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Titolo:
Endogenous thermoregulatory rhythms of squirrel monkeys in thermoneutrality and cold
Autore:
Robinson, EL; Fuller, CA;
Indirizzi:
Univ Calif Davis, Sect Neurobiol Physiol & Behav, Davis, CA 95616 USA UnivCalif Davis Davis CA USA 95616 Physiol & Behav, Davis, CA 95616 USA
Titolo Testata:
AMERICAN JOURNAL OF PHYSIOLOGY-REGULATORY INTEGRATIVE AND COMPARATIVE PHYSIOLOGY
fascicolo: 5, volume: 45, anno: 1999,
pagine: R1397 - R1407
SICI:
0363-6119(199905)45:5<R1397:ETROSM>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
BODY-TEMPERATURE RHYTHMS; CIRCADIAN-RHYTHM; SAIMIRI-SCIUREUS; MACACA-NEMESTRINA; GOLDEN-HAMSTER; LESIONS; BRAIN; RATS;
Keywords:
body temperature; direct calorimetry; indirect calorimetry; metabolism; heat production; heat loss; nonhuman primates; conductance;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
48
Recensione:
Indirizzi per estratti:
Indirizzo: Fuller, CA Univ95616f Davis, Sect Neurobiol Physiol & Behav, 1 Shields Ave, Davis, CA Univ Calif Davis 1 Shields Ave Davis CA USA 95616 ve, Davis, CA
Citazione:
E.L. Robinson e C.A. Fuller, "Endogenous thermoregulatory rhythms of squirrel monkeys in thermoneutrality and cold", AM J P-REG, 45(5), 1999, pp. R1397-R1407

Abstract

Whole body heat production (HP) and heat loss (HL) were examined to determine if the free-running circadian rhythm in body temperature (T-b) results from coordinated changes in HP and HL rhythms in thermoneutrality (27 degrees C) as well as mild cold (17 degrees C). Squirrel monkey metabolism (n = 6) was monitored by both indirect and direct calorimetry, with telemetered measurement of T-b and activity. Feeding was also measured. Rhythms of HP, HL, and conductance were tightly coupled with the circadian T-b rhythm at both ambient temperatures (T-A). At 17 degrees C, increased HP compensated for higher HL at all phases of the T-b rhythm, resulting in only minor changes to T-b. Parallel compensatory changes of HP and HL were seen at all rhythm phases at both T-A. Similar time courses of T-b, HP, and HL in their respective rhythms and the relative stability of T-b during both active and rest periods suggest action of the circadian timing system on T-b set point.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/07/20 alle ore 20:37:32