title: Day:night variations of melatonin, 5-hydroxyindole acetic acid, serotonin, serotonin N-acetyltransferase, tryptophan, norepinephrine and dopamine in the rabbit pineal gland.
abstract: Pineal tryptophan, serotonin, serotonin-N-acetyltransferase (NAT), melatonin, 5-hydroxyindole acetic acid (5HIAA), norepinephrine and dopamine were measured in 5 castrated rabbits each at 11.00, 00.30 and 03.00 hours. The rabbits were housed in an L:D 14:10 (lights on 07.00 hours). Significant day:night variations were found in NAT, melatonin, dopamine and norepinephrine. These results were compared to data concerning rhythms of pineal constituents in other species.
mesh_terms: D000123:Acetyltransferases / Q000378:metabolism*; D000818:Animals; D001191:Arylamine N-Acetyltransferase / Q000378:metabolism*; D002940:Circadian Rhythm; D004298:Dopamine / Q000378:metabolism*; D005260:Female; D006897:Hydroxyindoleacetic Acid / Q000378:metabolism*; D008297:Male; D008550:Melatonin / Q000378:metabolism*; D009638:Norepinephrine / Q000378:metabolism*; D010870:Pineal Gland / Q000378:metabolism*; D011817:Rabbits; D012701:Serotonin / Q000378:metabolism*; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D012701:Serotonin; D006897:Hydroxyindoleacetic Acid; D014364:Tryptophan; D000123:Acetyltransferases; D001191:Arylamine N-Acetyltransferase; D008550:Melatonin; D004298:Dopamine; D009638:Norepinephrine