title: Acute exercise induces FGF21 expression in mice and in healthy humans.
abstract: Fibroblast growth factor 21 (FGF21) plays an important role in the regulation of energy homeostasis during starvation and has an excellent therapeutic potential for the treatment of type 2 diabetes in rodents and monkeys. Acute exercise affects glucose and lipid metabolism by increasing glucose uptake and lipolysis. However, it is not known whether acute exercise affects FGF21 expression. Here, we showed that serum FGF21 level is increased in mice after a single bout of acute exercise, and that this is accompanied by increased serum levels of free fatty acid, glycerol and ketone body. FGF21 gene expression was induced in the liver but not in skeletal muscle and white adipose tissue of mice after acute exercise, and further, the gene expression levels of hepatic peroxisome proliferator-activated receptor α (PPARα) and activating transcription factor 4 (ATF4) were also increased. In addition, we observed increased FGF21 level in serum of healthy male volunteers performing a treadmill run at 50 or 80% VO2max. These results suggest that FGF21 may also be associated with exercise-induced lipolysis in addition to increased catecholamines and reduced insulin.
authors.affiliation: Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-dong Gangnam-gu, Seoul, Korea.
authors.forename: Kook Hwan
authors.initials: KH
authors.lastname: Kim
authors.forename: Seong Hun
authors.initials: SH
authors.lastname: Kim
authors.forename: Young-Ki
authors.initials: YK
authors.lastname: Min
authors.forename: Hun-Mo
authors.initials: HM
authors.lastname: Yang
authors.forename: Jeong-Beom
authors.initials: JB
authors.lastname: Lee
authors.forename: Myung-Shik
authors.initials: MS
authors.lastname: Lee
mesh_terms: D051701:Activating Transcription Factor 4 / Q000378:metabolism; D000818:Animals; D015444:Exercise; D005346:Fibroblast Growth Factors / Q000097:blood / Q000235:genetics*; D005786:Gene Expression Regulation; D006262:Health; D006801:Humans; D008099:Liver / Q000378:metabolism; D008297:Male; D051379:Mice; D008810:Mice, Inbred C57BL; D047493:PPAR alpha / Q000378:metabolism; D010805:Physical Conditioning, Animal; D055815:Young Adult
chemical_list: D047493:PPAR alpha; C414620:fibroblast growth factor 21; D051701:Activating Transcription Factor 4; D005346:Fibroblast Growth Factors