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Comment
. 2007 Jun;5(6):405-7.
doi: 10.1016/j.cmet.2007.05.010.

FGF21: a missing link in the biology of fasting

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FGF21: a missing link in the biology of fasting

Marc L Reitman. Cell Metab. 2007 Jun.
Free article

Abstract

A sufficient energy supply is essential for life; consequently, multiple mechanisms have evolved to ensure both energy availability and conservation during fasting and starvation. Two reports in this issue of Cell Metabolism (Badman et al., 2007; Inagaki et al., 2007) demonstrate that FGF21, a circulating protein produced in the liver in response to the PPARalpha transcription factor, is a "missing link" in the biology of fasting, inducing adipose tissue lipolysis, liver ketogenesis, and metabolic adaptation to the fasting state.

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