Zobrazeno 1 - 10
of 69
pro vyhledávání: '"J.P. Ravault"'
Publikováno v:
Revue d’Elevage et de Médecine Vétérinaire des Pays Tropicaux, Vol 50, Iss 3 (1997)
La mélatonine, une hormone secrétée par la glande pinéale, a été dosée sur trois chamelles vivant dans le Sud de la France. Comme pour les autres espèces domestiques, les résultats montrent qu'il existe un rythme nycthéméral de la sécrét
Externí odkaz:
https://doaj.org/article/41ec377365064c50b233692f9e99a81f
Autor:
Didier Chesneau, Anne Jouvet, Christine Brisson, Karen Privat, Michelle Fèvre-Montange, J.P. Ravault
Publikováno v:
Cellular and Molecular Neurobiology. 22:417-429
1. Tryptophan hydroxylase (TPOH) is the first enzyme in the melatonin synthesis pathway and the rate-limiting enzyme in serotonin synthesis. We established in this study an in vitro model of ovine pinealocytes to investigate the role of TPOH in melat
Publikováno v:
General and Comparative Endocrinology. 88:328-333
A gene for sex-linked imperfect albinism in the chicken ( s al ) has been associated with increased egg production with an implication that environmental light may play a role. In this study, levels of melatonin and hydroxyindole O -methyltransferase
Autor:
J.P. Ravault, J. A Delgadillo, Y. Guérin, Benoît Malpaux, J. Pelletier, J. Thimonier, Philippe Chemineau
Publikováno v:
Animal Reproduction Science
Animal Reproduction Science, Elsevier Masson, 1992, 30, pp.157-184
Animal Reproduction Science, Elsevier Masson, 1992, 30, pp.157-184
Breeds of sheep and goats from temperate latitudes exhibit seasonal variations of breeding activity which are controlled by annual photoperiodic changes. Short days (SD) stimulate sexual activity, but prolonged exposure results in refractoriness to s
Publikováno v:
Advances in Experimental Medicine and Biology ISBN: 9780306461347
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a94ce16d8f5ac59e214c5d9924883a1
https://doi.org/10.1007/0-306-46814-x_15
https://doi.org/10.1007/0-306-46814-x_15
Publikováno v:
Journal of Pineal Research
Journal of Pineal Research, Wiley, 1999, 26, pp.193-203
Journal of Pineal Research, Wiley, 1999, 26, pp.193-203
In mammals, the photoperiodic information, received by the retina, is transmitted to the pineal gland. In both organs, melatonin is produced and functions as a neurohormone giving temporal information to the organism. A four-step enzymatic pathway, i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9eb6de9cd39fe421645afe8ece71f547
https://hal.inrae.fr/hal-02690216
https://hal.inrae.fr/hal-02690216
Publikováno v:
European journal of pharmacology. 337(2-3)
The pineal organ of vertebrates produces melatonin and adenosine. In lower vertebrates, adenosine modulates melatonin production. We report herein that 2-chloro-cyclopentyl-[ 3 H ]-adenosine ([ 3 H ]CCPA: adenosine A1 receptor agonist) and [ 3 H ]-cy
Publikováno v:
Domestic Animal Endocrinology
Domestic Animal Endocrinology, Elsevier, 1990, 7 (3), pp.315-322
Domestic Animal Endocrinology, Elsevier, 1990, 7 (3), pp.315-322
Five adult pasture-bred French Friesian cows were used to qualify the circadian profile and characterized pulsatility of plasma melatonin, and to estimate melatonin secretion rate, around the summer solstice. Plasma concentrations of melatonin were l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::709e36fc3facbe5c9aa77094dc356e9b
https://hal.inrae.fr/hal-02710661
https://hal.inrae.fr/hal-02710661
Publikováno v:
Animal Reproduction Science. 14:205-218
Concentrations of luteinizing hormone (LH), follicle stimulating hormone (FSH) and prolactin (PRL) were measured in jugular blood and those of oestradiol-17β (E 2 17β) in utero-ovarian blood. Samples were taken from five intact gilts every 15 min f
Publikováno v:
General and Comparative Endocrinology. 52:247-254
Resume Les concentrations plasmatiques de prolactine, LH, FSH, et testosterone ont ete determinees a partir de dosages radioimmunologiques au cours de la premiere annee de vie chez le Chevreuil. Une etude histologique a egalement permis de controler