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应用鸡胚法氏囊原代细胞培养鸡IBDV的研究 总被引：3，自引：0，他引：3
试用鸡胚法氏囊奈代细胞传代，增殖鸡传染性法氏囊病病毒（ＩＢＤＶ），均不同程度地产生特征性细胞病变效应，采用双抗体夹心法ＥＬＩＳＡ和细胞毒回归鸡试验证实，ＩＢＤＶＨ株组织感毒适应于鸡胚法氏囊细胞，并随传代次数增加，病毒增殖能力增强，而在鸡胚成纤维细胞上盲传２代之后才开始出现细胞病变效应，比较了ＩＢＤＶ在鸡胚法氏囊细胞和鸡胚成纤维细胞上增殖能力的差异，讨论了培养基ＰＨ值，小牛血清浓度对鸡胚法氏囊细胞培 相似文献
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试用鸡胚法氏囊原代细胞传代、增殖鸡传染性法氏囊病病毒（ＩＢＤＶ），均不同程度地产生特征性细胞病变效应。采用双抗体夹心法ＥＬＩＳＡ和细胞毒回归鸡试验证实，ＩＢＤ－ＶＨ株组织毒适应于鸡胚法氏囊细胞，并随传代次数增加，病毒增殖能力增强；而在鸡胚成纤维细胞上盲传２代之后才开始出现细胞病变效应。比较了ＩＢＤＶ在鸡胚法氏囊细胞和鸡胚成纤维细胞上增殖能力的差异，讨论了培养基ＰＨ值、小牛血清浓度对鸡胚法氏囊细胞培养及病毒增殖的影响。 相似文献
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鸡全胚成纤维细胞在鸡痘细胞活疫苗生产中的应用 总被引：2，自引：1，他引：1
采用鸡胚全部组织(全胚法)制备鸡胚成纤维单层细胞和采用鸡胚部分组织(常规法)制备鸡胚成纤维单层细胞生产了鸡痘细胞活疫苗,接毒后均产生大量的感染多核细胞和典型细胞融合性病变(胡椒粒样).鸡胚效价检测表明,鸡痘细胞苗和鸡痘组织苗均可引起鸡胚绒毛尿囊膜水肿、增厚或痘斑,但鸡痘细胞苗产生痘斑数量明显高于鸡痘组织苗.鸡体刺种结果表明,鸡痘细胞苗诱发的免疫反应(发痘)好于鸡痘组织苗;与常规法相比,全胚成纤维单层细胞制备方法可提高鸡胚利用率2倍以上.全胚法也可应用于制备其他鸡成纤维细胞疫苗. 相似文献
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取鸡传染性法氏囊病患鸡的法氏囊病料经氟利昂作用作杂蛋白，并经嵌油－酒石酸钾密度梯度离心进一步纯化；细胞适应毒在鸡胚成纤维细胞上出现明显细胞病变后冻融、ＰＥＧ沉淀纯化。电镜观察、吸光度测定和聚丙烯酰胺凝胶电泳的结果表明，得到了完整形态的鸡传染性法氏囊病病毒。 相似文献
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宋继军 《畜牧兽医科技信息》2010,(10)
在伪狂犬病活疫苗和法氏囊病毒GT株生产上均需制备鸡胚成纤维细胞.在制备鸡胚成纤维细胞过程中,对用连续消化法与玻璃珠分散法两种方法进行比较,结果表明:用玻璃珠分散法制备细胞,易使死亡细胞数大幅增加,在生产中加大成本,并在旋转培养中,影响活细胞的贴壁及生长;而采用胰酶连续消化法制备的细胞,贴壁较好、成活率高,但比前者工作量大;结合两者优点,找出了制备鸡胚成纤维细胞最佳的方法. 相似文献
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将鸡传染性法氏囊病(IBD)弱毒鸡胚疫苗病毒适应于鸡胚成纤维细胞,使之成 IBD 弱毒细胞疫苗,代号为B-2.疫苗毒价稳定在10~7 TCID_(50)ml.可采用滴鼻、点眼或饮水等途径免疫.实验室试验,对雏鸡安全,被免疫鸡的免疫活性不受影响,野外试验,可有效控制 IBD 和减少死亡率,对新城疫免疫不发生干扰. 相似文献
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将鸡传染性法氏囊病病毒的鸡胚组织毒或法氏囊组织毒直接在鸡胚成纤维细胞(CEF)上盲传3～13代后。能产生特征性细胞病变效应(CPE)。病毒在含65℃灭能30分钟的犊牛血清的细胞生长液制备的CEF上传代,比在含有56℃灭能的犊牛血清的生长液制备的CEF上传代能早3～5代出现CPE,而得到适应;鸡胚高代毒比鸡胚低代毒更易适应CEF;法氏囊组织毒和鸡胚低代毒对适应CEF的进程没有显著差异。 相似文献
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本文对鸡法氏囊提取液与ND活疫苗的使用方法进行了分析。通过血凝抑制抗体滴度的测定结果表明,预先接种鸡法氏囊提取液时,经肌肉注射、口服和点眼滴鼻接种方式均能提高ND疫苗免疫鸡的抗体产生能力,且经肌肉注射法最佳。但是,在整个试验期间,法氏囊提取液只能增强鸡群对ND活疫苗的早期免疫应答,而法氏囊提取液与ND活疫苗同时使用时更能刺激免疫鸡群的早期抗体产生水平。 相似文献
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Velhner M Mitevski D Potkonjak D Stojanović D Kovačević M Petrović T Aleksić-Kovačević S 《Acta veterinaria Hungarica》2010,58(4):499-509
The biological properties of an infectious bursal disease (IBD) virus isolated from bursas collected during an outbreak in a village chicken flock in Macedonia are described. The mortality rate was 50%. Two viruses coexisted in the bursas of infected chickens (IBDVwt and IBDVtc). The virus termed IBDVtc grows on chicken embryo fibroblast (CEF) cells from the first passage. Specific pathogen free chickens inoculated with IBDVtc at passage level 4 did not develop any clinical signs of disease. Some discrete bleeding on the leg muscles was seen and the bursa of Fabricius revealed pathological lesions similar to those caused by classical strains. However, the bursa recovered quickly (bursa lesion score 2) by 14 days post infection (PI). We also found evidence of bursal repopulation by means of perinuclear antigen staining. Strong CD3 influx was evident at 4 days PI, and at 33 days PI the CD3+ cell finding was comparable to the control. The mean antibody titre was 9.2 log 2 at 14 days PI. The amino acid composition of VP2 in IBDVwt (222 Ala, 242 Ile, 253 Gln, 256 Ile, 279 Asp, 284 Ala, 294 Ile and 299 Ser) is described. The same sequence was found in IBDVtc, except for two point mutations, at Gln253→His and Ala284→Thr. Such amino acid substitution is responsible for partial attenuation and the ability of the strain to replicate in cell culture. None of the commercial vaccine viruses has a similar arrangement of amino acids in the variable domain of IBDV. This strongly suggests that IBDVtc originates from a very virulent strain. To the best of our knowledge, this is the first report of a concomitant infection of chickens with highly pathogenic IBDV and its mutant counterpart. 相似文献
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The bursa of Fabricius is critical for the normal development of B lymphocytes in avian species. Productive colonization of bursal follicles by B cell precursors requires surface immunoglobulin expression. We have shown using retroviral gene transfer that expression of chimeric receptors containing the extracellular and transmembrane domains of murine CD8alpha and CD8beta fused to the cytoplasmic domains of chicken Igalpha and Igbeta can support productive bursal colonization in the chicken embryo in bursal cells lacking the expression of endogenous sIgM. We show here that chimeric receptor expression does not support continued bursal cell development after hatch. However intrabursal administration of anti-CD8 antibodies that ligate the CD8alpha:Igalpha chimeric receptor results in maintained numbers of bursal cells that express the chimeric receptor in the absence of endogenous sIgM. These results support a model in which sIgM receptor expression is required for productive bursal colonization in the chick embryo but sIgM receptor ligation is required to support later B cell development after hatch. 相似文献
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The effect of oil-emulsion vaccines on the occurrence of nonspecific plate agglutination reactions for Mycoplasma gallisepticum and M. synoviae 总被引：1，自引：0，他引：1
Six groups of ten 18-week-old mycoplasma-free white leghorn pullets were vaccinated with one of the following: Mycoplasma gallisepticum (MG) bacterin. Haemophilus gallinarum bacterin, Pasteurella multocida bacterin, combined infectious bursal disease (IBD)-Newcastle (NDV) chicken-embryo-origin (CEO) vaccine. IBD-NDV tissue-culture-origin (TC) vaccine, or saline emulsified in oil; one group received no vaccine. Plate agglutination tests for M. synoviae (MS) and MG were done for 10 weeks after vaccination using three different test antigens. Pullets vaccinated with H. gallinarum bacterin and IBD-NDV TC vaccine showed the greatest incidence of nonspecific plate agglutination reactions. The incidence of positive plate agglutination reactions varied with test antigens. Five groups of fifty 18-week-old mycoplasma-free heavy-breed pullets were vaccinated with one of the following: saline emulsified in oil, chicken embryo fibroblasts emulsified in oil, allantoic fluid emulsified in oil, chicken embryos emulsified in oil, or MS-contaminated chicken embryos emulsified in oil. Plate agglutination tests for MS and MG were done for 8 weeks after vaccination. Chickens vaccinated with chicken embryo fibroblasts emulsified in oil had the greatest incidence of nonspecific plate agglutination reactions. Pullets vaccinated with MS-contaminated chicken embryo vaccine had only a small increase in MS-positive plate agglutination reactions compared with pullets vaccinated with uncontaminated chicken embryo vaccine. 相似文献
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Three mammalian continuous cell lines--MA-104, Vero, and BGM-70--were tested for their ability to support replication of infectious bursal disease virus (IBDV). Selected tissue-culture-adapted vaccine strains and tissue-culture-adapted field isolates of IBDV replicated in the MA-104, Vero, and BGM-70 cells; cytopathic effects were most pronounced in the BGM-70 cells. The cytopathic effects of the viruses in BGM-70 cells and chicken embryo fibroblast (CEF) cultures were similar. Virus-neutralization titers of selected serum samples determined in BGM-70 cultures compared well with those obtained from CEF cultures. 相似文献
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为了方便鸡粒细胞/巨噬细胞集落细胞刺激因子（GM-CSF）作为疫苗佐剂使用,用PCR方法扩增出鸡GM-CSF基因,将其连入人腺病毒穿梭载体pAdTrack-CMV,将重组穿梭载体与腺病毒骨架重组后,获得重组腺病毒骨架载体,线性化后转染293SD细胞,获得能够表达鸡GM-CSF的腺病毒。将获得的重组腺病毒转导鸡成纤维细胞系DF1,细胞培养上清中,可以检测到GM-CSF刺激鸡骨髓细胞活性,为鸡GM-CSF进一步应用奠定了基础。 相似文献
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K M Lam 《Avian diseases》1988,32(4):818-821
Infectious bursal disease virus types 1 and 2 were able to induce direct lysis of chicken bursal cells, thymus cells, and peripheral blood lymphocytes in chromium-release assays. These two viruses were unable to lyse two established lymphoblastoid cell lines, although IBDV-1 was capable of multiplying in MSB-1 cells. 相似文献
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Pahar, B. and Rai, A., 1997. The characterization of infectious bursal disease virus strains/isolates from field outbreaks in India. Veterinary Research Communications, 21 (4), 289-301Three infectious bursal disease virus (IBDV) isolates were adapted to culture in chick embryo fibroblast cells in which they produced a cytopathic effect. The isolates were identified as IBDV by virus neutralization tests using a standard hyperimmune serum against infectious bursal disease, physicochemical properties and their pathogenicity in chick embryos and chicks. The IBDV S394 strain was antigenically different from IBDV S194/IBDV S494 as well as from the IBDV Intermediate Georgia strain, one of the vaccine strains in use in India. 相似文献