Pathogenicity and innate response to Avibacterium paragallinarum in chickens
发布时间：2022-01-29点击次数：
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影响因子：3.352
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DOI码：10.1016/j.psj.2021.101523
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所属单位：扬州大学
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发表刊物：Poultry Science
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关键字：Avibacterium paragallinarum, infectious coryza, pathogenicity, chicken, innate immunity
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摘要：Infectious coryza (IC) is an acute infectious upper respiratory disease in chickens. Recently, the prevalence of IC has increased in China. In this study, to clarify the pathogenic mechanism and innate immune response of Avibacterium paragallinarum (A. paragallinarum), an infection experiment with A. paragallinarum was conducted. Our results showed that the whole course of IC was approximately 7 d. The clinical signs score was highest at 3 dpi and decreased from 5 dpi. A large amount of mucus and exudates was found in the infraorbital sinuses and nasal cavity. The A. paragallinarum contents in blood remained the highest, reaching 9.16 x 10(5) CFU/g at 5 dpi, which indicated that A. paragallinarum could rapidly invade the host, replicate in the blood and cause bacteremia. A. paragallinarum targets the upper respiratory tract. The infiltration of inflammatory cells, macrophages, and heterophilic granulocytes was only observed in the nasal cavity and infraorbital sinus. The Tlr4 and Nod1 pathways were activated and induced proinflammatory responses in chickens after infection with A. paragallinarum. The expression of Il1beta and Il6 in the nasal cavity was significantly higher than that in the spleen, and it was consistent with the gross lesions and pathological changes. In particular, the expression of Il6 increased 229.07-fold at 1 dpi in the nasal cavity and increased 3.12-fold in the spleen. The high level of proinflammatory cytokines in the nasal cavity at an early stage of infection may be the main factor related to acute upper respiratory inflammation in chickens. These findings provide a reference for the occurrence and development of diseases mediated by A. paragallinarum.
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合写作者：刘栋辉,陈秀芳,吴艳涛
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第一作者：郭梦娇
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论文类型：Research Atricle
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通讯作者：张小荣
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学科门类：农学
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一级学科：兽医学
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文献类型：J
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卷号：101
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期号：1
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页面范围：101523
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ISSN号：1525-3171
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是否译文：否
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发表时间：2021-11-17
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收录刊物：SCI
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张小荣
个人信息
- 正高级
博士生导师
硕士生导师 - 教师拼音名称：Zhang Xiaorong
- 出生日期：1978-09-30
- 电子邮箱：
- 入职时间：2003-07-01
- 所在单位：兽医学院
- 学历：博士研究生毕业
- 办公地点：文汇路校区农牧南楼S203
- 性别：男
- 联系方式：E.mail:zxr@yzu.edu.cn
- 学位：博士
- 职称：正高级
- 在职信息：在岗
- 毕业院校：扬州大学
- 学科：预防兽医学
曾获荣誉：
- 2021-12-31扬州大学“十三五”科技工作先进个人
- 2021-10-222020-2021学年“最受学生欢迎的班主任”
- 2017-06-302016年江苏省普通高等学校本专科毕业设计（论文）三等奖指导教师
- 2016-01-182014-2015学年“最受学生欢迎的班主任”
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