期刊
CELL METABOLISM
卷 28, 期 3, 页码 415-+出版社
CELL PRESS
DOI: 10.1016/j.cmet.2018.06.010
关键词
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资金
- Chinese Academy of Sciences Strategic Program [XDB13030100]
- 1000 Talents program
- Wolfson merit award
- National Natural Science Foundation of China [31570409]
- Guangdong Academy of Sciences [2017GDASCX-0107]
The impacts of different macronutrients on body weight regulation remain unresolved, with different studies suggesting increased dietary fat, increased carbohydrates (particularly sugars), or reduced protein may all stimulate overconsumption and drive obesity. We exposed C57BL/6 mice to 29 different diets varying from 8.3% to 80% fat, 10% to 80% carbohydrate, 5% to 30% protein, and 5% to 30% sucrose. Only increased dietary fat content was associated with elevated energy intake and adiposity. This response was associated with increased gene expression in the 5-HT receptors, and the dopamine and opioid signaling pathways in the hypothalamus. We replicated the core findings in four other mouse strains (DBA/2, BALB/c, FVB, and C3H). Mice regulate their food consumption primarily to meet an energy rather than a protein target, but this system can be over-ridden by hedonic factors linked to fat, but not sucrose, consumption.
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