简介:Objectives:TounderstandtrendsandepidemiologicalfeaturesofsyphilisovertherecentyearsinChinaandprovideascientificbasisfordevelopingpreventionstrategies.Methods:From1985to2000,syphiliscase-reportingdatacollectedfromallprovinces,autonomousregionsandmunicipalitieswereanalyzedbyapplyingepidemiologicalmethods.Results:(1)Epidemictrends:syphilisincidencehassteadilyriseninChinafrom1985to2000,especiallyafter1993,whenitassumedanexponentialgrowthpattern.80,406casesofsyphiliswerereportedinthecountryin1999,whichwasalmost40timesthenumberreportedin1993.Duringtheperiodof1993-1999,theannualaveragegrowthofthesyphilisincidenceratewas83.55%.Perhapsduetoarecentnationallawenforeementcampaign,thenumberofreportedsyphiliscasesdroppedslightlyin2000.(2)Geographicaldistribution:Syphilisspreadfromcoastal,""open""cities(especiallysomecitiesinFujianprovince)toinlandurbanareas,thentoruralareas.RegionswithahighincidencerateofsyphilisinChinaweretheMinjiang,Yangtze,andZhujiangRiverDeltas,BeijingandTianjinmunicipalities,andNortheastChina.Therewasasignificantdifferenceofsyphilisincidenceratesandgrowthratesbetweentheseareas.Aseriousepidemicoccurredinsomeareas,withanincidenceratereachingover200casesoutof100,000.(3)Populationdistribution:theratioofmaleandfemalecasesgraduallychangedfrom1.57:1in1993to1.02:1in2000.Theratewasthehighestinthe20-29agegroupandthelowestin10-14agegroup.Agreatdifferenceexistedinprevalencebetweendifferentpopulationgroupsanddifferentareas,andsomeareaswithseriousepidemicshadhighprevalenceratesevenamoungthegeneralpopulation.(4)Clinicalstageofsyphilis:Primaryandsecondarysyphiliscaseshavebeendominatingwithapercentageof90%ofallsyphiliscases.Primarysyphiliswasthemostcommoninmalesandsecondarysyphilisinfemales.Secondaryandlatentsyphilisc
简介:目的:探讨子宫内膜异位症患者中血管内皮生长因子(VEGF)、磷脂酰肌醇-3激酶/蛋白激酶B(PI3K/Akt)表达水平及其与血管生成的关系,并且探讨VEGF与PI3K在调控血管生成过程中的相互关系。方法:利用S-P方法对32例EM手术标本和30例子宫肌瘤中VEGF、Akt及微血管密度(MVD)的表达进行检测。结果:EM中正常内膜、在位内膜和异位内膜Akt、VEGF阳性表达率分别为20.0%(6/30)、37.5%(12/32)、84.4%(27/32)、60.0%(18/30)、75.0%(24/32)、87.5%(28/32);EM中正常内膜、在位内膜和异位内膜MVD分别是(10.37±5.24)、(19.14±7.10)、(48.24±10.54)。Akt、VEGF和血管密度在EM中异位内膜较正常内膜组高表达,在调控血管生成过程中,Akt与VEGF呈正相关。结论:PI3K/Akt、VEGF均参与EM的发生发展,在EM血管生成中发挥关键作用,共同参与EM过程。
简介:目的:探讨子宫内膜异位症(EMs)患者中磷脂酰肌醇-3激酶/蛋白激酶B(PI3K/AKT)和血管内皮生长因子(VEGF)表达水平。方法:采用EMs患者32例,取在位子宫内膜和异位内膜,无EMs患者34例,取子宫内膜,作为对照组。采用半定量RT-PCR法检测PI3K/AKT与VEGFmRNA表达,ELISA法检测PI3K/AKT蛋白和VEGF蛋白表达。结果:正常子宫内膜、异位子宫内膜和在位子宫内膜PI3K、AKT和VEGFmRNA和蛋白表达水平差异有统计学意义(P〈0.01)。异位内膜PI3K、AKT和VEGF的mRNA和蛋白的表达均高于在位内膜及正常内膜(P〈0.01)。EMs中,Ⅰ、Ⅱ期PI3K、AKT和VEGFmRNA和蛋白的表达与Ⅲ、Ⅳ期异位内膜相比,均无显著性差异(P〉0.05)。结论:PI3K/AKT信号转导通路和VEGF共同参与EMs的发生和发展。