FURTHER OBSERVATIONS ON THE ADRENAL SECRETORY RHYTHM OF THE BROWN LEMMING

ABSTRACT Isolated lemming adrenals display daily rhythms which persist for at least five days when the glands are maintained in organ culture. Rhythmic corticosteroid secretion in vitro shows a »free running« period of less than 24 hours (23.4 ± 0.2 hours). When the intervals of animal sacrifice in...

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Bibliographic Details
Published in:Acta Endocrinologica
Main Authors: Andrews, Richard V., Keil, Lanny C., Keil, Nancy Nolder
Format: Article in Journal/Newspaper
Language:unknown
Published: Bioscientifica 1968
Subjects:
Endocrinology
General Medicine
Endocrinology, Diabetes and Metabolism
Arctic
Online Access:http://dx.doi.org/10.1530/acta.0.0590036
https://eje.bioscientifica.com/view/journals/eje/59/1/acta_59_1_004.xml
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Summary:ABSTRACT Isolated lemming adrenals display daily rhythms which persist for at least five days when the glands are maintained in organ culture. Rhythmic corticosteroid secretion in vitro shows a »free running« period of less than 24 hours (23.4 ± 0.2 hours). When the intervals of animal sacrifice in culture experiments overlap, initial peaks displayed by glands from the freshly killed donor animals are in phase with peaks of five-day cultures; these data are interpreted as evidence for »free running« periodicity in adrenal function of lemmings exposed to the arctic day.

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