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| 1 | 肝素钠注射液对过敏性紫癜患儿的肾保护作用显示文摘目的探讨肝素对过敏性紫癜(HSP)患儿肾保护作用。方法用放射免疫法检测和比较110例肝素治疗组(男64例,女46例)和105例对照组(男61例,女44例)HSP患儿治疗前后血清IL-6、8水平;并随访6个月。结果1.治疗前肝素组与对照组IL-6、8水平无差异;治疗后肝素组IL-6、8水平较对照组均明显降低,差异有显著性[IL-6(116.50±19.45)vs(123.88±22.55)ng/L,t=2.573P=0.011;IL-8(0.161±0.043)vs(0.173±0.048)μg/L,t=2.024P=0.044]。2.随访6个月后,肝素组紫癜性肾炎发生率(25%)较对照组(39.8%)明显降低(χ2=5.061P=0.024);肝素组发生肾受累的时间(35.0±13.2)d较普通组(26.0±12.1)d明显延迟(t=2.659P=0.010)。结论肝素可降低HSP患儿血清IL-6、8水平,且能降低肾受累的发生率,并延迟发生肾损伤的时间。 | 刘翠华 刘玉峰 | 2007 | 实用儿科临床杂志2007,22,2: | 18 |
| 2 | TNBS诱发大鼠结肠炎中三叶因子3的表达显示文摘目的:研究三叶因子3(trefoil factor 3,TFF3)基因在三硝基苯磺酸(TNBS)诱发的大鼠结肠炎肠黏膜表达的变化,探讨其在结肠炎发生发展中的作用. 方法:采用TNBS/乙醇灌肠制作大鼠结肠炎模型(n=15), 观察大鼠腹泻、便血情况,评价疾病活动性指数(DAI)并记录体重改变,分别于制模后1,7及14d处死大鼠.生理盐水灌肠作为正常对照组.大体及镜下观察肠黏膜损伤及组织学变化,并进行评分.生化法检测MPO活性.逆转录-多聚酶链反应(RT-PCR)检测TFF3基因表达. 结果:结肠炎组1,7及14d时间点DAI(3.8±0.5 vs 0, 3.3±0.5 vs 0,2.3±0.5 vs 0)、体质量(-3.2±0.7 vs 4.7±2.2, -7.2±2.0 vs 10.9±0.2,2.9±0.4 vs 30.5±2.9)、大体评分(7.2±0.9 vs 0,6.2±1.3 vs 0,4.6±0.5 vs 0)和组织学评分(8.2±1.2 vs 0,10.4±0.5 vs 0,8.4±0.5 vs 0)以及MPO活性(1745±55 vs 303±21,1789±77 vs 315±20,1736±127 vs 313±35)较正常对照组均存在显著差异(P<0.05).TFF3在结肠组织炎症的各个时间点均有表达,致炎后1d组较正常对照组减少,7和14 d组明显升高(0.63±0.05 vs 0.72±0.02, 0.94±0.19 vs 0.72±0.02.1.25±0.74 vs 0.72±0.02.P<0.05). 结论:TNBS诱发的大鼠结肠炎有TFF3基因的表达,提示TFF3在结肠炎黏膜损伤修复中发挥作用. | 宋敏 李瑾 夏冰 | 2004 | 世界华人消化杂志2004,12,9: | 2 |
| 3 | 丁酸钠与5-氨基水杨酸联合用药对大鼠结肠炎治疗作用及机制显示文摘目的通过观察联合应用丁酸钠(NaB)与5-氨基水杨酸(5-ASA)灌肠治疗对三硝基苯磺酸(TNBS)诱发的大鼠结肠炎三叶因子3(TFF3)、白细胞介素(IL)-1β及核因子(NF)-kB 表达的影响,阐明NaB 和5-ASA 治疗溃疡性结肠炎的分子机制。方法 40只 Wistar 大鼠均分为4组。采用 TNBS/乙醇灌肠制作大鼠结肠炎模型。制模后第3天,各组分别给予不同处理。A 组给予0.9%氯化钠溶液1ml 灌肠;B 组给予5-ASA 1ml 灌肠(100mg/kg);C 组给予 NaB 1ml 灌肠(80mmol/L,pH 7.0);D 组给予5-ASA 与NaB 各1ml 联合灌肠处理。每天1次,观察大鼠腹泻、便血情况,评价疾病活动指数(DAI),并记录体重改变。分别于制模后第1及第2周,抽取每组大鼠各5只,心脏取血,放射免疫分析(RIA)测定血清 IL-1β浓度。大体及镜下观察肠黏膜损伤及组织学变化并进行评分。同时取结肠病变部位组织,生化法检测髓过氧化物酶(MPO)活性,逆转录-聚合酶链反应检测 TFF3基因表达变化,免疫组化法分析 NF-kB 的组织表达。结果与 A 组比较,用药组 DAI、结肠黏膜大体和组织学损伤评分及 MPO 活性均降低(P<0.05),TFF3表达水平升高(1.98±0.02比1.11±0.06,2.66±0.02比1.25±0.07,P<0.05),促炎因子IL-1β及 NF-kB 水平降低(P<0.05)。还观察到联合应用 NaB 与5-ASA 灌肠的效果优于单独应用 NaB 或5-ASA(P<0.05)。结论联合应用 NaB 与5-ASA 对 TNBS 诱发的大鼠结肠炎有良好的治疗作用,其作用机制与增强 TFF3基因表达、抑制 IL-1β及 NF-kB 表达有关。 | 宋敏 李瑾 夏冰 | 2005 | 中华消化杂志2005,25,10: | 2 |
| 4 | 关节炎与低分子肝素在治疗关节炎中的应用显示文摘本文综合国内外相关文献,介绍骨关节炎和类风湿性关节炎及低分子肝素在治疗关节炎中的应用。 | 张丽娜 凌沛学 娄红祥 张天民 | 2006 | 食品与药品2006,8,10A: | 0 |
| 5 | 硫酸皮肤素衍生物对炎性肠病患者血小板表面分子的影响显示文摘目的研究硫酸皮肤素(DS)衍生物对炎性肠病(IBD)患者血小板表面P-选择素及活性蛋白C(APC)的影响。方法用氯磺酸磺化制备多硫酸化DS(PSDS)。测定其1H-NMR和13C-NMR光谱确定主要双糖单位。用过氧化氢降解DS和PSDS,所得片段用凝胶过滤色谱分离。用ELISA法测定DS衍生物对血小板表面P-选择素的影响,用底物显色法测定其对APC活性的影响。结果组成DS和PSDS链的主要双糖单位分别为IdoA-1→3-GalNAc-4-SO3和IdoA-2SO3-1→3-GalNAc4,6-diSO3。与二磷酸腺苷(ADP)组和IBD组相比,DS及其衍生物都具有抑制P-选择素表达的作用(P<0.01),但DS寡糖(DSOSs)和PSDS寡糖(PSDSOSs)没有差别。APC活性实验表明,DS及其衍生物均能提高APC活性。活性最强的DSOS是相对分子质量(Mr)为4 825的寡糖,APC活性由106.5%±11.5%升高到181.8%±22.3%(P<0.01)。随着Mr降低,DSOSs活性逐渐降低。PSDS提高APC活性的作用显著强于DS,使APC活性提高到205.2%±22.1%(P<0.01)。所有的PSDSOSs的活性都强于具有相当Mr的DSOSs活性。随着Mr降低PSDSOSs活性逐渐增强,活性最强的是Mr为2 749的PSDSOS3,APC活性提高到331.2%±27.8%(P<0.01),然后其活性逐渐降低。结论所有DS及其衍生物都有显著抑制血小板表面P-选择素表达的作用,但这种作用与DSMr分子量和硫酸化程度无关。DS及其衍生物对APC的作用在分子水平上具有复杂的机制,与DS的Mr、硫酸化程度以及非均一性成分有关。Mr相同时,DS硫酸化程度越高,APC活性提高作用越强。 | 姬胜利 张云峰 杜海燕 迟延青 崔慧斐 曹吉超 | 2008 | 食品与药品2008,10,2: | 0 |
| 6 | Effects of dermatan sulfate derivatives on platelet surface P-selectin expression and protein C activity in blood of inflammatory bowel disease patients显示文摘AIM: To investigate the effect of derrnatan sulfate (DS) derivatives on platelet surface P-selectin expression and blood activated protein C (APC) activity in patients with inflammatory bowel disease (IBD), and to clarity the antiinflammatory mechanism of DS derivatives.METHODS: Derrnatan sulfate (DS) was sulfated with chlorosulfonic acid to prepare polysulfated derrnatan sulfate (PSDS). The major disaccharides of DS and PSDS were determined by 1H nuclear magnetic resonance spectroscopy (^1H-NMR) and ^13NMR. Both DS and PSDS were depolymerized with hydrogen peroxide. The fragments were separated by gel filtration chromatography. The effects of DS derivatives on P-selectin expression were assayed by ELISA method,and blood APC activity was assayed by the synthetic chrornogenic substrate method.RESULTS: The major disaccharides of DS and PSDS were IdoA-1→3-GalNAc-4-SO3 and IdoA-2SO3-1→3-GalNAc4, 6diSO3, respectively. Compared with the adenosine diphosphate stimulated group and IBD control group, DS and its derivatives all had significant inhibitory effects on P-selectin expression (P<0.01), but there was no difference between DS-derived oligosaccharides (DSOSs) and PSDS-derived oligosaccharides (PSDSOSs). The experiments on APC activity showed that DS and its derivatives all enhanced APC activity. The most active DSOS was the one with a relative molecular weight (Mr) of 4 825, which enhanced the APC activity from106.5±11.5% to 181.8±22.3% (P<0.01). With the decreaseof Mr, the activity of DSOSs decreased gradually. The effect of PSDS on APC activity enhancement was more significant than that of DS, and the APC activity was raised to 205.2±22.1% (P<0.01). All the PSDSOSs were more active than DSOSs on the basis of comparable Mr. With the decrease of Mr, the activity of PSDSOSs increased gradually, and the most active PSDSOS was PSDSOS3 with Mr of 2 749, which enhanced the APC activity to 331.2:1:27.8% (P<0.01), then the activity of PSDSOSs decreased gradually.CONCLUSION: DS and its derivatives can significantly inhibit P-selectin expression on platelet surface, but the effect has no correlation with DS molecular mass and sulfation.The effect of DS or its derivatives on APC activity at molecular level involves complex mechanisms that depend on the molecular mass, the degree of sulfation, and the heterogeneous composition of DS. On the same molecular size, the higher the degree of DS sulfation, the more significant the effect on enhancing APC activity. | Sheng-LiJi Hai-YanDu Yan-QingChi Hui-FeiCui Ji-ChaoCao Mei-YuGeng Hua-ShiGuan | 2004 | World Journal of Gastroenterology2004,10,23: | 0 |
| 7 | 肝素及其衍生物与哮喘的关系显示文摘目的探讨肝素及其衍生物与哮喘的关系。方法查阅国内外相关文献,进行分析、归纳。结果肝素及其衍生物对白介素分泌、肥大细胞脱颗粒、白细胞向炎症部位聚集均有抑制作用,并能降低气道的高反应性。结论肝素及其衍生物有望成为新型治疗哮喘的药物。 | 王潇 姬胜利 | 2005 | 食品与药品2005,7,07A: | 0 |