• 作者： 彭明聰; 江慧玲; 王秀真
• 作者服務機構： 國立臺灣大學醫學院生理學科
• 中文摘要： 在12小時照光，12小時黑暗情況下連續記錄23至34個月卵巢切除雌鼠之攝食及飲水行為並與4個月卵巢切除年輕雌鼠比較，年老雌鼠一日攝食次數較年輕雌鼠增加，但飲水次數並無增加。年老雌鼠攝食次數之日夜間律動7隻中2隻消失，飲水次數之日夜間律動8隻中1隻消失。其他年老雌鼠尚有日夜間律動者一日餐次減少，餐間間隔延長，一餐中攝食頻率增加，一日中連續的飲水行為的次數增加，其時間縮短，問隔延長，頻率增加。飲水次數、攝食次數比率年老鼠及年輕鼠均在黑暗期比在照光期大。以上變化與年老雄鼠及下視丘腹內核破壞鼠類似，但其變化程度較年老雄鼠少。
• 英文摘要： Circadian rhythms and patterns of feeding and drinking behavior of ovariectomized old female rats(23 to 34 months of age) were studied and the changes due to the aging process were analyzed. In order toassess sex difference in these patterns in old age, the data were also compared with the previous studies inold male rats. There was significant increase in daily feeding events but not in licking events in old femalerats. Circadian rhythms disappeared in 2 out of 7 old female rats in feeding events and 1 out of 8 old fe-male rats in licking events. The remaining old rats which still showed circadian rhythmicity in feedingevents and licking events, had smaller meal number/day, larger mean intermeal interval, quicker feedingevents/min/meal, larger draft number/day, shorter mean draft duration, longer mean interdraft interval andquicker licking events/min/draft than young female rats. Drinking/feeding ratio was higher in the darkperiod than the light period in young as well as old female rats. These changes resemble those in old malerats and in ventromedial hypothalamic lesioned rats in the obese stage, but to less extent.
• 中文關鍵字： circadian rhythm; draft; drinking behavior; feeding behavior; meal; old ovariectomized rats; power spectrum
• 英文關鍵字： --