| Heat acclimation: cardiovascular response to hot/dry and hot/wet heat loads in rats. | |
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MedLine Citation:
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PMID: 9080311 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Body temperature, blood pressure (BP) and heart rate (HR) of rats before and after acclimation to heat were studied in chronically cannulated sedentary conscious rats in different hot environmental conditions [hot/dry: 40 degrees C, 20% relative humidity (RH) and hot/wet: 35 degrees C, 70% RH]. During exposure to heat stress, acclimated rats showed an attenuated increase in colonic temperature (Tc) compared to non-acclimated rats. Concomitantly, an abrupt decrease in HR, delayed and attenuated elevation in mean arterial BP and improved cardiac efficiency were recorded. Differences were observed upon exposure to the hot/wet and hot/dry climates: the hot/dry climate imposed a greater physiological burden than the hot/wet climate. The data suggest that for sedentary rats dry heat produces a greater load than humid heat. Thus, the conventional heat load indices do not apply universally but have a thermoregulatory pattern specificity. |
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Authors:
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D Moran; Y Shapiro; U Meiri; A Laor; M Horowitz |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of basic and clinical physiology and pharmacology Volume: 7 ISSN: 0792-6855 ISO Abbreviation: J Basic Clin Physiol Pharmacol Publication Date: 1996 |
Date Detail:
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Created Date: 1997-06-04 Completed Date: 1997-06-04 Revised Date: 2008-11-21 |
Medline Journal Info:
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Nlm Unique ID: 9101750 Medline TA: J Basic Clin Physiol Pharmacol Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 375-87 Citation Subset: IM; S |
Affiliation:
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Heller Institute of Medical Research, Sheba Medical Center, Tel-Hashomer, Israel. |
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 Blood Pressure / physiology Heart Rate / physiology Hemodynamics / drug effects Hot Temperature* Humidity* Male Rats Stress, Physiological / physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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