类风湿关节炎中西医结合分型施治64例分析

类风湿关节炎是一种以关节病变为主的慢性全身免疫性疾病,属于祖国医学痹证范畴。对本病64例以扶正活血可具体分为三型。主要治疗原则(1)肝肾阳虚:治以湿补肝肾、活血化瘀;(2)肝肾阴虚:治以滋养肝肾、活血化瘀;(3)脾胃虚弱:治以键脾益气活血化瘀。本组病例临床治愈23例、占36%,显效19例占29.7%,有效18例、占28.1,无效4例、占6.25,总有效率93.75。     

基于网络药理学及动物实验探讨瑞香狼毒治疗RA作用机制

为探讨瑞香狼毒(Stellera chamaejasme L.)治疗类风湿性关节炎(rheumatoid arthritis,RA)的潜在机制,利用TCMSP、PubMed及TCMID数据库和文献挖掘获得瑞香狼毒主要化学成分,利用Swiss Target Prediction、Uniprot数据库获得瑞香狼毒治疗疾病靶点,运用OMIM、GeneCards及PharmGKB数据库获取RA主要作用靶点,通过对化学成分靶点与疾病基因进行交集整合,筛选瑞香狼毒治疗RA的潜在治疗靶点.使用Cytoscape 3.6.1 软件构建“药物-活性成分-靶点-疾病”相互作用网络图,将潜在治疗靶点用DAVID软件分析预测相关的生物学过程,并通过动物实验对主要生物学过程进行验证.采用ELISA检测瑞香狼毒对RA模型大鼠血清炎症因子的影响,该研究共筛选出瑞香狼毒60个活性成分,5 017个与RA潜在治疗靶点及380个交集靶点;动物实验结果表明,瑞香狼毒可以通过抑制炎症因子肿瘤坏死因子(TNF-α)、白介素-6(IL-6)、白介素-1β(IL-1β)表达以发挥抗RA作用.该研究揭示了网络药理学预测并指导实验设计的合理性,证实瑞香狼毒可以通过抑制炎症因子以发挥抗RA作用,为瑞香狼毒治疗RA的机制研究提供依据.     

Direct determination of selenium in whole blood by anodic stripping voltammetry

Trace quantities of selenium can be determined in the presence of iron, copper and lead using anodic stripping voltammetry, depositing at –0.60 V in 0.1M HClO₄ and stripping in the anodic direction. Two separate peaks are observed at –0.25 V and –0.10 V belonging to copper and selenium, respectively. Sometimes one peak may be observed for both copper and selenium. In this case one more stripping (without deposition) must be done to obtain separate peaks. After standard addition, two strippings have to be done also. With this proposed method, 10^–7 M selenium could be determined as (1.09±0.03) × 10^–7 M with a 90% confidence interval in blood samples without any separation.Presented at Xth National Chemistry Congress, Bursa, Turkey, September 19–21, 1994     

Simultaneous determination of leflunomide and its active metabolite,A77 1726, in human plasma by high-performance liquid chromatography

The isoxazol derivative leflunomide [N-(4'-trifluoromethylphenyl)-5-methylisoxazole-4-carboxamide] is an inhibitor of de novo pyrimidine synthesis used for the treatment of rheumatoid artrithis. In the present study, a liquid-liquid extraction-based reversed-phase HPLC method with UV detection was validated and applied for the analysis of leflunomide and its active metabolite, A77 1726, in human plasma. The analytes were separated using a mobile phase, consisting of acetonitrile, water and formic acid (40/59.8/0.2, v/v), at a flow rate of 0.5 mL/min, and UV detection at 261 nm. The retention times for A77 1726, leflunomide and warfarin (internal standard) were 8.2, 16.2 and 12.2 min, respectively. The validated quantification range of the method was 0.05-100 micro g/mL for leflunomide and 0.1-100 micro g/mL for A77 1726. The developed procedure was applied to assess steady-state plasma concentrations of A77 1726 in patients with rheumatoid arthritis treated with 10 or 20 mg leflunomide per day.     

Improved wrist pannus volume measurement from contrast-enhanced MRI in rheumatoid arthritis using shuffle transform

BACKGROUND: Contrast-enhanced MRI is of value in assessing rheumatoid pannus in the hand, but the images are not always easy to quantitate. OBJECTIVE: To develop and evaluate an improved measurement of volume of enhancing pannus (VEP) in the hand in human rheumatoid arthritis (RA). METHODS: MR images of the hand and wrist were obtained for 14 patients with RA at 0, 1 and 13 weeks. Volume of enhancing pannus was measured on images created by subtracting precontrast T1-weighted images from contrast-enhanced T1-weighted images using a shuffle transformation technique. Maximum intensity projection (MIP) and 3D volume rendering of the images were used as a guide to identify the pannus and any contrast-enhanced veins. RESULT: Visualisation of pannus was much improved following the shuffle transform. Between 0 weeks and 1 week, the mean value of the within-subject coefficient of variation (CoV) was 0.13 and the estimated total CoV was 0.15. There was no evidence of significant increased variability within the 13-week interval for the complete sample of patients. CONCLUSION: Volume of enhancing pannus can be measured reproducibly in the rheumatoid hand using 3D contrast-enhanced MRI and shuffle transform.     

Label-free Electrochemical Immunosensor for Sensitive Detection of Rheumatoid Arthritis Biomarker Anti-CCP-ab

The accurate and sensitive analysis of rheumatoid arthritis(RA) trace biomarkers is essential for early warning and diagnosis of RA, while anti-cyclic citrullinated peptide antibody (anti-CCP-ab) is a specific one. In this study, a simple label-free electrochemical immunosensor for the detection of anti-CCP-ab was constructed with nitrogen-doped graphene (N−G) and gold nanoparticles (AuNPs). The proposed non-enzyme immunosensor had exhibited high specificity, selectivity, and stability in the linear calibration curve range from 0.125∼2000 pg mL-1 and has been successfully used in the detection of anti-CCP-ab in human serum, providing a new idea for the early diagnosis of RA.     

雷公藤治疗老年性类风湿性关节炎临床实验研究

试验用雷公藤治疗老年性类风湿性关节炎。治疗效果表明,55例近期总有效率达98．18％,且尚可作为皮质激素的良好替代药物;雷公藤副作用轻微,与同期中青年组比较,无显著性差异（P＞0．05）,表明短期使用雷公藤治疗老年性类风湿关节炎是安全有效的。     

基于气相色谱-飞行时间质谱技术的佐剂性关节炎大鼠尿液代谢组学的研究

采用弗氏完全佐剂(FCA)诱导佐剂性关节炎(AA)大鼠模型,观察大鼠足趾肿胀度和踝关节组织的病理学形态变化。应用气相色谱-飞行时间质谱(GC-TOF MS)技术检测AA大鼠尿液代谢物谱,并对数据进行主成分分析(PCA)、偏最小二乘法-判别分析(PLS-DA)及正交偏最小二乘法-判别分析(OPLS-DA),探讨可能的发病机制。通过变量重要性投影值(VIP>1)和P值(<0.05),筛选出尿液中的差异代谢物。在模型组大鼠的尿液中共发现异柠檬酸、α-酮戊二酸、柠康酸、肌酸、3-羟基丁酸等20种差异代谢物。推断AA代谢组学的发病机制可能与能量代谢、氨基酸代谢、脂肪酸代谢途径有关。     

厚藤提取物对胶原诱导关节炎模型大鼠的治疗作用研究

为探究厚藤(Ipomoea pes-caprae)提取物对胶原诱导关节炎(Collagen-induced Arthritis,CIA)模型大鼠的治疗作用,本研究采用牛Ⅱ型胶原诱导建立CIA大鼠模型,观察厚藤提取物高、中、低剂量组(2.2712,1.1356,0.5678 g/kg)对CIA大鼠踝关节肿胀、足跖肿胀、关...