FN Archimer Export Format PT J TI Enhanced brain expression of genes related to cell proliferation and neural differentiation is associated with cortisol receptor expression in fishes BT AF SADOUL, Bastien ALFONSO, Sebastien BESSA, E. BOUCHAREB, A. BLONDEAU-BIDET, E. CLAIR, P. CHATAIN, Beatrice BEGOUT, Marie-Laure GEFFROY, Benjamin AS 1:1;2:1,2;3:3;4:4;5:6;6:5;7:1;8:2;9:1; FF 1:;2:PDG-RBE-MARBEC-LAAAS;3:;4:;5:;6:;7:PDG-RBE-MARBEC-LAAAS;8:PDG-RBE-HGS;9:PDG-RBE-MARBEC-LAAAS; C1 Univ Montpellier, MARBEC, Ifremer, CNRS,IRD, Palavas Les Flots, France. Ifremer, Lab Ressources Halieut La Rochelle, Pl Gaby Coll, Lhoumeau, France. Univ Brasilia, Grad Program Ecol, Brasilia, DF, Brazil. Univ Oxford, Wellcome Trust Ctr Human Genet, Oxford, England. Univ Montpellier, Montpellier GenomiX, Montpellier, France. C2 IFREMER, FRANCE IFREMER, FRANCE UNIV BRASILIA, BRAZIL UNIV OXFORD, UK UNIV MONTPELLIER, FRANCE CNRS, FRANCE SI PALAVAS LA ROCHELLE SE PDG-RBE-MARBEC-LAAAS PDG-RBE-HGS UM MARBEC IN WOS Ifremer jusqu'en 2018 copubli-france copubli-europe copubli-univ-france copubli-int-hors-europe copubli-sud IF 2.445 TC 21 UR https://archimer.ifremer.fr/doc/00444/55560/57164.pdf LA English DT Article DE ;Neurogenesis;Stress;Glucocorticoid receptor;Mineralocorticoid receptor;Hypothalamo-pituitary-interrenal axis AB 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. PY 2018 PD OCT SO General And Comparative Endocrinology SN 0016-6480 PU Academic Press Inc Elsevier Science VL 267 UT 000444366400010 BP 76 EP 81 DI 10.1016/j.ygcen.2018.06.001 ID 55560 ER EF