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- W2010365726 abstract "Recently, we have shown that neuropeptide Y (NPY) is produced and upregulated in visceral adipose tissue of an early-life programmed rat model of central obesity. Moreover, we have demonstrated that NPY promotes proliferation of adipocyte precursor cells and contributes to the pathogenesis of obesity. However, the role of NPY in regulating adipocyte metabolism is poorly understood. The present study was designed to examine the effects of NPY on adipocyte metabolic function using 3T3-L1 adipocytes as an in vitro cell model system. We found that although it did not affect basal lipolysis, NPY potentiated isoproterenol (a β-adrenergic receptor agonist) stimulated lipolysis. Furthermore, this potentiation occurred upstream of adenylyl cyclase, since NPY did not enhance forskolin (an activator of adenylyl cyclase) stimulated lipolysis. In addition, NPY also augmented isoproterenol-stimulated phosphorylation of hormone sensitive lipase. In contrast, NPY did not alter the expression of several key lipolytic and lipogenic enzymes/proteins. Taken together, our results revealed a novel cross talk between the NPY and β-adrenergic signaling pathways in regulating lipolysis. Thus, the present findings add a new dimension to the dynamic role NPY plays in regulating energy balance." @default.
- W2010365726 created "2016-06-24" @default.
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- W2010365726 date "2012-10-01" @default.
- W2010365726 modified "2023-09-26" @default.
- W2010365726 title "Neuropeptide Y potentiates beta-adrenergic stimulation of lipolysis in 3T3-L1 adipocytes" @default.
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- W2010365726 doi "https://doi.org/10.1016/j.regpep.2012.06.002" @default.
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