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500 个结果
  • 简介:AIM:Tocharacterizetemporalpatternofresolutionandrecurrenceofnaivechoroidalneovascularization(CNV)secondarytowetage-relatedmaculardegeneration(AMD)treatedwithintravitrealbevacizumabonasneededregimen,andtoanalyzebaselineriskfactorsforCNVresolutionorrecurrence.METHODS:Ninety-oneeyesof80patientswithnewlydiagnosedwetAMDwereretrospectivelystudied.Alleyesweretreatedwitharoundofthreemonthlyintravitrealbevacizumabinjections,followedbyoneadditional’bonus’injectionafterresolutionofCNVactivity.Duringfollow-up,eyesweremonitoredwithfluoresceinangiography,opticalcoherencetomography,andbest-correctedvisualacuity(BCVA).IncaseofrecurrencesofCNVactivity,eyeswereretreatedwithotherroundsofbevacizumabinjectionsfollowingthesametreatmentprotocol.RESULTS:Overamedianfollow-upof532d,themedianresolutiontimeofCNVactivityinthefirst,second,andthirdtreatmentroundwas98d,126d,and111d,respectively.Themedianrecurrencetimeforthethreeroundswas154d,126d,and151d,respectively.Nosignificantdifferenceinresolutiontime(P=0.09)orinrecurrencetime(P=0.11)wasdetectedamongtreatmentrounds.Age(P=0.0082)andlensstatus(P=0.035)werefoundtobeassociatedwithCNVresolution;forevery1-yearincreaseinagetherewas4%greaterchanceofCNVresolution;Phakiceyesdemonstrateda33%betterchancetoexperienceCNVresolutionthanpseudophakiceyes.ForCNVrecurrence,lensstatus(P=0.0009)andgender(P=0.0446)werefoundtobepredictive;pseudophakiceyeshada3.69-foldgreaterrisktoexperiencerecurrenceofCNVactivitycomparedtophakiceyes;maleshada2.19-foldgreaterrisktoexperiencerecurrenceofCNVactivitythanfemales.NosignificantBCVAchangesamongthreetreatmentroundswerenoted(P=0.56).CONCLUSION:ResolutiontimeandrecurrencetimeofCNVactivitywerenotsignificantlydifferentamongtreatmentrounds,suggestingabsenceoftachyphylaxistobevacizumab.Acautiousdecisionshouldbemadeupondisco

  • 标签: BEVACIZUMAB AGE-RELATED MACULAR DEGENERATION recurrence anti-vascular
  • 简介:AIM:ToevaluatetheefficacyofSeprafilmtransplantationfollowingadhesiolysisforpreventingpostoperativereadhesionandimprovingsurgicaloutcomes.METHODS:Primaryblepharoplastywascarriedoutonbotheyelidsof18albinorabbits.After2weeks,anewskinincisionwasmade,andadhesiolysiswasperformedonbotheyelids.Therabbitswerecategorizedintotwogroups,onewithadhesiolysisaloneinthelefteyelid(controlgroup),andtheotherwithadhesiolysiswithaSeprafilmgraftintherighteyelid(Seprafilmgroup).Thedegreesofinflammationandfibrosiswereexaminedwithhematoxylin-eosin(HE)andMasson’strichromestains.Expressionofα-smoothmuscleactin(α-SMA)wasalsoimmunohistochemicallyexamined.RESULTS:Eyelidexaminationimmediatelyaftertheoperationrevealedmildswellingandhemorrhageinbothgroups,butthesesymptomsresolvedafter1week-2weeks,andeyelidshapehadrecoveredcompletelyinbothgroups.MicroscopicassessmentsdemonstratedthattheSeprafilmgroupshowedlessinflammationandfibrosisthanthecontrolgroup.TheSeprafilmgroupalsoexhibitedfewerα-SMA-positivecellsthanthecontrolgroup.CONCLUSION:Basedonthesefindings,weconcludethatSeprafilmgraftwithadhesiolysisisaneffectivemethodforpreventingpostoperativereadhesionsaftereyelidsurgery.

  • 标签: SEPRAFILM ADHESION adhesiolysis
  • 简介:AIM:ExcessivedissolveofcornealtissueinducedbyMMPswhichwereactivatedbycytokinsandchemokineswillleadtocornealulcer.ThemolecularmechanismofLipoxinA4(LXA4)oncornealcollagendegradationinthreedimensionswasinvestigated.·METHODS:Rabbitcornealfibroblastswereharvestedandsuspendedinserum-freeMEM.TypeIcollagen,DMEM,collagenreconstitutionbufferandcornealfibroblastsuspensionweremixedonice.Theresultantmixturesolidifiedinanincubator,afterwhichtestreagentsandplasminogenwasoverlaidandthecultureswerereturnedtotheincubator.Thesupernatantsfromcollagengelincubationswerecollectedandtheamountofhydroxyprolineinthehydrolysatewasmeasured.ImmunoblotanalysisofMMP-1,-3andTMMP-1,-2wasperformed.MMP-2,-9wasdetectedbythemethodofGelatinzymography.Cytotoxicityassaywasmeasured.RESULTS:LXA4inhibitedcornealcollagendegradationinadoseandtimemanner.LXA4inhibitedtheIL-1βinducedincreasesinthepro-MMP-1,-2,-3,-9andactiveMMP-1,-2,-3,-9inaconcentrationdependentmanner.LXA4alsoinhibitedtheIL-1βinducedincreasesinTIMP-1,-2.CONCLUSION:Asapotentanti-inflammationreagent,LXA4caninhibitcornealcollagendegradationinducedbyIL-1βincornealfibroblaststhusinhibitingcornealdissolvingpathologyprocess.

  • 标签: LXA4 IL-1Β CORNEA COLLAGEN DISSOLUTION
  • 简介:·AIM:Toinvestigatethetherapeuticeffectsofnanophtha-locyaninephotosensitizersonanexperimentalratchoroidalneovescularization(CNV)model,aswellastoevaluatethecytotoxicityofwhichonhumanretinalpigmentepithelia(HRPE)andhumanretinalendothelialcells(HRECs).·METHODS:Twotypesofphotosensitizers,G1-ZnPc(COOH)8andG1-ZnPc(COOH)8/mrespectively,wereadministratedforphotodynamictherapy(PDT)afterasuccessfulestablishmentofCNVmodelonBrown-Norway(BN)ratsviafundusphotocoagulation.Thetherapeuticeffectsofthetwodrugswereassessedthroughopticalcoherencetomography(OCT),fluoresceinfundusangiography(FFA)andtransmissionelectronmicroscopy(TEM).Forcytotoxicitytests,cellcountingkit-8(CCK-8)assaysandchangesofmitochondrialtransmembranepotential(△Ψm)wereconductedonHRPEandHRECsafterinitialuptakeofthetwodrugs.·RESULTS:Bothphotosensitizersdemonstratedanimprove-mentofvascularleakageandclosureofCNV1weekafterPDTasconfirmedbyfundusimage,OCT,FFAandTEM.TwoweeksafterPDT,G1-ZnPc(COOH)8/mshowedabetterCNVclosureeffectversusG1-ZnPc(COOH)8(P<0.05).Asignificantdifference(P<0.01)wasfoundinuptakeofthetwodrugsinHRPEandHRECs,withnodifferencebetweenthedrugs(P>0.05).BothphotosensitizersshowedcytotoxicityonHRPE,butG1-ZnPc(COOH)8/minducedalowercellviability.·CONCLUSION:G1-ZnPc(COOH)8/mmediatedPDTisbetterthanG1-ZnPc(COOH)8inCNVclosureandalsohavetheadvantageoffastmetabolismleadingtolesssideeffect.·

  • 标签: PHTHALOCYANINE carrier nanoparticles photo-dynamic treatment RETINA
  • 简介:<正>DearSir,IamDr.Jing-WenGong,fromtheDepartmentofOphthalmology,ZhejiangProvincialPeople’sHospital,Hangzhou,China.Iwritetopresentapeculiarcasereportofjerkysee-sawnystagmusininternuclear

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  • 简介:由于众所周知原因,“近三十年诗歌”在2008年成为了一个被热议命题。尽管从社会政治背景出发看待文学多有局限和盲区,诗歌本身自有运变轨迹与规律,一个政治化时间段落并不见得是考察诗歌最佳标尺,但考虑到大环境所提供条件,以及这个时期文学与现实政治特殊紧密关系,做这样考察也非完全没有意义。

  • 标签: 诗歌 概观 生长 社会政治 现实政治 政治化
  • 简介:AIM:Tostudytheimpactofscleralflapposition,underwhichtheposteriorchamberintraocularlenses(PC-IOL)weresulcus-fixedbytrans-scleralsuture,oncorneaastigmatism.METHODS:Twenty-sixaphakicorcataracteyeswerecomprisedinthisprospectivenoncomparativecaseseriesstudy.Eleveneyeshadtraumaticcataractremovedwithoutsufficientcapsularsupport,3hadblunttraumawithsubluxatedtraumaticcataract,8hadundergonevitreoretinalsurgeryand4hadcongenitalcataractremoved.Theaverageagewas54years(range21-74years),with17menand7women.ThefoldablePC-IOLwasfixedinsulcusbytrans-scleralsuture.TheincisionforIOLimplantationwasmade1mmposteriortolimbusalongthesteepestmeridianofcornea,whilescleralflapstoburytheknotsoftrans-scleralsutureweremadealongtheflattestmeridian.Allthesurgerieswereperformedbyasingledoctor(MaL),andthefollowupwasatleast13months(range13-28months).Thepreoperative,3monthsand1yearpostoperativecornealcurvaturealongthesteepestandflattestcorneameridianandoverallcorneaastigmatismwerecompared.RESULTS:Thecurvaturealongthesteepestmeridianchangedfrom44.25±2.22Dpreoperativelyto44.08±2.16Dat3monthspostoperatively,and43.65±5.23Dat1yearpostoperatively(P>0.05);thecurvaturealongtheflattestmeridianchangedfrom41.24±2.21Dpreoperativelyto43.15±3.94Dat3monthspostoperatively,and42.85±5.17Dat1yearpostoperatively(P<0.05);andthesurgeryinducedastigmatism(SIA)oncorneawascalculatedbyvectoranalysis,whichwas2.42±2.13Dat3monthspostoperatively,and2.18±3.42Dat1yearpostoperatively,thedifferencewasstatisticallysignificant(P<0.05).CONCLUSION:Thescleralflapmadealongtheflattestmeridian,underwhichtheposteriorchamberintraocularlenses(PCIOL)weresulcus-fixedbytrans-scleralsuture,cansteepenthecorneainvaryingdegrees,thusreducingpreexistingcornealastigmatism.

  • 标签: INTRAOCULAR lens SUTURE FIXATION ASTIGMATISM lack
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  • 简介:我们是建平县第三小学学前大班付秋然爷爷奶奶。每期画报发到小孙子手里.我们都会陪他一起读。孩子最开始会把注意力放到生动图画上面,可是时间一长.他就被我们所读内容吸引了。

  • 标签: 《我的地盘听我的》 小学生 作文 语文学习
  • 简介:学习目标:小班学会把相同宽窄对象配对。中班学会比较宽与窄。大班学会从宽到窄排列顺序。

  • 标签: 学习目标 排列顺序 学会
  • 简介:从汉语言文学语法来解释:“”是通用,可以作为、地、替代语,日常都可以通用。

  • 标签: 用法 汉语言文学 “的” 通用
  • 简介:再次站在母校大门口。仿佛又看到了那个初次来到新学校,激动地大声呼喊“高中,我来了!”小女生;看到了那个在早晨教学楼前背书时用手背挡在眼前,似乎要握住全世界阳光女孩;看到了那个偶尔坐在楼梯间发呆姑娘……呵呵,曾经自己怀揣着一份少年狂傲,一份青春执著,走入了高三。

  • 标签: 《我的无悔的青春》 中学生 语文学习 阅读
  • 简介:海德格尔著作中神深奥晦涩。透过对他思想整体方向把握,我们发现,在海德格尔这里,最后神是救渡人出离"存在离弃状态"之困境神,但他不是基督教上帝,上帝反倒是走向无神虚无主义起源。海德格尔敏锐地看到,近代以来人作为主体并未因脱离上帝而变得自由,反而精神贫困,无能于思考,无能于真理,人无根地生存。与此相对,海德格尔神召唤人出离困境从而踏上返乡之途。这种神有自己"面目"和出场方式,但他不是不缺乏任何存在最高存在者,甚至也不是存在自身。神不是神化的人,但人却从神获取尺度,成为"半神",在"家乡"中人共神同在。这种神是人确立自己本质必经之途和最短而最陡峭路径。这种非神学神打开了思考神性和人性另一条路。

  • 标签: 人的本质 存在历史 居有
  • 简介:那天上午,老余电话来,说“老爷子不在了”。我一时恍惚,觉得特别的意外。因为,就在前一天中午,他还乐呵呵地给我打手机,让我帮他找多年前写金庸一篇文章,他说他观点还能立得住,他要一个电子版。竟然就是这么快,前后相隔,不到二十四小时,仁健先生就走了,阴阳两界,让人痛感无常。

  • 标签: 生命 电子版
  • 简介:<正>1.所谓“O()V()N”指这种偏正短语:a.语言运用角度b.语言运用角度c.语言运用角度d.语言运用角度我们用“O”代表动词语“V”(“运用”)前V”受事成分(“语言”),“N”代表“V”后那个名词语(“角度”),括号里”表示有时出现,有时不出现。本文想要探讨是如何分析“O()V()N”内部层次关系。层次关系不同,该短语所属类型自然也就不同。例拿a来说,下面的切分表示这是一个带有多层定语偏正短语:a1语言运用角度而下面的切分则表示这是一个由偏正短语充当定语偏正短语:a2语言运用角度

  • 标签: 偏正短语 语言运用 内部层次 层次关系 词语 多层定语
  • 简介:班上有64个同学,身高都有一些微小差异。让他们排成8行8例方阵。如果从每一行8个同学中挑出一个最高,那么在挑出8个同学中一定有一个最矮同学A。让这些同学回到各自原来位置站好后,

  • 标签: 中学生 语文学习 阅读 《最高的与最矮的》
  • 作者: 佚名
  • 学科: 文学
  • 创建时间:2009-09-08
  • 简介:谢林上帝概念是与他自由概念分不开,谢林将人自由奠基于上帝自由之中,  谢林自由概念独特性不仅在于它

  • 标签: 自由概念 谢林自由
  • 简介:谢林自由概念是一个哲学与神学综合性概念,自由体系至少存在于上帝理智之中,而人自由又基于上帝之中

  • 标签: 自由概念 谢林自由