学科分类
/ 6
117 个结果
  • 简介:Cancerscreeningisasourceofmuchdebate.Attheinterfacebetweenpublichealth,specialistcare,economicsandpolicy,itcreatestensionsbetweenprofessionalgroups,politicians,themediaandthepublic.Ascreeningtestmaybecheap,butapplyingittoapopulation(withrigorousqualitycontrolandeffectiveprocessingofpatientswithabnormalresults)createsahugeworkloadandthereforecost.Screeningcanalsohavepsychologicaleffectsonindividualswithfalse-positiveresultswhorequireinvestigationbutareeventuallyfoundnottohavecancer.

  • 标签: 癌症 筛查方式 个体差异 病理学研究
  • 简介:Ithabeenknownforsometimethatsometumourshavetheabilitytoproducaehormones.Thishastraditionallybeentermed‘ectopic'hormoneproduction,butwiththeincreasingsensitivityofmodenmoleculartechniques,ithasbecomeclearthatthisisamisnomer;manytissuescanproducehormoner,andnormallydosoatlowlevels,thehormonesactinglocallyascytokinesinaparacrinemanner.Intumours,bymechanismsthatremainunclear,productionofthesehormonesand/orincompletelyprocessedprecursorsisinereased,andthetem‘eutopic’productionismoreappropriate.

  • 标签: 内分泌综合症 “异位”激素产生 高钙血症 甲状旁腺素 抗利尿激素分泌异常综合症
  • 简介:Inthepastdecade,anincreasedamountofclinically-orientedresearchinvolvingimmunotoxinshasbeenpublished.Immunotoxinsareagroupofartificially-madecytotoxicmoleculestargetingcancercells.Thesemoleculescomposedofatargetingmoiety,suchasaligandoranantibody,linkedtotoxinmoiety,whichisatoxinwitheithertruncatedordeletedcell-bindingdomainthatpreventsitfrombindingtonormalcells.Immunotoxinscanbedividedintotwocategories:chemicallyconjugatedimmunotoxinsandrecombinantones.Theimmunotoxinsofthefirstcategoryhaveshownlimitedefficacyinclinicaltrialsinpatientswithhematologicmalignanciesandsolidtumors.Withinthelastfewyears,single-chainimmunotoxinsprovideenhancedtherapeuticefficacyoverconjugatedformsandresultinimprovedantitumoractivity.Inthisreview,webrieflyillustratethedesignoftheimmunotoxinsandtheirapplicationsinclinicaltrials.Cellular&MolecularImmunology.2005;2(2):106-112.

  • 标签: 免疫毒素 肿瘤 治疗方法 配合基 抗体
  • 简介:DuckhepatitisBvims(DHBV)DNAwasdetectedindifferenttumorousnodulesofduckswithhepaticmulticentriccancerorintrahepaticmetastasisbySouthernblottechnique.Among7duckswithhepatocellularcarcinomaofmultipletumornodules,thehybridizationpatternofIntegratedDHBVDNAIndifferenttumorousnoduleswasidenticalin3casesanddifferentin2cases.OnecaseshowedasimilarhybridizationpatternintwotumorousnodulesandotheronewasnegativetorDHBVDNA.IntegratedDHBVDNAwasalsoidentifiedinametastaticlungcancerofduckswithhepatocellularcarcinoma.Thehybridizationpatternofmetastasisoflungswasasthesomeasthatinprimaryhepatocellularcarcinoma.ThesamediscretehybridizationbandsInthedifferenttumorousnodulesindicatethatthesenodulesmightarisefromonetransformedcell.ThedifferenthybridizationpatternsInvarioustumorousnodulesshowthatthesetumorousnodulesmightarisefromvarioustransformedcells.Theresultssuggestthatthehyb

  • 标签: NODULES DNA DHBV transformed lungs metastasis
  • 简介:Tumorgrowthandmetastasisareangiogenesis-dependent.Anti-angiogenictherapymaybeausefulapproachtocancertherapy.Thisreviewdiscussedtumorangiogenesisandimmunotherapyoftargetingtumorangiogenesisfromtwomainaspects:(1)activevaccinationtoinduceeffectiveanti-angiogenesisimmunity;(2)passiveimmunotherapywithanti-pro-angiogenicmoleculesrelevantantibody.Evidencefromtherecentyearssuggestedthatanti-angiogenictherapyshouldbeoneofthemostpromisingapproachestocancertherapy.

  • 标签: 肿瘤 免疫疗法 血管生成 治疗方法
  • 简介:Wehavereviewedthegenetherapyingastrointestinaldiseases^[1].GastriccanceriscommoninChina^(2-20),anditsearlydiagnosisandtreatmentarestilldifficultuptonow^(13-36).Theex-pressionofanexogenousgeneintroducedbygenetherapyintopa-tientswithgliomascanbemonitorednon-invasivelybypositron-emissiontornography^[4].

  • 标签: 胃癌 胃肠疾病 肿瘤 治疗方法 氮化酶
  • 简介:Nitricoxide(NO)isapleiotropicregulator,criticaltonumerousbiologicalprocesses,includingva-sodilatation,neurotransmissionandmacrophage-mediatedimmunity.Thefamilyofnitricoxidesynthases(NOS)comprisesinducibleNOS(iNOS),endothelialNOS(eNOS),andneuronalNOS(nNOS).Interest-ingly,variousstudieshaveshownthatallthreeisoformscanbeinvolvedinpromotingorinhibitingtheetiologyofcancer.NOSactivityhasbeendetectedintumourcellsofvarioushistogeneticoriginsandhasbeenassociatedwithtumourgrade,proliferationrateandexpressionofimportantsignalingcomponentsassociatedwithcancerdevelopmentsuchastheoestrogenreceptor.ItappearsthathighlevelsofNOSexpression(forexample,generatedbyactivatedmacrophages)maybecytostaticorcytotoxicfortumorcells,whereaslowlevelactivitycanhavetheoppositeeffectandpromotetumourgrowth.Paradoxicallytherefore,NO(andrelatedreactivenitrogenspecies)mayhavebothgenotoxicandangiogenicproperties.IncreasedNO-generationinacellmayselectmutantp53cellsandcontributetotumourangiogenesisbyupregulatingVEGF.Inaddition,NOmaymodulatetumourDNArepairmechanismsbyupregulatingp53,poly(ADP-ribose)polymerase(PARP)andtheDNA-dependentproteinkinase(DNA-PK).Anunderstand-ingatthemolecularleveloftheroleofNOincancerwillhaveprofoundtherapeuticimplicationsforthediagnosisandtreatmentofdisease.

  • 标签: 癌症 一氧化碳 合成酶 表达程度 受体
  • 简介:Acupuncture,asacomplementarytherapy,hasbeenusedtomanagethecancerassociatedsymptomsofcancerpatients.Toidentifytheefficacyandsafetyofacupunctureinthemanagementofcancer,thisreviewcriticallyanalysestherelevantpublicationsincludingbothexperimentalandclinicalstudies.Themajorityofstudiessuggestthatacupunctureeffectivelyrelievessomecancerrelatedsymptomssuchascancerpain,andsomeadverseeffectscausedbythecancerconventionaltreatmentssuchasnausea,vomiting,neutropeniaandxerostomia.

  • 标签: 肿瘤 中医治疗 针刺治疗 嗜中性白血球减少症 口腔干燥
  • 简介:Duetoconcernsregardingtheoverlappingfiguresinthisreviewthatareidenticaltothosecontainedinareviewarticlethatwehaveco-authoredandpublishedearlier,weretracttheabovepaperwepublishedinCellResearch.Weapologizeforanyconfusionthatmaybecausedbythismatter,althoughwestandbythescientificcontentscontainedintheCellResearchpaper.

  • 标签: 肿瘤 基因治疗 病理机制 临床
  • 简介:ChineseJournalofCancerResearch,aninternationalbiomedicaljournaleditedandpublishedquarterlyinEnglishbyChinaAnti-CancerAssociation(CACA),isacomprehensiveacademicjournal,aimingtoreflectprimarilythecreativeorinnovativeachievementsinallfieldsofcancerresea...

  • 标签:
  • 简介:OurpreviousstudyshowedthattwoMKN45variants,namelyMKN45Lm-andMKN45Lm+selectedbylamininadhesioninvitro,haddifferentabilitiesofinvasionandmetastasisinvivo(inoculatedinnudemice)andinvitro(inBoydenchamber),alsohaddifferentexpressionofcysteineproteinase.Inthepresentstudy,weinvestigatedthecellapoptosisofthisMKN45variantsbyTUNELandFACSmethods.Theresultswereshownsignificantdifferentofcellapoptosisinthiscellsublines.TheMKN45Lm-cellshadasmallsubdiploidypeak(3.5%)inDNAcontentanalyzedbyflowcytometry,

  • 标签: 细胞凋亡 细胞转移 胃癌 肿瘤 消化系统
  • 简介:Autofluorescencespectrafromtheserumofhealthmanandcancerpatientshavebeenmeasuredandanalyzed.Twoobviouslyspectracharacteristicsoftheserumhavebeendiscussedindetail.Anovellasercancerdiagnosissystem(LCD-1)hasbeenestablishedandthediagnosisresultsarecomparedwithclinicalmethods.

  • 标签: 癌症诊断 荧光谱 血浆
  • 简介:Objective:Toevaluatetheassociationbetweenobesityandtheriskofcolorectalcancer.Methods:331patientswithrectalcancerand175withcoloncancerwhoacceptedsurgicaloperationatBeijingCancerHospitalduring1995and2002wereenrolled.Datawerecollectedbyreviewingthepathologymaterialsandhospitalrecords.258healthypeoplewhoacceptedhealthexaminationatBeijingCancerHospitalduring2000and2002werealsoenrolledascontrol.Dataofheight,weightandgenderatthetimeofexaminationwerealsocollected.Obesitywasestimatedbybodymassindex(BMI),computedasweightinkilogramsdividedbyheightinmeterssquared(kg/m2).ThedegreeofobesitywascomparedbetweenthetwogroupsusingBMI(18.5,24-27.9and(28(kg/m2)asthecut-offpointsforunderweight,overweightandobesity.Associationswithobesitywereestimatedbyoddsratios(ORs)and95%confidenceintervals(CIs).AllORswereadjustedforageandsex.Results:Obesitywassignificantlyprevalentinfemalepatientswithrectalcancer.AllthepatientswithcoloncancershowedlowerlevelofBMIthancontrolsubjects.TheORsforrectalcancerrosewithincreasingBMIinwomen.Meanwhile,theORsforcoloncancerdroppedwithincreasingBMIinbothmenandwomen.Obesitywasanindependentriskfactorforrectalcancer,butnotanindependentriskfactorforcoloncancer.Conclusion:Rectalcancerandcoloncancermayhavedifferentbiologicalbehavior.Obesewomenhaverelativelyhighriskforrectalcancer.

  • 标签: 结肠癌 直肠癌 外科治疗 肥胖 相关性
  • 简介:人的telomerase颠倒transcriptase(hTERT)在超过85%肿瘤房间被表示,但是通常没在正常房间被发现,它作为理想的肿瘤伙伴抗原(TAA)做hTERT开发没有在人的癌症免疫疗法损害正常纸巾,明确地破坏癌症的潜在的疫苗。这被考察hTERT或它的肽和早临床的trialsusing的immunogenicity上的研究的基本进展在最后十年的hTERT疫苗途径。

  • 标签: 肿瘤 免疫疗法 转录酶 病理机制