Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/90637
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | 24-Hour changes in circulating prolactin, follicle-stimulating hormone, luteinizing hormone, and testosterone in young male rats subjected to calorie restriction |
Autor: | Chacón, F.; Cano Barquilla, Pilar; Jiménez, V.; Cardinal, D. P.; Marcos, Ascensión CSIC ORCID; Esquifino, Ana I. | Fecha de publicación: | 2004 | Editor: | Marcel Dekker | Citación: | Chronobiology International 21: 393- 404 (2004) | Resumen: | This work analyzes the effect of calorie restriction on the 24 h variation of pituitary-testicular function in young male Wistar rats by measuring the circulating levels of prolactin, follicle-stimulating hormone (FSH), luteinizing hormone (LH), and testosterone. Control animals were provided an equilibrium calorie diet and the experimental animals a calorie-restriction diet equivalent to 66% of food restriction for four weeks starting on day 35 of life. Different groups of control and experimental rats were killed at 6 h intervals around the clock, beginning 1 h after light on (HALO). Compared to the control animals, the mean secretion of prolactin was augmented and that of LH and testosterone decreased in calorie-restricted rats, whereas FSH release remained unchanged. Significant changes in the 24 h secretory pattern of circulating prolactin, LH, and testosterone occurred in the calorie-restricted rats. These include the appearance of a second maximum of plasma prolactin at 21 HALO, blunting of the LH peak seen at 13 HALO, and phase-shift of the testosterone peak from 13 HALO in controls to 17 HALO in calorie-restricted rats. The significant positive correlation between individual LH and testosterone levels found in controls was no longer observed in calorie-restricted rats. Availability of nutrients presumably affects the mechanisms that modulate the circadian variation of the pituitary-gonadal axis in growing male rats. | URI: | http://hdl.handle.net/10261/90637 | DOI: | 10.1081/CBI-120038607 | Identificadores: | doi: 10.1081/CBI-120038607 issn: 0742-0528 |
Aparece en las colecciones: | (IF) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
23
checked on 08-mar-2024
WEB OF SCIENCETM
Citations
21
checked on 26-feb-2024
Page view(s)
295
checked on 17-mar-2024
Download(s)
121
checked on 17-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.