Circadian rhythm of corticosterone secretion in the neonatal rabbit

Simple item page
AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:34Z
Fecha de publicación2005-01-01
ResumenMaternal care in the rabbit is restricted to a single 3- to 5-min period of nursing each day. One to three hours prior to the arrival of the mother, pups exhibit anticipatory behavioral arousal and elevation of core body temperature. In rodents, the hypothalamic-pituitary-adrenal axis is quiescent and levels of the adrenal hormone, corticosterone (CORT), are stable and extremely low during the first days of life, which are known collectively as the stress-hyporesponsive period (SHRP). It has been proposed that the rabbit also has an SHRP. However, we decided to examine CORT changes associated with the daily nursing bout, since behavioral arousal, core body temperature, and CORT are elevated prior to the onset of feeding in many other species. We scheduled the nursing bout at 1000 h and analyzed CORT concentration using RIA in pups sampled at various intervals after suckling. CORT levels showed a circadian variation that peaked at the time of the daily nursing bout. After nursing, values steadily decreased to a nadir at 2200 h and then rose again in advance of the next scheduled nursing. The three-fold difference between the highest (1000 h) and the lowest (2200 h) CORT values suggests that either the SHPP does not exist in rabbit pups or else it has properties that differ from those described for rodents. Unlike rodents, rabbit pups show a circadian secretion of CORT synchronized to the scheduled nursing bout. (c) 2005 Elsevier B.V. All rights reserved.es_ES
Doihttps://doi.org/10.1016/j.devbrainres.2005.06.007es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5394
Idiomaenes_ES
EditorialELSEVIERes_ES
RelaciónDevelopmental Brain Researches_ES
URL relacionadohttps://doi.org/10.1016/j.devbrainres.2005.06.007es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteDevelopmental Brain Research
Palabra claveendocrine and autonomic regulationes_ES
Palabra clavehypothalamices_ES
Palabra clavepituitaryes_ES
Palabra claveadrenal regulationes_ES
Palabra clavecorticosteronees_ES
Palabra claveneonatal rabbites_ES
Palabra clavecircadian rhythmes_ES
Palabra clavenursinges_ES
Palabra clavebehavioral arousales_ES
Palabra clavestress-hyporesponsive periodes_ES
TítuloCircadian rhythm of corticosterone secretion in the neonatal rabbites_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorRovirosa, MJ
AutorLevine, S
AutorGordon, MK
AutorCaba, M
AutorRovirosa, MJes_ES
AutorLevine, Ses_ES
AutorGordon, MKes_ES
AutorCaba, Mes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número1-2es_ES
Rango de páginas92-96es_ES
URL relacionadahttps://doi.org/10.1016/j.devbrainres.2005.06.007
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen158es_ES

Files

Collections

Documentación Cientifica