CIK的体外增殖及体内外杀瘤活性的实验研究

目的:从人骨髓造血前体细胞体外培养扩增树突状细胞(dendritic cells,DCs),测定其表型及T细胞刺激活性.方法:采用Mini-MACS分离技术,从正常人骨髓、脐血分离CD34~ 造血干细胞,体外以重组hGM-CSF,hTNF-α,hIL-3诱导培养2周,流式细胞术检测扩增细胞的表面表型及细胞内IL-12的表达,体外同种混合淋巴细胞反应检测扩增DCs的T细胞刺激活性.结果:从正常人骨髓、脐血分离得到高纯度(>90%)的CD34~ 造血干细胞,经重组hGM-CSF,hTNF-α的共同诱导培养,扩增得到大量DCs,加人hIL-3可以进一步增加DCs产量;FACS检测表明,扩增的DCs表达HLA-DR,CD40,CD54,CD80,CD86分子,细胞内有hIL-12的P35,P40亚基的表达;与外周血单核细胞培养生成的DCs相比,由CD34~ 干细胞扩增的DCs具有更强的激发同种T细胞增殖的能力.结论:人CD34~ 干细胞体外经诱导培养,可以生成大量功能成熟的DCs,从而为进一步开展DCs的基础及临床研究打下了基础.     

螺旋CT三维重建在颅底病变的应用

目的：探讨螺旋ＣＴ３Ｄ重建的临床应用价值和重建技术。方法：３０例中男性１８例,女性１２例,均经手术和病理证实。均用螺旋ＣＴ扫描,层厚３～５ｍｍ床进速度为３～５ｍｍ／ｓ,薄层重建１～３ｍｍ,颅内肿瘤均行增强扫描。３Ｄ重建在独立诊断台上进行,选择重建时的合适阈值,颅骨１００～２００Ｈｕ,肿瘤８０～１００Ｈｕ,分别进行颅骨、肿瘤及血管的３Ｄ重建并用假彩色技术处理,使用不同的旋转轴观察病变,测量肿瘤在三维空间的距离、角度和体积。结果：全部病例都能清楚显示病变的立体解剖图像及其与周围关系,显示瘤体与血管关系者２２例。结论：３ＤＣＴ简化了观察者的思维过程,可直观地了解病变在三维立体空间的实际大小、形态、位置及周围组织结构的立体解剖关系,为制订手术方案和放疗计划提供了客观依据。并可用于形象化教学。     

左西孟旦治疗重症冠心病所致心衰的临床疗效

  目的  重症冠心病所致心衰患者在使用左西孟旦后的疗效及其安全性分析。  方法  选择2018年1月至2020年1月期间于昆明医科大学第一附属医院住院治疗的40例冠脉弥漫性病变重症患者，基于行左西孟旦干预与否，划分出对照组（n = 20）、实验组（n = 20）。两组对象入院后皆接受抗心力衰竭（HF）常规药物干预，实验组同时结合左西孟旦应用。对两组对象药物干预后心功能参数、不良反应、心肌酶学、肝肾功能、BNP进行收集分析。  结果  对经过相应治疗后的两组展开对比分析，发现实验组心功能参数增幅明显，且相比对照组（P < 0.05），即差异有统计学意义；另实验组BNP与心肌酶学参数皆明显偏低（P < 0.05）；在干预后肝肾功能水平上，对比两组结果为（P > 0.05），即未见明显区别；在治疗期间不良反应发生率方面，对比两组发现差异无统计学意义。  结论  左西孟旦的应用，可在一定程度上改善重症冠心病患者的心衰表现与心功能，且不会影响伤及肝肾功能，不良反应少，具备临床大量应用价值。     

Evidence-based recommendations for the management of ankylosing spondylitis: systematic literature search of the 3E Initiative in Rheumatology involving a broad panel of experts and practising rheumatologists

Objective. Recommendations and/or guidelines represent a popularway of integrating evidence-based medicine into clinical practice.The 3E Initiatives is a multi-national effort to develop recommendationsfor the management of rheumatic diseases, which involves a largenumber of experts combined with practising rheumatologists addressingspecific questions relevant to clinical practice. Methods. Ten countries participated in three rounds of discussionsand votes concerning the management of AS. A set of nine questionswas formulated in the domains of diagnosis, monitoring and treatment,after a Delphi procedure. A literature search in MedLine wasconducted. Predefined outcome parameters for the domains ofdiagnosis, monitoring and treatment were assessed. The evidenceto support each proposition was evaluated and scored. Afterdiscussion and votes, the final recommendations were presentedusing brief statements by each national group, following whichthe final international recommendations were formulated. Results. A total of 2699 papers were found and 467 were selectedfor analysis. Twelve key recommendations were developed: threein the domain of diagnosis addressing general diagnostic considerations,early AS diagnosis and general practitioners’ referralrecommendations; three concerning monitoring of AS disease activity,severity and prognosis; six concerning pharmacological treatment(except biologics): non-steroidal anti-inflammatory drugs/COX-IIinhibitors, bisphosphonates and treatment of enthesitis. Thecompiled agreement among experts ranged from 72% to 93%. Conclusion. Recommendations for the management of AS were developedusing an evidence-based approach followed by expert/physicianconsensus with high level of agreement. Involvement of a largerand more representative group of rheumatologists may improvetheir dissemination and implementation in daily clinical practice. KEY WORDS: Ankylosing spondylitis, Systemic literature search, Recommendations, Non-steroidal anti-inflammatory drugs, COX-II inhibitors, Monitoring, Diagnosis, Treatment     

Diabetes enhances lipopolysaccharide-induced cardiac toxicity in the mouse model

Diabetic patients have a higher rate of mortality from sepsis than do their nondiabetic septic counterparts. The hypothesis in this study is that chronic diabetes may make cardiovascular systems more sensitive to septicemia. To test this hypothesis, the authors investigated the effect of diabetes on endotoxin-induced cardiac toxicity. Diabetes was induced in FVB mice by injecting a single dose (150 mg/kg) of streptozotocin. Two months after streptozotocin treatment, the diabetic mice were treated with lipopolysaccharide by intraperitoneal injection at 2 mg/kg. Cardiac toxicity was evaluated by measuring levels of serum cardiac enzymes and cardiac morphology at 1 h, 4.5 h, and 24 h after lipopolysaccharide treatment. Serum and cardiac tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) were detected by enzyme-linked immunosorbent assay methods at 1 h and 4.5 h after lipopolysaccharide treatment. Lipopolysaccharide treatment did not significantly affect the diabetic manifestations, including decreased body weight gain and increased glycated hemoglobin and serum triglyceride levels. However, diabetes significantly enhanced lipopolysaccharide-induced cardiac toxicity, which was demonstrated by significant increases in the levels of cardiac enzymes such as creatine phosphokinase and troponin T, abnormal morphological changes examined under light microscope with hematoxylin and eosin staining, and oxidative damage to proteins detected by 3-nitrotyrosine staining. Lipopolysaccharide treatment significantly increased serum and cardiac TNF-α and IL-6 concentrations. Diabetes did not alter the effect of lipopolysaccharide on serum and cardiac TNF-α elevation, but it significantly enhanced lipopolysaccharide-induced cardiac IL-6 production. These results suggest that diabetes significantly enhances endotoxin-induced cardiac toxicity, possibly through mechanisms that involve inflammatory/acute-phase cytokines.     

Development of web-based diabetic patient management system using short message service (SMS)

We developed a blood glucose management system using the Internet and short message service (SMS) which can lessen the social economic burden and materialize an individualized diabetes mellitus management. A total of 185 diabetic patients participated in this study and their mean age was 42.4 years old (8-79 year-old). Participants sent their self-measured blood glucose levels, medication and its dosages, amount of meal, and degree of exercise to their health providers in this specialized web-based diabetes management system for 3 months. The health providers consisting of endocrinology specialists, dietitians, and nurses sent recommendations for individualized diabetes management according to the data on the web. Laboratory tests including lipid profiles and glycated hemoglobin (HbA1c), and a survey of satisfaction about this system were performed before and after the study period. The mean HbA1c improved from 7.5 +/- 1.5 to 7.0 +/- 1.1% after using the management program (P = 0.003). The mean serum triglyceride and HDL-cholesterol levels turned for the better also. HbA1c improved from 8.4 +/- 1.2 to 7.5 +/- 1.0% after applying this program to patients with the HbA1c of 7% or higher at baseline (P = 0.010). We propose this web-based diabetic patient management system as a new tool for communication between health care providers and patients.     

家兔对小鼠抗血吸虫靶抗原单克隆抗体的抗抗体应答

本文报告从分泌具血吸虫保护性IgG_(2a)表型1E2McAb的杂交瘤培养上清液中,应用蛋白A-葡聚糖柱层析法纯化的McAb免疫家兔,采用纯化McAb分别进行Dot-ELISA、免疫双扩散和免疫印迹试验、ELISA观察免疫血清中抗McAb和抗-抗McAb的产生及其动态变化规律。主要结果表明:(1)1E2McAb免疫后,20d开始出现抗McAb,若不加强免疫,抗McAb逐渐减弱:若加强免疫,则抗McAb水平较高,且持续30-50d。(2)免疫血清中的抗-抗McAb,能起抗-抗Id的作用,可识别不同的血吸虫抗原及血吸虫抗原中不同抗原决定簇(90,68和45kD_a),而且免疫后不同时期抗-抗McAb识别不同抗原的水平不同(滴度1:100-1:1600)。对抗血吸虫肥抗原McAb免疫后抗抗体应答的观察,可为研制不同抗独特型McAb创造条件。     

对老年高血压病患者手术前后部分血小板活化功能的探讨

目的　观察手术对老年高血压病患者血小板活化功能的影响。方法　选择 110例老年择期手术患者 ,按有无高血压病分成高血压病组和对照组 ,分别于手术前和手术后 30min抽肘静脉血送实验室 ,用流式细胞分析仪测定CD6 2P、CD6 3、CD4 1含量。结果　术前高血压病组患者的CD6 2P、CD6 3、CD4 1较对照组明显增高 ,差异有显著性意义(P <0 .0 5 ) ;术后 2组患者的CD6 2P、CD6 3、CD4 1较术前均明显增高 ,其中高血压病组更高 ,差异有显著性意义 (P<0 .0 1)。结论　手术更易激活老年高血压病患者的血小板功能 ,增加血栓性并发症的发生率 ,应注意围手术期的抗凝措施。     

Nutritional and nutraceutical characteristics of Sageretia theezans fruit

The fruit of Sageretia theezans is one of many underutilized edible fruits that grow along the southern seashores of East Asia. In this study, to evaluate the nutritional and nutraceutical values of S. theezans fruit, the composition of minerals, organic acids, and proximate and fatty acids, the total phenolic, total flavonoid, and total anthocyanin content, and the antioxidant and antidiabetic activities of S. theezans fruit were analyzed. The results indicate that S. theezans fruit could be classified as a potential potassium-, malic acid-, and linoleic/oleic acid-rich fruit. In addition, The ethyl acetate (EtOAc) fraction of the 70% ethanol (EtOH) crude extract exhibited strong antioxidant activities including free radical scavenging and reducing power activities compared with the same concentration of butylated hydroxytoluene. Furthermore, the EtOAc fraction showed significant inhibition of α-glucosidase activity. The analysis of the total phenolic and flavonoid content suggested that the remarkable antioxidant and antidiabetic activities of the EtOAc fraction are due to the presence of high levels of polyphenolic compounds.