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  • 1
    Publication Date: 2012-01-13
    Description: Exercise benefits a variety of organ systems in mammals, and some of the best-recognized effects of exercise on muscle are mediated by the transcriptional co-activator PPAR-gamma co-activator-1 alpha (PGC1-alpha). Here we show in mouse that PGC1-alpha expression in muscle stimulates an increase in expression of FNDC5, a membrane protein that is cleaved and secreted as a newly identified hormone, irisin. Irisin acts on white adipose cells in culture and in vivo to stimulate UCP1 expression and a broad program of brown-fat-like development. Irisin is induced with exercise in mice and humans, and mildly increased irisin levels in the blood cause an increase in energy expenditure in mice with no changes in movement or food intake. This results in improvements in obesity and glucose homeostasis. Irisin could be therapeutic for human metabolic disease and other disorders that are improved with exercise.〈br /〉〈br /〉〈a href="" target="_blank"〉〈img src="" border="0"〉〈/a〉   〈a href="" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bostrom, Pontus -- Wu, Jun -- Jedrychowski, Mark P -- Korde, Anisha -- Ye, Li -- Lo, James C -- Rasbach, Kyle A -- Bostrom, Elisabeth Almer -- Choi, Jang Hyun -- Long, Jonathan Z -- Kajimura, Shingo -- Zingaretti, Maria Cristina -- Vind, Birgitte F -- Tu, Hua -- Cinti, Saverio -- Hojlund, Kurt -- Gygi, Steven P -- Spiegelman, Bruce M -- DK31405/DK/NIDDK NIH HHS/ -- DK54477/DK/NIDDK NIH HHS/ -- K99 DK087853/DK/NIDDK NIH HHS/ -- R01 DK054477/DK/NIDDK NIH HHS/ -- R01 DK061562/DK/NIDDK NIH HHS/ -- R37 DK031405/DK/NIDDK NIH HHS/ -- England -- Nature. 2012 Jan 11;481(7382):463-8. doi: 10.1038/nature10777.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Dana-Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="" target="_blank"〉PubMed〈/a〉
    Keywords: Adipocytes/cytology/drug effects/metabolism ; Adipose Tissue, Brown/*cytology/drug effects/metabolism ; Adipose Tissue, White/*cytology/drug effects/metabolism ; Animals ; Cell Respiration/drug effects ; Cells, Cultured ; Culture Media, Conditioned/pharmacology ; Energy Metabolism/drug effects/genetics/physiology ; Exercise/physiology ; Gene Expression Regulation/drug effects/genetics ; Hormones/metabolism/secretion ; Humans ; Insulin Resistance/physiology ; Intracellular Signaling Peptides and Proteins/genetics/metabolism ; Ion Channels/metabolism ; Mice ; Mice, Inbred BALB C ; Mice, Transgenic ; Mitochondrial Proteins/metabolism ; Models, Animal ; Muscle Cells/metabolism ; Obesity/blood/chemically induced/prevention & control ; Physical Conditioning, Animal/physiology ; Plasma/chemistry ; Subcutaneous Fat/cytology/drug effects/metabolism ; *Thermogenesis/drug effects/genetics ; Trans-Activators/deficiency/genetics/*metabolism/secretion ; Transcription Factors
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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