学科分类
/ 25
500 个结果
  • 简介:Inthisstudy,weinvestigatedthepreventiveeffectsofaprobioticpreparation(MiyaBM)containingClostridiumbutyricumsporesagainstthesideeffectsofHelicobacterpylorieradication.Theratswereadministeredomeprazole,amoxicillinandclarithromycin,whichcombinationofdrugswasanewtriple-therapyproposedforthefirstlinetherapybytheguidelineofthetreatmentofH.pyloriinfectioninJapan.ObligateanaerobesandLactobacillusweredecreasedmarkedly,whileaerobeswereincreasedafterthethreedrugsadministration.Moreover,Clostridiumdifficilecausativeofantibioticassociateddiarrheawasisolatedfromfecesafterthe7th.AdministrationofMiyaBMdecreasedthenumberofC.difficileinthefecesandincreasedtheshortchainfattyacidsintheintestinalcontents.

  • 标签: 预防作用 梭菌属 H.PYLORI 幽门螺杆菌 BM
  • 简介:Tamiflu(Oseltamivirphosphate)seemstobeadouble-edgedswordtosomeinAsia.Whileitiscountedonagainstinfluenzaandafearedavianinfluenzapandemic[1],thedrugisalsoassociatedwithsideeffects,rangingfromneu-ropsychiatric,gastrointestinal,tohyperthenniaandskinproblems.AccordingtoadocumentfromUSFoodandDrugAdministrationin2005[2],1184casesofsideeffectshavebeenreported.Interestingly69outofthe75pediatriccaseswerefromJapan,includingtwoteensuicides.Thesituationseemedtohavemadeagloomierturnrecently.ItwasreportedinFebruary,2007thattwoJapaneseteenagersjumpedfromapartmentbuildingsaftertakingTamifluanddied,bringingthetotalnumberofdeathsaftertakingTamiftuinJapanto54[3,4].Althoughnodirectcausalrelationshiphadbeenes-tablishedyet,theJapanHealthMinistrywarneddoctorsaboutgivingthedrugtoteenagers.Incomparison,relativelyfewcasesofseveresideeffectswerereportedfromAmericaandEuropeancountries[5].Whatiswrongwiththispicture?Ithasconcernedandbewilderedmany.Thepagesinthisissue[6]offeronefascinatinghypothesisthattriestoexplainthemysteryusinganintegratedapproachcombiningstructuralbioinformaticanalysisandenzymeassays.

  • 标签: 抗禽流感药物 达菲 药物副作用 亚洲人 单核苷酸多态性
  • 简介:AnovelnumericalmodelbasedontheimageGreenfunctionandfirst-orderTaylorexpansionboundaryelementmethod(TEBEM),whichcanimprovetheaccuracyofthehydrodynamicsimulationforthenon-smoothbody,wasdevelopedtocalculatethesidewalleffectsonfirst-ordermotionresponsesandsecond-orderdriftloadsuponoffshorestructuresinthewavetank.Thismodelwasconfirmedbycomparingittotheresultsfromexperimentsonhydrodynamiccoefficients,namelythefirst-ordermotionresponseandsecond-orderdriftloaduponahemisphere,prolatespheroid,andbox-shapedbargeinthewavetank.Then,thehydrodynamicsoftheKVLCC2modelwerealsocalculatedintwowavetankswithdifferentwidths.Itwasconcludedthatthismodelcanpredictthehydrodynamicsforoffshorestructureseffectively,andthesidewallhasasignificantimpactonthefirstorderquantitiesandsecond-orderdriftloads,whichsatisfiedtheresonantrule.

  • 标签: Taylorexpansionboundaryelementmethod Sidewalleffects IMAGE Green FUNCTION HYDRODYNAMICS
  • 简介:Ephedrinehasaprotectiveeffectagainstcerebralischemia,butitssideeffectslimititsclinicalapplication.Resultsfromapreviousstudyshowedthat1.5mg/kgperdayephedrinecanpromotemotionrecoveryinratsfollowingcerebralischemia/reperfusionwithoutsignificantsideeffects.Inthepresentstudy,ephedrineatdosesof3.0,2.5and2.0mg/kgwasusedtotreatratswithcerebralischemia/reperfusionandtheeffectsofephedrineontheheart,liver,kidneyandcerebrumwereobserved.Resultsshowedthatthebloodpressureofratswithcerebralischemia/reperfusioninjuryfollowingephedrinetreatmentwaslowerthaninratsthatrecoverednaturallyfromcerebralischemia/reperfusion,butthepressuredecreasedwithincreasingdosesofephedrine.Inaddition,serumaspartatetransaminase,alkalinephosphataseandcreatinineconcentrationinratswithcerebralischemia/reperfusioninjuryfollowingephedrinetreatmentweregreaterthaninratsthatrecoverednaturallyfromcerebralischemia/reperfusion.Theconcentrationsoftheseenzymesweredecreasedwithincreasingdosesofephedrine.Ephedrine-treatedratsdisplayedhyperemia,degenerationandedemainthecerebrum,liver,heartandkidney.Resultsdemonstratedthatephedrineexhibitedsideeffectsonthecerebrum,heart,liverandkidneyinratsfollowingcerebralischemia/reperfusioninadose-dependentmanner.

  • 标签: 缺血/再灌注损伤 大鼠脑 麻黄素 低剂量 副作用 谷草转氨酶
  • 简介:Inthisstudy,etherificationofginkgolideBanddimethylaminoethylchloridehydrochloridewasinvestigatedasamodelreactioninamicro-flowsystem(MFS),providingtheresultingethersinhighyieldwithfewersideeffects.Meanwhile,thisnovelprocessinMFSworkedwellforotherginkgolidesfromGinkgolbilobaandhalides,givingmoderateyields.

  • 标签: ETHERIFICATION Ginkgolide B 微流动的系统 很少副作用
  • 简介:有在结构的不同方面链的Polyimides(PI)被pyromelliticmdianhydride(PMDA)的copolycondensation与3,5-diamino-综合(4甲烷酸己基的酉旨)phenyl-benzamide(C6-PDA),(4-butoxybiphenol)-3,5-diaminobenzoate(C4-BBDA)并且3,5-diamino-benzoic酸decyl酉旨(C10-DA)说出PI-PDA,PI-C4,PI-DA分别地。PI-PDA和PI-DA的方面链的长度象PI-C4的一样类似。通过pretilt角度测试,方面链的长度什么时候是类似的,被表明方面链也不磨擦过程的结构能也不在垂直排列性质上有明显的差别,站在约1.6nm。PI表面的表面精力的测量进一步证明了这结果。X光检查光电子分光镜测量的结果显示PI的方面链从聚合物体积阶段外面拉长了并且在表面上积累了。

  • 标签: 侧链结构 聚酰亚胺 取向行为 长度 类似 氨基苯甲酸
  • 简介:Theprocessingmethodappliedtothesidesurfaceisdifferentfromthemethodappliedtothelightpasssurfaceinneodymiumphosphateglass(Nd:glass),andthussubsurfacedefectsremainafterprocessing.ThesubsurfacedefectsinthesidesurfaceinfluencethegainuniformityofNd:glass,whichisakeyfactortoevaluatetheperformanceofamplifiers.Thescatteringcharacteristicsofsidesubsurfacedefectsweresimulatedbyfinitedifferencetimedomain(FDTD)Solutionssoftware.Thescatteringpowersoftheglassfabricatedbyacomputernumericalcontrol(CNC)machinewithoutcladdingweretestedatdifferentincidentangles.Thetrendofthecurvewassimilartothesimulatedresult,whilethesmallestpointwasdifferentwiththecomplextruemorphology.Thesimulationshowedthattheequivalentresidualreflectivityofthecladdingglasscanbemorethan0.1%whenthenumberofdefectsinasinglegriddingisgreaterthan50.

  • 标签: CLADDING FDTD GAIN UNIFORMITY SUBSURFACE defect
  • 简介:BACKGROUND:GenetherapyforParkinson'sdiseaseisbeingexploredasaneffectivestrategytorestoreandprotectthefunctionofneuronalcellsinthesubstantianigra.Regulationofgeneexpressionisnecessaryforgenetherapytoavoidadverseeffectsduetoexcessivesynthesisoftransgeneproducts.OBJECTIVE:Herewedevelopedrecombinantadeno-associatedvirus(AAV)asaviralvector-mediatedgeneregulationsystembasedonCrerecombinasefusedtothemutatedligand-bindingdomainoftheestrogenreceptor(CreERT2)+inducingagenttamoxifen.InducibleCrerecombinasewasusedtoreducetyrosinehydroxylasegeneexpressionandtopreventtheexcessiveincreaseindopamine.DESIGN,TIMEANDSETTING:Ageneticengineeringinvitrocomparativestudyandrandomizedcontrolledanimalexperiment.ThisstudywasconductedattheGeneTherapyCenter,JichiMedicalSchool,JapanfromJune2002toJune2004.METHODS:ToconstructarecombinantAAVvectorcarryingadopaminesynthasegene.ThetyrosinehydroxylasegenewasinsertedusingaloxPfragmentthatcouldberegulatedbyCrerecombinase.TherecombinantAAVvectorcarryingtheCreERT2genewasco-transducedwithHEK293cellsandthecorpusstriatuminaratmodelofParkinson'sdisease,withinducingagenttamoxifentoregulategeneexpression.MAINOUTCOMEMEASURES:ThelevelsofdopamineandaromaticL-aminoaciddecarboxylase(AADC)activityweredetectedinHEK293cellmediumandinthecorpusstriatuminaratmodelofParkinson'sdiseaseusinghigh-performanceliquidchromatography.ImmunofluorescencedoublestainingwasusedtoobservetyrosinehydroxylaseandCreorAADCco-expressioninHEK293cellmedium.ImmunohistochemicalstainingwasemployedtoobservetyrosinehydroxylaseandAADCexpressionandbehavioralchangesweremeasuredinParkinson'srats.RESULTS:TransfectedAAV-CreERT2andAAVexpressingdopaminesynthesisenzymescouldincreasethesynthesisofdopamineinHEK293mediumandParkinson'sratstriatum(P<0.01)andimprovetherotationalbehaviorofParkin

  • 标签:
  • 简介:以便改进一个卸载的系统的安全性质与(SBS)一起在FPSO被一个蛋黄系统在BZ25-1的域里在哪个系在系在,分析那些性质是必要的。根据类似的工程的经验,拖引不同卸载的策略安排被使用3-D放射/衍射理论和伪静电干扰时间领域方法估计他们的各自的安全性质讨论。通过不同安排比较的安全评价分析,改进与一起系在卸载系统的安全性质的各种各样的方法被在系在的线和fender偏转分析紧张验证。通过比较,由适当地扩大关键因素,包括象大索的数字一样的fenders和大索的尺寸,更好的安全表演能被完成,这能被结束。

  • 标签: 系泊系统 安全评估 卸载系统 loading 安全性能 浮式生产
  • 简介:AlkylatingagentsarechemicallyreactivedrugsthatreactwithDNAtoformcovalentbonds,causingsingle-strandordouble-strandDNAbreaksthatleadtointerstrandandintrastrandDNAcross-linking.Theseagentsareusedextensivelyincancerchemotherapy.Theyhaveasteepdose-responsecurveandarethereforeusefulindoseintensificationstrategies(e,g.inbonemarrowtransplantation).Thesubclassesofalkylatingagentsareasfollows.

  • 标签: 细胞毒素 化学疗法 肿瘤 治疗
  • 简介:一个创新水动力学理论和数字模型被开发帮助在二一起深海的漂浮身体上改进波浪飘移力量的数字预言的效率,精确性,和集中。波浪飘移力量被来源力量和相应格林函数的双集成在身体表面上表示,它基于动量保存与远域公式一致并且分享在每身体上提供飘移力量的近的域计算的优点。数字结果通过比较一般的远地模型和压力积分模型,以及用软件HydroStar开发的中间的地模型被验证。

  • 标签: 漂移 波浪 浮体 势力 流体力学理论 数值模型
  • 简介:Mostcytotoxicchemotherapydrugsexerttheireffectbyinhibitingoneormoreoftheprocessesinvolvedincelldivision.Itappearsthatthefateofcellsdamagedbychemotherapyistodieprimarilybyinductionofapoptosis(prograrmnedcelldeath).Chemotherapyisgenerallyusedtotreatcanceratanadvancedorearlystage.

  • 标签: 细胞毒素 化学疗法 毒副作用 肿瘤 治疗
  • 简介:Epithelialovariancancerisprimarilyadiseaseofolderwomen.Advancedageisriskfactorfordecreasedsurvival.Optimalsurgeryandthesafeandeffectiveadministrationofchemotherapyareessentialforprolongedprogression-freeandoverallsurvival(OS).Inthisarticle,theavailableregimensinboththeprimarytreatmentandrelapsedsettingarereviewed.

  • 标签: 化疗药物 卵巢癌 老年 危险因素 操作系统 生存期
  • 简介:暗面是指我们自己内在的消极因素。学会承认并去喜欢自己的暗面,就会减少它对我们生活的影响,努力从暗面中发掘出积极的能量,促进蓬勃向上的生活!

  • 标签: 高一 英语 双语阅读 阅读练习