简介:AIM:Toanalyzetheapplicationofmicrobubblecontrasttechnologyinthetreatmentofophthalmicdiseases,mainlyanalyzingitsadvantagesandexistingproblems.METHODS:Atotalof30representativeliteraturesabouttheapplicationofultrasoundcontrastagentingenetargetedtherapyathomeandabroadwerecollected,andfocusingonsortingouttheliteraturereportingthetreatmentofophthalmicdiseaseswithmicrobubblecontrasttechnologyinrecentyears,thenrecallingitsadvantagesandproblems,finallymakingreasonableassessmentonexistingproblemsandproposingpossiblesolutionstotheproblems.RESULTS:Duetoitsuniquesafetyandefficacy,thetreatmentofophthalmicdiseaseswithmicrobubblecontrasttechnologyhasincreasinglydrawntheattentionofclinicians,buttworelevantissuesshouldbeconsidered:first,thenatureofcontrastagentandthechoiceofcorrespondingultrasoundparameters;second,relativeincidenceoftissuebleeding,intravascularhemolysis,moderateorsevereallergyaswellasothersideeffects.CONCLUSION:Microbubblemaybecomethecarrieroftargetedtherapy,andasakindofnewnon-invasivedeliverysystem,theultrasoundcontrastagenthasbroadapplicationprospects,butitsapplicationinophthalmicresearchisstillinitsinitialstageandthesafetyofcontrast-enhancedultrasoundstillneedsfurtherstudy.
简介:目的:利用DNA探针杂交技术,结合显色探针技术建立一种新型、高灵敏的免疫检测体系,用于早期先天性白内障的筛查。方法:选取3个常染色体显性遗传的先天性白内障家系中患者14例,取静脉血并提取mRNA,建立CRYAB的捕获探针及显色探针。利用DNA探针,通过碱基配对原则形成三明治结构(捕获探针-DNA探针-显色探针)检测入选者的血样。1家系6例患者静脉血利用酶联免疫吸附测定(ELISA)法检测琢B-晶状体蛋白。结果:最佳条件下,双特异探针技术可检测到最低浓度的先天性白内障晶状体蛋白的突变基因,各突变位点检测率为99.5%~99.7%;ELISA法检测样本琢B-晶状体蛋白上调,阳性率为85.9%。双特异探针技术敏感性更高,检测位点更多,ELISA法仅局限于蛋白检测水平,精确性不高。结论:双特异探针检测技术操作简单,灵敏度高,可重复性高,经济实惠,在临床上用于产前诊断、优生优育具有重要的应用价值。
简介:目的对临床可疑青光眼患者进行长期的偏振激光扫描仪联合个体化角膜补偿技术(scanninglaserpolarimetrywithvariablecornealcompensation,GDxVCC)随访,分析GDxVCC对该类患者的诊断价值。方法选取门诊可疑青光眼的眼底检查视乳头杯/盘比(C/D)≥0.4,或双眼不对称且C/D差值〉10.2,静态视野检查结果正常患者68例,随访前后均用GDxVCC检查(采用相同的角膜补偿值)。如双跟C/D值相同,随机选取1眼,如C/D值不同,则选取C/D值大的1眼,对结果进行t检验统计学分析。结果随访时间6~30个月,平均(12.5±7.0)个月,眼底C/D值为0.57±0.17。随访前后GDxVCC检查:椭圆平均值分别为50.33±7.72和49.66±8.12,上方平均值为58.72±13.56和58.18±12.01,下方平均值为60.71±11.31和59.13±11.95,神经纤维指数为30.85±19.62和33.03±21.22,差异无统计学意义,但从绝对数值上,椭圆平均值、上方平均值和下方平均值变小,神经纤维指数变大。其中7例(10.3%)诊断为青光眼,21例(30.9%)排除青光眼,40例(58.8%)仍需进一步随访。结论对临床怀疑青光眼的患者应长期进行随访,GDxVCC随访对青光眼的诊断有一定的价值。(中国眼耳鼻喉科杂志,2009,9:92—94)