Aging alters resynchronization of the circadian system in rats after a shift of the light-dark cycle

Experientia. 1990 Jan 15;46(1):75-7. doi: 10.1007/BF01955421.

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.

Publication types

  • Comparative Study

MeSH terms

  • Acetyltransferases / metabolism*
  • Aging / physiology*
  • Animals
  • Arylamine N-Acetyltransferase / metabolism*
  • Circadian Rhythm / physiology*
  • Darkness
  • Light
  • Male
  • Melatonin / metabolism*
  • Periodicity
  • Pineal Gland / metabolism*
  • Rats
  • Rats, Inbred Strains

Substances

  • Acetyltransferases
  • Arylamine N-Acetyltransferase
  • Melatonin