tetano
Editor, Senior Moderator
Vet Microbiol
. 2024 Jun 24:295:110163.
doi: 10.1016/j.vetmic.2024.110163. Online ahead of print. Co-infection of H9N2 subtype avian influenza virus and QX genotype live attenuated infectious bronchitis virus increase the pathogenicity in SPF chickens
Qinghua Huang[SUP] 1 [/SUP], Xiao Yang[SUP] 2 [/SUP], Xiaoran Zhao[SUP] 2 [/SUP], Xiaoxia Han[SUP] 3 [/SUP], Shouli Sun[SUP] 1 [/SUP], Chuantian Xu[SUP] 1 [/SUP], Ning Cui[SUP] 4 [/SUP], Mei Lu[SUP] 5 [/SUP]
Affiliations
Avian influenza virus (AIV) infection and vaccination against live attenuated infectious bronchitis virus (aIBV) are frequent in poultry worldwide. Here, we evaluated the clinical effect of H9N2 subtype AIV and QX genotype aIBV co-infection in specific-pathogen-free (SPF) white leghorn chickens and explored the potential mechanisms underlying the observed effects using by 4D-FastDIA-based proteomics. The results showed that co-infection of H9N2 AIV and QX aIBV increased mortality and suppressed the growth of SPF chickens. In particular, severe lesions in the kidneys and slight respiratory signs similar to the symptoms of virulent QX IBV infection were observed in some co-infected chickens, with no such clinical signs observed in single-infected chickens. The replication of H9N2 AIV was significantly enhanced in both the trachea and kidneys, whereas there was only a slight effect on the replication of the QX aIBV. Proteomics analysis showed that the IL-17 signaling pathway was one of the unique pathways enriched in co-infected chickens compared to single infected-chickens. A series of metabolism and immune response-related pathways linked with co-infection were also significantly enriched. Moreover, co-infection of the two pathogens resulted in the enrichment of the negative regulation of telomerase activity. Collectively, our study supports the synergistic effect of the two pathogens, and pointed out that aIBV vaccines might increased IBV-associated lesions due to pathogenic co-infections. Exacerbation of the pathogenicity and mortality in H9N2 AIV and QX aIBV co-infected chickens possibly occurred because of an increase in H9N2 AIV replication, the regulation of telomerase activity, and the disturbance of cell metabolism and the immune system.
Keywords: Avian influenza virus; Co-infection; Live attenuated infectious bronchitis virus; Pathogenicity; Proteomic.
. 2024 Jun 24:295:110163.
doi: 10.1016/j.vetmic.2024.110163. Online ahead of print. Co-infection of H9N2 subtype avian influenza virus and QX genotype live attenuated infectious bronchitis virus increase the pathogenicity in SPF chickens
Qinghua Huang[SUP] 1 [/SUP], Xiao Yang[SUP] 2 [/SUP], Xiaoran Zhao[SUP] 2 [/SUP], Xiaoxia Han[SUP] 3 [/SUP], Shouli Sun[SUP] 1 [/SUP], Chuantian Xu[SUP] 1 [/SUP], Ning Cui[SUP] 4 [/SUP], Mei Lu[SUP] 5 [/SUP]
Affiliations
- PMID: 38959807
- DOI: 10.1016/j.vetmic.2024.110163
Avian influenza virus (AIV) infection and vaccination against live attenuated infectious bronchitis virus (aIBV) are frequent in poultry worldwide. Here, we evaluated the clinical effect of H9N2 subtype AIV and QX genotype aIBV co-infection in specific-pathogen-free (SPF) white leghorn chickens and explored the potential mechanisms underlying the observed effects using by 4D-FastDIA-based proteomics. The results showed that co-infection of H9N2 AIV and QX aIBV increased mortality and suppressed the growth of SPF chickens. In particular, severe lesions in the kidneys and slight respiratory signs similar to the symptoms of virulent QX IBV infection were observed in some co-infected chickens, with no such clinical signs observed in single-infected chickens. The replication of H9N2 AIV was significantly enhanced in both the trachea and kidneys, whereas there was only a slight effect on the replication of the QX aIBV. Proteomics analysis showed that the IL-17 signaling pathway was one of the unique pathways enriched in co-infected chickens compared to single infected-chickens. A series of metabolism and immune response-related pathways linked with co-infection were also significantly enriched. Moreover, co-infection of the two pathogens resulted in the enrichment of the negative regulation of telomerase activity. Collectively, our study supports the synergistic effect of the two pathogens, and pointed out that aIBV vaccines might increased IBV-associated lesions due to pathogenic co-infections. Exacerbation of the pathogenicity and mortality in H9N2 AIV and QX aIBV co-infected chickens possibly occurred because of an increase in H9N2 AIV replication, the regulation of telomerase activity, and the disturbance of cell metabolism and the immune system.
Keywords: Avian influenza virus; Co-infection; Live attenuated infectious bronchitis virus; Pathogenicity; Proteomic.