畜牧兽医学报 ›› 2013, Vol. 44 ›› Issue (5): 767-771.doi: 10.11843/j.issn.0366-6964.2013.05.014

• 预防兽医 • 上一篇    下一篇

猪肺炎支原体感染早期诱导猪呼吸道产生多种特异性IgA抗体分泌规律研究

姚景霆1,2,冯志新1,刘茂军1,熊祺琰1,白方方1,华利忠1,王海燕1,甘源1,韦艳娜1,邵国青1*   

  1. (1. 江苏省农业科学院兽医研究所 农业部兽用生物制品工程技术重点实验室 国家兽用生物制品工程技术研究中心,南京210014;2. 山西农业大学 动物科技学院,太谷 030801)
  • 收稿日期:2012-11-02 出版日期:2013-05-23 发布日期:2013-05-23
  • 通讯作者: 邵国青,研究员,E-mail:84391973@163.com
  • 作者简介:姚景霆(1988-),男,山西临汾人,硕士,主要从事微生物与传染病分子生物学的研究,E-mail: jingting_yao@126.com
  • 基金资助:

    江苏省自然科学基金[BK2011680];江苏省农业科技自主创新资金[CX(12)3065]

Research on the Initial Secretive Feature of Specific IgA Antibody in Respiratory Tract of Pigs Infected with Mycoplasma hyopneumoniae

YAO Jing-ting1,2, FENG Zhi-xin1, LIU Mao-jun1, XIONG Qi-yan1, BAI Fang-fang1, HUA Li-zhong1, WANG Hai-yan1, GAN Yuan1, WEI Yan-na1, SHAO Guo-qing1*   

  1. (1. Key Laboratory of Animal Diseases Diagnostic and Immunology of Ministry of Agriculture, National Center for Engineering Research of Veterinary Bio-products, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; 2. College of Animal Science and Technology, Shanxi Agricultural University, Taigu 030801, China)
  • Received:2012-11-02 Online:2013-05-23 Published:2013-05-23

摘要:

为了研究猪感染猪肺炎支原体早期,呼吸道针对病原不同功能蛋白分泌特异性IgA抗体的差异与规律,本研究通过已建立的猪肺炎支原体各蛋白的特异性IgA间接ELISA方法,分别检测7头试验猪在感染后第1、2、4、6、8、12、16和21天鼻拭子中抗P36、P46、P97R1的特异性IgA抗体滴度,并经过样品总蛋白浓度校准后,比较3种特异性IgA抗体在感染后21 d内的分泌规律。结果显示,在感染后第6天,呼吸道中抗猪肺炎支原体P36、P46、P97R1的3种特异性IgA抗体分泌量均开始上升,于感染后第12天达到高峰,并可持续到第21天,且同1 d内3种特异性IgA抗体之间的分泌量差异不显著(P>0.05)。本研究说明在猪肺炎支原体感染的早期阶段,P36、P46、P97R1蛋白均可诱发猪呼吸道产生特异性IgA抗体,且分泌量与分泌规律较为相似,差异不显著。

Abstract:

 This experiment was conducted to study the initial secretive features of specific IgA antibodies against P36, P46 and P97R1 proteins produced in the respiratory tract after the pigs were affected with Mycoplasma hyopneumoniae (Mhp). Total seven pigs were infected with Mhp strain. The nasal swabs were collected at the 1st, 2nd, 4th, 6th, 8th, 12th, 16th and 21st day post inoculation (dpi) to detect specific IgA titers against P36, P46, P97R1 proteins by the three established indirect enzyme-linked immunosorbent assays (ELISA). The IgA titers were normalized by the total protein concentration of nasal swab samples. The results showed that levels of three sorts of specific IgA start to rise at the 6th dpi and reach the peak at the 12th dpi. The high levels could be kept until to end of assay (the 21st dpi). The secretive features of three specific IgA antibodies were consistent as well as the secretive amounts on the same day (P>0.05). In conclusion, P36, P46 and P97R1 proteins could induce the specific IgA antibody in the respiratory tract during the early stage of infection with the same trends and secretive amounts.

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