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Cited by 510

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons

Open access
Claret, Marc, Smith, Mark A., Batterham, Rachel L., Selman, Colin, Choudhury, Agharul I., Fryer, Lee G.D., Clements, Melanie, Al-Qassab, Hind, Heffron, Helen, Xu, Allison W., Speakman, John R., Barsh, Gregory S., Viollet, Benoit, Vaulont, Sophie, Ashford, Michael L.J., Carling, David, Withers, Dominic J.·2007·Journal of Clinical Investigation

Abstract

Hypothalamic AMP-activated protein kinase (AMPK) has been suggested to act as a key sensing mechanism, responding to hormones and nutrients in the regulation of energy homeostasis. However, the precise neuronal populations and cellular mechanisms involved are unclear. The effects of long-term manipulation of hypothalamic AMPK on energy balance are also unknown. To directly address such issues, we generated POMC alpha 2KO and AgRP alpha 2KO mice lacking AMPK alpha2 in proopiomelanocortin- (POMC-) and agouti-related protein-expressing (AgRP-expressing) neurons, key regulators of energy homeostasis. POMC alpha 2KO mice developed obesity due to reduced energy expenditure and dysregulated food intake but remained sensitive to leptin. In contrast, AgRP alpha 2KO mice developed an age-dependent lean phenotype with increased sensitivity to a melanocortin agonist. Electrophysiological studies in AMPK alpha2-deficient POMC or AgRP neurons revealed normal leptin or insulin action but absent responses to alterations in extracellular glucose levels, showing that glucose-sensing signaling mechanisms in these neurons are distinct from those pathways utilized by leptin or insulin. Taken together with the divergent phenotypes of POMC alpha 2KO and AgRP alpha 2KO mice, our findings suggest that while AMPK plays a key role in hypothalamic function, it does not act as a general sensor and integrator of energy homeostasis in the mediobasal hypothalamus.

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Metadata

Authors
Claret, M., Smith, M. A., Batterham, R. L., Selman, C., Choudhury, A. I., Fryer, L. G. D., Clements, M., Al-Qassab, H., Heffron, H., Xu, A. W., Speakman, J. R., Barsh, G. S., Viollet, B., Vaulont, S., Ashford, M. L. J., Carling, D., & Withers, D. J.
Venue
Journal of Clinical Investigation
Published
2007-08-01
Volume
117
Issue
8
Pages
2325-2336
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2096591765
Cited by
510
References
17
FWCI
13.32
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons. https://app.cochat.ai/papers/10.1172/jci31516
The paper
Claret, M., Smith, M. A., Batterham, R. L., Selman, C., Choudhury, A. I., Fryer, L. G. D., Clements, M., Al-Qassab, H., Heffron, H., Xu, A. W., Speakman, J. R., Barsh, G. S., Viollet, B., Vaulont, S., Ashford, M. L. J., Carling, D., & Withers, D. J. (2007). AMPK is essential for energy homeostasis regulation and glucose sensing by POMC and AgRP neurons. Journal of Clinical Investigation. https://doi.org/10.1172/jci31516

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.