll like receptor 4 (TLR4) on the surface membrane of platelet and to explore the immunomodulatory factors[(interlukine-8(IL-8),β-thromboglobulin(β-TG), soluble CD40 ligand(sCD40L)] released by platelets after platelets stimulated by TLR4 ligand.Methods TLR4 expressed on the platelet was detected by flow cytometry. Monoclonal anti-human FcγRⅡantibody(Ⅳ.3)-treated human platelets were cultured with LPS in the presence or absence of blocking monoclonal antibody to human TLR4. The release of IL-8, β-TG, sCD40L were measured by specific enzymelinked immunosorbent assay. Results Human platelets could express functional TLR4. The detection rate of TLR4 on platelets were decreased after LPS involvement(P<0.01). It was noted that sCD40L and β-TG were present in large concentration in the release of platelets stimulated by TLR4 ligand but the release of IL-8 was independent of platelet activation after TLR4 engagement. The concentration of sCD40L and β-TG had no statistical difference between 1-5 μg/ml LPS. The effects of LPS on the modulation of secretory factors were attenuated by preincubation of platelets with an anti-TLR4 monoclonal antibody. Conclusion The TLR4 on platelet could recognize and link LPS, induce the release of sCD40L, β-TG by platelet, but could not influence IL-8.     

软骨细胞上清液诱导BMSC向软骨细胞转化的实验研究

目的:体外定向诱导大鼠骨髓基质干细胞(BMSC)向软骨细胞表型转化,并对诱导进行鉴定。方法:从SD大鼠中分别分离出BMSC和软骨细胞进行体外培养。收集软骨细胞培养上清液,作为BMSC诱导液从第2代开始进行诱导分化。7d后取出标本,甲苯胺蓝染色和Masson染色检测软骨基质的分泌,免疫组织化学检测软骨特异性Ⅱ型胶原表达,RT-PCR检测Ⅱ型胶原和aggrecan的mRNA表达。结果:镜下见细胞形态由梭形向多边多角形转化。甲苯胺蓝染色和Mas-son染色阳性,Ⅱ型胶原免疫组化检测阳性,RT-PCR检测Ⅱ型胶原和aggrecan mRNA呈阳性表达。结论:软骨细胞上清液可诱导BMSC向软骨细胞转化。     

人骨形态发生蛋白2基因重组腺病毒表达载体转染兔骨髓间充质干细胞*

背景：采用GatewayTM技术构建腺病毒载体,显著弥补了外源性细胞因子局部应用的缺陷。 目的：观察人骨形态发生蛋白2重组腺病毒表达载体(Ad-BMP-2/GFP)转染兔骨髓间充质干细胞后骨形态发生蛋白2的表达情况。 方法：密度梯度离心联合贴壁培养法,分离、培养、纯化兔骨髓间充质干细胞;GatewayTM技术构建的Ad-BMP-2/GFP腺病毒载体转染兔骨髓间充质干细胞。 结果与结论：RT-PCR检测转染诱导后的细胞表达成骨细胞特异性产物骨钙素;转染后兔骨髓间充质干细胞在mRNA水平和蛋白水平均有人骨形态发生蛋白2的表达。结果表明构建的Ad-BMP-2/GFP可高效转染兔骨髓间充质干细胞,骨形态发生蛋白2在细胞中能高效表达。     

外周血MSCs的分离培养及对G-CSF的动员反应

目的建市多种种属外用血间充质干细胞（MSCs）的分离培养方法，探讨其对粒细胞集落刺激因子（G—CSF）的动员反应。方法用percoll（1．131g/mL）分离多种种属外周血单个核细胞，进行贴壁培养MSCs。以G-CSF作为动员剂，培养骨髓和外周血来源的MSCs，计数动员前后的成纤维细胞集落形成单位（CFU-F）。结果对多种种属进行外周血MSCs分离培养，成功率不同。在本实验条件下．可以稳定的直接分离培养出大鼠外周血的MSCs。G—CSF动员后，骨髓来源MSCs的CFU-F数昔显著高于对照组（P〈0．01）；外周血来源MSCs的CFU-F数量也显著高于对照组（P〈0．01），接近4倍。结论不同种属外周血MSCs分离培养难易不同，其直接原因是生理条什下外周血中存在的MSCs量少导致的。G—CSF可以有效地动员大鼠骨髓和外周血MSCs。     

海生素对K562细胞生长及凋亡基因表达的影响

目的 探讨海生素对白血病K562细胞生长及凋亡基因表达的影响. 方法实验分为对照组、10mg/L海生素组和20rag/L海生素组.采用流式细胞术(FcM)、四唑蓝(MTT)和免疫细胞化学法测定海生素对K562细胞周期、细胞生长及细胞凋亡基因bcl-2和bax表达的影响. 结果海生素浓度为10mg/L和20mg/L时,可阻止K562细胞周期于G1/S期;海生素浓度为20mg/L时对K562细胞有抑制作用,在此浓度下随时间的延长细胞存活率有下降趋势;海生素浓度为20mg/L和40mg,L时,可下调凋亡抑制基因bcl-2的表达,上调凋亡促进基因hax的表达.结论 海生素可明显抑制K562细胞的增殖,使其阻滞于细胞周期的G1/S期;海生素还通过减少bcl-2的表达及增加bax的表达从而促进K562细胞的凋亡.     

大头径陶瓷-陶瓷全髋关节置换的早期疗效

背景：36 mm大直径陶瓷球头较28 mm常规直径陶瓷头增加了跳越距离,具有活动范围大,稳定性好,脱位率低等特点,适用于年轻,要求活动范围大,追求高生活质量患者。 目的：观察36 mm大头径陶瓷-陶瓷全髋关节假体行关节置换的早期疗效。 方法：2009-06/2010-07采用Depuy公司的PinnacleTM 36 mm大头径陶瓷-陶瓷全髋假体行初次人工全髋关节置换治疗18例(18髋)髋关节疾病患者。对照组为同期行PinnacleTM 28 mm直径陶瓷-陶瓷人工全髋关节置换治疗20例(20髋)髋关节疾病患者。 结果与结论：所有患者均获得随访,随访时间13~26个月。置换后切口均Ⅰ期愈合,未发生假体脱位、感染及下肢深静脉血栓形成等并发症。两组患者置换后Harris各项评分较置换前均明显改善(P < 0.05),且直径36 mm组置换后活动范围评分较直径28 mm组改善明显(P < 0.05);但两组置换后Harris总评分及疼痛、功能评分比较差异无显著性意义(P > 0.05)。结果初步表明现代陶瓷-陶瓷人工关节假体能有效减少因关节界面磨损导致的骨溶解及关节松动等并发症。36 mm大头径陶瓷-陶瓷全髋假体设计具有活动范围大,稳定性好,脱位率低等特点,在术中条件允许情况下,可作为首选型号。       

巨噬细胞分化的研究现状

巨噬细胞是机体的重要免疫细胞之一,在特异性免疫反应的诱发和免疫调节中起关键作用.巨噬细胞是一种多分化来源的细胞,单核细胞、CD34+造血干细胞及早期T淋巴细胞等在适当的因素作用下可分化成巨噬细胞,不同细胞来源的与不同因素诱导分化的巨噬细胞在功能与生物学特性方面有很大差异.     

血小板表达TLR4调节LPS刺激血小板释放细胞因子的作用

Objective To affirm the expression of Toll like receptor 4 (TLR4) on the surface membrane of platelet and to explore the immunomodulatory factors[(interlukine-8(IL-8),β-thromboglobulin(β-TG), soluble CD40 ligand(sCD40L)] released by platelets after platelets stimulated by TLR4 ligand.Methods TLR4 expressed on the platelet was detected by flow cytometry. Monoclonal anti-human FcγRⅡantibody(Ⅳ.3)-treated human platelets were cultured with LPS in the presence or absence of blocking monoclonal antibody to human TLR4. The release of IL-8, β-TG, sCD40L were measured by specific enzymelinked immunosorbent assay. Results Human platelets could express functional TLR4. The detection rate of TLR4 on platelets were decreased after LPS involvement(P<0.01). It was noted that sCD40L and β-TG were present in large concentration in the release of platelets stimulated by TLR4 ligand but the release of IL-8 was independent of platelet activation after TLR4 engagement. The concentration of sCD40L and β-TG had no statistical difference between 1-5 μg/ml LPS. The effects of LPS on the modulation of secretory factors were attenuated by preincubation of platelets with an anti-TLR4 monoclonal antibody. Conclusion The TLR4 on platelet could recognize and link LPS, induce the release of sCD40L, β-TG by platelet, but could not influence IL-8.     

ROC曲线评价缺血修饰白蛋白、高敏肌钙蛋白Ⅰ联合检测在急性冠脉综合征早期诊断中的应用

目的运用ROC曲线分析缺血修饰白蛋白(IMA)、高敏肌钙蛋白I(hs-TnI)联合检测在急性冠脉综合征早期诊断中的应用价值。方法选择我院经冠状动脉造影确诊的、发病至采血时间间隔在3 h以内的急性冠脉综合征(ACS)患者31例,分别检测血清IMA和hs-TnI水平。另选择31例同期经冠状动脉造影排除急性冠脉综合征胸痛患者作为非缺血性胸痛(NICP)患者组,31名外表健康的体检人员作为对照组。应用Logistic回归模型,绘制"IMA+hs-TnI"联合检测诊断急性冠脉综合征的ROC曲线,获得相应诊断效能参数,并与肌红蛋白等其它心肌标志物对比,评价IMA和hs-TnI用于急性冠脉综合征早期诊断的临床价值。结果发病3 h内,IMA诊断ACS的曲线下面积为0.840,hs-TnI为0.945。"IMA+hs-TnI"联合检测的曲线下面积为0.967,敏感性为90.3%,特异性为93.5%,高于IMA或hs-TnI单独检测及"TnI+Myo+CKMB"联合检测。结论 IMA和hs-TnI联合检测时可以发挥较好的互补作用,对发病3 h内ACS的诊断具有较高的特异性和敏感性,且高于"TnI+Myo+CKMB"联合检测。