Nicotine increases thermogenesis in brown adipose tissue in rats.
This study has tested the hypothesis that nicotine might increase thermogenesis in rats by activating the sympathetic nervous system which supplies brown adipose tissue. Three hours after a single injection of nicotine, both the turnover of norepinephrine and the binding of the purine nucleotide, guanosine 5'-diphosphate (GDP) to mitochondria from brown adipose tissue were significantly increased. After 11 days of treatment with nicotine, the turnover of norepinephrine and the GDP binding to mitochondria from brown adipose tissue both remained elevated but weight gain was not different. These data are consistent with the hypothesis that nicotine may have part of its effect through changes in thermogenesis involving sympathetic nervous activation of peripheral thermogenic tissues such as brown adipose tissue.
Lupien
J R
JR
Department of Medicine, University of Southern California, School of Medicine, Los Angeles.
Bray
G A
GA
D002001:Adipose Tissue, Brown / Q000187:drug effects* / Q000378:metabolism; D000818:Animals; D001833:Body Temperature Regulation / Q000187:drug effects*; D001835:Body Weight / Q000187:drug effects; D004435:Eating / Q000187:drug effects; D006153:Guanosine Diphosphate / Q000378:metabolism; D007202:Indicators and Reagents; D008928:Mitochondria / Q000187:drug effects / Q000378:metabolism; D009538:Nicotine / Q000494:pharmacology*; D009638:Norepinephrine / Q000378:metabolism; D051381:Rats
D007202:Indicators and Reagents; D006153:Guanosine Diphosphate; D009538:Nicotine; D009638:Norepinephrine