title: Involvement of thalamic paraventricular nucleus in the anticipatory reaction under food restriction in the rat.
abstract: To investigate which brain regions are involved in the anticipatory activity in rats restricted feeding for 2 hr, we examined c-Fos expression before and after feeding. Only the thalamic paraventricular nucleus (tPVN) showed c-Fos expression before feeding than after feeding. After the anticipatory locomotor activity rhythm was established, lesioning the tPVN attenuated this rhythm, but not the light-dark entrained rhythm. The anticipatory increase of blood corticosterone levels was not established in long-term tPVN-lesioned rats. These results suggest that the tPVN is involved in the expression of anticipatory reactions under a food-restricted regimen.
authors.affiliation: Department of Veterinary Physiology, Faculty of Agriculture, University of Miyazaki, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Nakahara
authors.forename: Kento
authors.initials: K
authors.lastname: Fukui
authors.forename: Noboru
authors.initials: N
authors.lastname: Murakami
mesh_terms: D000818:Animals; D002940:Circadian Rhythm / Q000502:physiology*; D003345:Corticosterone / Q000097:blood; D005247:Feeding Behavior / Q000502:physiology*; D005508:Food Deprivation / Q000502:physiology*; D008124:Locomotion / Q000502:physiology; D020644:Midline Thalamic Nuclei / Q000378:metabolism / Q000502:physiology*; D016760:Proto-Oncogene Proteins c-fos / Q000378:metabolism*; D051381:Rats; D017208:Rats, Wistar
chemical_list: D016760:Proto-Oncogene Proteins c-fos; D003345:Corticosterone