Title

Daily rhythms of serotonin and N-acetyltransferase in chicks

Document Type

Article

Publication Date

1-1-1979

Abstract

1. In chickens, the pineal gland has a daily change in the synthesis of melatonin. 2. This daily change has been attributed to the daily change in N-acetyltransferase activity, the first of the two enzymes responsible for the conversion of serotonin to melatonin. 3. When serotonin was measured under the same condition as N-acetyltransferase activity, the serotonin showed a 7-fold daily change. 4. Peaks of serotonin were found in the light-time near dawn and dusk when the N-acetyltransferase level was low; nadir serotonin values were obtained in the dark-time when the N-acetyltransferase activity was high. 5. However, the serotonin daily change does not seem to be a simple consequence of N-acetyltransferase activity in the pineal gland. © 1979.

Publication Name

Comparative Biochemistry and Physiology. Part C, Comparative

Volume Number

63

First Page

305

Last Page

307

Issue Number

2

DOI

10.1016/0306-4492(79)90078-9

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