浙江农业学报 ›› 2022, Vol. 34 ›› Issue (1): 33-40.DOI: 10.3969/j.issn.1004-1524.2022.01.05

• 动物科学 • 上一篇    下一篇

隐绿原酸对H9N2-AIV致小鼠肺损伤的免疫调节和抗氧化效果

张昕1(), 张铭1, 何宏轩2,*(), 胡延春1,*()   

  1. 1.四川农业大学 动物医学院,四川 成都 611130
    2.中国科学院 动物研究所,北京 100101
  • 收稿日期:2020-09-14 出版日期:2022-01-25 发布日期:2022-02-05
  • 通讯作者: 何宏轩,胡延春
  • 作者简介:何宏轩,E-mail: hehx@ioz.ac.cn
    * 胡延春,E-mail: hychun114@163.com;
    张昕(1996—),女,四川巴中人,硕士研究生,研究方向为动物疾病诊疗。E-mail: 903391909@qq.com
  • 基金资助:
    北京市家禽产业创新团队(BAIC04-2020)

Effect of cryptochlorogenic acid on immunomodulatory and antioxidant in mice of lung injury induced by H9N2-AIV

ZHANG Xin1(), ZHANG Ming1, HE Hongxuan2,*(), HU Yanchun1,*()   

  1. 1. College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
    2. Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
  • Received:2020-09-14 Online:2022-01-25 Published:2022-02-05
  • Contact: HE Hongxuan,HU Yanchun

摘要:

为探讨隐绿原酸(4-CQA)对感染H9N2亚型禽流感(H9N2-AIV)病毒的小鼠造成肺损伤的修复作用,将90只6~8周龄健康昆明系小鼠随机分为病毒(H9N2)感染组、H9N2+4-CQA组、空白对照组、4-CQA对照组,用H9N2-AIV滴鼻复制小鼠肺损伤模型并灌胃4-CQA干预。观察各组小鼠肺组织病理学变化;测定肺指数及肺内丙二醛(MDA)、总超氧化物歧化酶(T-SOD)、髓过氧化物酶(MPO)含量;测定脾内T淋巴细胞亚群CD4+、CD8+百分比及比率(CD4+/CD8+)。结果显示,H9N2组小鼠表现出精神沉郁、呼吸急促;肺指数上升、脾指数下降;肺组织病理学表现为肺泡萎缩、肺泡隔增厚、局部肺实变;T淋巴细胞亚群CD4+/CD8+比率显著下降(P<0.05);肺内T-SOD活性显著下降、MDA含量显著增加、MPO活性显著升高(P<0.05)。4-CQA干预后,小鼠肺指数下降、脾指数上升;肺组织病理学损伤减轻;T淋巴细胞亚群CD4+/CD8+比率显著上升(P<0.05);肺内T-SOD活性显著升高,MDA含量显著降低,MPO活性显著下降(P<0.05)。得出4-CQA可通过维持机体免疫平衡、降低机体氧化损伤来缓解由H9N2亚型AIV诱导的小鼠肺损伤。

关键词: H9N2亚型禽流感病毒, 隐绿原酸, 肺损伤, 免疫调节, 抗氧化

Abstract:

To investigate the effect of cryptochlorogenic acid(4-CQA)on lung injury and recovery in mice infected with avian influenza H9N2 virus, ninety SPF KM mice(6-8 weeks old)were randomly divided into H9N2 group,H9N2+4-CQA group, control group and 4-CQA group. Then H9N2-AIV was used to induce lung injury and received 4-CQA intragastric administration respectively in mice. The lung histopathlogy changes, the lung index and spleen index, and the contents of malondialdehyde (MDA),total superoxide dismutase (T-SOD) and myeloperoxidase (MPO) in the lung tissue homogenate, and the ratio of T cell subgroups (CD4+、CD8+、CD4+/CD8+) were observed. The results showed that the group of H9N2 presented depression and shortness of breath; lung index increased and spleen index decreased; histopathological manifestations of lung were alveolar atrophy, alveolar septal thickening and local lung consolidation; CD4+/CD8+ ratio of T lymphocyte subsets decreased significantly (P<0.05), activity of T-SOD decreased significantly, content of MDA increased significantly, and activity of MPO increased significantly (P<0.05). After 4-CQA treatment, lung index decreased and spleen index increased; lung histopathological damage was alleviated; CD4+/CD8+ ratio of T cell subgroups was significantly increased (P<0.05); T-SOD and MPO activity in lung were significantly increased and the content of MDA was significantly decreased (P<0.05). It was concluded that 4-CQA can alleviate the lung injury induced by avian influenza H9N2 virus by maintaining immune balance and reducing oxidative damage.

Key words: H9N2-AIV, 4-CQA, lung injury, immunomodulation, antioxidant

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