期刊
JOURNAL OF CLINICAL INVESTIGATION
卷 115, 期 11, 页码 3035-3044出版社
AMER SOC CLINICAL INVESTIGATION INC
DOI: 10.1172/JCI25681
关键词
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资金
- NIDDK NIH HHS [U24 DK059630, DK56863, R01 DK054080, P01 DK056863, DK54080, DK59630] Funding Source: Medline
Many proinflammatory cytokines, such as leptin, play key roles in dynamic regulation of energy expenditure and food intake. The present work tested a role for the proinflammatory cytokine GM-CSF. Central but not peripheral administration of GM-CSF to adult rats significantly decreased food intake and body weight for at least 48 hours. Similar results were observed following central administration of GM-CSF in mice. GM-CSF receptor immunoreactivity was found on neurons within the paraventricular and arcuate nuclei of the hypothalamus. GM-CSF-deficient (GM(-/-)) mice weighed more and had significantly higher total body fat than wildtype (GM(+/+)) mice. Energy expenditure in GM-/- mice was decreased compared with that in GM(+/+) mice. Taken together, these findings demonstrate that GM-CSF signaling in the CNS can regulate energy homeostasis.
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