1
|
Lazado CC, Iversen M, Johansen LH, Brenne H, Sundaram AYM, Ytteborg E. Nasal responses to elevated temperature and Francisella noatunensis infection in Atlantic cod (Gadus morhua). Genomics 2023; 115:110735. [PMID: 37898334 DOI: 10.1016/j.ygeno.2023.110735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 10/22/2023] [Accepted: 10/25/2023] [Indexed: 10/30/2023]
Abstract
We report the histological and transcriptomic changes in the olfactory organ of Atlantic cod exposed to Francisella noatunensis. Experimental infection was performed at either 12 °C or 17 °C. Infected fish presented the classic gross pathologies of francisellosis. Nasal morpho-phenotypic parameters were not significantly affected by elevated temperature and infection, except for the number of mucus cells in the 12 °C group seven weeks after the challenge. A higher number of genes were altered through time in the group reared at 17 °C. At termination, the nasal transcriptome of infected fish in both groups was similar to the control. When both infected groups were compared, 754 DEGs were identified, many of which were involved in signalling, defence, transmembrane and enzymatic processes. In conclusion, the study reveals that elevated temperature could trigger responses in the olfactory organ of Atlantic cod and shape the nasal response to F. noatunensis infection.
Collapse
Affiliation(s)
- Carlo C Lazado
- Nofima, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås 1431, Norway.
| | - Marianne Iversen
- Nofima, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Tromsø 9019, Norway
| | - Lill-Heidi Johansen
- Nofima, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Tromsø 9019, Norway
| | - Hanne Brenne
- Nofima, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Tromsø 9019, Norway
| | - Arvind Y M Sundaram
- Department of Medical Genetics, Oslo University Hospital and University of Oslo, Oslo, Norway
| | - Elisabeth Ytteborg
- Nofima, The Norwegian Institute of Food, Fisheries and Aquaculture Research, Ås 1431, Norway
| |
Collapse
|
2
|
Martínez D, Oyarzún-Salazar R, Quilapi AM, Coronado J, Enriquez R, Vargas-Lagos C, Oliver C, Santibañez N, Godoy M, Muñoz JL, Vargas-Chacoff L, Romero A. Live and inactivated Piscirickettsia salmonis activated nutritional immunity in Atlantic salmon ( Salmo salar). Front Immunol 2023; 14:1187209. [PMID: 37187753 PMCID: PMC10175622 DOI: 10.3389/fimmu.2023.1187209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/18/2023] [Indexed: 05/17/2023] Open
Abstract
Nutritional immunity regulates the homeostasis of micronutrients such as iron, manganese, and zinc at the systemic and cellular levels, preventing the invading microorganisms from gaining access and thereby limiting their growth. Therefore, the objective of this study was to evaluate the activation of nutritional immunity in specimens of Atlantic salmon (Salmo salar) that are intraperitoneally stimulated with both live and inactivated Piscirickettsia salmonis. The study used liver tissue and blood/plasma samples on days 3, 7, and 14 post-injections (dpi) for the analysis. Genetic material (DNA) of P. salmonis was detected in the liver tissue of fish stimulated with both live and inactivated P. salmonis at 14 dpi. Additionally, the hematocrit percentage decreased at 3 and 7 dpi in fish stimulated with live P. salmonis, unchanged in fish challenged with inactivated P. salmonis. On the other hand, plasma iron content decreased during the experimental course in fish stimulated with both live and inactivated P. salmonis, although this decrease was statistically significant only at 3 dpi. Regarding the immune-nutritional markers such as tfr1, dmt1, and ireg1 were modulated in the two experimental conditions, compared to zip8, ft-h, and hamp, which were down-regulated in fish stimulated with live and inactivated P. salmonis during the course experimental. Finally, the intracellular iron content in the liver increased at 7 and 14 dpi in fish stimulated with live and inactivated P. salmonis, while the zinc content decreased at 14 dpi under both experimental conditions. However, stimulation with live and inactivated P. salmonis did not alter the manganese content in the fish. The results suggest that nutritional immunity does not distinguish between live and inactivated P. salmonis and elicits a similar immune response. Probably, this immune mechanism would be self-activated with the detection of PAMPs, instead of a sequestration and/or competition of micronutrients by the living microorganism.
Collapse
Affiliation(s)
- Danixa Martínez
- Laboratorio Institucional de Investigación, Facultad de Ciencias de la Naturaleza, Universidad San Sebastián, Puerto Montt, Chile
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- *Correspondence: Danixa Martínez, ; Luis Vargas-Chacoff, ; Alex Romero,
| | - Ricardo Oyarzún-Salazar
- Laboratorio Institucional de Investigación, Facultad de Ciencias de la Naturaleza, Universidad San Sebastián, Puerto Montt, Chile
| | - Ana María Quilapi
- Escuela de Tecnología Médica, Facultad de la Salud, Universidad Santo Tomás, Osorno, Chile
| | - José Coronado
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Ricardo Enriquez
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Carolina Vargas-Lagos
- Escuela de Tecnología Médica, Facultad de la Salud, Universidad Santo Tomás, Osorno, Chile
| | - Cristian Oliver
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Natacha Santibañez
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Marcos Godoy
- Laboratorio Institucional de Investigación, Facultad de Ciencias de la Naturaleza, Universidad San Sebastián, Puerto Montt, Chile
- Centro de Investigaciones Biológicas Aplicadas (CIBA), Puerto Montt, Chile
| | - José Luis Muñoz
- Centro de Investigación y Desarrollo i~mar, Universidad de los Lagos, Puerto Montt, Chile
| | - Luis Vargas-Chacoff
- Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
- Centro Fondap de Investigación de Altas Latitudes (IDEAL), Universidad Austral de Chile, Valdivia, Chile
- Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems, Biodiversity of Antarctic and Subantarctic Ecosystems (BASE), University Austral of Chile, Valdivia, Chile
- *Correspondence: Danixa Martínez, ; Luis Vargas-Chacoff, ; Alex Romero,
| | - Alex Romero
- Laboratorio de Inmunología y Estrés de Organismos Acuáticos, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
- Centro Fondap Interdisciplinary Center for Aquaculture Research (INCAR), Universidad de Concepción, Concepción, Chile
- *Correspondence: Danixa Martínez, ; Luis Vargas-Chacoff, ; Alex Romero,
| |
Collapse
|
3
|
Mani A, Salinas I. The knowns and many unknowns of CNS immunity in teleost fish. FISH & SHELLFISH IMMUNOLOGY 2022; 131:431-440. [PMID: 36241002 DOI: 10.1016/j.fsi.2022.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 06/16/2023]
Abstract
Many disease agents infect the central nervous system (CNS) of teleost fish causing severe losses for the fish farming sector. Yet, neurotropic fish pathogens remain poorly documented and immune responses in the teleost CNS essentially unknown. Previously thought to be devoid of an immune system, the mammalian CNS is now recognized to be protected from infection by diverse immune cells that mostly reside in the meningeal lymphatic system. Here we review the current body of work pertaining immune responses in the teleost CNS to infection. We identify important knowledge gaps with regards to CNS immunity in fish and make recommendations for rigorous experimentation and reporting in manuscripts so that fish immunologists can advance this burgeoning field.
Collapse
Affiliation(s)
- Amir Mani
- Center for Evolutionary and Theoretical Immunology, Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA
| | - Irene Salinas
- Center for Evolutionary and Theoretical Immunology, Department of Biology, University of New Mexico, Albuquerque, NM 87131, USA.
| |
Collapse
|