Abstract
The AMP-activated protein kinase (AMPK) has become an inescapable topic in metabolic disorders. AMPK is a highly conserved eukaryotic protein serine/threonine kinase, which is involved in energy homeostasis both at the cellular and whole-body levels [1–3]. It mediates a nutrient signaling pathway that senses the energy status of the cell and is activated by energy imbalance as a result of decreased ATP production (hypoxia) or increased ATP consumption (muscle contraction). Liver AMPK activity is also modulated by cytokines that regulates whole-body energy homeostasis. At the cellular level, AMPK restores energy charge by switching off anabolic ATP-consuming pathways, while switching on catabolic ATP-generating pathways. It also plays a critical role in systemic energy homeostasis by controlling food intake in the hypothalamus [1–3]. Therefore, AMPK orchestrates a global metabolic response to energy deprivation and can be regarded as a starvation signal. This short article reviews the conditions and consequences of AMPK activation in liver and the potential implication of AMPK in liver diseases.
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Acknowledgments
The work carried out in the authors’ laboratory was supported by the Belgian Fund for Medical Scientific Research, the Interuniversity Poles of Attraction Belgian Science Policy , the French Community of Belgium (Actions de Recherche Concertées) and the EXGENESIS Integrated Project (LSHM-CT-2004-005272) from the European Commission.
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Hue, L., Bultot, L., Rider, M.H. (2010). AMP-Activated Protein Kinase in Liver. In: Dufour, JF., Clavien, PA. (eds) Signaling Pathways in Liver Diseases. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00150-5_18
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