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500 个结果
  • 简介:·AIM:ToexploretheimmunomodulatoryeffectsofcurdlanoninnateimmuneresponsesagainstAspergillusfumigatus(A.fumigatus)inculturedhumancornealepithelialcells(HCECs),andwhetherC-typelectinreceptorDectin-1mediatestheimmunomodulatoryeffectsofcurdlan.·METHODS:TheHCECswerestimulatedbycurdlanindifferentconcentrations(50,100,200,400μg/mL)forvarioustime.ThenHCECspretreatedwithorwithoutlaminarin(Dectin-1blocker,0.3mg/mL)andcurdlanwerestimulatedbyA.fumigatushyphae.ThemRNAandproteinproductionoftumornecrosisfactor-α(TNF-α)andinterleukin-6(IL-6)weredeterminedbyreal-timequantitativepolymerasechainreactionandenzyme-linkedimmunosorbentassay,respectively.TheproteinlevelofDectin-1wasmeasuredbyWesternblot.·RESULTS:CurdlanstimulatedmRNAexpressionofTNF-αandIL-6inadoseandtimedependentmannerinHCECs.CurdlanpretreatmentbeforeA.fumigatushyphaestimulationsignificantlyenhancedtheexpressionofTNF-αandIL-6atmRNAandproteinlevelscomparedwithA.fumigatushyphaestimulationgroup(P<0.05).BothcurdlanandA.fumigatushyphaeup-regulatedDectin-1proteinexpressioninHCECs,andDectin-1expressionwaselevatedto1.5-to2-foldbycurdlanpretreatmentfollowedhyphaestimulation.TheDectin-1blockerlaminarinsuppressedthemRNAexpressionandproteinproductionofTNF-αandIL-6inducedbycurdlanandhyphae(P<0.05).·CONCLUSION:ThesefindingsdemonstratedthatcurdlanpretreatmentenhancedtheinflammatoryresponseinducedbyA.fumigatushyphaeinHCECs.Dectin-1isessentialfortheimmunomodulatoryeffectsofcurdlan.Curdlanmayhavehighclinicalapplicationvaluesinfungalkeratitistreatment.

  • 标签: CURDLAN DECTIN-1 INNATE immunity Aspergillus FUMIGATUS
  • 简介:患者女,14岁.因左鼻塞,流鼻涕1wk,发烧4d,左眼睑红肿、恶心、呕吐2d,于1995年7月16日急诊入院.专科检查:左眼睑上方压痛(+),左眼内眦部压痛(±),睑压痛(-),左眼周围红肿,颜面部肿胀,左眼球向下移位,运动受限,视物模糊,球结膜充血、水肿,较右眼明显突出,对光反射减弱.左中鼻甲大,中鼻道有较多脓性物,左筛窦区及上颌窦区压痛(+).住院诊断:左急性鼻窦炎,眶内蜂窝织炎,疑海绵窦炎.

  • 标签: 蜂窝织炎 上颌窦炎 眼睑脓肿 眶内 麻黄素滴鼻剂 1995年
  • 简介:患者男性,20岁,于2008年7月我院行准分子激光原位角膜磨镶术手术.术前查屈光度:右眼-4.75DS-0.75DC×16°→1.0;左眼-5.0DS-0.5DC×159°→1.0.角膜厚度:右眼575μm,左眼582μm.角膜曲率:右眼K140.5D,K239.4D,左眼K140.9D,K240.3D.手术使用博士伦Z217型准分子激光治疗仪,采用Hansatome角膜板层刀制作角膜瓣,角膜瓣厚度110μm,蒂位于角膜上方,患者手术一切顺利,无游离角膜瓣及其他瓣并发症.

  • 标签: 准分子激光原位角膜磨镶术 角膜瓣厚度 Hansatome角膜板层刀 准分子激光治疗仪 术后 角膜厚度
  • 简介:MicroRNAs(miRNAs)是一类长18~25个核苷酸单链非编码小分子RNA,属于表观遗传学范畴,广泛存在于真核细胞中,通过其表达上调和下调,影响细胞分化、增殖、凋亡,肿瘤发生,机体代谢以及衰老等生命过程。近年来有研究发现,miRNAs眼部晶状体中也有表达,其表达异常可能与年龄相关性白内障(ARC)有密切关系。本文主要就miRNAs与ARC相关性研究进展作一综述。

  • 标签: MICRORNAS 晶状体 靶基因 年龄相关性白内障
  • 简介:为探讨迷路老化过程,应用透射电镜观察了新生、青年、老年豚鼠耳蜗迷路血管系统变化。发现老年豚鼠血浆成分有改变、听力呈下降倾向;毛细胞、迷路血管及螺旋神经螺旋神经节细胞均可见一系列损害。作者推测耳蜗老化过程中血管系统变化非常重要,至少是耳蜗其他部位老年性改变原因之一。

  • 标签: 老年聋 耳蜗 血管系统 超微结构
  • 简介:手法小切口白内障术(manualsmallincisioncataractsurgepy,MSICS)特别是发展中国家已广泛应用于临床手术。本文旨在比较传统白内障囊外摘除术(extracapsularcataractextraction,ECCE)、MSICS以及超声乳化白内障吸除术治疗效果以及安全性(术中并发症以及术后并发症)。通过使用PubMed搜索引擎,我们收集了传统ECCE、MSICS以及超声乳化白内障吸除术相关文献,以评价其安全性治疗效果。同时,也参考了国内出版相关文献。结果发现,与超声乳化白内障吸除术相比,传统ECCE以及MSICS也取得了很好治疗效果,并且具有并发症少等优点。MSICS不需要依赖昂贵仪器,并且具有手术快速、费用低廉以及技术门槛低等特点,特别适用于硬核白内障治疗。虽然白内障手术治疗过程中MSICS需要一定技术耐心,但它仍然是一种安全、有效、经济治疗手段,特别是发展中国家可以替代超声乳化进行白内障治疗。

  • 标签: 白内障手术 手法小切口白内障术 超声乳化白内障吸除术 白内障囊外摘除术
  • 简介:AIM:Todeterminewhethersinglenucleotidepolymorphism(SNP)rs641153isassociatedwiththeriskofage-relatedmaculardegeneration(AMD),weperformedasystematicmeta-analysisof15eligiblestudies.SNPinthecomplementfactorB(CFB)geneisconsideredtohavesignificantassociationwithAMDsusceptibility,butthereisgreatdiscrepancyintheseresults.METHODS:TheeligiblestudieswereidentifiedbysearchingthedatabasesofPubMed,EMBASE,andWebofScience.Oddsratios(ORs)with95%confidenceintervals(CIs)wereusedtoassesstheassociation.AlldatawereanalyzedusingStatasoftware.RESULTS:Theassociationbetweenrs641153andAMDriskwasstatisticallysignificantunderthehomozygousmodel(AAvsGG:OR=0.26,95%CI=0.15-0.45,P_h=0.973,/~2=0.0%,fixedeffects),dominantmodel(AA+GAvsGG:OR=0.49,95%CI=0.40-0.59,P_h=0.004,/~2=56.4%,randomeffects)andrecessivemodel(AAvsGA+GG:OR=0.30,95%CI=0.17-0.51,R_n=0.983,I~2=0.0%,fixedeffects).Thesameresultswerealsoobservedinthestratifiedanalysesbyethnicity,sourceofcontrolandsamplesize.CONCLUSION:Ourmeta-analysissuggeststhatrs641153intheCFBgenemayplayaprotectiveroleinAMDsusceptibility,thelateAMDinparticular,bothinCaucasiansandinAsians.

  • 标签: COMPLEMENT factor B rs641153 AGE-RELATED MACULAR
  • 简介:目的探讨桥小脑角疾病相位平衡快速梯度回波(Balance-FastFieldEcho,B-FFE)序列MRI影像学特点,评价B-FFE序列桥小脑角疾病诊断价值.方法应用B-FFE序列136例桥小脑角病变者(三叉神经痛131例、半面痉挛5例)进行MRI检查,观察桥小脑角神经、血管、肿瘤显像情况,并与手术中资料进行比较.结果131例三叉神经痛患者中,117例为原发性三叉神经痛,MRI显示有血管压迫者102例,术中证实有血管压迫者95例,行显微血管减压+神经梳理术;14例为继发性三叉神经痛,均为桥小脑角占位性病变,术后病理证实7例为胆脂瘤,2例为听神经瘤,5例为脑膜瘤;5例半面痉挛患者MRI显示有血管压迫,术中证实有血管压迫,并予以血管减压.结论B-FFE序列MRI成像能清楚显示桥小脑角区三叉神经、面神经与血管关系及是否有占位性病变,诊断、术前评估指导治疗有重要意义.

  • 标签: 桥小脑角疾病 磁共振成像 三叉神经痛 血管压迫
  • 简介:目的:比较波前像差仪与主观验光法屈光度检查结果,探讨波前像差仪低阶像差测量可靠性准确性。方法:2007-07/2007—10我院拟行准分子激光角膜屈光手术患者88例168眼,分别使用以Hartmann—Shack原理为基础设计德国蔡司WASCA波前像差仪分析系统以及主观插片验光方法进行检查,并近视球镜、近视柱镜、散光轴向结果比较、分析。结果:波前像差仪与主观验光测量屈光度较为接近,等效球镜度分别为_6.53±1.64D_6.44±1.89D;近视球镜度分别为-5.93±1.65D-5.83±1.80D;近视柱镜度分别为-1.22±0.66D-1.27±0.70D;散光轴向度分别为110.67±75.69°119.24±74.21°;四组数据统计学分析均无显著性差异(P〉0.05)。结论:波前像差仪无需散瞳情况能够较为准确地反映眼屈光度情况。

  • 标签: 波前像差 主观验光 屈光度
  • 简介:目的:用过碘酸雪夫氏(PeriodicAcid-Schiff,PAS)染色法比较4%多聚甲醛固定液、4%戊二醛固定液Davidson固定液固定豚鼠眼球固定效果,筛选最佳眼球固定液固定时间。方法:取正常豚鼠眼球分6组,每组5只,I组眼球放入4%多聚甲醛固定液固定24h、域组眼球放入4%戊二醛固定液固定24h;Ⅲ~V组眼球放入Davidson固定液分别固定3、6、24h;遇组眼球Davidson固定液中固定3h后转移到10%中性甲醛中再固定48h。常规制片、PAS染色、显微镜观察,比较不同固定方法组织固定效果。结果:Davidson固定液固定3h固定效果最为理想,Davidson固定液固定3h后转移到10%中性甲醛再固定48h固定效果与Davidson固定液固定3h固定效果接近,这两组固定液固定眼球切片均结构完整、层次清晰,视网膜各层细胞排列整齐。结论:Davidson固定液豚鼠眼球固定效果明显优于其他两种固定液,豚鼠眼球用Davidson固定液固定后,可将其转移到中性甲醛中长期保存,其固定效果不受影响

  • 标签: 固定液 眼球 PAS染色 Davidson固定液
  • 简介:AIM:Toevaluatetheepidemiologic,anatomic,andclinicalfeaturesofopenglobeinjuriesinchildren.METHODS:Themedicalfilesofpatientsundertheageof16whohadbeenoperatedforanopenglobeinjuryatAkdenizUniversityHospital’sDepartmentofOphthalmologywereretrospectivelyevaluated.RESULTS:Atotalof90patientswereevaluatedinthisstudy.Amongthesepatients,26(28.9%)werefemaleand64(71.1%)weremale.Themeanageofthepatientswas7.7±4.2years.Themale/femaleratiowasobservedtoincreasewithincreasingage(P=0.006,P=7.48).Injuriesweremostlikelytooccurinspringandautumn(P=0.028).Thetimeintervalbetweentheinjuryandthesurgicalrepairwas9.36±27.4h.Forty(44.4%)oftheinjuriesoccurredinthehome,27(30%)occurredintheyard,and21(23.3%)happenedwhileplayinginthestreet.Themostcommoncausesofinjuryweresharpmetalobjects(P<0.001).Injurytothecorneaoccurredin47(52.2%)ofthepatients(P<0.001).Themostcommoncomplicationtooccurwascataractformation.Additionaloperationswerenecessaryfor37(41.1%)ofthepatients.Thefinalvisualacuitywascorrelatedwithboththeinitialvisualacuityofthewoundedeyepriortosurgeryandthelengthofthewound(P<0.001,r=0.502andP<0.001,r=-0.442,respectively).CONCLUSION:Openglobeinjuriesthataresufferedinchildhoodgenerallyoccureitherathome,intheyard,oronthestreet,withsharpmetalobjectsbeingthemostcommoncauseofinjury.Theinitialvisualacuityandthelengthofthewoundarethemostimportantdeterminantsofthefinalvisualacuity.

  • 标签: CHILDHOOD EPIDEMIOLOGY open globe INJURY PREVENTION
  • 简介:泪道阻塞是眼科门诊常见病之一,常见症状有溢泪、溢脓等,给患者带来较大痛苦。该病过去有挂线、泪道探通、泪道激光成形术、泪囊鼻腔吻合术、泪囊摘除术等方法,各有优缺点。我院自2011年1月起采用鼻内镜Crawford管置管治疗泪道阻塞患者,取得了初步治疗效果。

  • 标签: 泪道阻塞 置管治疗 鼻内镜下 临床分析 泪道激光成形术 泪囊鼻腔吻合术
  • 简介:目的分析个性化角膜切口对白内障术后角膜散光及裸眼视力影响。方法90例(106眼)白内障患者分为2组,试验组选择位于角膜最大屈光度径线上透明角膜切口,对照组选择11:00处透明角膜切口,行白内障超声乳化人工晶状体植入术。术前及术后1周、1个月、3个月分别检测患者角膜散光及视力情况。结果术后1个月3个月试验组裸眼视力分别为(4.9±0.15)、(5.0±0.15),显著优于对照组(4.8±0.18)、(4.8±0.20),差异有统计学意义(P〈0.05)。术后1个月3个月试验组角膜散光度分别为(0.78±0.39)、(0.79±0.40),明显低于对照组(1.53±0.32)、(1.52±0.28),差异有统计学意义(P〈0.05)。结论白内障患者术前大多存在〈1.5D角膜散光。采用个性化角膜切口可降低白内障手术角膜源性散光,术后视力恢复,是一种简便、可行手术切口。(中国眼耳鼻喉科杂志,2013,13:168—169,172)

  • 标签: 个性化角膜切口 白内障 角膜散光
  • 简介:·Thetherapeuticeffectofselenium(Se)hasalreadybeenproveninthyroiddiseaseandthyroidassociatedophthalmopathy(TAO).InspiteofclearscientificproofofitsbenefitsinTAO,thereappearstobenoclearagreementamongthecliniciansregardingitsoptimumdose,durationofthetreatment,efficacyandsafetytodate.Inthisreview,theauthorsummarisesthefindingsof135Englishlanguagearticlespublishedonthissubjectoverthepastfourdecadesfrom1973to2013.TheregulationandmetabolismofthyroidhormonesrequireasteadysupplyofSeandrecentstudieshaverevealedseveralpossiblemechanismsbywhichSeimprovestheseverityofthyroiddiseaseandTAO.Thesemechanismsinclude1)inhibitoryeffectofHLA-DRmoleculeexpressiononthyrocytes;2)profoundreductionsofthyroidstimulatinghormone(TSH)receptorantibodies(TSHR-Ab)andTPOantibodies(TPO-Ab);3)preventionofdysregulationofcell-mediatedimmunityandBcellfunction;4)neutralisingreactiveoxygenspecies(ROS)andinhibitionofredoxcontrolprocessesrequiredfortheactivation,differentiationandactionoflymphocytes,macrophages,neutrophils,naturalkillercellsinvolvedinbothacuteandchronicorbitalinflammationinTAO;5)inhibitionofexpressionofproinflammatorycytokinesand6)inhibitionofprostaglandinandleukotrienesynthesis.AnincreasedoxidativestresshasbeenobservedinbothacuteandchronicphasesofthyroiddiseasewithraisedtissueconcentrationsofROS.ThebenefitsofSesupplementationinindividualswithTAOappeartobeproportionatetothedegreeofsystemicactivityofthethyroiddisease.ThemaximalbenefitofSesupplementationisthereforeseeninthesubjectswhoarehyperthyroid.RestorationofeuthyroidismisoneofthemaingoalsinthemanagementofTAOandwhenanti-thyroiddrugsarecombinedwithSe,thepatientswithGraves’disease(GD)andautoimmunethyroiditis(AIT)achievedeuthyroidismfasterthanthosetreatedwithanti-thyroiddrugsalone.SestatusofnormaladulthumanscanvarywidelyandSe

  • 标签: SELENIUM SELENOPROTEINS THYROID ASSOCIATED OPHTHALMOPATHY Graves’
  • 简介:目的:探讨儿童瞬目症BUT情况,为临床治疗提供依据。方法:215例患者均排除全身疾患,检查角膜、结膜、屈光不正等,着重检查BUT,详细了解患者病史,不良生活习惯等,治疗上停用含有防腐剂及激素类滴眼液,避免及纠正不良卫生及生活习惯,心理治疗,合理用眼,矫正屈光不正,给予不含防腐剂滴眼液点眼,如3g/L艾丽滴眼液3次/d点眼,需用抗生素给予可乐必妥滴眼液3~4次/d点眼,酌情给予抗病毒及维生素类药物。结果:215例患者BUT小于10s者197例(91.6%)326眼,其中5S以下123例224眼。本组215例病例中经过7~28d治疗,173例(80.5%)治愈,37例(17.2%)好转,5例(2.3%)无效,均未患眼部疾病,且不配合治疗,仍每天看电视或玩电脑游戏2h以上。经治疗BUT正常者192例(89.3%),好转19例(8.8%)无效者4例(1.9%)。随访1~6mo,复发31例,均为长期看电视、玩电脑、习惯揉眼者,BUT检查再次异常者,重复治疗后治愈或好转。结论:泪膜保持并发挥其生理功能与瞬目动作休息相关,我们认为泪膜稳定性差是瞬目症另一重要因素,BUT检查在诊治儿童瞬目症中起着关键作用,它可以正确指导医生合理用药,使患者早日康复,而且简单易行,无痛苦,儿童易接受。我们建议BUT可作为儿童瞬目症常规检查。

  • 标签: BUT 儿童瞬目症 检查
  • 简介:目的研究传入神经物质-谷氨酸小鼠耳蜗Corti器中表达。方法应用免疫组化技术简洁而又成功地光镜小鼠游离耳蜗Corti器中谷氨酸进行定位。结果显示小鼠耳蜗内,外毛细胞染色阳性,染色颗粒细而均匀。克服了谷氨酸神经递质用传统常规前包埋染色技术电镜下不能显示缺点。结论证实谷氨酸是毛细胞传入性神经递质。

  • 标签: 谷氨酸 免疫组化技术 耳蜗游离Corti器
  • 简介:AIM:ToinvestigatetheeffectofintravitrealinjectionofDL-alpha-aminoadipicacid(DL-α-AAA)onocularrefractivestateandretinaldopamine,transforminggrowthfactor-β2(TGFβ2),vasoactiveintestinalpolypeptide(VIP)inguineapigform-deprivedmyopia.METHODS:Four-week-oldpigmentedguineapigswererandomlyassignedto4groups:normalcontrol,deprivation,deprivationplusDL-α-AAA,deprivationplussaline.Formdeprivationwasinducedwiththeself-madetranslucenteyeshields,andlastedfor14days.8μgDL-α-AAAwasinjectedintothevitreouschamberofdeprivedeyes.Thecornealradiusofcurvature,refractionandaxiallengthweremeasured.Retinaldopaminecontentwasevaluatedbythehigh-performanceliquidchromatographywithelectrochemicaldetection,andTGFβ2andVIPproteinweredetectedbyWesternblotting.RESULTS:Fourteendaysofeyeocclusioncausedtheaxiallengthtoelongateandbecomemyopicintheform-deprivedeyes,withthedecreaseofretinaldopamineandtheincreaseofTGFβ2andvasoactiveintestinalpolypeptide(VIP)protein.IntravitrealinjectionofDL-α-AAAcouldinhibitthemyopicshiftfrom(-3.65±1.06)Dto(-1.48±0.63)D,P<0.01duetogogglesoccludingandcausethedecreaseofretinalTGFβ2proteininthedeprivedeyes.However,intravitrealinjectionofDL-α-AAAhadnosignificanteffectonretinaldopamineandVIPproteinindeprivedeyes.RetinalTGFβ2proteincorrelatedhighlywiththeocularrefraction(y=-3.34+0.31/x,F=74.75,P<0.001)andaxiallength(y=8.39-0.02/x,F=48.32,P<0.001)indifferenttreatmentgroups.·CONCLUSION:IntravitrealinjectionofDL-α-AAAiseffectivelyabletosuppressthedevelopmentofformdeprivationmyopia,whichmaybeassociatedwithretinalTGFβ2proteininguineapigs.

  • 标签: DL-alpha-aminoadipicacid form-deprivation MYOPIA TGFΒ2 Müller cell
  • 简介:Nd:YAG激光是一项简易有效后发性白内障治疗手段,人们对于其各类并发症也有了系统认识研究。但Nd:YAG激光治疗后发性自内障导致黄斑裂孔这一并发症临床十分罕见,现将我院Nd:YAG激光治疗后发性白内障导致黄斑裂孔1例报告如下。

  • 标签: ND:YAG激光治疗 后发性白内障 激光治疗术 黄斑裂孔 并发症
  • 简介:<正>眼眶原发性非霍奇金恶性淋巴瘤(non-Hodgkinlymphoma,NHL)罕见,而与鼻外伤相关NHL临床少有报告。现报道本院收治1例如下。患者,男性,14岁。因鼻外伤后右内眦部肿胀1个月入院。患者于1个月前因打球致鼻部受伤,当时鼻腔少量出血、疼痛甚剧自行作简单止血处理。1周后因鼻部肿胀,在当地医院诊断为"鼻骨骨折",行

  • 标签: 非霍奇金恶性淋巴瘤 原发性 鼻外伤 眼眶 鼻骨骨折 肿胀