Document Detail

Cold-induced salt intake in mice and catecholamine, renin and thermogenesis mechanisms.
MedLine Citation:
PMID:  8800478     Owner:  NLM     Status:  MEDLINE    
Cold induces increased intake of salt in mice. To examine involvement of renin and catecholamines, male ICR mice were exposed to cold (7-9 degrees C; 6 h/day; 4 days), and half of them were allowed to choose between water and 0.9% NaCl. Plasma renin activity (PRA) and catecholamine concentrations in plasma, adrenal gland, kidney, brown adipose tissue (BAT) and brain were examined in three phases: for 9 h before exposure to cold, during 6 h of cold exposure and for 9 h after the exposure. The amount of salt intake from NaCl solution and from food, PRA and noradrenaline (NE) concentrations in kidney and medulla oblongata were higher during cold and the 9 h after exposure to cold than during the 9 h before the exposure. These results are consistent with the suggestion that cold induced catecholamine metabolism enhanced activity in the renin-angiotensin system, which played an important role in the arousal of salt appetite. During cold exposure, concentrations of NE and dopamine in BAT were higher in mice with access to NaCl solution than those without NaCl to drink. These results suggest that cold-induced salt intake enhanced non-shivering thermogenesis, and are consistent with our previous report that high salt intake helped to maintain colonic temperature under cold exposure.
Y Dejima; S Fukuda; Y Ichijoh; K Takasaka; R Ohtsuka
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Appetite     Volume:  26     ISSN:  0195-6663     ISO Abbreviation:  Appetite     Publication Date:  1996 Jun 
Date Detail:
Created Date:  1996-11-21     Completed Date:  1996-11-21     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8006808     Medline TA:  Appetite     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  203-19     Citation Subset:  IM    
Department of Human Ecology, Faculty of Health Sciences, Kyorin University, Tokyo, Japan.
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MeSH Terms
Adipose Tissue, Brown / metabolism
Adrenal Glands / metabolism
Body Temperature Regulation / physiology*
Catecholamines / blood,  metabolism*
Cold Temperature*
Dopamine / blood,  metabolism
Epinephrine / blood,  metabolism
Hypothalamus / metabolism
Kidney / metabolism
Medulla Oblongata / metabolism
Mice, Inbred ICR
Norepinephrine / blood,  metabolism
Renin / blood*
Sodium Chloride, Dietary / administration & dosage*
Sodium, Dietary / administration & dosage
Reg. No./Substance:
0/Catecholamines; 0/Sodium Chloride, Dietary; 0/Sodium, Dietary; 51-41-2/Norepinephrine; 51-43-4/Epinephrine; EC

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