畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (6): 1232-1238.doi: 10.11843/j.issn.0366-6964.2016.06.019

• 预防兽医 • 上一篇    下一篇

副猪嗜血杆菌SC096株荚膜多糖抗猪肺泡巨噬细胞吞噬能力的研究

周琪1,贺现辉1,阳巧梅2,冯赛祥1,樊惠英1* ,廖明1*   

  1. (1.华南农业大学兽医学院,广州 510642;2.邵阳职业技术学院,邵阳 422000)
  • 收稿日期:2015-10-21 出版日期:2016-06-23 发布日期:2016-06-23
  • 通讯作者: 廖明,男,教授,E-mail: mliao@scau.edu.cn; 樊惠英,女,教授,E-mail:hyfan@scau.edu.cn
  • 作者简介:周琪(1991-),女,江西兴国人,硕士生,主要从事动物传染病学研究,E-mail: 15909348676@163.com
  • 基金资助:

    农业部公益性行业科研专项经费项目(201303034);农业科研杰出人才及其创新团队-现代农业人才支撑计划项目[农财发(2012)160号];教育部博士点基金项目(20114404110016);广东省"三高"农业专项资金(5500-F15071)

Role of Capsular Polysaccharide in Haemophilus parasuis SC096 Strain Anti-Porcine Alveolar Macrophage Phagocytosis

ZHOU Qi1,HE Xian-hui1,YANG Qiao-mei2,FENG Sai-xiang1,FAN Hui-ying1*,LIAO Ming1*   

  1. (1.College of Veterinary Medicine,South China Agricultural University,Guangzhou 510642,China;2.Shaoyang Polytechnic,Shaoyang 422000,China)  
  • Received:2015-10-21 Online:2016-06-23 Published:2016-06-23

摘要:

为探讨荚膜多糖在副猪嗜血杆菌(Haemophilus parasuis)抗猪肺泡巨噬细胞吞噬中的作用,作者用间接免疫荧光试验和流式细胞术对H.parasuis SC096分离株及其荚膜缺陷型菌株进行了抗巨噬细胞吞噬试验。间接免疫荧光试验显示野生菌株组的H.parasuis大多数存在于巨噬细胞外,而荚膜多糖缺失突变体则主要存在于巨噬细胞内。流式细胞仪检测结果表明,对应的野生型菌株组巨噬细胞总的吞噬率为12.51%,吞入效率为89.61%;而荚膜多糖缺陷型组巨噬细胞总的吞噬率为27.18%,吞入效率为91.06%。加入外源荚膜多糖后,野生型菌株组巨噬细胞总的吞噬率降为2.72%,吞入效率降为32.72%;荚膜多糖缺陷型组巨噬细胞总的吞噬率降为3.59%,吞入效率基本不变,为91.36%。荚膜多糖缺失后H.parasuis 抗巨噬细胞吞噬能力降低,表明H.parasuis SC096株荚膜多糖具有抑制巨噬细胞吞噬能力的作用。

Abstract:

The aim of the experiment was to clarify the role of the capsular polysaccharide in anti-porcine alveolar macrophage phagocytosis of Haemophilus parasuis.The anti-phagocytosis test was conducted by using indirect immunofluorescence method and flow cytometry with H.parasuis SC096 wild-type strain,and capsular deficient strain.The results showed that the H.parasuis SC096 wild-type strains were observed mainly outside the macrophages,while capsular polysaccharide-deficient were observed in macrophages by indirect immunofluorescence experiments.Flow cytometry results showed that the total macrophage phagocytosis rate was 12.51% and swallowed efficiency was 89.61% in the wild-type strain group;the total macrophage phagocytosis rate was 27.18% and swallowed efficiency was 91.06% in the capsular polysaccharide-deficient group.By adding exogenous capsular polysaccharide,total macrophage phagocytosis rate was reduced to 2.72%,swallowed efficiency was reduced to 32.72% in the wild-type strain group;the total macrophage phagocytosis rate dropped to 3.59%,swallowed efficiency was nearly unchanged at 91.36% in the capsular polysaccharide-deficient group.The ability of anti-macrophage phagocytosis of H.parasuis was reduced through removing capsular polysaccharide,which demonstrated that capsular polysaccharide may inhibit the ability of macrophage phagocytosis.

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