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Vahsen T, Zapata L, Guabiraba R, Melloul E, Cordonnier N, Botterel F, Guillot J, Arné P, Risco-Castillo V. Cellular and molecular insights on the regulation of innate immune responses to experimental aspergillosis in chicken and turkey poults. Med Mycol 2020; 59:465-475. [PMID: 32844181 DOI: 10.1093/mmy/myaa069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 07/20/2020] [Accepted: 08/21/2020] [Indexed: 02/06/2023] Open
Abstract
Across the world, many commercial poultry flocks and captive birds are threatened by infection with Aspergillus fumigatus. Susceptibility to aspergillosis varies among birds; among galliform birds specifically, morbidity and mortality rates seem to be greater in turkeys than in chickens. Little is known regarding the features of avian immune responses after inhalation of Aspergillus conidia, and to date, scarce information on inflammatory responses during aspergillosis exists. Thus, in the present study, we aimed to improve our understanding of the interactions between A. fumigatus and economically relevant galliform birds in terms of local innate immune responses. Intra-tracheal aerosolization of A. fumigatus conidia in turkey and chicken poults led to more severe clinical signs and lung lesions in turkeys, but leukocyte recovery from lung lavages was higher in chickens at 1dpi only. Interestingly, only chicken CD8+ T lymphocyte proportions increased after infection. Furthermore, the lungs of infected chickens showed an early upregulation of pro-inflammatory cytokines, including IL-1β, IFN-γ and IL-6, whereas in turkeys, most of these cytokines showed a downregulation or a delayed upregulation. These results confirmed the importance of an early pro-inflammatory response to ensure the development of an appropriate anti-fungal immunity to avoid Aspergillus dissemination in the respiratory tract. In conclusion, we show for the first time that differences in local innate immune responses between chickens and turkeys during aspergillosis may determine the outcome of the disease.
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Affiliation(s)
- Tobias Vahsen
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France
| | - Laura Zapata
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France
| | | | - Elise Melloul
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France
| | - Nathalie Cordonnier
- Biopôle Alfort, Ecole nationale vétérinaire d'Alfort, Maisons-Alfort, France
| | - Françoise Botterel
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France
| | - Jacques Guillot
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France.,Biopôle Alfort, Ecole nationale vétérinaire d'Alfort, Maisons-Alfort, France
| | - Pascal Arné
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France
| | - Veronica Risco-Castillo
- Dynamic research group EA 7380, Ecole nationale vétérinaire d'Alfort, UPEC, USC ANSES, Maisons-Alfort, France.,Biopôle Alfort, Ecole nationale vétérinaire d'Alfort, Maisons-Alfort, France
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Wang J, Li Y, Yin Y. Respiratory phagocytes are implicated in enhanced colibacillosis in chickens co-infected with influenza virus H9N2 and Escherichia coli. Br Poult Sci 2017; 59:160-165. [PMID: 29148834 DOI: 10.1080/00071668.2017.1406061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
1. The aim of this study was to determine the most likely time interval after infection with influenza virus H9N2 for co-infection with Escherichia coli to cause colibacillosis, the importance of lung load of E. coli and the involvement of respiratory phagocytes. 2. Specific pathogen free chickens were inoculated intranasally with 106EID50 of influenza virus or uninfected. After specified time intervals, 107 CFU E. coli or phosphate-buffered saline was inoculated. The presence of lesions, the number of respiratory phagocytes in the respiratory lavage fluid and the E. coli load in the lung were determined after different time intervals. 3. Compared with the number of lesions in chickens receiving only E. coli inoculation, the number lesions in co-infected chickens were increased at 0- and 3-d time intervals, but reduced in the groups at 6- and 9-d intervals between co-infection. 4. At 1-3 d after E. coli inoculation, the number of lesions chickens was correlated with the number of respiratory phagocytes harvested and related to the E. coli load in the lungs at 5 d. 5. These results suggest that the lesions caused by E. coli in chickens were increased within a 0-3 d interval following H9N2 virus inoculation and that this effect is related to the number of respiratory phagocytes.
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Affiliation(s)
- J Wang
- a College of Veterinary Medicine , Qingdao Agricultural University , Qingdao , China
| | - Y Li
- a College of Veterinary Medicine , Qingdao Agricultural University , Qingdao , China
| | - Y Yin
- a College of Veterinary Medicine , Qingdao Agricultural University , Qingdao , China
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Latif I, Karim A, Zuki A, Zamri-Saad M, Niu J, Noordin M. Pulmonary modulation of benzo[a]pyrene-induced hemato- and hepatotoxicity in broilers. Poult Sci 2010; 89:1379-88. [DOI: 10.3382/ps.2009-00622] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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