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Effect of light at night on the pineal rhythm in N-acetyltransferase activity in the Syrian hamsterMesocricetus auratus

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Summary

Pineal N-acetyltransferase activity in the male Syrian hamster exhibited a daily rhythm; the maximal night-time value was 3.5-fold higher than the day-time value. When hamsters were exposed to light at night N-acetyltransferase declined within 30 min to 1/5 of its former activity. These results indicate that in the Syrian hamster the pineal melatonin rhythm may be regulated at least partly via changes in N-acetyltransferase activity.

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Authors and Affiliations

  1. Institute of Physiology, Czechoslovak Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czechoslovakia

    J. Vaněček & Helena Illnerová

Authors
  1. J. Vaněček
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  2. Helena Illnerová
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The authors are grateful to Mrs Marie Svobodová for her skillful technical assistance.

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Vaněček, J., Illnerová, H. Effect of light at night on the pineal rhythm in N-acetyltransferase activity in the Syrian hamsterMesocricetus auratus. Experientia 38, 513–514 (1982). https://doi.org/10.1007/BF01952669

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