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Circadian Rhythm of Serotonin <i>N</i> -Acetyltransferase Activity in Organ Culture of Chicken Pineal Gland

SciencePublished 23 March 1979
Takeo Deguchi
Citations194
SJR quartileQ1
SJR score10.42
SNIP6.62

TL;DR

When chicken pineal glands were organ-cultured in darkness, serotonin N-acetyltransferase activity was low during daytime, increased at midnight, and decreased on the next morning, compared with when the glands were cultured under a light-dark cycle.

Abstract

When chicken pineal glands were organ-cultured in darkness, serotonin N-acetyltransferase activity was low during daytime, increased at midnight, and decreased on the next morning. The autonomous increase of N-acetyltransferase activity was suppressed by illumination of the glands. When pineal glands were cultured under a light-dark cycle (LD 12:12), the change of N-acetyltransferase activity continued to oscillate in phase with the light-dark cycle for 3 days.

Keywords

Agricultural and Biological SciencesNeuroscience