简介:目的:探讨外伤性巩膜层间囊肿的切除及其联合手术方法。方法:回顾性总结17例确诊为外伤性巩膜层间囊肿的诊治情况。17例均有角巩膜裂伤及手术史。其中14例伴有继发性青光眼。手术采用切除巩膜层间囊肿联合异体巩膜移植术,对伴有难治性青光眼者同时行抗青光眼手术治疗。结果:17例中14例囊肿1次治愈,1例术后有脉络膜脱离合并出血,最终眼球萎缩,1例术后1a囊肿复发,1例术后1mo眼压失控,植片隆起,再次手术,随诊期间未见复发。随诊时间:2~30(平均12.3)mo。结论:彻底切除囊肿联合异体巩膜移植术对巩膜层间囊肿的疗效显著,复发率低。对于继发性青光眼者,因其眼前段损伤及粘连严重,多为难治性青光眼,以睫状体光凝或冷冻治疗为宜。
简介:AIM:ToInvestigatetheeffectsoftransforminggrowthfactorβ2(TGF-β2)andconnectivetissuegrowthfactor(CTGF)ontransdifferentiationofhumanlensepithelialcells(HLECs)culturedinvitroandsynthesisofextracellularmatrix(ECM).METHODS:HLECsweretreatedwithTGF-β2(0,0.5,1.0,5,10μg/L)andCTGF(0,15,30,60,100μg/L)fordifferenttimes(0,24,48,72h)invitroandtheexpressionofα-smoothmuscleactin(α-SMA),themaincomponentoftheextracellularmatrixtypeⅠcollagen(Col-1)andfibronectin(Fn)weremeasuredbyusingreal-timepolymerasechainreaction(PCR)andwestern-blot.RESULTS:TGF-β2andCTGFsignificantlyincreasedexpressionofα-SMAmRNAandprotein(P<0.05,P<0.001),FnmRNAandprotein(P<0.001),Col-1mRNAandprotein(P<0.001).TGF-β2couldinduceHLECsexpressionofCTGFmRNAandproteinindosedependentmanner(P<0.05,P<0.001).TGF-β2andCTGFcouldinduceHLECstoexpressα-SMA,FnandCol-1intime-dependentmanner.EachtimeofTGF-β2andCTGFinducedHELCsexpressionofα-SMA,Fn,Col-1mRNAandproteinwassignificantincreasecomparedwithcontrol(P<0.05,P<0.001).CONCLUSION:TGF-β2andCTGFcouldinduceHLECsepithelialmesenchymaltransitionandECMsynthesis.
简介:生物力学是研究组织或器官的力量与功能之间关系的学科,对研究眼科疾病的预防、发生、发展、诊疗具有重要作用。眼球是一个封闭的近似球体的器官,眼球内外的每一组织都有一定张力,而且相互联系,互为影响。眼内外及球壁某一局部组织的改变,可能会影响眼球某一区域组织的生物力学或功能的改变。随着生物力学的方法增多,大家越来越重视对眼部组织生物力学的研究,达到预防和治疗眼部疾病的目的。如使用胶原交联增强角膜的强度,防治圆锥角膜或扩张性角膜疾病;又如后巩膜加固术增强巩膜力学的方法来治疗或预防高度近视等。对眼外肌、角膜、巩膜、虹膜、晶状体的生物力学的研究是目前热点,本文就目前眼部生物力学的研究热点做一综述。
简介:AIM:Todeterminethehistopathologicalchangesofrifampicinappliedintravitreallyonretinalganglioncellsbymeansofstereologicalandhistopathologicalmethods.METHODS:Forthisstudytwenty-fourNewZealandadultrabbitsweredividedintofourgroups(n=6foreachgroup).50μg/0.1mL(group1),100μg/0.1mL(group2),150μg/0.1mL(group3)and200μg/0.1mL(group4),rifampicinwereinjectedintothevitreousoftherighteyesofanimals,theirlefteyeswereusedascontrol(group5).Afterthe28thdayofapplication,animalswereanesthetisedwithxylazine(8mg/kg,IM)andthentheireyeswereenucleatedimmediately.Patternsweretakenawayandeyeswerepreparedforbothstereologicalandelectromicroscopicobservation.RESULTS:Dependingonthehighdoseofrifampicin,somehistopathologicalchangessuchascytoplasmicdilatationanddamagedmembranewereobservedontheelectromicroscopiclevel.Usingquantitativeexamination,whichwasdoneatthelightmicroscopiclevel,itwasshownthatthenumberofneuronsdecreasedlinearlyasrifampicindoseincreasedwhencomparedwiththecontrolgroup.CONCLUSION:Basedonthesefindings,low-doserifampicin(50μg/0.1mL)maybeusefulfortreatmentoftheoculardiseases.