期刊
CELL REPORTS
卷 10, 期 2, 页码 266-279出版社
CELL PRESS
DOI: 10.1016/j.celrep.2014.12.023
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类别
资金
- NIH [R01NS072241]
- NIH Common Funds Project [U24 DK097153]
To understand the contribution of adipose tissue fatty acid oxidation to whole-body metabolism, we generated mice with an adipose-specific knockout of carnitine palmitoyltransferase 2 (CPT2(A-/-)), an obligate step in mitochondrial long-chain fatty acid oxidation. CPT2(A-/-) mice became hypothermic after an acute cold challenge, and CPT2(A-/-) brown adipose tissue (BAT) failed to upregulate thermogenic genes in response to agonist-induced stimulation. The adipose-specific loss of CPT2 resulted in diet-dependent changes in adiposity but did not result in changes in body weight on low-or high-fat diets. Additionally, CPT2(A-/-) mice had suppressed high-fat diet-induced oxidative stress and inflammation in visceral white adipose tissue (WAT); however, high-fat diet-induced glucose intolerance was not improved. These data show that fatty acid oxidation is required for cold-induced thermogenesis in BAT and high-fat diet-induced oxidative stress and inflammation in WAT.
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