Involvement of thalamic paraventricular nucleus in the anticipatory reaction under food restriction in the rat
スポンサーリンク
概要
- 論文の詳細を見る
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.給餌時間を毎日定刻の2時間のみに制限すると,ラットは餌の来る時刻を予知し,予知行動を示すようになる.給餌時刻前後の脳内cFosの発現部位を調べた結果,視床室傍核に発現の差を認めた.そこで,この部位を電気破壊すると,予知行動のみ消失した.また,視床室傍核を破壊したラットでは,血中コルチコステロンの制限給餌直前のピークが形成されなかった.以上の結果は,視床室傍核が制限給餌で発動する予知行動に関与していることを示唆する.
- Japanese Society of Veterinary Scienceの論文
著者
-
NAKAHARA Keiko
Department of Animal Physiology, Faculty of Agriculture, University of Miyazaki
-
MURAKAMI Noboru
Department of Animal Physiology, Faculty of Agriculture, University of Miyazaki
-
NAKAHARA Keiko
Department of Veterinary Physiology, Faculty of Agriculture, University of Miyazaki
-
Fukui Kento
Department of Veterinary Physiology, Faculty of Agriculture, University of Miyazaki
関連論文
- The First Isolation of Nocardia veterana from a Human Mycetoma
- Involvement of Distinct Signaling Pathways in ActivinInduced Increases in FSH Secretion and Enlargement of FSH Cell Population in the Rat Pituitary
- Melatonin accelerates reentrainment of circadian locomotor activity rhythms to new light-dark cycles in the rat
- Variation in Fecal Testosterone Hormone Concentration with Season and Harem Size in Misaki Feral Horses
- Does Melatonin Really Suppress the Testosterone Release in Rat Leydig Cell In Vitro?
- Relationship between growth and plasma concentrations of ghrelin and growth hormone in juvenile beagle dogs
- Immunization against Intestinal Bacterial Endotoxin Prevents Alcoholic Fatty Liver in Rats
- Involvement of thalamic paraventricular nucleus in the anticipatory reaction under food restriction in the rat
- Functional Localization of the Supplementary Motor Area