Journal ArticleDOI
Circadian and circannual fluctuations of pineal indoleamines (serotonin and melatonin) in Testudo hermanni Gmelin (Reptilia, Chelonia). I. Under natural conditions of photoperiod and temperature.
Reads0
Chats0
TLDR
Tortoise pineal serotonin and melatonin levels show marked circadian and circannual rhythms in a natural environment and the physiological significance of these rhythms remains to be determined and needs further investigation.About:
This article is published in General and Comparative Endocrinology.The article was published on 1979-02-01. It has received 73 citations till now. The article focuses on the topics: Circadian rhythm & Melatonin.read more
Citations
More filters
Journal ArticleDOI
Cellular circadian clocks in the pineal.
TL;DR: This review focuses on the functional properties of the cellular circadian clocks of non-mammalian vertebrates and how functions the clock?
Journal ArticleDOI
The pineal and melatonin: Regulators of circadian function in lower vertebrates
TL;DR: The pineal acts as a photo and thermoendocrine transducer which functions to synchronize internal cycle with cycles in the environment and which suggests how these multiple circadian clocks are coupled to each other and to cycles of light and temperature in the external world.
Book
The reproductive biology of the Chelonia
TL;DR: The Chelonian Reproductive Traits Compared with Other Reptiles and Methods to Study Reproduction and Conclusions are presented.
Journal ArticleDOI
Immunohistochemical evidence for the presence of melatonin in the pineal gland, the retina and the Harderian gland.
TL;DR: The presence of melatonin is demonstrated in the pineal gland, the retina and the Harderian gland in some mammalian and non-mammalian vertebrates, using a specific fluorescence labelled antibody technique.
References
More filters
Journal ArticleDOI
The pineal gland: a neurochemical transducer.
TL;DR: In this article, Axelrod applied signal transduction theory to his research on the metabolic function of serotonin, even describing the pineal gland as a "neurochemical transducer."
Journal ArticleDOI
Indole Metabolism in the Pineal Gland: A Circadian Rhythm in N-Acetyltransferase
David C. Klein,Joan L. Weller +1 more
TL;DR: Experiments in vitro indicate that norepinephrine, not serotonin, regulates the activity of N-acetyl-transferase through a highly specific receptor.
Book ChapterDOI
Circadian System Phase — An Aspect of Temporal Morphology; Procedures and Illustrative Examples
TL;DR: Anatomists and histologists, among many other biologists, often find that a given variable studied by them undergoes changes with time; they are dealing with a so-called time function.
Journal ArticleDOI
Circadian rhythm in rat pineal serotonin and its modifications by estrous cycle and photoperiod.
TL;DR: A slightly precocious rise in morning serotonin level was induced by earlier onset of light, and modifications in pineal serotonin correlated with the phases of the estrous cycle are described.
Journal ArticleDOI
Determination of N-acetylserotonin and melatonin activities in the pineal gland, retina, harderian gland, brain and serum of rats and chickens.
TL;DR: An N-acetylserotonin/melatonin radioimmunoassay (NAS/Mel RIA) and a Mel RIA were developed to measure NAS and Mel contents in tissues of rats and chickens and Mel levels in chicken serum were determined using these RIAs.
Related Papers (5)
Temperature-compensated circadian clock in the pineal of Anolis
Michael Menaker,Sherry Wisner +1 more