简介:目的:探讨获得性免疫缺陷综合征(acquredimmunodeficiencysyndrome,AIDS,简称艾滋病)发生视乳头病变的类型及其与CD4^+T淋巴细胞的关系。方法:回顾分析107例(214眼)艾滋病患者经眼底彩照及眼底荧光血管造影(fluoresceinangiography,FFA)检查确诊的视乳头病变患者,统计AIDS性视乳头病变的发生率及病变类型以及与CD^+T淋巴细胞数之间的关系。结果:107例(214跟)AIDS患者发生视乳头病变71眼,占33.2%;其中,前段缺血性视神经病变30眼,占42.2%(30/71);视盘水肿12眼,占16.9%(12/71);无体征性视神经病变29眼,占40.8%(29/71)。CD4^+T淋巴细胞≤50个/μ发生视乳头病变59眼,未发生视乳头病变75眼,发病率44.0%(59/134);CD^4+T淋巴细胞≥51个/μL发生视乳头病变12眼,未发生视乳头病变68眼,发病率15.0%(12/80)。经双侧检测统计:χ^2=19.042,P=0.000。说明组间具有显著差异性。结论:AIDS视乳头病变的类型呈多样性,且CD^4+T淋巴细胞数越少,发生视乳头病变的几率越大。
简介:目的分析老年人视力损害的眼病病因及心理影响。方法收集眼科门诊60岁以上老人850例,分三组:60-69岁,70-79岁,≥80岁。检查视力、眼科仪器检查、评估心理状况,对数据进行统计分析。结果各视力级别的总比例:≥5.0(5.46%),较好视力4.5-4.9(60.62%),低视力4.0-4.4(24.34%),盲〈4.0(9.58%)。在年龄组间随年龄增高,较好视力的比例下降(66.45%,57.11%,38.23%),低视力(25.33%,35.54%,47.27%)和盲(5.12%,7.24%,14.50%)的比率升高,差异有统计学意义(P〈0.05)。随视力级别下降,心理状况水平优的人数比例而降低(90.13%,82.31%,34.24%,2.10%),状况水平差的比例而升高(1.73%,5.46%,45.35%,85.44%),差异有统计学意义(P〈0.05)。低视力和盲的主要眼病构成比:白内障52.33%,屈光不正20.11%,老年性黄斑变性14.32%,糖尿病视网膜病变7.02%,眼底静脉阻塞3.10%。结论老年人视力损害眼病前五位是白内障,屈光不正,老年性黄斑变性,糖尿病视网膜病变,眼底静脉阻塞。老年人低视力和盲的比例高,视力损害者不良心理状况比例高,视力损害对老年人心理状况的影响值得重视。
简介:目的探索肺炎衣原体(chlamydiapneumoniae,Cpn)与鼻息肉之间的关系。方法用直接免疫荧光法检测外周血单核细胞(peripheralbloodmononclearcell,PBMC)中的Cpn特异性抗原(Cpn-Ag),间接微量免疫荧光法检测血浆中Cpn抗体。结果在73例鼻息肉患者和87例正常人血浆中,CpnIgG的阳性检出率分别为65.8%(48/73)和32.2%(28/87),P〈0.001;CpnIgM的阳性检出率分别为30.1%(22/73)和12.6%(11/87),P〈0.01;PBMC中的Cpn-Ag阳性检出率分别为86.3%(63/73)和31.0%(27/87),P〈0.001。结论鼻息肉与肺炎衣原体有一定的相关性。检测PBMC中Cpn—Ag可为更好的治疗鼻息肉提供实验依据。(中国眼耳鼻喉科杂志,2006,6:233-234)
简介:目的探索肺炎衣原体(Chlamydiapneumoniae,Cpn)与急性咽喉感染之间的关系.方法用直接免疫荧光(directimmunofluorescence,DIF)法检测外周血单核细胞中的Cpn特异性抗原,间接微量免疫荧光(microimmunofluorescence,MIF)法检测血浆中Cpn抗体.结果在94例急性咽喉感染患者和87例正常人血浆中,CpnIgG的阳性检出率分别为54.3%(51/94)和32.2%(28/87),P<0.05;CpnIgM的阳性检出率分别为59.6%(56/94)和12.6%(11/87),P<0.05;外周血单核细胞中的Cpn特异性抗原阳性检出率分别为62.78%(59/94)和31.0%(27/87),P<0.05.结论急性咽喉感染与肺炎衣原体有密切关系.检测外周血单核细胞中Cpn特异性抗原可为诊治急性咽喉感染提供实验依据.
简介:AIM:Todeterminethenormativevaluesofwhite-towhitecornealdiameterwithOrbscanIITopographySystemandtocomparerightandlefteyesdatainthenormalyoungpopulation.METHODS:Atotalof1001healthyparticipantsaged18-45yparticipatedinthisobservationalcross-sectionalstudy.Thestudypopulationconsistedof616femaleand385malesubjects.ThecornealdiameterwasmeasuredwiththeOrbscanII.Thedifferencesbetweengenders,betweenrightandlefteyesandage-relatedchangeswereevaluated.StatisticalanalyseswereperformedusingStudent’st-test.RESULTS:Theaveragewhite-to-whitedistanceinourstudypopulationwasrecordedas11.65±0.36mm(median:11.60mm,mode:11.70mm,minimum:10.50mmandmaximum:13.60mm).Thewhite-to-whitedistancewas11.60±0.35mminmalesand11.71±0.36mminfemaleswhichwasstatisticallydifferentbetweengenders(P<0.01).However,white-to-whitedistancewasnotstatisticallydifferentbetweenrightandlefteyes.Inaddition,thisparameterdecreasedwithincreasingage.Considering95%confidenceinterval,cornealdiameterlessthan10.93mmandgreaterthan12.34mmwouldbeconsideredasmicrocorneaandmegalocornea,respectivelybasedonthisstudypopulation,usingtheOrbscanIItopography.CONCLUSION:DetaileddescriptionandanalysisofcornealdiameterwithOrbscandemonstratethattheobtainedaveragevalueofhorizontalwhite-to-whiteishigherinmalethanfemaleanddecreasesslightlywithincreasingage.Ourdataalsosuggeststhecutoffvaluesfordefinitionofmicrocorneaandmegalocornea,whichcanbeemployedwiththispopulation.
简介:AIM:Toestimatetheprevalenceandriskfactorsforvitreousfloatersinthegeneralpopulation.·METHODS:Anelectronicsurveywasadministeredthroughasmartphoneappaskingvariousdemographicandhealthquestions,includingwhetherusersexperiencefloatersintheirfieldofvision.Multivariatelogisticregressionanalysiswasusedtodetermineriskfactors.·RESULTS:Atotalof603individualscompletedthesurvey,with76%reportingthattheyseefloaters,and33%reportingthatfloaterscausednoticeableimpairmentinvision.Myopeswere3.5timesmorelikely(P=0.0004),andhyperopes4.4timesmorelikely(P=0.0069)toreportmoderatetoseverefloaterscomparedtothosewithnormalvision.Floaterprevalencewasnotsignificantlyaffectedbyrespondentage,race,gender,andeyecolor.·CONCLUSION:Vitreousfloaterswerefoundtobeaverycommonphenomenoninthisnon-clinicalgeneralpopulationsample,andmorelikelytobeimpairinginmyopesandhyperopes.
简介:目的构建肺炎链球菌自溶素(pneumococcalautolysin,LytA)核酸疫苗,并研究其免疫原性。方法采用聚合酶链反应方法从肺炎链球菌基因组中克隆肺炎链球菌自溶素基因,然后将该基因插入到pVAX1真核表达载体中,构建表达LytA的重组质粒,制备成超螺旋比例大于90%的核酸疫苗。实验组:BALB/c小鼠5只,对其分3次肌内注射核酸疫苗(100μg);对照组:BALB/c小鼠5只,肌内注射pVAX1空载体(100μg)3次。分别采集小鼠血清,采用间接酶联免疫吸附方法测定血清LytA特异性抗体水平。结果扩增出的LytA基因(957bp)与基因库中LytA的编码序列(957bp)一致。成功构建了LytA核酸疫苗。实验组小鼠的血清LytA抗体水平明显高于对照组,差异有统计学意义(P〈0.01)。结论成功克隆了LytA基因,制备了LytA核酸疫苗,后者可在小鼠体内诱导较强的特异性体液免疫反应。