N
N. Le Belle
Researcher at Centre national de la recherche scientifique
Publications - 16
Citations - 757
N. Le Belle is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Gonadotropin & Growth factor. The author has an hindex of 13, co-authored 16 publications receiving 732 citations.
Papers
More filters
Journal ArticleDOI
Dopaminergic Inhibition of Reproduction in Teleost Fishes: Ecophysiological and Evolutionary Implications
Sylvie Dufour,Finn-Arne Weltzien,Marie-Emilie Sébert,N. Le Belle,B. Vidal,Philippe Vernier,Catherine Pasqualini +6 more
TL;DR: DA inhibitory control could represent an ancient evolutionary component in the neuroendocrine regulation of reproduction that may have been differentially maintained throughout vertebrate evolution.
Journal ArticleDOI
Stimulation of gonadotropin release and of ovarian development, by the administration of a gonadoliberin agonist and of dopamine antagonists, in female silver eel pretreated with estradiol.
TL;DR: The results suggest that a double neuroendocrine mechanism (a lack of GnRH production and a dopaminergic inhibition of Gn RH action) is involved in the prepubertal blockage of eel gonadotropic function before the reproductive migration.
Journal ArticleDOI
Insulin-like growth factor-I stimulates gonadotrophin production from eel pituitary cells: a possible metabolic signal for induction of puberty
Y.-S. Huang,Karine Rousseau,N. Le Belle,B. Vidal,E. Burzawa-Gerard,J. Marchelidon,Sylvie Dufour +6 more
TL;DR: Data obtained in a primitive teleost suggest that the role of IGF-I as a link between body growth and puberty may have been established early in the evolution of vertebrates.
Journal ArticleDOI
Androgens stimulate gonadotropin-II β-subunit in eel pituitary cells in vitro
TL;DR: Comparison with previous in vivo experiments suggests multiple sites of action of sex steroids on the brain-pituitary gonadotropic axis for the positive feedback on GtH-II synthesis in this juvenile fish.
Journal ArticleDOI
Evidence that corticotropin-releasing hormone acts as a growth hormone-releasing factor in a primitive teleost, the european eel (anguilla anguilla)
TL;DR: It is suggested that CRH may have played an important early role in vertebrates co‐ordinating the activation of various endocrine axes involved in metamorphosis, osmoregulation, stress and fasting as it is found in some human physio‐pathological situations such as stress, fasting and depression.