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.     

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％。     

低浓度布比卡因颈丛麻醉致心室纤颤救治成功1例

患者青年女性，17岁，40kg，既往体健，否认有任何药物过敏及中毒史，因左侧甲状腺瘤拟在颈丛麻醉下行左侧甲状腺次全切除术。术前血常规，生化检验，甲状腺功能检验，心电图及胸片，腹部B超均未有异常阳性发现，颈部B超示：左侧甲状腺瘤。术前30min肌注鲁米钠那0．1g，东莨菪碱5mg，人室后开放静脉，监测BP、HR、ECC、sPO2。先于颈4横突处注入0．2％布比卡因5mL行深颈丛阻滞，     

托吡酯单药治疗癫痫临床分析

托吡酯(CTMP)为一新型的抗癫痫药物,国内外多中心开放或双盲对照试验已证实,对难治性癫痫部分性发作治疗有较好的疗效[1、2 ] ,但国内有关托吡酯单药治疗的报道较少。我科试用托吡酯单药治疗癫痫,观察其临床疗效及耐受性。1　资料和方法1.1一般资料　本院门诊确诊癫痫患者(符合     

错位基牙38例固定修复前的活动托牙矫正治疗

笔者自1997年以来采用兼有可摘矫治器功能的活动托牙,对38例错位基牙进行矫正治疗,取得了满意的临床效果.     

盐酸托烷思琼预防脑动脉瘤栓塞术后恶心呕吐的观察

目的:观察盐酸托烷思琼对预防脑动脉瘤栓塞术患者术后恶心呕吐(PONV)的有效性和安全性。方法:选择行颅内动脉瘤栓塞术患者45例,随机分为3组,每组15例,于手术结束前30分钟A组患者缓慢静注盐酸托烷思琼5mg,B组患者缓慢静注盐酸托烷思琼3mg,C组患者给予生理盐水。术后观察并记录以下指标:(1)术后24h内恶心呕吐发生率及强度;(2)术后2、8h镇静评分(OAA/S);(3)术后2、8h平均动脉压(MAP),心率(HR);(4)各组不良反应的发生情况。结果:术后24h内两治疗组恶心呕吐发生率显著低于对照组,差异有统计学意义(P<0.05或P<0.01)。托烷思琼5mg组恶心呕吐发生率略低于3mg组,但差异无统计学意义(P>0.05)。结论:托烷思琼可降低脑动脉瘤栓塞术患者术后恶心呕吐的发生率。托烷思琼3mg不仅可以减少药物用量,而且能减少副作用的发生,是一种经济、有效、安全的止吐方法。     

采用压缩机吸入溴化异丙托品溶液治疗婴幼儿喘息性疾病80例疗效观察

婴幼儿喘息性疾病(简称喘病)是儿科常见的一组疾病，其病因多样，发病机理尚未完全明确，目前多采用综合治疗，但少数病例疗效仍不理想。我院儿科两年来采用压缩机吸入溴化异丙托品溶液控制喘息状态。取得较好的疗效，现总结如下。