溴甲酚紫指示剂对ELISA法加样的监测

输血系统自动化程度的提高 ,使检验质量有了充分的保证 ,但酶联免疫吸附法 (ELISA)实验中样品漏加现象时有发生 ,既有人为因素 (责任心不强 ) ,也有仪器设备因素 (全自动或手工加样器故障 )。目前某些国产试剂使用了样品加注指示剂 ,但一些进口试剂不具备指示剂 ,为此笔者尝试在Dia Sorin-HCV ELISA丙肝测定试剂盒样品稀释液中加入酸碱指示剂溴甲酚紫作为样品加注与否的指示 ,并进行对比实验 ,取得较好的效果。材料与方法1　材料1 .1　设备 :ML-FAME全自动酶免分析仪 (瑞士 ,Hamilton ) ,ML-STAR全自动加样仪 (瑞士 ,Hamilton) …     

大隐静脉高位结扎及剥脱术后下肢深静脉血栓形成的危险因素分析

目的 探讨大隐静脉高位结扎及剥脱术后下肢深静脉血栓形成(LDVT)的原因及防治措施.方法对1996年1月～2005年1月收治的1849例大隐静脉曲张患者,均行大隐静脉高位结扎及剥脱术,其中10例术后出现LDVT,发生率为0.54%.经静脉给予低分子右旋糖酐祛聚、肝素抗凝和尿激酶溶栓治疗.结果 8例患者在治疗24～48 h后患肢疼痛缓解,并开始消肿;1例48 h后患肢肿胀,且足背动脉搏动减弱改行手术取栓,术后次日足背动脉搏动恢复;死亡1例.随访3～18个月,根据B超检查结果,治愈8例,好转1例.结论 LDVT的病因是多因素的,早期诊断和及时处理是改善预后的关键.     

大隐静脉曲张激光闭合术时高位结扎与未高位结扎的近期复发率对比研究

目的 研究大隐静脉激光闭合术时高位结扎与未高位结扎对近期复发率的影响,明确大隐静脉激光闭合术时是否有必要附加大隐静脉高位结扎术。方法 将2004年3月至2006年3月接受大隐静脉激光闭合术的215例患者随机分为两组,A组：大隐静脉高位结扎加激光闭合术,B组：单纯大隐静脉激光闭合术,比较其术后复发率及并发症的区别。结果 随访6～29个月,1例失访,无深静脉血栓及肺栓塞发生。A组复发4例,复发率3.8%,B组复发9例,复发率8.3%,两组复发病例病因均为原发性深静脉瓣膜功能不全,单纯大隐静脉曲张术后无复发。经统计学分析,两组复发率无统计学意义（P〉0.05）。结论 没有证据表明行大隐静脉激光闭合术时首先行高位结扎更有优势,未高位结扎并不增加深静脉血栓形成及肺栓塞的发生机会。     

腹腔镜辅助下大隐静脉隔绝术治疗大隐静脉曲张60例

目的探讨腹腔镜辅助下大隐静脉隔绝术的疗效。方法2000年1月～2004年1月对60例66条大隐静脉曲张腹腔镜辅助下行大隐静脉隔绝术,腹腔镜辅助下高位结扎、电灼大腿段大隐静脉,阻断其小腿段所有属支及交通支,使大隐静脉与体循环隔绝。结果手术时间30～60min,(50±9)min;术后住院时间3～5d,(3.5±0.6)d。60例随访1～36个月,平均28个月,无复发。结论腹腔镜辅助下大隐静脉隔绝术创伤小,疗效好,复发率低,是治疗大隐静脉曲张的理想术式。     

不同浓度5-溴脱氧尿嘧啶核苷标记山羊骨髓基质干细胞的体外研究

Objective To explore the feasibility of labeling and tracing in vitro goat bone marrow mesenchymal stem cells (BMSCs) by bromodeoxyuridine (BrdU) on the basis of investigation of its optimal concentration, incubating time and cytotoxicity. Methods A healthy goat, aged 10 months old, male, weighing 32 kg, was used in this study. Bone marrow was aspirated. BMSCs were isolated and cultured using the adherence method in vitro. The fourth passage of BMSCs (P4) were incubated with BrdU at 5, 10, 15, 20 μmol/L as 5, 10, 15, 20 μmol/L BMSC groups. Cells were not labeled by BrdU as negative control. The following parameters were measured: induction, differentiation and determination of goat BMSCs; the optimal mass concentration and incubation time of 5-BrdU labeling; cell positive rate at 12, 24, 48 and 72 hours in each group using immunofluoreseenee; the cell survival rate after various concentrations of BrdU ladling by trypan-blue exclusion. Results The morphology of the primary and passage goat BMSCs was fusiform in shape. Goat BMSCs could differentiate into osteoblasts and chondrocytes following induction. BMSC nucleus showed green fluorescence under fluorescence microscope after being labeled by BrdU. The mean labeling rate increased with the increase in the concentration and incubation time of BrdU, and reached to (93.32± 3.25)% after incubation in 15 μmol/L, BrdU for 48 hours. There were no significant differences between 15 μmol/L BrdU for 72 hours, 20 μmol/L BrdU for 48 hours and 72 hours (P > 0.05), or between the other groups or time points (P < 0.05). The labeling rate of the blank control group was 0. The cell survival rate was all above 90% (P > 0.05). Conclusions BrdU can be used as a labeling marker for goat BMSCs. When the concentration is 15 μmol/L and the incubation time is 48 hours, the optimal labeling effect can be achieved. Goat BMSCs labeled with BrdU is of high efficiency and safety.     

克痤隐酮凝胶治疗寻常痤疮68例临床观察

我科于2006年6月-2006年10月应用克痤隐酮凝胶治疗寻常痤疮68例，取得较好疗效，现报告如下：     

4′-溴甲基-2-联苯甲酸叔丁酯的合成

4′-溴甲基-2-联苯甲酸叔丁酯（1）是降压药替米沙坦（telmisartan）的合成中间体。本研究参考文献，用4′-甲基-2-氰基联苯（2）经水解、酯化、溴代制得1（图1），并进行了改进。2在乙醇-水（5：1）中于80℃反应16h，得粗品纯度99％，可直接用于下步反应。酯化时，文献用浓硫酸催化或直接通入异丁烯制取，用HPLC跟踪反应进程，经试验结果不理想。现改在0℃用叔丁醇加DCC酯化，收率90％（文献：86．1％）。溴化时用氯仿代替四氯化碳㈨作溶剂。改进后的1总收率61％。