tongueyy57.com
yy57.com 时间:2021-03-20 阅读:(
)
Gut,1984,25,784-791CasereportGlucagonomasyndromedemonstratinggiantduodenalvilliFIONAMSTEVENS,RWFLANAGAN,DO'GORMAN,ANDKDBUCHANANFromtheDepartmentsofGastroenterologyandDermatology,RegionalHospital,Galway,Ireland;andtheDepartmentofMedicine,Queen'sUniversity,Belfast,NorthernIrelandSUMMARYA39yearoldmandevelopedanitchybullousrashintheperineumandontheextremities.
Sixyearslater,aftergiantintestinalvillihadbeennotedatendoscopy,adiagnosisoftheglucagonomasyndromewasmade.
Investigationrevealedalargetumourofthepancreaticbodyandtail.
Themolecularspeciesofglucagonsecretedbythetumourwerecharacterisedusingthecombinedpurificationproceduresofimmunoaffinitychromatographyfollowedbygelfiltration.
Anecrolyticmigratoryerythematousskinrash,anaemia,angularstomatitiswithorwithoutdiabetesmellitusarerecognisedfeaturesofthepancreaticglucagonomasyndrome.
'Thesyndromeisassociatedwithapancreaticisletcelltumourproducingglucagon.
Removalofthetumourinsomecaseshasresultedincuringofthesymptomsandsignsofthesyndrome.
2Giantintestinalvillihavebeenfoundinapatientwitharenaltumourproducingenteroglucagon.
3Apatientwithfeaturesofbothconditions-thatis,skinrash,anaemia,angularstomatitis,diabetesmellitus,apancreatictumourandgiantduodenalvilliisreported.
CasehistoryApreviouslyhealthymaleagriculturalworkerfirstdevelopedanitchybullousskinrashintheperineum,feetandhandsinApril1969,attheageof39years.
Overthenextsixyearstheskinlesionswerevariouslydiagnosedascontactdermatitis,chronicmucocutaneouscandidiasisorseborrhoeicdermatitis.
Theskinlesionsrespondedtolargequantitiesoftopicalsteroidsorsystemicsteroids.
DiabetesmellitusdiagnosedinApril1969,originallywastreatedwithtolbutamide.
InDecember1970thetolbutamidewaswithdrawnandthediabetescontrolledwithl0kJ(2400cal)diet.
PulmonaryandAddressforcorrespondence:DrFMStevens.
Departmentof(iastro-enterology.
RegionalHospital.
Galway,Irelawnd.
Receivedforpublication1()October1983renaltuberculosiswasdiagnosedinDecember1970respondedtotreatmentwithstreptomycin,isoniazid,andethambutol.
BiopsyofaconcurrentanalfistulawasnegativeforMycobacteriumtuberculosis.
Minorrelapsesoftheskinrashoverthenextthreeyearsrespondedtotopicalsteroidswithnystatin.
From1973to1975theperiodsofremissionbecameshorterandtherelapsesmorewidespread,painful,anddifficulttocontrol.
Skinscrapingsforthetineawerenegative,butbecauseofpedalinterdigitalfissuring,griseofulvinandtopicalmiconazolenitratewerestartedwithoutbeneficialeffect.
TolbutamidewasreintroducedinMay1975.
InOctober1975,thepatienthaddevelopedrecurrentdiarrhoea,weightlossandamildnormo-chromic,normocyticanaemia(Hb11-4g/dl).
Abariummealandfollowthroughexaminationshoweddistortedantralmucosa,wideningoftheduodenalloopanddilationofthesmallintestinallumen,theseradiologicalfeaturesbeingsuggestiveofatumouroftheheadofthepancreaswithmalabsorptionsecondarytoexocrinepancreaticinsufficiency.
Thepatientwasreferredforuppergastrointestinalendoscopy.
Agastro-duodenoscopyshowednoabnormalityinthestomachnoranytumourinvasionintothewalloftheduodenum.
Giantvilli,however,werenotedthroughouttheproximalduodenumandthepossi-bilityofaglucagonomawasfirstconsidered.
Thenumberofvilliperendoscopicfieldisaboutonequarterthatseenincontrols-thatis,thepatient's784onMarch13,2021byguest.
Protectedbycopyright.
http://gut.
bmj.
com/Gut:firstpublishedas10.
1136/gut.
25.
7.
784on1July1984.
DownloadedfromGlucagonomasyndromedemonstratinggiantduodenalvillivilliareaboutfourtimesthecross-sectionalareaofcontrolvilli(Fig.
1).
Endoscopicbiopsyshowedsomeelongatedvilli;meanvillousheight,patient733,um:controls336,um,SD5065gm(n=6).
PancreaticjuicecollectedviaaDreilingtubecontainednomalignantcellsbutonexaminationthegastricaspiratewasfoundtocontainlargenumbersofmycobacteriatuberculosis.
Thepatientwasreferredforafurthercourseofantituberculoustherapy.
AtthistimeglucagonassaywasnotreadilyavailableonspecimensfromGalway.
Overthenextyeartheskinlesionsbecamealmostconstantandassociatedwithsevereburningpedalpainandoedema.
Relapsesoftheskinlesionswereaccompaniedbydiarrhoea.
Sigmoidoscopyrevealednoabnormalityintherectum.
InNovember1976,hewasreferredbacktotheGastroenterologyDepartment.
Fastingblooddrawnforglucagonassayshowedmassivehyperglucagon-aemia(detailsoftheassaywillbegivenlater).
ThepatientwasreadmittedinDecember1976forfurtherinvestigation.
EXAMINATIONTherashhadrecurred.
Thelesionsvariedincharacterhavingeitheracentralnecrolyticbullousareaofadryscalyareasurroundedbyerythemaandafigurateoutline.
Thelesionsweresitedaroundthemouthandnose(Fig.
2),antecubitalandpoplitealfossae,groinsandnatalcleftandoverpressureareas,ischialtuberositiesandlateralsurfacesofthelegs.
Acutelesionsonthefeetrelatedtothezippersonhisslipperswereaccompaniedbyextensiveerythemaandoedema,andhealedlesionsweredemarcatedbypigmentedareas.
Fissureswerenotedbetweenthetoesandonthesolesofhisfeet.
Thenailswerethickenedandopalescentwithlongitudinalridging,pittinganddistalsubungualhyperkeratosis.
Thebuccalmucosawasnormalalthoughangularstomatitiswaspresent.
Thetonguewasshiny,redandfissured.
Thepatientwaspaleandemaciated,withnoFig1EndoscopicphotographsofduodenalmucosaofpatientBB(AandB)andnormalsubject(CandD).
PhotographsweretakenthroughanOlympusGIF-D,panendoscope.
FiguresBandDaftersprayingthemucosalFig2PatientBB,withtypicalrashinvolvingmiddlethirdsurfacewith04%indigocarmine.
offace.
785onMarch13,2021byguest.
Protectedbycopyright.
http://gut.
bmj.
com/Gut:firstpublishedas10.
1136/gut.
25.
7.
784on1July1984.
DownloadedfromStevens,Flanagan,O'Gorman,andBuchanansubcutaneousfat.
Therewasnojaundiceorlympha-denopathy.
Theabdomenwasdistendedbutsoft.
Nohepatosplenomegaly,renalmasses,othermassesorascitesweredetected.
Bowelsoundswereactive.
Generalisedmuscleweaknessandwastingwasnoted.
Hyperaesthesiawasfoundina'gloveandstockingdistribution'.
Reflexeswerebrisk,withflexorplantarresponses.
Hismentalstatuswasvolatile,attimeshewasuncooperativeandatothertimesdocile.
ThepatientrepeatedlyrefusedsurgeryinGalwayandeventuallyalaparotomywasperformedelsewhere.
Atoperation,thepresenceofalargetumourofthepancreas(12x18cm)wasconfirmed.
Excisionwasimpossiblebecauseofextensionofthetumouraroundthesuperiormesentericaxis,theportalvein,andextendingintotheportahepatisandretroperitonealspace.
Biopsyrevealedanisletcellcarcinomaofthecvcelltype.
Tissuewasnotavailabletoextractglucagon-likeimmunoreactivespeciesforcomparisonwiththeperipheralbloodspecies.
Thepatientdiedpostoperatively.
InvestigationHAEMATOLOGYHaemoglobin11.
1g/dl,platelets379000,ESR16mm/l.
Redcellsweremildlyanisocytic,poikilocytic,andmacrocytic.
NoHowellJollybodiesweredetected.
Serumiron,folate,andvitaminB12normal.
BIOCHEMISTRYRoutinebiochemicalscreenshowedabnormalitiesofgammaglutamyltransferase34U/l(normalrange(NR)5-25U/l).
Cholesterol336mmol/l(NR337-7*0mmol/l).
Urinary5hydroxyindoleaceticacid(fourcollections)mean106mol/24h(NR30000MW)withthelatterbeingthemajorpeak.
.
E500BDccIGKCr15000203040506070Effluentvolume(ml)Fig7SephadexG-50Superfinegelchromatographyof0oplasmaduringL-arginineinfusion;plasmapreviously81000-opurifiedbyimmunoaffinitychromatographyonaC-terminalreactiveglucagonantibodySepharoseconjugate0.
.
EluateswereassayedbyanN-terminalantibodyN-GLI)andaC-terminalantibody(.
.
.
.
C-GLl).
()showspositionofGLlpeaksincontrolsubjects.
Columnmarkersareshown,BD=bluedextran,cc=cytochromeC,I=insulin,G=glucagon,K2CrO4=potassiumchromate.
5500-EDuringarginineinfusionchangesinthegelchromatographicprofileoccurred(Fig.
7).
Therewasamarkedincreaseinthe12000and35000203040506070molecularweightregionimmunoreactivity,theEffluentvolume(ml)glucagon-likeimmunoreactivityinthe3500molecularweightregionshowingastrongerreactionFig6SephadexG-50SuperfinegelchromatographyofwiththeN-terminalantibodyandthe12000fastingplasmapreviouslypurifiedbyimmunoaffinitymolecularweightpeakglucagon-likeimmuno-chromatographyonaC-terminalreactiveglucagonreactivityshowedstrongerreactionwiththeC-antibodySepharoseconjugate.
EluateswereassayedbyanN-terminaltantibody(N-GLI)andaC-terminalerminalantibody.
Nopeakwasfoundmgelantibody(.
.
.
.
C-GLI).
(,,)showspositionofGLIpeakschromatographyofeitherfastingspecimenortheincontrolsubjects.
Columnmarkersareshown,BD=bluearginineinfusionspecimenwhichcorrespondedtodextran,cc=cytochromeC,I=insulin,G=glucagon,the>30000molecularweightpeakfoundinnormalK2CrO4=potassiumchromate.
fastingsubjects.
789.
onMarch13,2021byguest.
Protectedbycopyright.
http://gut.
bmj.
com/Gut:firstpublishedas10.
1136/gut.
25.
7.
784on1July1984.
DownloadedfromStevens,Flanagan,O'Gorman,andBuchananDiscussionThepancreaticglucagonomasyndrome,whichischaracterisedbyatypicalskinrash,angularstomatitis,glossitis,weightloss,anaemia,diabetesmellitus,andglucagon-producingtumourofthepancreashasbeenrepeatedlydocumented.
'1314Thesimilarityoftherashtothatseeninacro-dermatitisenteropathicaanditsresponsetozincsupplementsleadtothesuggestionthattheskinlesionsandglossitisoftheglucagonomasyndromearerelatedtosequestrationofzincbytheactivelysecretingtumour.
Ithasbeensuggestedthatfattyaciddeficiencymayproducetheskinlesionbuteveninrelapsethefastingserumlipidswerenormalinourpatientapartfromminimaldepressionofcholesterol.
Spontaneousimprovementintheskinrashonwithdrawalofsulphonylureaswasnotedina38yearoldmanwithapancreaticglucagonoma.
'7Soleretalsuggestedthatthetolbutamidewasprovokingglucagonreleasefromthetumourandthusamoresevereskinrash.
17Therelativeremissionofsymptomsfrom1971-1973inourpatientwhendiabeticcontrolwasbycalorierestrictionaloneandsubsequentrelapseonre-introductionoftolbutamidesupportthistheory.
Ourpatientnotonlyhadfeaturesofthepancreaticglucagonomasyndromebutalsohadlargevilliintheproximalduodenum.
Theenlargedvilli,initiallynotedatendoscopy,wereconfirmedbymorphometricmeasurementonbiopsymaterial.
Endoscopicbiopsiesarenotidealforthisassessmentbecauseoftheirsmallsize,paucityofvilli,tendencytocurlandproblemsofoptimalorientation.
Nevertheless,themeanvillousheightincontrols(336Mm)wassimilartothatfoundbyotherauthors(393,Am).
'9Thefrequencyoftheoccurrenceoflargevilliinpancreaticglucagonomasyndromeisnotknownasthemajorityofpatientshavenotundergoneasmallintestinalbiopsy.
Giantintestinalvillihavebeenrecordedina44yearoldfemalepatient,presentingwithpolyuriaandconstipation,whowasfoundtohaveanenteroglucagonproducingtumourofthekidney.
3Thepatienthadatransienterythematousrash,howeverthedescriptioninthecasereportisnotthatoftheseverenecrolyticdermatosisofthepancreaticglucagonomasyndrome.
Themeanvillousheightinthispatient(1150,um)wasgreaterthaninourpatient(733,um)butthebiopsyintheformerwasfromthemid-jejunum3andinthelatterfromtheproximalduodenum.
Incontrolsthevilliarelongerinthejejunumthanintheduodenum.
'9Ithasbeensuggestedthattheenteroglucagonsecretedbytherenaltumourmayhaveinducedtheintestinalmorphologicalabnormalities,asthesechangesregressedafteroperativeremovalofthetumour,21'2andsalineextractsofthetumour,wheninjectedintraperitoneallyinmice,resultedinmacroscopicenlargementofthesmallbowel.
2'Inthepresentpatientanunusualhighmolecularweightglucagon(molecularweight12000)hasbeenisolated.
Itispossiblethatthisglucagoninducesvilloushypertrophyalthoughitislargerthantheenteroglucagon(molecularweight7000approxi-mately)extractedfromtherenaltumourofthepatientwiththegiantvilli.
20'Affinitychroma-tographyshowedourpatienttobedevoidofglucagon-likeimmunoreactivityreactingonlywithN-GLIantibody.
Innormalsubjectsglucagon-likeimmunoreactivityfromplasmaadherestoaC-terminalreactiveantibodycolumnbutthewashingsfromthiscolumncontainglucagon-likeimmuno-reactivitywhichadherestoanN-terminalcolumn.
ThereasonforthisabnormalityisnotclearbutitmaybeduetodegradationorconcealmentoftheN-terminalsequenceorthepossessionofasequencenotrecognisedbytheantibodies.
Experimentalstudieshaveshownvariousfactorsexhibitatrophiceffectonthesmallintestinalmucosa.
Exogenousgastrinstimulatesgrowthoftheduodenalmucosa,withoutasimilareffectbeingdemonstrabledistallyinthesmallintestine.
22Inourpatient,withnormalfastinggastrinconcentration,hypertrophicvilliwereseenthroughouttheareaexamined,whichwasconfinedtotheduodenalcapandthedescendingduodenum.
Anotherregulatorypeptide,epidermalgrowthfactor,EGF,extractedfromsalivaryandduodenalglandshasbeensuggestedasacandidatefortheroleofentero-trophin,thehormonalcontrollerofintestinalgrowth.
23Anincreaseinduodenalweight,DNAsynthesisandtotalDNAandRNAcontentoftheduodenalmucosahasbeendocumentedafterepidermalgrowthfactoradministration,butthisconflictswithapreviousreportfailingtodemon-stratesimilargrowth.
23Epidermalgrowthfactorassaywasnotavailableinourpatient.
Theeffectofluminalfactorsonintestinaladaptationaftergutresectionhasbeenstudied.
Pancreaticobiliarysecretions24andluminalnutrientsinhyperphagia-'resultedinincreasedmucosalgrowth.
Thesevereatrophyofthesmallintestineoccurringinratsontotalparenterualnutritioncanbepreventedbytheadministrationof15%oftotalcaloriesbytheenteralroute.
25Enterallipids,especiallylongchaintriglycerides,aresuperiortoglycogenandeggalbumeninmaintainingmucosalDNAandtotalproteinweight.
25Itisunclearwhethertheluminalfactorsactdirectlyorbyreleasingatrophichormone.
Inourpatientwehadnoevidenceofexcessiveexocrinepancreaticobiliarysecretionand790onMarch13,2021byguest.
Protectedbycopyright.
http://gut.
bmj.
com/Gut:firstpublishedas10.
1136/gut.
25.
7.
784on1July1984.
DownloadedfromGlucagonomasyndromedemonstratinggiantduodenalvilli791hisdiet(10kJ)wasrestrictedtocontrolhisdiabetesmellitus.
Theabnormalmentalstateofthepatientinfluencedhisinvestigationandtreatment.
Hismoodrapidlychangedfromfullcooperationtocompleteobstinacy.
Menta.
lsymptoms,usuallydepression,havebeennotedinthepancreaticglucagonomasyndrome.
1314Themetabolicbasisforthesesymptomsandtheotherneurologicalabnormalityfoundinthispatient,namelyalteredperipheralsensation,isunexplained.
ThisworkwassupportedbyagrantfromtheBritishDiabeticAssociationtooneoftheauthors(KDB).
WewishtothankProfessorCFMcCarthy,Depart-mentofMedicine,UniversityCollege,GalwayforhisencouragementandDrNinaCarson,SeniorLecturerinChildHealth,DepartmentofChildHealth,Queen'sUniversityofBelfastfortheplasmaaminogramonthepatient.
References1MallinsonCN,BloomSR,WarinAP,SalmonPR,CoxB.
Aglucagonomasyndrome.
Lancet1974;2:1-5.
2LightmanSL,BloomSR.
Cureofinsulin-dependentdiabetesmellitusbyremovalofaglucagonoma.
BrMedJ1974;1:367-8.
3GleesonMH,BloomSR,PolakJM,HenryK,DowlingRH.
Endocrinetumourinkidneyaffectingsmallbowelstructure,motilityandabsorptivefunction.
Gut1971;12:773-82.
4McCarrollAM.
Insulinclearanceby'theisolatedperfusedratliver.
Belfast,NorthernIreland:Queen'sUniversity;MDThesis,1971.
5ArdillJFS.
Themeasurementofgastrinbyradio-immunoassay.
Belfast,NorthernIreland:Queen'sUniversity;PhDThesis,1973.
6HolohanKN,MurphyRF,FlanaganRWJ,BuchananKD,ElmoreTD.
Enzymiciodinationofthehistidylresidueofsecretin:aradioimmunoassayofthehormone.
BiochimBiophysActa1973;322:178.
7BuchananKD,TealeJD,HarperG.
Antibodiestounconjugatedsyntheticandnaturalsecretins.
HormMetabRes1972;4:507.
8MasonJC,MurphyRF,HenryRW,BuchananKD.
Starvationinducedchangesinsecretin-likeimmuno-reactivityofhumanplasma.
BiochimBiophysActa1979;582:322-31.
9ArdillJ,DohertyCC,BuchananKD.
ThenatureofcirculatingVIPanditssupressionbyeating.
ScandGastroenterol1978;13:8(suppl49).
10ArdillJ.
RadioimmunoassayofG.
I.
hormones.
In:BuchananKD,ed.
Clinicsinendocrinologyandmetabolism.
GIhormones;Vol8no.
2.
London:WBSaunders,1979:265-80.
11BuchananKD.
Studiesonthepancreatic-enterichormones.
Belfast,NorthernIreland:Queen'sUniversity;PhDThesis,1973.
12FlanaganRWJ,BuchananKD,MurphyRF.
Specificityofantibodiesinradioimmunoassayofglucagon.
Diabetologia1974;10:365.
13MallinsonC,BloomSR.
Thehyperglycemic,cutaneoussyndrome:Pancreaticglucagonoma.
In:FriesenSR,BolingerRE,eds.
Surgicalendocrinology:clinicalsyndromes.
Philadelphia:JBLippincott,1978:171-99.
14BloomSR,PolakJM.
Theglucagonomasyndrome.
In:GrossmanM,SperanzaV,BassoN,LezocheE,eds.
Gastrointestinalhormonesandpathologyofthedigestivesystem.
NewYork:PlenumPress,1978:183-94.
15MurphyRF,ConlonJM,ImamA,KellyGJC.
Comparisonofnon-biospecificeffectsinimmuno-affiinitychromatographyusingcyanogenbromideandbifunctionaloxiraneasimmobilizingagents.
JChromatogr1977;135:427-33.
16MallinsonCN,AdrianTE,HanleyJ,BryantM,BloomSR.
Metabolicandclinicalresponseinpatientswithpancreaticglucagonomas(Abstract).
IrJMedSci1977;146suppl1:37-8.
17SolerNG,OatesGD,MalinsJM.
Glucagonomasyndromeinyoungman.
ProcRSocMed1976;69:429-31.
18CheliR,AsteH.
Duodenitis.
Stuttgart:GeorgThieme,1976:17.
19PereraDR,WeinsteinWM,RubinCE.
Smallintestinalbiopsy.
HumPathol1975;6:157-217.
20BloomSR.
Anenteroglucagontumour.
Gut1972;13:520-3.
21DowlingRH.
Smallboweladaptationanditsregulation.
In:PolakJM,BloomSR,WrightNA,DalyMJ,eds.
Basicscienceingastroenterology.
Structureofthegut.
Ware,Herts:GlaxoGroupResearchLtd,1982:371-90.
22JohnsonIR,AuresD,YuenL.
Pentagastrin-inducedstimulationofproteinsynthesisinthegastrointestinaltract.
AmJPhysiol1969;217:251-4.
23DembinskiA,GregoryH,KonturekSJ,PolafiskiM.
Trophicactionofepidermalgrowthfactoronthepancreasandgastroduodenalmucosainrats.
In:RobinsonJWL,DowlingRH,RieckenE-O,eds.
Mechanismsofintestinaladaptation.
Lancaster:MTPPressLtd,1982:281-4.
24HughesCA,BatesT,DowlingRH.
Cholecystokininandsecretinpreventtheintestinalmucosalhypoplasiaoftotalparentralnutritioninthedog.
Gastroenterology1978;75:34-41.
25MorinCL,GreyVL,GarofaloC.
Influenceoflipidsonintestinaladaptationafterresection.
In:RobinsonJWL,DowlingRH,RieckenE-O,eds.
Mechanismsofintestinaladaptation.
Lancaster:MTPPressLtd,1982:175-84.
onMarch13,2021byguest.
Protectedbycopyright.
http://gut.
bmj.
com/Gut:firstpublishedas10.
1136/gut.
25.
7.
784on1July1984.
Downloadedfrom
Hostinger 商家我们可能一些新用户不是太熟悉,因为我们很多新人用户都可能较多的直接从云服务器、独立服务器起步的。而Hostinger商家已经有将近十年的历史的商家,曾经主做低价虚拟主机,也是比较有知名度的,那时候也有接触过,不过一直没有过多的使用。这不这么多年过去,Hostinger商家一直比较稳妥的在运营,最近看到这个商家在改版UI后且产品上也在活动策划比较多。目前Hostinger在进...
青云互联怎么样?青云互联美国洛杉矶cn2GIA云服务器低至19元/月起;香港安畅cn2云服务器低至19元/月起;日本cn2云主机低至35元/月起!青云互联是一家成立于2020年的主机服务商,致力于为用户提供高性价比稳定快速的主机托管服务。青云互联本站之前已经更新过很多相关文章介绍了,青云互联的机房有香港和洛杉矶,都有CN2 GIA线路、洛杉矶带高防,商家承诺试用7天,打死全额退款点击进入:青云互联...
官方网站:点击访问青云互联活动官网优惠码:终身88折扣优惠码:WN789-2021香港测试IP:154.196.254美国测试IP:243.164.1活动方案:用户购买任意全区域云服务器月付以上享受免费更换IP服务;限美国区域云服务器凡是购买均可以提交工单定制天机防火墙高防御保护端口以及保护模式;香港区域购买季度、半年付、年付周期均可免费申请额外1IP;使用优惠码购买后续费周期终身同活动价,价格不...
yy57.com为你推荐
对对塔为什么不能玩天天擂台?(对对塔)安徽汽车网中国汽车十大品牌中老铁路中长铁路的铁路的新中国历史百度关键词工具常见百度关键词挖掘方法分别是什么请列举?777k7.comwww.777tk.com.怎么打不 开51sese.comwww.51xuanh.com这是什么网站是骗人的吗?m.2828dy.combabady为啥打不开了,大家帮我提供几个看电影的网址百度指数词什么是百度指数www.se222se.comhttp://www.qqvip222.com/广告法广告法有什么字不能用
域名商 openv hostmaster 国外主机 腾讯云数据库 免费网站监控 tk域名 tightvnc 中国特价网 有奖调查 韩国名字大全 老左来了 泉州电信 网站卫士 hdd 香港新世界中心 免费asp空间申请 万网主机 卡巴下载 日本小学生 更多