简介:目的探讨纤维蛋白封闭剂(fibrinsealing,FS)在功能性鼻内镜鼻窦手术中的临床应用价值。方法随机将163例行鼻内镜鼻窦手术患者分成FS组、Merocel高膨胀材料组和凡士林油纱条组,比较不同填塞材料的术后临床表现及远期影响。结果FS组在鼻内镜鼻窦手术中止血效果差于高膨胀材料及凡士林油纱条组,但术后头痛及鼻腔疼痛较轻,鼻黏膜反应轻,创口愈合快,鼻黏膜上皮化快,鼻腔粘连少。结论鼻内镜鼻窦手术中应用FS术后头痛及鼻黏膜反应轻,值得临床进一步实践、应用。
简介:目的探讨用改良圈匙娩核并注重粘弹剂应用对防止小切口非超声乳化白内障囊外摘出人工晶体植入术并发症的作用。方法用改良圈匙娩核并注重粘弹剂应用对355例白内障行小切口非超声乳化白内障人工晶体植入术。结果术后三天矫正视力≥0.5者291眼达82%,脱残339眼(95.5%)脱盲315眼(98.9%)。术后角膜水肿39眼,占10.98%均在3~6天后恢复透明。后囊破裂7眼,占1.97%,前房出血4眼,占1.13%。瞳孔轻度变形10眼,占2.8%,暂时性高眼压4眼,占1.13%。结论在行小切口白内障囊外摘出人工晶体植入时,应用改良后的圈匙娩核并注重粘弹剂应用,就会明显减少并发症,达到良好的效果。
简介:目的通过在视网膜组织三维立体培养系统中加入不同浓度的川芎嗪溶液,观察川芎嗪对视网膜神经节细胞轴突再生的作用。方法建立体外培养的大鼠视网膜组织三维立体培养系统,将1~3d新生远交群SD(SpragueDawley)大鼠视网膜切成0.5mm×0.5mm大小的视网膜组织,加入不同浓度(0.125、0.25、0.5、1.0g/L)川芎嗪溶液后,在相差显微镜下动态观察视网膜神经节细胞轴突的生长情况,于加药后第3、6和9天记录再生轴突的数目及长度。结果与对照组相比,各浓度川芎嗪对视网膜神经节细胞轴突生长均有促进作用,以0.5g/L浓度效果最明显,差异有统计学意义(P〈0.05)。免疫组织化学染色显示视网膜神经节细胞的轴突具有明显再生现象。结论一定剂量范围的川芎嗪可促进视网膜神经节细胞轴突再生和伸长。(中国跟耳鼻喉科杂志,2009,9:86—88)
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.·