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Sadoul B, Alfonso S, Bessa E, Bouchareb A, Blondeau-Bidet E, Clair P, Chatain B, Bégout ML, Geffroy B. Enhanced brain expression of genes related to cell proliferation and neural differentiation is associated with cortisol receptor expression in fishes. Gen Comp Endocrinol 2018; 267:76-81. [PMID: 29902473 DOI: 10.1016/j.ygcen.2018.06.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Revised: 06/07/2018] [Accepted: 06/10/2018] [Indexed: 02/03/2023]
Abstract
Stress enhances or inhibits neurogenesis in mammals and some fish species. The link between the two processes is still unclear. Most studies have been performed in very specific stressful or altered environments. Despite the known inter-individual divergence in coping abilities within populations, the relationship between the stress axis and neurogenesis has never been addressed in unstressed individuals. Here we correlate brain expression of the pcna (proliferating cell nuclear antigen) and neurod1 (neurogenic differentiation factor 1) genes, two markers of neurogenesis, with transcripts of cortisol receptors in three fish species living in very distinct environments. Within the three species, individuals with the highest expression of neurogenesis genes were also those that expressed the high levels of cortisol receptors. Based on these correlations and the hypothesis that mRNA levels are proxies of protein levels, we hypothesize that within unstressed animals, individuals sensitive to cortisol perceive a similar environment to be more stimulating, leading to increased neurogenesis. Although it is difficult to determine whether it is sensitivity to cortisol that affects neurogenesis capacities or the opposite, the proposed pathway is a potentially fruitful avenue that warrants further mechanistic experiments.
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Affiliation(s)
- B Sadoul
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France.
| | - S Alfonso
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France; Ifremer, Laboratoire Ressources Halieutiques de La Rochelle, Place Gaby Coll, L'Houmeau, France
| | - E Bessa
- Graduate Program in Ecology, University of Brasília, Distrito Federal, Brazil
| | - A Bouchareb
- Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom
| | - E Blondeau-Bidet
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| | - P Clair
- University of Montpellier, Montpellier GenomiX, Montpellier, France
| | - B Chatain
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France
| | - M L Bégout
- Ifremer, Laboratoire Ressources Halieutiques de La Rochelle, Place Gaby Coll, L'Houmeau, France
| | - B Geffroy
- MARBEC, Univ Montpellier, CNRS, Ifremer, IRD, Palavas-Les-Flots, France.
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Rind K, Beyrend D, Blondeau-Bidet E, Charmantier G, Cucchi P, Lignot JH. Effects of different salinities on the osmoregulatory capacity of Mediterranean sticklebacks living in freshwater. J Zool (1987) 2017. [DOI: 10.1111/jzo.12491] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- K. Rind
- Shaheed Benazir Bhutto University; Shaheed benazirabad Pakistan
| | - D. Beyrend
- MARBEC; MARine Biodiversity, Exploitation and Conservation; University of Montpellier; Montpellier France
| | - E. Blondeau-Bidet
- MARBEC; MARine Biodiversity, Exploitation and Conservation; University of Montpellier; Montpellier France
| | - G. Charmantier
- MARBEC; MARine Biodiversity, Exploitation and Conservation; University of Montpellier; Montpellier France
| | - P. Cucchi
- MARBEC; MARine Biodiversity, Exploitation and Conservation; University of Montpellier; Montpellier France
| | - J.-H. Lignot
- MARBEC; MARine Biodiversity, Exploitation and Conservation; University of Montpellier; Montpellier France
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Lorin-Nebel C, Budzinski H, Le Ménach K, Devier M, Charmantier G, Gros R, Grousset E, Blondeau-Bidet E, Farcy E. 4-Nonylphenol disrupts osmoregulation in the European sea-bass Dicentrarchus labrax. J Xenobiot 2014. [DOI: 10.4081/xeno.2014.4905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Not available
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