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1.
为了制备诺氟沙星(NFLX)抗体,将修饰成功的NFLX-NH2分别与牛血清白蛋白(BSA)和卵清蛋白(OVA)偶联,制备完全抗原,用免疫抗原免疫小鼠,获得了高效价的诺氟沙星多克隆抗体. 相似文献
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目的:将排泄-分泌抗原用于Dot-ELISA免疫学诊断试验,检测其抗原特异性和敏感性。方法经培养24h、48h、72 h排泄-分泌抗原ES1、ES2、ES3,对38头份猪旋毛虫病阳性猪血清、98头猪旋毛虫阴性血清、26头猪囊虫阳性血清、35头猪蛔虫阳性血清和21头猪细颈囊尾蚴阳性血清进行了Dt-ELISA免疫学方法检测并于粗抗原进行比较。结果排泄-分泌抗原的特异性为ES1(99.44%)、ES2(96.11%)、ES3(92.77%),敏感性ES1(97.36%)、ES2(92.11%)、ES3(84.21%)。结论排泄-分泌抗原ES1(培养24小时)抗原特异性强,敏感性高,重复性好,用于旋毛虫病的免疫诊断有重要作用。 相似文献
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【目的】制备培氟沙星(Pefloxacin,PEF)完全抗原,并对其免疫学特性进行鉴定。【方法】以培氟沙星与牛血清白蛋白(BSA)为材料,用碳二亚胺(EDC)法制备培氟沙星-牛血清白蛋白完全抗原(PEF-BSA),变性聚丙烯酰胺凝胶电泳(SDS-PAGE)及紫外扫描(UV)检测其免疫学特性;利用PEF-BSA免疫BALB/c小鼠,无菌条件下收集血清,用间接ELISA测定多抗血清(pAb)效价。并用同样的方法制备和鉴定培氟沙星-鸡卵清白蛋白完全抗原(PEF-OVA)。【结果】培氟沙星与牛血清白蛋白及鸡卵清白蛋白偶联成功,PEF-BSA偶联比为8∶1,PEF-OVA偶联比为6∶1。间接ELISA测得多抗血清效价均达到4 000以上,得到了较好的免疫效果。【结论】成功得到了培氟沙星完全抗原,该抗原具有较强的特异性及良好的敏感性。 相似文献
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兔抗甲胺磷多克隆抗体的制备 总被引：10，自引：1，他引：10
采用水溶性碳化二亚胺法(EDC),将MTP与牛血清蛋白(BSA)、人血清蛋白(HSA)和鸡卵清蛋白(OVA)共价偶联,分别合成免疫抗原MTP?BSA、MTP?HSA和包被抗原甲胺磷?鸡卵清蛋白(MTP?OVA),用合成的免疫抗原对新西兰大白兔进行免疫,制得抗血清经鉴定确证为兔抗MTP多克隆抗体(polyclonalantibody,PAB),效价分别为1∶15?000和1∶12?000. 相似文献
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为了制备培氟沙星(PFLX)抗体,采用N-羟基琥珀酰亚胺活性酯(NHS)法将培氟沙星分别与牛血清白蛋白(BSA)、卵清白蛋白(OVA)偶联,制备免疫抗原PFLX-BSA和检测抗原PFLX-OVA,用PFLX-BSA免疫小鼠以获得高效价的抗体。结果显示,免疫抗原PFLX-BSA紫外光谱具有药物和蛋白的叠加特性,其最大吸收峰在277.5nm处,说明载体蛋白BSA与PFLX成功偶联,可用于动物免疫。检测抗原PFLX-OVA最大吸收峰在275nm处,说明载体蛋白OVA与PFLX成功偶联,可用作检测抗原进行包被。间接ELISA检测结果表明,所得小鼠抗血清效价较高,均达1∶32 000以上,说明有特异性抗体产生。该研究成功制备了抗培氟沙星抗体,也进一步证明药物偶联成功。 相似文献
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[目的]制备二氟沙星(DIF)抗体。[方法]采用N-羟基琥珀酰亚胺活性酯(NHS)法,将二氟沙星分别与牛血清白蛋白(BSA)、卵清白蛋白(OVA)偶联,制备免疫抗原DIF-BSA和检测抗原DIF-OVA,并用DIF-BSA免疫小鼠以获得高效价的抗体。[结果]免疫抗原DIF-BSA的紫外光谱具有药物和蛋白的叠加特性,其最大吸收峰在波长277 nm处,说明载体蛋白BSA与DIF成功偶联,可用于动物免疫。检测抗原DIF-OVA的最大吸收峰在波长276 nm处,说明载体蛋白OVA与DIF成功偶联,可用作检测抗原进行包被。间接ELISA检测结果表明所得小鼠抗血清效价较高,均达1∶32 000以上,说明有特异性抗体产生。[结论]成功制备了抗二氟沙星抗体,也进一步证明了药物偶联成功。 相似文献
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为了制备环丙沙星(CPLX)多克隆抗体,将修饰成功的CPLX-NH2分别与牛血清白蛋白(BSA)和卵清蛋白(OVA)偶联,制备完全抗原—CPLX-NH2-BSA和CPLX-NH2-OVA,用CPLX-NH2-BSA免疫小鼠,获得了高效价的环丙沙星多克隆抗体. 相似文献
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【目的】探索高效苦马豆素(SW)人工抗原SW-BSA的合成方法。【方法】设计新的技术路线,合成SW人工抗原制备的关键中间产物SW-对甲基苯甲酸,并进行波谱分析。应用EDC法将SW-对甲基苯甲酸分别与牛血清白蛋白(BSA)和卵清蛋白(OVA)连接,制备免疫抗原SW-BSA和包被抗原SW-OVA,通过小鼠免疫试验检测所合成的SW-BSA的免疫原性。【结果】合成的SW-对甲基苯甲酸的结构与预期目标产物一致;合成的SW-BSA可刺激小鼠产生针对SW的抗体;通过薄层层析技术可对反应进程进行即时检测。【结论】SW-BSA人工抗原合成成功,该人工抗原具有良好的免疫原性。 相似文献
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The six antigens of Cysticercus cellulosae: CFag, CSag, CBWag, CWag, UCWag and TSag were prepared respectively. The amino acids of the antigens were determined quantitative by automatic amino acid analyzer. The relationship of original reaction was confirmed between amino acids and antigens. The results showed that there were 17 amino acids among all of the antigens. There were no significant difference (P >0.05) of Asp, Glu, Lys, His in composition of all antigens by data analysis software SPSS. There are also no significant difference ( P ＞ 0.05) in the composition of all amino acids between CSag and CBWag. The composition of Thr, Ser, Tyr, Ved, Pro in UCWag shows significant difference (P ＜ 0.05) with other antigens.The sensitivity and peculiarity of UCWag are higher than that of the others. Pro and Glu show significant linear correspondence with sensitivity and peculiarity of antigens respectively. 相似文献
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本文用猪囊尾蚴的全囊虫、囊液、头节的粗提抗原(CW_1,CF_1,CS_1),和其超速离心上清液抗原(CW_2,CF_2,CS_2)以及其经葡聚糖凝胶柱(Sephadex G—150)层析提纯的抗原(CW_3,CF_3,CS_3)分别对人工感染的猪囊尾蚴、细颈囊尾蚴猪和不感染的对照组猪,以间接血球凝集试验(IHA)进行定期的检测。结果表明,CW_2,CW_3,CF_2和 CS_2抗原的敏感性较高。进而用此4种抗原对自然感染的猪囊尾蚴猪进行了扩大诊断试验。试验结果:CF_2的敏感性高于其它抗原,但特异性较差,其检出率为76.87%,假阳性率为16.07%;而 CW_3抗原的敏感性虽较 CF_2抗原差,但特并性较强,检出率为64.88%,假阳性率为2.5%。两种抗原的重复性均良好。 相似文献
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徐春厚 《黑龙江八一农垦大学学报》1991,(2)
本文应用间接ELISA法、直接ELISA、对流免疫电泳(CIEP)法和琼脂扩散(ID)法检查了腹泻死亡兔的肠内容物样品32份,从中检测出兔轮状病毒抗原,其检出率分别为50%、43.75%、28.13%。和15.63%。各法的检出率和符合率有明显差异。比较试验表明,检测兔轮状病毒抗原的四种方法各有优缺点。其中,以间接ELISA法较为敏感,以CIEP法较为快速和适用。 相似文献
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采用N-羟基琥珀酰亚胺活性酯法,将恩诺沙星（ENR）分别与牛血清白蛋白（BSA）和卵清蛋白（OVA）连接,制备人工免疫原ENR-BSA和包被原ENR-OVA,经紫外扫描分析和动物免疫试验证实人工抗原合成成功,研究结果对抗恩诺沙星单克隆抗体的制备具有重要意义. 相似文献
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硫代磷酸酯类农药通用抗原的合成与鉴定 总被引：1，自引：0，他引：1
【目的】合成具有硫代磷酸酯类农药共性结构的系列半抗原,制备此类农药的通用人工抗原。【方法】以烷氧基硫代磷酸盐和卤代羧酸为原料合成半抗原,采用1HNMR、13CNMR及EIS-MS谱图对其结构进行表征。将合成的半抗原分别通过活性酯法、混合酸酐法与牛血清白蛋白（BSA）、卵清蛋白（OVA）偶联,制备免疫人工抗原和包被人工抗原。用紫外扫描法定性分析人工抗原的偶联情况,用2,4,6-三硝基苯磺酸（TNBS）法间接测定其偶联比。【结果】合成了H1～H6 6种具有硫代磷酸酯类农药共性结构的半抗原,其中H1、H2为包被半抗原,H3～H6为免疫半抗原。制备了H1-OVA、H2-OVA、H3-BSA、H4-BSA、H5-BSA、H6-BSA、H2-BSA、H4-OVA和H6-OVA 9种人工抗原,其偶联比分别为9∶1、10∶1、23∶1、26∶1、39∶1、43∶1、28∶1、14∶1和12∶1。【结论】成功合成硫代磷酸酯类农药的人工抗原,为下一步用其免疫动物制备抗体进而进行有机磷农药酶联免疫分析奠定了基础。 相似文献
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用聚丙烯酰胺凝胶圆盘电泳法对猪囊尾蚴的全囊虫、囊液、头节的粗提原(CW_1,CF_1,CS_1),超速离心上清抗原(CW_2,CF_2,CS_2),及葡聚糖凝胶柱(Sephadex G—150)层析提纯抗原(CW_3,CF_3,CS_3)进行了分析。结果表明,CW_1,CF_1和CS_1抗原分别显示12,5和9条氨基酸染色区带;CW_2,CF_2和CS_2抗原分别显示10,3和5条区带;而CW_3和CF_3抗原分别显示2和3条区带。由此可见,提纯后的抗原组分较纯。通过脂蛋白染色预电泳法和阿尔新兰染色法证明,囊液抗原含有丰富的蛋白质,同时含有糖蛋白和脂蛋白成分,而头节抗原则未出现糖蛋白和脂蛋白染色区带。 相似文献
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Spleen cells were obtained from chickens stimulated simultaneously with different erythrocytic antigens, and the proportions producing one and two antibodies were determined by the hemolytic-plaque technique. Most cells from birds immunized with two antigens of the same system (B) appeared to produce only one antibody. In a population of cells from birds immunized with antigens of different systems (A and B), a relatively high proportion of cells produced two antibodies. 相似文献
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Identity of HeLa cell determinants acquired by vesicular stomatitis virus with a tumor antigen 总被引：2，自引：0，他引：2
Growth of vesicular stomatitis virus (VSV) in HeLa cells results in progeny containing non-VSV antigens with a molecular weight around 75,000. The non-VSV antigens were detected by antiserums to HeLa cell determinants. These antiserums precipitate whole virions but do not neutralize them. Because one of the antiserums is directed to a tumor-specific surface antigen of HeLa cells, it appears that VSV specifically acquires such antigens during its passage through human tumor cells. 相似文献
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Activation of polyphosphoinositide hydrolysis in T cells by H-2 alloantigen but not MLS determinants 总被引：9，自引：0，他引：9
Murine minor lymphocyte-stimulating (Mls) determinants are cell surface antigens that stimulate strong primary T cell responses; the responding T cells display restricted T cell receptor (TCR) V beta gene usage. Interaction of T cells with mitogens or major histocompatibility complex (MHC) antigens activated the polyphosphoinositide (PI) signaling pathway, but this pathway was not triggered by Mls recognition. However, interleukin-2 (IL-2) secretion and proliferation to all three stimuli were comparable. Thus, although recognition of both allo-H-2 and Mls determinants is thought to be mediated by the TCR, these antigens appear to elicit biochemically distinct signal transduction pathways. 相似文献
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Virus envelope protein of HTLV-III represents major target antigen for antibodies in AIDS patients 总被引：41，自引：0，他引：41
F Barin M F McLane J S Allan T H Lee J E Groopman M Essex 《Science (New York, N.Y.)》1985,228(4703):1094-1096
In this study, two glycoproteins (gp160 and gp120) that are encoded by human T-cell lymphoma virus type III (HTLV-III) were the antigens most consistently recognized by antibodies found in patients with the acquired immune deficiency syndrome (AIDS) and with the AIDS-related complex (ARC) and in healthy homosexual males. The techniques used to detect the glycoproteins were radioimmunoprecipitation and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (RIP/SDS-PAGE). Although most antibody-positive samples from ARC patients and from healthy homosexual males also reacted with the virus core protein p24, less than half of the AIDS patients revealed a positive band with p24 under the same conditions. The ability to detect antibodies against a profile of both the major env gene encoded antigens and the gag gene encoded antigens suggests that the RIP/SDS-PAGE may be a valuable confirmatory assay for establishing the presence or absence of antibodies to HTLV-III in human serum samples. 相似文献