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循环抗原

循环抗原的相关文献在1989年到2022年内共计394篇,主要集中在内科学、基础医学、临床医学 等领域,其中期刊论文364篇、会议论文4篇、专利文献197129篇;相关期刊113种,包括肉品卫生、寄生虫与医学昆虫学报、热带病与寄生虫学等; 相关会议4种,包括全国血吸虫病诊治技术与临床研究学术研讨会、第二届北京热带医学与寄生虫学论坛、吉林省畜牧兽医学会2003学术年会等;循环抗原的相关文献由826位作者贡献,包括陈家旭、李浩、娄文娴等。

循环抗原—发文量

期刊论文>

论文:364 占比:0.18%

会议论文>

论文:4 占比:0.00%

专利文献>

论文:197129 占比:99.81%

总计:197497篇

循环抗原—发文趋势图

循环抗原

-研究学者

  • 陈家旭
  • 李浩
  • 娄文娴
  • 陈韶红
  • 张耀娟
  • 钱宗立
  • 傅翠娥
  • 徐之杰
  • 沈一平
  • 管晓虹
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李祎; 王先梅; 杨旭; 邓均华; 王飞; 刘群; 许建海; 刘晶
    • 摘要: 弓形虫(Toxoplasmagondii)是一种人畜共患机会性致病原虫,其急性感染可导致宿主产生明显的临床症状和严重的病理损伤.弓形虫致密颗粒蛋白1(dense granuleprotein 1,GRA1)是一种良好的诊断抗原,也是弓形虫急性感染的标志物循环抗原(circulating antigen,CAg)的重要组分.本研究利用TgGRA1单克隆抗体建立双抗体夹心ELISA方法,为急性弓形虫感染的检测提供依据.将免疫GRA1-His的小鼠脾细胞与SP2/0进行融合,筛选出能稳定分泌抗体的杂交瘤细胞.选择其中一种单抗与HRP标记后的鼠源GRA1多抗配对,建立1种双抗体夹心ELISA方法,检测人工感染弓形虫的猪和小鼠血清样品,并将检测效果与巢式PCR(nest PCR,nPCR)和商品化试剂盒进行比较.结果筛选到4株杂交瘤细胞,腹水效价为106~107,亚型均为IgG1;IFA和Western blot结果显示,4株单抗均具有良好的反应性和特异性.选择1G2单抗和HRP标记多抗配对,建立了循环抗原双抗体夹心ELISA方法,最低能够检测到血清中1.563 ng·mL-1 GRA1抗原,或者100 ng·mL-1 ESA.该方法与nPCR相比具有较高的一致性,较市售商品化试剂盒更为准确可靠.本研究第1次将GRA1抗原作为急性弓形虫感染的诊断指标,建立相应的检测方法,成功地在人工感染样品中检测到弓形虫急性感染,可为弓形虫急性感染的诊断提供参考,对临床上急性弓形虫病的治疗有指导意义.
    • 何鑫; 汪世平; 周云飞; 黄成铭; 闾丘思嘉; 宁水兵
    • 摘要: 目的 利用金硫共价键成功构建固相金纳米棒免疫传感器,检测不同感染周期的日本血吸虫循环抗原,并分析宿主体内抗体的消长变化.方法 晶种生长法制备金纳米棒溶液,与表面带有巯基基团的ITO玻片以金硫共价键组装成固相金纳米棒免疫传感器.聚4苯乙烯磺酸钠(PSS)和聚丙烯胺盐酸盐(PAH)修饰固相金纳米棒免疫传感器表面,并结合日本血吸虫未成熟卵可溶性抗原26-28 kDa单链抗体(SIEA26-28kDaSjscFv),检测日本血吸虫不同感染周期兔血清循环抗原.结果 固相金纳米棒免疫传感器分别与1~8周的感染血清反应,并设立阴性血清对照组;结果显示,表面等离子共振吸收峰峰值分别呈现出17 nm,52 nm,28 nm,11 nm,13 nm,23 nm,45 nm,43 nm的位移,阴性对照组未出现位移;同时,根据传感器表面等离子共振波峰对不同感染周期血清反应后的位移变化推断抗体在宿主体内呈现出先上升,后下降,再上升的变化规律.结论 通过对固相金纳米棒免疫传感器的研究,证明其能够通过表面等离子共振波峰的移动来检测日本血吸虫感染血清循环抗原;同时,对抗原抗体在宿主内的变化提供了数据支撑.固相金纳米棒免疫传感器的高特异性、灵敏度为日本血吸虫病的诊断及抗原抗体的研究提供了新的手段.
    • 黄云剑
    • 摘要: 世界卫生组织最新数据显示,40岁以上的人,慢性肾脏病患病率约为7%~10%,不亚于糖尿病和高血压的发病率,成为威胁全世界的主要疾病之一。目前全世界已有100多万人靠透析生存,并且以每年平均8%的速度增长;此外,慢性肾脏病发病还呈现出年轻化趋势,20~30岁的透析患者越来越多,年龄最小的甚至不到10岁。是时候保护肾脏了,一起来关注我们的"爱肾天地"吧!
    • 刘玉; 王元伦; 唐雨德
    • 摘要: Objective To develop a sensitive and specific double antibody sandwich enzyme-linked immunosorbent assay (ELISA) to detect circulating antigen (CA) of Taeniasoliumcysticercosis with chicken egg yolk immunoglobulin antibodies (IgY).Methods Hens were subcutaneously immunized with CA and the crude IgY was extracted from egg yolk by water dilution method.A sandwich ELISA had been developed by purified IgY antibodies as capture antibody and monoclonal antibodies labeled with peroxidase as detecting antibody.The detection limits of CA were analyzed.The sera and cerebrospinal fluid of patients,the sera of healthy people,sick pigs and healthy pigs were detected in parallel by the established ELISA methods.It's sensitivity and specificity were evaluated by comparison with ELISA based monoclonal antibodies.Results The minimal detectable concentration of CA was 8.3 and 13.9 μg/ml by sandwich ELISA based IgY and monoclonal antibodies,respectively.The positive rates of samples from 139 patients,19 cerebrospinal fluid of patients and 222 sick pigs were 100% (139/139),89.5% (17/19) and 100% (222/222) by sandwich ELISA based IgY respectively.The negative rates of samples from 50 healthy people and 20 healthy pigs were 100%.Conclusion The novel double-antibody sandwich ELISA using anti-CA IgY appears to be sensitive and specific for detection the CA of Taenia solium cysticercosis.It is the promising assay for immunodiagnosis of Taenia solium cysticercosis.%目的 建立基于IgY的双抗体夹心ELISA用于囊尾蚴病的诊断.方法 制备并纯化抗囊尾蚴循环抗原(CA)卵黄抗体(IgY),建立以抗CA的IgY为捕获抗体,酶标记抗CA的单克隆抗体1A5为检测抗体的双抗体夹心ELISA法,共检测样品450份,并与捕获抗体和检测抗体均为单克隆抗体的ELISA法比较,验证方法的敏感性、特异性与实用性.结果 成功制备并鉴定了特异性IgY抗体,建立了基于Igy的双抗体夹心ELISA检测体系.IgY-ELISA和双单抗-ELISA检测囊尾蚴CA的灵敏度分别为8.3 μg/L和13.9 μg/L.IgY-ELISA检测囊尾蚴病患者血清与脑脊液的CA阳性率分别为100% (139/139)与89.5% (17/19),囊尾蚴病猪血清的阳性率100% (222/222),健康人与健康猪血清的阴性率为100%.结论 建立的基于lgY的双抗体夹心ELISA检测囊尾蚴CA用于囊尾蚴病诊断,具有较高的特异性和敏感性,可用于囊尾蚴病的辅助诊断.
    • 蔡玉春; 郭俭; 陈韶红; 田利光; 陈木新; 艾琳; 张玲玲; 陈家旭
    • 摘要: 目的 建立基于IgY的血吸虫循环抗原的间接红细胞凝集试验(indirect hemagglutination test,IHA)并初步探讨IgY在诊断日本血吸虫病中的应用价值.方法 以日本血吸虫卵可溶性虫抗原(soluble egg antigen,SEA)免疫海蓝蛋鸡,获得抗SEA的IgY抗体.取人O型红细胞醛化、鞣化,形成鞣化后红细胞,并分别用磷酸盐、碳酸盐和柠檬酸盐缓冲液稀释抗SEA-IgY抗体,以确定IgY致敏红细胞最佳缓冲液.将IgY溶解于最佳的缓冲液中致敏鞣化后红细胞,形成IgY红细胞检测液,用此检测液分别检测感染30、20、10条日本血吸虫尾蚴和正常小鼠血清各10份,初步检测不同感染度小鼠血清的循环抗原.结果 pH7.2磷酸盐缓冲液溶解的IgY所得致敏红细胞检测血清最佳,效价可达1∶320.用此IgY-IHA法检测中、高感染度血清(感染20条和30条日本血吸虫尾蚴)阳性率为100%,低感染度血清(感染10条日本血吸虫尾蚴)阳性率为70%,对照组10只小鼠血清全为阴性,特异性为100%.结论 建立了IgY-IHA法,此法检测日本血吸虫病循环抗原具有较高的敏感性.%Objective To establish anti-SEA-IgY based indirect hemagglutination test (IHA) method of detecting circulating antigen of Schistosoma japonicum and explore its application value for diagnosis of schistosomiasis.Methods Hens were immunized with soluble egg antigen (SEA) of S.japonicum,specific anti-SEA IgY was purified from eggs after immunization.The anti-SEA IgY was diluted with three different buffer as phosphate (PBS,pH7.2),carbonate ( pH 9.6) and citrate buffer to choose the best buffer.After aldehyding and tanning,the human O type erythrocytes were sensitized with the anti-SEA IgY which was dissolved into the best buffer,formatting the IgY adsorbed erythrocytes test solution.With this test solution,30 sera of mice infected with 10,20 or 30 S.japonicum cercariae respectively and 10 sera of normal control mice were tested for detecting circulating antigens in the sera of mice infected with S.japonicum. Results Erythrocytes which were sensitized with the anti-SEA IgY dissolving into phosphate buffer (pH7.2) gave the best results,the best titer was up to 1:320.With this IgY-IHA method,the positive rate of sera of high degree infection( mice infected with 20 and 30 cercariae) were 100%,while the positive rate of sera of low degree infection(mice infected with 10 cercariae) were 70%,10 sera of control group mice were all negative.Conclusion The established IgY-IHA method exhibited higher specificity andsensitivity in detecting circulating antigen of S.japonicum.
    • 李浩; 陈韶红; 张永年; 郭俭; 常正山; 陈家旭
    • 摘要: In this study,adults of Armillifer agkistrodontis (A.agkistrodontis) were collected from Agkistrodon acutus,and then the eggs were separated to feed mice.In the next step,when the infection model was established,blood serum of infected mice were collected after 1,2 and 3 weeks,respectively.Furthermore,ELISA and dot- ELISA were used to detect the dynamic change of specific antibodies and circulating antigens respectively.The specific antibodies increased from 8th week,reached the top at 12th week,decreased from 16th week,and then maintain at the same level constantly.Meanwhile,the specific antibodies were typed.It is evident that IgM antibody appeared first.However,it was substitute by IgG1 after 16 weeks.Moreover,the circulating antigens have been detected in the 1st week by dot-ELISA.Then,the dilution between 1:8 to 1:128were founded in 3rd week.The highest dilution with 1:256 appeared at 8th week,maintained before 11th week and then decreased gradually,which might provide a significant clinical implication for early diagnosis of circulating antigens.%目的 观察感染尖吻蝮蛇舌形虫小鼠体内特异性抗体和循环抗原动态变化.方法 从感染尖吻蝮蛇舌形虫的五步蛇体内收集成虫,分离尖吻蝮蛇舌形虫的虫卵感染小鼠,从感染后1 w、2 w、3~22 w收集小鼠血清,分别用ELISA法和dot-ELISA法观察不同时间小鼠体内尖吻蝮蛇舌形虫特异性抗体和循环抗原的动态变化.结果 感染尖吻蝮蛇舌形虫的小鼠,其体内特异性抗体从第8 w开始上升,12w达到高峰,第16w开始下降并一直维持同一水平.同时,对小鼠产生的特异性抗体进行分型,其最早出现为IgM,16w以后被IgG1所替代.感染尖吻蝮蛇舌形虫的小鼠血清用dot-ELISA法检测其循环抗原出现的时间为第1 w,到第3 w时循环抗原检出稀释度在1:8~1:128之间,到第8 w,最高稀释度可达到1:256,并一直维持,第11w以后逐渐下降.结论 1.小鼠感染尖吻蝮蛇舌形虫虫卵后特异性抗体(Ab)在感染第8 w开始上升,抗体最高滴度维持时间为第12~15 w.2.感染尖吻蝮蛇舌形虫虫卵的小鼠其血清中产生的特异性抗体最早出现为IgM,以后被IgG1所替代.3.小鼠在感染尖吻蝮蛇舌形虫虫卵后的1 w就可在其血清中检测到循环抗原(CAg),预测这段时间检测循环抗原具有早期诊断参考价值.
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