| Core temperature is regulated, although at a lower temperature, in rats exposed to hypergravic fields. | |
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MedLine Citation:
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PMID: 11539081 Owner: NASA Status: MEDLINE |
Abstract/OtherAbstract:
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1. In rats acclimated to 23 degrees C (RT rats) or 5 degrees C (CA rats), core temperature (Tc), tail temperature (Tt) and oxygen consumption (VO2) were measured during exposure to a hypergravic field. 2. Rats were exposed for 5.5 h to a 3 g field while ambient temperature (Ta) was varied. For the first 2 h, Ta was 25 degrees C; then Ta was raised to 34 degrees C for 1.5 h. During this period of warm exposure, Tc increased 4 degrees C in both RT and CA rats. Finally, Ta was returned to 25 degrees C for 2 h, and Tc decreased toward the levels measured prior to warm exposure. 3. In a second experiment at 3 g, RT and CA rats were exposed to cold (12 degrees C) after two hours at 25 degrees C. During the one hour cold exposure, Tc fell 1.5 degrees C in RT and 0.5 degree C in CA rats. After cold exposure, when ambient temperature was again 25 degrees C, Tc of RT and CA rats returned toward the levels measured prior to the thermal disturbance. 4. Rats appear to regulate their temperature, albeit at a lower level, in a 3 g field. |
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Authors:
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C B Monson; J M Horowitz; B A Horwitz |
Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of thermal biology Volume: 13 ISSN: 0306-4565 ISO Abbreviation: J. Therm. Biol. Publication Date: 1988 |
Date Detail:
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Created Date: 1996-12-16 Completed Date: 1996-12-16 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 7600115 Medline TA: J Therm Biol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 93-101 Citation Subset: S |
Affiliation:
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Department of Animal Physiology, University of California, Davis 95616, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acclimatization
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physiology Animals Body Temperature / physiology* Body Temperature Regulation / physiology* Centrifugation Cold Temperature Gravitation Hypergravity* Hypothermia, Induced Male Oxygen Consumption / physiology* Rats Rats, Inbred Strains Tail Temperature |
| Investigator | |
Investigator/Affiliation:
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J M Horowitz / U CA, Davis |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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