| Short photoperiod enhances thermogenic capacity in Brandt's voles. | |
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MedLine Citation:
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PMID: 15924911 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Environmental cues play important roles in the regulation of an animal's physiology and behavior. In the present study, we examined the effects of short photoperiod (SD) on body weight as well as on several physiological, hormonal, and biochemical measures indicative of thermogenic capacity to test our hypothesis that short photoperiod stimulates increases in thermogenesis without cold stress in Brandt's voles. SD voles showed increases in basal metabolic rate (BMR) and nonshivering thermogenesis (NST) during the 4-week photoperiod acclimation. At the end, these voles (SD) had lower body weights, higher levels of cytochrome C oxidase (COX) activity and mitochondrial uncoupling protein-1 (UCP1) contents in brown adipose tissues (BAT), and higher concentrations of serum tri-iodothyronine (T3) and thyroxine (T4) compared to LD voles. No differences were found between male and female voles in any of the above-mentioned measurements. Together, these data indicate that SD experience enhances thermogenic capacity similarly in males and females of Brandt's voles. |
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Authors:
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Zhi-Jun Zhao; De-Hua Wang |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Physiology & behavior Volume: 85 ISSN: 0031-9384 ISO Abbreviation: Physiol. Behav. Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-05-31 Completed Date: 2005-10-04 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0151504 Medline TA: Physiol Behav Country: United States |
Other Details:
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Languages: eng Pagination: 143-9 Citation Subset: IM |
Affiliation:
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State Key Laboratory of Integrated Management for Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 25 Beisihuan Xilu, Zhongguancun, Haidian, Beijing 100080, China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acclimatization Adipose Tissue / metabolism Animals Arvicolinae Basal Metabolism / physiology, radiation effects Blotting, Western / methods Body Temperature Regulation / physiology*, radiation effects Body Weight / physiology, radiation effects Carrier Proteins / metabolism Electron Transport Complex IV / metabolism Female Ion Channels Male Membrane Proteins / metabolism Mitochondria / metabolism, radiation effects Mitochondrial Proteins Photoperiod* Thermogenesis / physiology*, radiation effects Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Carrier Proteins; 0/Ion Channels; 0/Membrane Proteins; 0/Mitochondrial Proteins; 0/mitochondrial uncoupling protein; EC 1.9.3.1/Electron Transport Complex IV |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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