Abstract
Four days following an 8-h advance of the light-dark cycle, the circadian rhythms in the pineal N-acetyltransferase activity and melatonin content reappeared in 7-week-old rats, but were still abolished in 24-month-old animals.
MeSH terms
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Acetyltransferases / metabolism*
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Aging / physiology*
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Animals
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Arylamine N-Acetyltransferase / metabolism*
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Circadian Rhythm / physiology*
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Darkness
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Light
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Male
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Melatonin / metabolism*
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Periodicity
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Pineal Gland / metabolism*
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Rats
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Rats, Inbred Strains
Substances
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Acetyltransferases
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Arylamine N-Acetyltransferase
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Melatonin