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Renal electrolyte circadian rhythms - Independence from feeding and activity patternsExperiments were conducted on six unanesthetized chair-acclimatized adult male squirrel monkeys (Saimiri sciureus) weighing 600-900 g to determine whether internal synchronization is the result of simple passive dependence of renal excretory rhythms on endogenous rhythms of those variable that influence electrolyte excretion such as dietary intake and muscular activity. Independence of the urinary rhythms from diurnal variations in feeding, drinking, and activity was secured by depriving the animals of food, water, and training them to perform a two-hourly schedule of feeding, drinking, and activity throughout day and night. Results indicate that the internal synchronization which is normally observed between the behavioral and urinary rhythms cannot be explained by any direct dependence of renal function on behavioral patterns. The most probable mechanism for circadian internal synchronization is that the various behavioral and renal rhythms are controlled by potentially independent separate oscillators which are normally kept in synchrony with one another.
Document ID
19770043730
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Moore-Ede, M. C.
(Harvard Univ. Boston, MA, United States)
Herd, J. A.
(Harvard University Boston and Southboro, Mass., United States)
Date Acquired
August 8, 2013
Publication Date
February 1, 1977
Publication Information
Publication: American Journal of Physiology
Volume: 232
Subject Category
Life Sciences (General)
Accession Number
77A26582
Funding Number(s)
CONTRACT_GRANT: NAS9-14249
CONTRACT_GRANT: NIH-HL-14150
CONTRACT_GRANT: NIH-HL-13872
Distribution Limits
Public
Copyright
Other

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