Document Detail


Only UCP1 can mediate adaptive nonshivering thermogenesis in the cold.
MedLine Citation:
PMID:  11511509     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Adaptive nonshivering thermogenesis may have profound effects on energy balance and is therefore therefore is a potential mechanism for counteracting the development of obesity. The molecular basis for adaptive nonshivering thermogenesis has remained a challenge that sparked acute interest with the identification of proteins (UCP2, UCP3, etc.) with high-sequence similarity to the original uncoupling protein-1 (UCP1), which is localized only in brown adipose tissue. Using UCP1-ablated mice, we examined whether any adaptive nonshivering thermogenesis could be recruited by acclimation to cold. Remarkably, by successive acclimation, the UCP1-ablated mice could be made to subsist for several weeks at 4C during which they had to constantly produce heat at four times their resting levels. Despite these extreme requirements for adaptive nonshivering thermogenesis, however, no substitution of shivering by any adaptive nonshivering thermogenic process occurred. Thus, although the existence of, for example, muscular mechanisms for adaptive nonshivering thermogenesis has recurrently been implied, we did not find any indication of such thermogenesis. Not even during prolonged and enhanced demand for extra heat production was any endogenous hormone or neurotransmitter able to recruit any UCP1-independent adaptive nonshivering thermogenic process in muscle or in any other organ, and no proteins other than UCP1-not even UCP2 or UCP3-therefore have the ability to mediate adaptive nonshivering thermogenesis in the cold.
Authors:
V Golozoubova; E Hohtola; A Matthias; A Jacobsson; B Cannon; J Nedergaard
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Publication Detail:
Type:  Journal Article     Date:  2001-07-09
Journal Detail:
Title:  FASEB journal : official publication of the Federation of American Societies for Experimental Biology     Volume:  15     ISSN:  0892-6638     ISO Abbreviation:  FASEB J.     Publication Date:  2001 Sep 
Date Detail:
Created Date:  2001-09-04     Completed Date:  2001-10-11     Revised Date:  2012-02-15    
Medline Journal Info:
Nlm Unique ID:  8804484     Medline TA:  FASEB J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2048-50     Citation Subset:  IM    
Affiliation:
The Wenner-Gren Institute, The Arrhenius Laboratories F3, Stockholm University, SE-106 91, Stockholm, Sweden.
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Animals
Body Temperature
Body Temperature Regulation / physiology*
Carrier Proteins / physiology*
Cold Temperature
Ion Channels
Membrane Proteins / physiology*
Mice
Mitochondrial Proteins
Shivering
Thermogenesis
Uncoupling Agents*
Chemical
Reg. No./Substance:
0/Carrier Proteins; 0/Ion Channels; 0/Membrane Proteins; 0/Mitochondrial Proteins; 0/Uncoupling Agents; 0/mitochondrial uncoupling protein

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