Diet-induced obese mice retain endogenous leptin action.
Diet-induced obese mice retain endogenous leptin action.
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DOI:
10.1016/j.cmet.2015.04.015
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发表时间:
2015-06-02
期刊:
影响因子:
29
通讯作者:
Perez-Tilve D
中科院分区:
文献类型:
--
作者:
Ottaway N;Mahbod P;Rivero B;Norman LA;Gertler A;D'Alessio DA;Perez-Tilve D
Obesity is characterized by hyperleptinemia and decreased response to exogenous leptin. This has been widely attributed to the development of leptin resistance; a state of impaired leptin signaling proposed to contribute to the development and persistence of obesity. To directly determine endogenous leptin activity in obesity, we treated lean and obese mice with a leptin receptor antagonist. The antagonist increased feeding and body weight (BW) in lean mice but not in obese models of leptin, leptin receptor or melanocortin-4 receptor deficiency. In contrast, the antagonist increased feeding and BW comparably in lean and diet-induced obese (DIO) mice, an increase associated with decreased hypothalamic expression of Socs3, a primary target of leptin. These findings demonstrate that hyperleptinemic DIO mice retain leptin-suppression of feeding comparable to lean mice, and counter the view that resistance to endogenous leptin contributes to the persistence of DIO in mice.
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通讯作者:
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发表时间:
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