COMPARISON OF PINEAL MELATONIN RHYTHMS IN YOUNG-ADULT AND OLD DJUNGARIAN HAMSTERS (PHODOPUS-SUNGORUS) UNDER LONG AND SHORT PHOTOPERIODS
COMPARISON OF PINEAL MELATONIN RHYTHMS IN YOUNG-ADULT AND OLD DJUNGARIAN HAMSTERS (PHODOPUS-SUNGORUS) UNDER LONG AND SHORT PHOTOPERIODS
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DOI：
10.1016/0304-3940(85)90437-9
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发表时间：
1985-01-01
影响因子：
2.5
通讯作者：
VANECEK, J
中科院分区：
文献类型：
--
作者：
HOFFMANN, K;ILLNEROVA, H;VANECEK, J
研究了3-6月龄和17-22月龄雌性Djungarian仓鼠在光照-黑暗（LD）时间表（LD 16：8和LD 8：16）下松果体褪黑激素节律的模式。在两种光周期下，年轻成年仓鼠的褪黑激素节律的幅度是老年仓鼠的2.5倍。从LD 16：8到LD 8：16的变化后两周，在两个年龄组中，夜间褪黑激素水平升高的时间延长了约3小时。这表明，老年Djungarian仓鼠，以及年轻的成年人，可能能够识别光周期的长度及其变化。
The pattern of the pineal melatonin rhythm was studied in 3–6- and 17–22-month-old female Djungarian hamsters under light-dark (LD) schedules, LD 16:8 and LD 8:16. Under both photoperiods, the amplitude of the melatonin rhythm was 2.5 times higher in young adult hamsters than in old ones. Two weeks after the change from LD 16:8 to LD 8:16, the period of elevated nocturnal melatonin levels lengthened by about 3 h in both age groups. It is suggested that old Djungarian hamsters, as well as young adults, might be able to recognize the length of a photoperiod and its change.