猪辅助性带胰头及十二指肠肝肠联合移植的研究

目的介绍猪辅助性带胰头及十二指肠的肝肠联合移植(LSBT)模型技术及其免疫抑制治疗。方法40头杂交长白猪分为两组,每组20头,组内进行辅助性带胰头及十二指肠的LSBT10次。其中A组未用免疫抑制剂治疗,B组采用环孢素A和甲基强的松龙治疗。结果A组动物术后成活时间为(10.33±1.93)d(7~25d),B组全部动物成活超过30d。在没有应用体外转流的情况下,可以耐受血液动力学的波动,血液动力学指标(B组)可以在血流再通后2h恢复正常。B组猪术后血液、尿液和腹腔引流液中的淀粉酶一过性升高,但在1周后回落到术前水平,活检没有发现严重胰腺炎。结论猪辅助性带胰头和十二指肠的LSBT是一种可行的、安全的移植模型,这一模型可以简化传统肝肠移植的技术,应用环孢素A和甲强龙可以有效的抑制猪肝肠移植后急性排斥反应。国家自然科学基金资助项目(39070828

Studies on degradation mechanism of niclosamide ethanolamine salt Ⅰ Determination of niclosamide ethanolamine salt in photolysis solution

目的了解氯硝柳胺乙醇胺盐(nES)在水体中的光解规律。方法实验室配置PH5的0.05μg/Ml、PH7的0.5μg/Ml和PH9的2.5μg/MlnES溶液,采用氙灯光源作为模拟日光照射,照射后0、0.5、1、2、4、8、16、24、48、72、96H采集光解液,高效液相色谱法测定光解液中nES含量,同时设无光照对照试验,计算其半衰期。结果在氙灯光光照条件下,nES快速降解,8H3种PH值的nES溶液下降率分别为83.4%、78.8%和41.3%,24H下降率分别为92.1%、88.5%和95.8%。nESPH5半衰期为8.98H,PH7为10.34H,PH9为9.16H;无光照条件下放置12d溶液浓度稳定。结论nES可在水中快速光解。Objective To understand the photolysis mechanism of niclosamide ethanolamine salt(NES) in water body.Methods NES was formulated into solutions of pH 5(0.05 μg/ml),7(0.5 μg/ml) and 9(2.5 μg/ml),respectively.The xenon gas lamp was used as the simulated sunlight.After 0,0.5,1,2,4,8,16,24,48,72,96 h of the illumination,the photolysis solutions were collected to determine the amount of NES by using the high-performance liquid chromatography method(HPLC),and the experiment without illumination was also set as the control.The half-life was calculated.Results Under the illumination of xenon gas lamp,the NES degraded rapidly.The degradation rates were 83.4%,78.8% and 41.3%,respectively for 8 h,and 92.1%,88.5% and 95.8%,respectively for 24 h.The half-life of NES was 8.98 h for pH 5,10.34 h for pH 7,9.16 h for pH 9.The solution could keep stable for 12 d without illumination.Conclusion Photolysis of NES can occur quickly in water.江苏省自然科学基金(BK200602

Studies on degradation mechanism of niclosamide ethanolamine salt Ⅱ Isotopic tracing and determination of photolysis end-product

目的观察同位素示踪技术解析氯硝柳胺乙醇胺盐(nES)在水体中的稳定性及测定光解终产物CO2的变化。方法实验室配制PH5的0.05μg/Ml、PH7的0.5μg/Ml和PH9的2.5μg/MlnES溶液,采用氙灯光源作为模拟日光照射上述nES溶液,照射8、16、24、32、40、48H和72H后,分别测定nES溶液在光解管顶的气态样品,采用gASbEnCHⅡ进样针插入直接分析;液体样品则取2.5Ml注入用高纯氦吹过的密封顶空样品瓶中,用加酸泵滴加无水磷酸,30℃超声反应1H,再插入gASbEnCHⅡ进样针进行分析;与dElTAPluS/XP稳定同位素质谱仪联用测定光解产物CO2的量及碳稳定同位素。结果在氙灯光光照条件下,PH70.5μg/Ml和PH92.5μg/MlnES溶液的光解,随光照时间的增加,CO2的量也增加,并呈线性增长,72H时其产量接近nES的实际产量。同位素结果显示,随光照时间的增加,CO2的碳同位素值逐渐变负,72H时接近nES原药的碳同位素值,为-25.36±0.11,光降解已接近完全。而PH50.05μg/MlnES溶液的光解,随光照时间的增加,CO2的量也在增加,但其产量超出了nES的实际产量;同位素结果显示,随光照时间的增加,产出CO2的碳同位素值逐渐变负,但在光照16H后其产CO2的碳同位素值比nES的碳同位素值偏负。结论 nES能够在水中快速光解,终产物为CO2。Objective To analyze the stability of niclosamide ethanolamine salt(NES)in water and determine the changes of CO2,the photolysis end-product,by using the isotopic tracing technique.Methods NES was formulated into the solutions of pH 5(0.05 μg/ml),pH 7(0.5 μg/ml)and pH 9(2.5 μg/ml),respectively.The xenon gas lamp was used as the simulated sunlight.After 8,16,24,32,40,48,72 h of the illumination,the gas samples of the NES solution on the top of photolysis tube were determined by using direct insertion of GasBenchII needle.For liquid samples,2.5 ml NES solution was added into a sealed empty bottle,which was treated with high pure helium,and then anhydrous phosphoric acid was added.After ultrasonic reaction at 30 ℃ for 1 h,the GasBenchII needle was inserted for analysis.The amount of CO2 and carbon isotopic value were determined by using the GasBenchII needle combined with isotopic mass spectrometer.Results Under the illumination of xenon gas lamp,the NES solutions of pH 7 and pH 9 occurred photolysis,with the increase of illumination time,the amount of CO2 increased,showing a linear increase.At 72 h,its yield approximated to the active output of NES.The isotopic tracing results showed,with the increase of illumination time,the carbon isotope value of CO2 turned to be negative gradually,and approximately reached to the carbon isotope value(-25.36±0.11‰)of NES active ingredient at 72 h when the photolysis approximated to be completely finished.For the photolysis of pH 5 NES solution,with the increase of illumination time,the amount of CO2 increased,however,its output was more than the active output of NES.The isotopic tracing results showed,with the increase of illumination time,the carbon isotope value of CO2 turned to be negative gradually.However,after illumination for 16 h,the carbon isotope value of CO2 was more negative than that of NES.Conclusions The photolysis of NES can occur rapidly in water,and the end product is CO2.江苏省自然科学基金(BK200602);江苏省卫生厅项目(X200504

营养不良大鼠血浆小分子物质代谢组学的研究

目的：利用代谢组学方法检测能反应营养不良大鼠血浆小分子代谢物质，探讨代谢组学在营养不良研究中的应用。方法：实验分为营养不良组和对照组。对照组大鼠自由进食、饮水，营养不良组自由进水，每天给予该体质量大鼠所需食物的60％。造模成功后，收集大鼠血浆，用液质分析（LC—MS）方法检测并比较两组大鼠血浆小分子物质。结果：营养不良组大鼠与对照组相比，血浆中肉毒碱和色氨酸碎片含量增加，而甜菜碱、棕榈酰肉碱、亚麻酸、二十二碳六烯酸和花生四烯酸等含量均降低。结论：用LC—MS方法检测得到的小分子物质与大鼠营养不良相关。代谢组学可作为营养不良指标的筛选方法

湖泊水质信息系统研究与应用

本文在建立湖泊运动模型，不量平衡模型的基础上，对污染物浓度的扩散进行了计算机模拟并快速形成了符合ＧＩＳ数据结构的空间数据和属性数据；实现了专题自动分类及查询子系统并对武汉市东湖富营养化物质氮，磷和江西赤湖重金属物质铜污染进行了计算机计算实验，达到了实用的要求

湖泊水质信息系统研究与应用

本文在建立湖泊运动模型、水量平衡模型的基础上，对污染物浓度的扩散进行了计算机模拟并快速形成了符合ＧＩＳ数据结构的空间数据和属性数据；实现了专题自动分类及查询子系统并对武汉市东湖富营养化物质氮、磷和江西赤湖重金属物质铜污染进行了计算机计算实验，达到了实用的要求。这是将遥感技术、计算机图形技术、地理信息系统技术和环境监控技术有机结合的尝试，从而为综合治理湖泊提供了重要技术手