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为了合成氯霉素(CAP)人工抗原并制备抗体,试验建立CAP残留的酶联免疫吸附试验(ELISA)法,采用重氮化法将半抗原CAP与牛血清白蛋白(BSA)进行偶联,制得免疫抗原,然后与卵清白蛋白(OVA)进行偶联,制得包被抗原,通过紫外光谱扫描鉴定是否偶联成功;用免疫抗原免疫KM小鼠,制备CAP多克隆抗体,并通过间接ELISA法测定抗体效价。结果表明:通过紫外光谱扫描,CAP-BSA在275 nm处为最大吸收峰,CAP-OVA在276 nm处为最大吸收峰;并且免疫KM小鼠得到的抗体效价高达1∶128 000。说明试验成功制备了CAP人工抗原,并且获得了高效价的多克隆抗体,也进一步证明了药物偶联成功。 相似文献
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为了合成恩诺沙星（enrofloxacin,EFLX）完全抗原,制备兔源多克隆抗体血清,试验通过活化酯法将小分子的EFLX偶联到牛血清白蛋白（BSA）和鸡卵清白蛋白(OVA)上,形成偶联物EFLX-BSA和EFLX-OVA,以EFLX-BSA为免疫原免疫兔,以EFLX-OVA为检测原通过ELISA方法检测兔血清效价。结果表明,免疫兔血清效价都在1∶51200以上,其中2号兔效价最高,达到1∶204800,敏感性好,半数抑制浓度IC50为169.91 ng/mL,检测范围为37.52～302.31 ng/mL。本试验成功制备了EFLX完全抗原,获得了敏感的兔源多克隆抗体血清,为以后ELISA试剂盒和胶体金试纸条的研发奠定了基础。 相似文献
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为检测抗黄曲霉素抗体建立了一种新颖而简便的间接酶联免疫吸附试验(ELISA),该法是用黄曲霉素M_1-牛血清白蛋白(AFM_1)-BSA)结合物免疫雌性BALB/CJ小鼠制备抗黄曲霉素M_1抗体。试验用易得的-AFM_1-BSA和黄曲霉素B_1牛血清白蛋白(AFB_2-BSA)来包被试验板,适于检测普通环戊并甲氧基碳-肟法结合的任何黄曲霉素。本法对开发及改进测定黄曲霉素代谢产物抗体的免疫测定方法很有价值。 相似文献
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《中国兽医学报》2020,(6)
为探讨猪繁殖与呼吸综合征病毒(PRRSV)GP5和M蛋白滴鼻免疫小鼠后产生的特异性抗体的中和活性,研究以原核表达的重组蛋白GP5和M为抗原分别与霍乱毒素B亚基(CTB)佐剂按10∶1的比例混合制备成CTB黏膜佐剂疫苗,滴鼻免疫小鼠,于首次免疫后0,7,14,21,28,35,42 d收集唾液和血清样品,利用间接ELISA方法分别检测免疫小鼠唾液中特异性抗体IgA,结果均于28 d时S/N值达到最高,ELISA效价均为1∶2;血清中特异性抗体IgG分别于21,28 d时S/N值达到最高,ELISA效价均为1∶800。通过本实验室建立的基于PAM细胞中和试验方法分别检测唾液中特异性抗体IgA和血清中特异性抗体IgG中和滴度均1∶2,结果表明PRRSV GP5和M蛋白滴鼻免疫小鼠后产生的特异性抗体未达到免疫保护作用的中和抗体水平。 相似文献
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抗氨苄青霉素单克隆抗体的制备及初步鉴定 总被引：4，自引：2，他引：2
利用碳化二亚胺(EDC)法将氨苄青 霉素(Ampicillin,AMP)与匙孔嘁血蓝蛋白 (mcKLH)偶联制备免疫原免疫Balb/c小鼠, 应用杂交瘤技术将免疫鼠脾细胞与小鼠骨髓 瘤细胞(SP2/0)融合,建立分泌氨苄青霉素单 克隆抗体的杂交瘤细胞株。同上方法将氨苄 青霉素连接到阳离子化的牛血清白蛋白(cB SA)上制备检测抗原,对AMP KLH偶联物 免疫小鼠产生的抗体进行检测。通过对杂交 瘤细胞培养上清的检测、鉴定,筛选出8株高 亲和力的杂交瘤细胞株,用其制备的腹水 ELISA效价达到2×106,纯化后的单克隆抗 体(McAb)可以应用于氨苄青霉素残留的快 速检测。 相似文献
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Beran GW 《Preventive veterinary medicine》2008,86(3-4):198-207
When early people made their appearance, zoonotic infectious diseases were already waiting, but epidemic diseases did not appear in human history until people began to live in large numbers under conditions of close contact, mainly during the last 10,000 years. Disease has decimated urban populations, conquered armies, and disrupted society. The focus here is on (1) the plague of Athens and the Black Death; (2) smallpox, influenza, and rabies; (3) avian influenza prion diseases, and foot & mouth disease; and (4) emerging and re-emerging diseases. All have veterinary public health associations. In Athens, Greece, in 430 BC, when the Spartans ravaged the countryside, hordes crowded into Athens so that orderly movements, space in which to live, and adequate supplies of food became impossible. Crowding of any population fosters disease transmission; chaos and disorder enhance it all the more. Out of northern Egypt came a terrible plague from across the Mediterranean Sea. The identity of the plague of Athens remains unsure, but the well-considered conclusion is Rift Valley Fever, a mosquito borne, viral zoonosis. The Black Death, also called the Plague, raged in Asia for centuries. In 1347, the Black Death was brought by a ship out of Asia to Sicily. The scenes of devastation were repeated throughout Europe, with 90% or more of the people dying in city after city. Influenza, too, has been a cause of periodic human epidemics, but the great pandemic of influenza occurred in the last months of World War I. In the years of highest occurrence, more than half the world's population became clinically infected. If veterinary public health had been born earlier, it could have led to elucidating the epidemiology of influenza and the plagues of Athens, Europe, and Asia. In turn, smallpox had also caused continual tragedy. In 1796, Edward Jenner began to harvest pustules of cowpox from children or infected cows and inject them into susceptible children. In 1980, the World Health Organization declared that smallpox had been eliminated from the world. Rabies, though, still strikes terror. A number of animal diseases, broadly termed emerging and re-emerging diseases, need surveillance because they have the potential to impact human health. From late in 2003 to 2007, the highly pathogenic H5N1 influenza virus in poultry infected at least 121 people and caused 62 deaths in four countries. The prion diseases, too, all have very high numbers in concentrated contacts. To control these diseases, veterinary public health is essential, with diagnosis, epidemiological surveillance, clinical manifestations, and prevention as primary measures. 相似文献
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Dekker A Dercksen D Snoep J van Wuyjckhuise L 《Tijdschrift voor diergeneeskunde》2007,132(18):695-701
On 26th of july 2007 a new case of bluetongue was notified in the Netherlands and on 2nd of august 2007 foot-and-mouth disease was diagnosed in Surrey, England, which raised the threat of having both infections simultaniously in one area. Bluetongue and foot-and-mouth disease have a different pathogenesis, but symptoms may resemble each other at a later stage of infection. The pathogenesis and possible clinical symptoms of both infections are discussed and illustrated with pictures. 相似文献
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在动物的异常行为中以刻板行为最为常见,而咽气癖又是马最常见的口部刻板行为之一。作者就咽气癖在生理方面和心智方面对马体产生的影响、行为基础、诱因的研究进展及常见的防治措施进行综述。 相似文献
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近几年,世界饲用添加剂市场增长较快,预计今后将进一步增长,据世界粮农组织(FAO)首领会议的倡议,到2015年,将使世界营养不良的人口削减一半,其间,肉制品将会以每年2％的速度增长,特别是加快猪肉和禽肉增长。这将促进世界添加剂,尤其是蛋氨酸和赖氨酸需求量的增加。 相似文献
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