简介：AIM:ToinvestigatetheinterferingeffectofY-27632,aROCK-Iselectiveinhibitor,onthesignaltransductionpathwayoftransforminggrowthfactor-β1(TGF-β1)inocularTenoncapsulefibroblasts(OTFS)invitro.METHODS:AfterOTFSfrompassages4to6invitrowereinducedbyTGF-β1andthentreatedbyY-27632,thechangesoftheOTFScellcycleswereanalyzedviaflowcytometry,andtheproteinsexpressionoftheα-smoothmuscularactin(α-SMA),connectivetissuegrowthfactor(CTGF),collagenIwerecalculatedbyWesternblot.AfterOTFStreatedbythedifferentconcentrationsofY-27632,theexpressionlevelsoftheα-SMA,CTGFandcollagenImRNAwereassayedbyRT-PCR.RESULTS:Y-27632hadnomarkedlyeffectontheOTFScellcycles.AftertreatedbyTGF-β1,OTFSinG1periodsignificantlyincreased.ThecellcyclesdistributionbybothTGF-β1andY-27632hadnoremarkabledifferencefromthatincontrolgroup.Y-27632significantlyinhibitedtheproteinsexpressionsofbothα-SMAandCTGF,whiletosomeextentinhibitedthatofcollagenI.TGF-β1significantlypromotedtheproteinsexpressionsofα-SMA,CTGFandcollagenI.AfterOTFStreatedbybothTGF-β1andY-27632,ofα-SMA,theproteinexpressionwassimilarwiththatincontrolgroup(P=0.066>0.05),buttheproteinexpressionofCTGForcollagenI,respectively,wassignificantlydifferentfromthatincontrolgroup(P=0.000<0.01).Thedifferencesofexpressionsoftheα-SMA,CTGFandcollagenImRNAin30,150,750μmol/LY-27632groupwerestatisticallysignificant,comparedwiththoseincontrolgroup,respectively(α-SMA,P=0.002,0.000,0.000;CTGF,P=0.014,0.002,0.001;collagenI,P=0.003,0.002,0.000).CONCLUSION:BlockingtheRho/ROCKsignalingpathwaybyusingofY-27632couldinhibitthecellularproliferationandtheexpressionofbothCTGFandα-SMAwhateverOTFSinducedbyTGF-β1ornot.Y-27632suppressedtheexpressionofcollagenImRNAwithoutinduction.

简介：目的探讨重组内皮抑素(Endostatin)对兔角膜新生血管(cornealneovascularization,CNV)形成的影响.方法新西兰白兔18只,随机分为三组,每组6只12眼,采用角膜缝线法制备兔CNV模型,其中两组分别以浓度为10μg/ml、50μg/ml重组内皮抑素点眼,4次/d,连续19d,并以生理盐水点眼作对照.CNV生长面积采用计算机图像分析系统进行分析比较.结果10μg/ml、50μg/ml重组内皮抑素实验组自第7d开始CNV平均生长面积明显低于对照组(P＜0.05),两实验组CNV面积比较,差异无显著意义(P＞0.05).角膜组织病理学检查,实验组新生血管明显稀少,实验组与对照组炎性细胞成分及浸润程度相似.结论浓度10μg/ml、50μg/mlml重组内皮抑素具有明显抑制角膜新生血管生长的作用,而无毒副作用,为临床防治CNV提供了一种新的途径.

简介：AIM:Toinvestigatethelevelsofserumsolubleintercellularadhesionmolecules-1(sICAM-1)andneutrophilicexpressionofCD18inpatientswithvariousstagesofdiabeticretinopathyandtodeterminetheirdifferentexpressionpatterninthedevelopmentofdiabeticretinopathy(DR).·METHODS:LevelsofserumsICAM-1andCD18onthesurfaceofneutrophileweremeasuredin41DRpatients,theywereclassifiedinthreesubgroupsaccordingtothestageofretinopathyasdeterminedbyfund’sophthalmoscopy;10controlsubjectswerealsostudied.sICAM-1weremeasuredbyenzyme-linkedimmunosorbentassayandCD18byflowcytometry.·RESULTS:TheneutrophilicCD18expressionandserumsICAM-1levelwereallsignificantlyelevatedinalldiabeticsubgroupscomparedtocontrolsubjects(P<0.01).ThedifferencesofCD18andsICAM-1amongthediabeticsubgroupsweresignificantinCD18butnotinsICAM-1.TheprogressionofretinopathywasassociatedwithanincreasebothinCD18andinsICAM-1levelsbysimplecorrelationanalysis(β=0.74,P<0.001;β=0.38,P<0.01,respectively).ButstepwisemultipleregressionanalysisrevealedthatonlyCD18wasindependentdeterminantofretinopathy(β=1.04,P<0.01).·CONCLUSION:OurresultsconfirmthecontributionofendothelialandneutrophilicactivationinthedevelopmentofDRasindicatedbyincreasedlevelsofCD18andsICAM-1.However,adirectimplicationofCD18andICAM-1intheprogressionofDRcanbesupportedonlyintheCD18butnotICAM-1.CD18andICAM-1mayplaydifferentroleinthedevelopmentofdiabeticretinopathy.

简介：视网膜静脉阻塞（RVO）会出现缺血区，产生血管内皮生长因子（VEGF）。VEGF是视网膜和脉络膜新生血管形成的主要刺激物，它可以增加血管的通透性，引起黄斑水肿，严重影响视力。随着抗VEGF药物的出现，针对黄斑水肿的治疗取得良好效果。抗VEGF药物已经成为治疗RVO黄斑水肿的一线用药。

简介：~~

简介：·AIM:Toexploretheeffectofimmunizationwithcopolymer-1(COP-1)andretinalstemcells(RSCs)transplantationoninterferon-gamma(IFN-γ)levelsinaratexperimentalglaucomamodel.·METHODS:Anexperimentalglaucomawasinducedbyargonlaserphotocoagulationoftheepiscleralveinsandlimbalplexusintherighteyeofrats.Immediatelyfollowingglaucomainduction,ratswereimmunizedwithCOP-1.RSCswereculturedandtransplantedintravitreallyintotheeyesofglaucomamodelanimals1weekpost-lasertreatment.Sixexperimentalgroupswereused:COP-1/RSC,PBS/RSC,COP-1/PBS,PBS/PBS,glaucomamodelgroup,andanormalcontrolgroup.TheconcentrationofIFN-γinaqueoushumor(AH)andserumwasmeasuredbyenzyme-linkedimmunosorbentassay(ELISA)ineachofthesixgroups.Retinalganglioncell(RGC)survivalwasassessedbyquantifyingapoptosisusingHoechststaining.·RESULTS:ConcentrationsofIFN-γinAHandserumofratsthathadundergoneglaucomainductionwerehigherthanthoseofnon-inducedcontrolrats.TheconcentrationsofIFN-γinAHandserumoftheCOP-1/RSCstreatedgroupweredeterminedtobe2371.9ng/Land710.9ng/L,respectively,whichweresignificantlylowerthanthoseintheothertreatedgroups(P<0.05).Infact,IFN-γlevelsinthedualtreatedgroupwerereducedtobackgroundlevels.TheCOP-1/RSCgrouphadlowernumberofapoptoticRGCsthantheotherthreeexperimentalgroups(P<0.05).·CONCLUSION:ThereducedlevelsofIFN-γinAHandserumoftheCOP-1/RSCgroupmayberelatedtosynergisticeffectsbetweenRSCstransplantationandCOP-1immunemodulation.ItislikelythatthelowerlevelsofIFN-γpreventedRGCsglaucomatousapoptosis.·

简介：儿童眼球的生长、发育及稳定离不开眼球血管的发生和成熟。正常视网膜血管形成起始于血管生成（vasculogenesis）,终止于血管新生（angiogenesis）。促血管生成因子（pro-angiogenicfactors）和抗血管生成因子（anti-angiogenicfactors）共同作用调节血管新生的过程。缺氧和炎症等多种刺激可以导致病理性的血管新生[1]。

简介：目的：研究高氧诱导的视网膜新生血管模型鼠中转录因子Islet-1的表达差异。方法：采用高氧诱导的方法制作鼠视网膜新生血管模型,运用荧光造影视网膜铺片及视网膜切片苏木精-伊红染色观察视网膜新生血管的形态。于小鼠出生后第7,12,14,17,26d取视网膜组织,采用Real-timePCR及Westernblot技术测定视网膜组织中Islet-1的表达水平。结果：模型组视网膜铺片及组织切片可见大量视网膜新生血管形成。小鼠出生后第7d,模型组与正常组视网膜组织中Islet-1表达水平无明显差异；小鼠出生后第12～14d,模型组视网膜组织中Islet-1表达水平明显上调；出生后17d,模型组视网膜组织中Islet-1表达水平仍高于正常组；出生后26d,随着视网膜新生血管消退,视网膜组织中Islet-1表达水平降至正常水平。结论：模型鼠视网膜新生血管发生过程中,持续缺氧的视网膜组织通过增加转录因子Islet-1的表达,从而诱导视网膜新生血管的发生。

简介：1概述息肉样脉络膜血管病变（polypoidalchoroidalvasculopathy,PCV）目前被认为是新生血管性年龄相关性黄斑变性（age-relatedmaculardegeneration,AMD）的一种亚型或是一种独立的疾病,是以脉络膜异常分枝状血管网（branchingvascularnetwork,BVN）末端息肉样扩张灶（polyps）为特征的。

简介：糖尿病的发病率日益攀升,随之,严重影响患者视力的糖尿病性黄斑水肿（diabeticmacularedema,DME）的危害也日显严峻。如何治疗DME,提高患者生存质量成为医患共同关注的问题。1DME的基本机制糖尿病视网膜病变不管在非增殖期还是增殖期,都可出现黄斑水肿,黄斑区局部的微血管瘤渗漏可引起局灶性水肿,而后极部毛细血管的广泛渗漏则引起弥漫性黄斑水肿。

简介：糖尿病视网膜病变（diabeticretinopathy,DR）进入增殖期,出现玻璃体积血（vitreoushemorrhage,VH）、牵引性视网膜脱离（tractionalretinaldetachment,TRD）等,玻璃体切除术是临床干预的有效手段之一。但由于视网膜新生血管的存在,术中复杂且难以预估的出血,不仅干扰术者的手术视野,增加各种手术器械的更换频度,提高手术难度,延长手术时间,同时也对治疗的预后有着不可忽视的不良影响。

简介：随着建立在医学科学研究基础上认识的不断深入,血管内皮生长因子（vascularendothelialgrowthfactor,VEGF）被确认是脉络膜新生血管（choroidalneovascularization,CNV）发展过程中介导血管生成和血管通透性的主要原因[1-2]。目前所知的VEGF家族包括5个成员：VEGF-A、VEGF-B、VEGF-C、VEGF-D和胎盘生长因子，其中以VEGF-A最为活跃，并与血管生成、新生血管化和血管通透性增强密切相关。

简介：

简介：目的:通过测定糖尿病性白内障患者血清中糖代谢指标、胰岛素抵抗与房水和血清中炎症因子的水平,探讨其相关性。方法:随机选取我院2017-02/2018-01糖尿病性白内障患者69例(观察组)和白内障患者65例(对照组),检测两组患者血清中糖化血红蛋白(HbA1c)、空腹血糖(FPG)、空腹胰岛素(FINS)的水平,计算胰岛素抵抗指数(HOMA-IR);同时检测房水和血清中的胰岛素样生长因子-1(IGF-1)、白细胞介素-6(IL-6)含量,对HbA1c、HOMA-IR与房水和血清中IGF-1、IL-6含量进行相关性分析。结果:对照组血清中的FPG、HbA1c、HOMA-IR,以及房水和血清中IGF-1、IL-6含量显著低于观察组,差异有统计学意义(均P<0.05)。HbA1c与房水及血清中的IGF-1和IL-6均呈正相关(P<0.05)。HOMA-IR与房水及血清中的IGF-1和IL-6均呈正相关(P<0.05)。结论:糖尿病性白内障患者HbA1c、HOMA-IR与房水及血清中的IGF-1、IL-6含量具有相关性,通过对上述指标的测定可以辅助判断病情。

简介：1病理性近视1.1病理性近视继发脉络膜新生血管的流行病学研究和自然病程近视是最常见的屈光异常,高度近视在亚洲近视人群中所占比例为27%-33%,其中病理性近视（pathologicmyopia,PM）对视力造成严重影响[1]。据报道,成年人中PM的发病率为1%-3%,PM中继发脉络膜新生血管（choroidalneovascularization,CNV）的比率为4%-11%[2],其中位于中心凹的占58％，位于旁中心的占32％[3]。