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@ARTICLE{Okun:168147,
author = {J. G. Okun and P. M. Rusu and A. Y. Chan and Y. Wu and Y.
W. Yap and T. Sharkie and J. Schumacher$^*$ and K. V.
Schmidt and K. M. Roberts-Thomson and R. D. Russell and A.
Zota and S. Hille and A. Jungmann and L. Maggi$^*$ and Y.
Lee and M. Blüher and S. Herzig$^*$ and M. A. Keske and M.
Heikenwälder$^*$ and O. J. Müller and A. J. Rose$^*$},
title = {{L}iver alanine catabolism promotes skeletal muscle atrophy
and hyperglycaemia in type 2 diabetes.},
journal = {Nature metabolism},
volume = {3},
number = {3},
issn = {2522-5812},
address = {[London]},
publisher = {Springer Nature},
reportid = {DKFZ-2021-00712},
pages = {394 - 409},
year = {2021},
note = {Division of Molecular Metabolic Control#EA:A170#},
abstract = {Both obesity and sarcopenia are frequently associated in
ageing, and together may promote the progression of related
conditions such as diabetes and frailty. However, little is
known about the pathophysiological mechanisms underpinning
this association. Here we show that systemic alanine
metabolism is linked to glycaemic control. We find that
expression of alanine aminotransferases is increased in the
liver in mice with obesity and diabetes, as well as in
humans with type 2 diabetes. Hepatocyte-selective silencing
of both alanine aminotransferase enzymes in mice with
obesity and diabetes retards hyperglycaemia and reverses
skeletal muscle atrophy through restoration of skeletal
muscle protein synthesis. Mechanistically, liver alanine
catabolism driven by chronic glucocorticoid and glucagon
signalling promotes hyperglycaemia and skeletal muscle
wasting. We further provide evidence for amino acid-induced
metabolic cross-talk between the liver and skeletal muscle
in ex vivo experiments. Taken together, we reveal a
metabolic inter-tissue cross-talk that links skeletal muscle
atrophy and hyperglycaemia in type 2 diabetes.},
cin = {F180 / A170},
ddc = {610},
cid = {I:(DE-He78)F180-20160331 / I:(DE-He78)A170-20160331},
pnm = {316 - Infektionen, Entzündung und Krebs (POF4-316)},
pid = {G:(DE-HGF)POF4-316},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33758419},
doi = {10.1038/s42255-021-00369-9},
url = {https://inrepo02.dkfz.de/record/168147},
}