简介：FTY720,asphingosine1-phosphatereceptormodulator,inducesamarkeddecreaseinthenumberofperipheralbloodlymphocytesandexertsimmunomodulatingactivityinvariousexperimentalallograftandautoimmunediseasemodels.Inthisstudy,weevaluatedtheeffectofFTY720anditsactivemetabolite,(S)-enantiomerofFTY720-phosphate[(S)-FTY720-P]onexperimentalautoimmuneencephalomyelitis(EAE)inratsandmice.ProphylacticadministrationofFTY720at0.1to1mg/kgalmostcompletelypreventedthedevelopmentofEAE,andtherapeutictreatmentwithFTY720significantlyinhibitedtheprogressionofEAEandEAE-associatedhistologicalchangeinthespinalcordsofLEWratsinducedbyimmunizationwithmyelinbasicprotein.ConsistentwithratEAE,thedevelopmentofproteolipidprotein-inducedEAEinSJL/JmicewasalmostcompletelypreventedandinfiltrationofCD4+TcellsintospinalcordwasdecreasedbyprophylactictreatmentwithFTY720and(S)-FTY720-P.WhenFTY720or(S)-FTY720-PwasgivenafterestablishmentofEAEinSJL/Jmice,therelapseofEAEwasmarkedlyinhibitedascomparedwithinterferon-β,andtheareaofdemyelinationandtheinfiltrationofCD4+TcellsweredecreasedinspinalcordsofEAEmice.SimilartherapeuticeffectbyFTY720wasobtainedinmyelinoligodendrocyteglycoprotein-inducedEAEinC57BL/6mice.TheseresultsindicatethatFTY720exhibitsnotonlyaprophylacticbutalsoatherapeuticeffectonEAEinratsandmice,andthattheeffectofFTY720onEAEappearstobeduetoareductionoftheinfiltrationofmyelinantigen-specificCD4+Tcellsintotheinflammationsite.

简介：摘要目的探讨液相色谱限制性填料在临床药物分析中的应用。方法从限制性填料的萃取剂分离机制、RAM填料单柱系统及柱切换系统在体内药物分析中应用和RAM填料的新应用三个方面进行分析。结果简要介绍了限制性填料固相萃取原理及分类，并对该技术在临床药物分析及药代动力学领域中的应用现状及发展趋势作了详细的综述。结论限制性填料属于特殊萃取介质之一，允许复杂生物基质样品直接进样分析，结合液相色谱系统可以实现生物样品自动化直接进样，简化并加速了样品预处理过程。

简介：摘要目的探讨ISS患儿血清胰岛素样生长因子-1(IGF-1)、胰岛素样生长因子结合蛋白-3(IGFBP-3)检测的临床意义。方法30例ISS患儿和45名正常对照儿童，抽取空腹静脉血，采用化学发光法测定其血清IGF-1、IGF-BP3水平。结果ISS组患儿血清IGF-1、IGF-BP3水平明显低于正常对照组，差异有统计学意义。结论血清IGF-1、IGF-BP3水平可以作为青春期前ISS的参考诊断指标。