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。
简介:目的探讨自拟补肾通络明目汤对青光眼术后视神经功能的影响。方法将2015年8月至2018年1月我院接诊的122例患者纳入本研究。利用随机号码表抽取样本,均分为观察组和对照组各61例。对照组:1%卡替洛尔滴眼液控制眼压。观察组:1%卡替洛尔滴眼液控制眼压配合自拟补肾通络明目汤治疗。观察视力、眼压、视野、RNFL变化情况。结果观察组和对照组治疗前后视力和眼压对比,P〉0.05;观察组治疗后MD、PSD、MS均低于治疗前和对照组(P〈0.05);观察组治疗后RNFL颞侧、上方、下方均高于对照组治疗后(P〈0.05)。结论自拟补肾通络明目汤对青光眼术后视神经功能有积极影响,对患者视力和眼压无明显影响,能够降低MD、PSD、MS水平,提高RNFL颞侧、上方、下方水平。
简介:AIM:Toinvestigatetheantifibroticeffectofthefreeze-driedbilayeredfibrin-bindingamnioticmembraneasadrugdeliverysystemonglaucomasurgeryinrabbitmodel.Theaimofthisstudywastoprepareanovellocaldeliverysystemforthesustainedandcontrollablereleaseof5-Fu.METHODS:Twenty-fourJapanesewhiterabbitswererandomizedintothreegroups:theexperimentalgroup(oculartrabeculectomyincombinationwith5-Fuloadedfreeze-driedbilayeredfibrin-bindingamnioticmembranetransplantation),thecontrolgroup(oculartrabeculectomyincombinationwith5-Fu)andtheblankgroup(singletrabeculectomy).HEstaining,massionstainingandimmunohistochemistryforα-SMAwereperformedondays7,14,21and30followingsurgery.Theconcentrationof5-Fuinrabbitaqueoushumorwasexaminedbyhighperformanceliquidchromatography(HPLC)3daysafterthesurgery.RESULTS:Statisticaldifferenceswerenotedinintraocularpressureamonggroupsonday7,14,21and30followingsurgery.Histologyfurtherdemonstratedthattrabeculectomyincombinationwithfreeze-driedbilayeredfibrin-bindingamnioticmembraneyieldedwellwoundhealingandnoscarformationandwasbeneficialforlongtermeffect.CONCLUSION:HPLCshowedagoodslow-releaseeffectwithfreeze-driedbilayeredfibrin-bindingamnioticmembrane.