A diurnal rhythm in glucose uptake in brown adipose tissue revealed by in vivo PET-FDG imaging.

A diurnal rhythm in glucose uptake in brown adipose tissue revealed by in vivo PET-FDG imaging.
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DOI:
10.1038/oby.2012.78
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发表时间:
2012-07
期刊:
影响因子:
6.9
通讯作者:
Duffield, Giles E.
Duffield, Giles E.
中科院分区:
医学2区
文献类型:
--
作者:
van der Veen, Daan R.;Shao, Jinping;Chapman, Sarah;Leevy, W. Matthew;Duffield, Giles E.

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Using a micro-PET/CT scanner, we have measured 18F-fluorodeoxyglucose uptake in interscapular brown adipose tissue (iBAT) in C57Bl/6 mice at intervals across a 24-hour light-dark cycle. Our data reveals a strong 24-hour profile of glucose uptake of iBAT, peaking at approximately 9 hours into the light phase of the 12 hour light, 12 hour dark day. BAT is increasingly gaining attention as being involved in metabolic phenotypes and obesity, where BAT, as observed by PET analysis, negatively correlates with obesity and age. Conversely, animals that show perturbations in circadian clocks, behavior and physiology show metabolic phenotypes. The observation of a 24-hour rhythm in glucose uptake in iBAT makes this tissue a candidate site of interaction between metabolic and circadian systems.
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