高效液相色谱-电喷雾电离-质谱分析银杏叶中银杏内酯和白果内酯

银杏萜内酯包括银杏内酯和白果内酯是银杏提取物或银杏叶中主要的药效成分。本文用高效液相色谱 -电喷雾电离 -质谱 (HPLC ESI MS)法对银杏叶中银杏内酯和白果内酯进行分析。液相色谱条件为色谱柱为InertsilODS3,流动相为甲醇 -水 (36 :6 4) ,流速 1mL·min- 1 ;质谱为ZMDMicromass电喷雾质谱仪。得到了样品HPLC总离子流和选择离子 (m z 32 5 ,40 7,42 3,439)流图 ,及相应色谱峰的ESI MS质谱图 ,鉴别出银杏叶中白果内酯及银杏内酯A、B、C、J。本方法快捷 ,简便     

大蒜素诱导骨肉瘤细胞凋亡的作用及其机制的实验研究

目的探讨大蒜素诱导骨肉瘤细胞凋亡的作用及其机制。方法使用不同浓度大蒜素处理骨肿瘤细胞系后,采用流式细胞术检测细胞凋亡率,RT-PCR技术以及免疫印迹技术检测Bax的mRNA及蛋白水平的表达变化。结果大蒜素处理后骨肉瘤细胞凋亡率明显升高,并呈剂量依赖性;且细胞内的Bax的mRNA及蛋白表达均显著升高(P<0.05)。结论大蒜素在体外可诱导多种骨肉瘤细胞凋亡,可能与上调Bax的表达,促进细胞色素c的释放有关;大蒜素有望成为一种新的治疗骨肉瘤的化疗药物。     

Postprocedural Outcomes of Rural Children Undergoing Correction of Congenital Heart Lesions in Yunnan Province, China

The management of congenital heart disease (CHD) remains a significant challenge in developing regions. Since 2006, China California Heart Watch has provided cardiac services in China’s Yunnan province. Our Grants for Kids program aims to diagnose and fund surgical and nonsurgical treatments for underprivileged children with congenitally malformed hearts. This report analyzes our patient outcomes. From 2007 to 2010, 36 children with CHD underwent either surgical or percutaneous procedures at local Chinese medical centers, and 94% of our patients could be contacted for follow-up assessment. The mortality and complication rates of our patient population compare favorably with international data. Our study provides a model through which networking with local hospitals and regional cardiac centers can be an effective way to assist developing areas in providing cardiac care to rural underserved populations.     

右美托咪啶对颈丛麻醉下甲状腺手术应激反应的影响

目的观察右美托咪啶对颈丛麻醉下甲状腺手术应激反应的影响。方法美国麻醉医师学会(ASA)分级Ⅰ~Ⅱ级择期在颈丛麻醉下行甲状腺手术的患者60例,随机分为对照组(Con组)和盐酸右美托咪啶组(Dex组),每组30例,两组分别于麻醉诱导前(T0)、拔管即刻(T1)、术后第1天清晨(T2)和术后第2天清晨(T3)抽取静脉血,测定血糖、去甲肾上腺素、肾上腺素水平。结果与同组T0时间点相比,Con组T1时间点的平均动脉压(MAP)和心率(HR)均显著升高(P值均<0.05),而Dex组在各时间点均无明显变化(P值均>0.05)。Dex组T1时间点的MAP和HR均显著低于Con组同时间点(P值均<0.05)。Con组T1、T2、T3时间点的血糖、去甲肾上腺素及肾上腺素水平均显著高于同组T0时间点及Dex组同时间点(P值均<0.05)。结论颈丛麻醉期间持续应用盐酸右美托咪啶有利于维持术中血流动力学平稳,有效降低行甲状腺手术患者的围术期血糖、去甲肾上腺素、肾上腺素水平,抑制围术期应激反应。     

输卵管妊娠与人巨细胞病毒、弓形虫感染的相关性研究

目的　研究人巨细胞病毒、弓形虫感染与输卵管妊娠的相关性。方法　采用酶联免疫吸附测定 (ELISA)方法和聚合酶链反应 (PCR)技术检测输卵管妊娠患者与对照组血清人巨细胞病毒 (HCMV)和弓形虫 (TOXO)抗体以及生殖道HCMV和TOXODNA。结果　病例组血清HCMVIgG抗体阳性检出率为 31 9% ,明显高于对照组15 8% (P <0 0 5 ) ;HCMVIgM抗体、TOXOIgG、IgM抗体检出率均高于对照组 ,在统计学上无明显差异 (P >0 0 5 ) ;病例组宫颈、宫腔及输卵管组织中均分离到HCMVDNA和TOXODNA ,且宫颈HCMVDNA阳性检出率为14 3% ,明显高于对照组 (P <0 0 5 )。结论　输卵管妊娠与HCMV感染有关 ,TOXO感染为输卵管妊娠的可疑因素。     

大鼠心肌急性缺血再灌注Fos蛋白表达及其意义

目的:探讨急性心肌缺血再灌注早期不同时间心肌细胞内Fos蛋白表达的变化,为心肌早期缺血再灌注损伤致死死后诊断提供新方法。方法:在32只SD大鼠建立心肌早期缺血再灌注损伤模型,另外40只大鼠分为正常与缺血对照组。用免疫组化SABC法结合图象分析研究心肌细胞核Fos蛋白的累积情况。结果:缺血30min再灌注30min后,再灌注区有部分心肌细胞核呈弱阳性着色,以后随缺血时间延长核阳性增强。缺血90min再灌注30min后核棕褐色染色最强,180min后又开始减弱。正常和单纯缺血组心肌细胞核未见有阳性反应。HE染色无明显病理改变。结论:Fos蛋白表达高峰在缺血90～180min之间,FosSABC染色法可诊断缺血30min再灌注30min或更长时间的损伤。免疫组化染色法检测心肌细胞核Fos蛋白的表达有望成为急性心肌缺血再灌注死后诊断的一种有意义的手段。     

丹参片对冠状动脉药物支架术后患者远期预后的临床研究

[目的]观察丹参片对冠状动脉药物支架术后患者远期预后的影响。[方法]80例冠脉动脉药物支架术后1年的患者随机分为对照组与治疗组,治疗组在服用规范西药治疗基础上加服丹参片6个月,随访两组的临床终点事件。[结果]术后再梗率、PCI术、CABG术、心源性疾病住院率、术后脑中风中,两组间（P〉0.05）无统计学意义。然心功能衰竭发生率、心功能分级、心绞痛分级、自觉疗效（P〈0.05）有统计学意义,其中心绞痛分级（P〈0.01）有显著统计学意义。[结论]丹参片对冠状动脉药物支架术后患者有远期疗效。     

Chemokine-like factor 1, a novel cytokine, contributes to airway damage, remodeling and pulmonary fibrosis

Background Chemokine-like factor 1 (CKLF1) was recently identified as a novel cytokine. The fulllength CKLF1 cDNA contains 530 bp encoding 99 amino acid residues with a CC motif similar to that of other CC family chemokines. Recombinant CKLF1 exhibits chemotactic activity on leucocytes and stimulates proliferation of murine skeletal muscle cells. We questioned whether CKLF1 could be involved in the pathogenesis of inflammation and proliferation in the lung. Therefore we used efficient in vivo gene delivery method to investigate the biological effect of CKLF1 in the murine lung. Methods CKLFl-expressing plasmid, pCDI-CKLF1, was constructed and injected into the skeletal muscles followed by electroporation. Lung tissues were obtained at the end of week 1,2,3 and 4 respectively after injection. The pathological changes in the lungs were observed by light microscope. Results A single intramuscular injection of CKLF1 plasmid DNA into BALB/c mice caused dramatic pathological changes in the lungs of treated mice. These changes included peribronchial leukocyte infiltration, epithelial shedding, collagen deposition, proliferation of bronchial smooth muscle cells and fibrosis of the lung. Conclusions The sustained morphological abnormalities of the bronchial and bronchiolar wall, the acute pneumonitis and interstitial pulmonary fibrosis induced by CKLF1 were similar to phenomena observed in chronic persistent asthma, acute respiratory distress syndrome and severe acute respiratory syndrome. These data suggest that CKLF1 may play an important role in the pathogenesis of these important diseases and the study also implies that gene electro-transfer in vivo could serve as a valuable approach for evaluating the function of a novel gene in animals.     

盐酸帕洛诺司琼与盐酸托烷司琼在乳腺癌化疗中的止吐疗效观察

目的:观察盐酸帕洛诺司琼与盐酸托烷司琼预防由乳腺癌TEC方案辅助化疗所引起的恶心、呕吐反应的效果。方法:60例(淋巴结转移的)乳腺癌改良根治术后患者,术后统一使用TEC方案(多西他赛、表柔比星、氟尿嘧啶)化疗,采用随机自身对照交叉设计方法,将60例病人随机分为2组,盐酸帕洛诺司琼组(化疗前使用盐酸帕洛诺司琼0.25 mg止吐,第2周期使用盐酸托烷司琼5mg止吐)和盐酸托烷司琼组(化疗前使用盐酸托烷司琼5mg止吐,第2周期使用盐酸帕洛诺司琼0.25mg止吐),观察72 h内病人的恶心、呕吐发生率并作统计学分析。结果:使用盐酸帕洛诺司琼止吐时,急性呕吐发生数为0度33例,I度20例,II度6例,III度1例,IV度0例;使用盐酸托烷司琼止吐时,急性呕吐为0度28例,I度17例,II度12例,III度2例,IV度1例,两组差异无统计学意义。使用盐酸帕洛诺司琼止吐时,迟发性呕吐发生数为0度31例,I度26例,II度2例,III度1例,IV度0例;使用盐酸托烷司琼止吐迟发性呕吐发生数为0度19例,I度22例,II度12例,III度6例,IV度1例,两组差异有统计学意义。两组在防治恶心方面无显著性差异。结论:盐酸帕洛诺司琼能有效控制TEC方案化疗所引起的呕吐,是理想的长效止吐药物。     

十二指肠球部溃疡患者红细胞免疫活性的变化

目的 :探讨十二指肠球部溃疡与红细胞天然免疫功能的关系。方法 :对 5 6例十二指肠球部溃疡患者采用免疫粘附酵母菌花环法和肿瘤红细胞花环试验测定其红细胞CR1活性。结果 :十二指肠球部溃疡患者与正常人相比 ,红细胞C3b受体花环率 (RBC C3bRR)、红细胞粘附肿瘤花环率 (RBC TRR)明显降低 (P <0 .0 5 ) ,红细胞免疫复合物花环率 (RBC ICR)明显增高 (P <0 .0 5 )。结论 :十二指肠球部溃疡患者红细胞免疫功能属继发性低下 ,红细胞免疫可能参与了十二指肠球部溃疡发生 ,加强红细胞天然免疫功能对于防治十二指肠球部溃疡可能有重要意义