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Iasim Tahiri

As seen in: Nature, Cell Metabolism
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Articles

Glycogen drives the sensory activation of POMC neurons

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By Alicia G. Gómez-Valadés, David Meseguer, Luis Varela Verified, Gabrièle Lienhard, Uxía Fernández, Andrés Vidal-Itriago, Miriam Toledo, Elena Eyre, Berta Laudo, Francisco Diaz-Castro, Macarena Pozo, Mehdi Boutagouga Boudjadja, Júlia Fos-Domènech, Pau García-Ramón, Mariana G Ferreira, Jordi Altirriba, Daniel Beiroa, Bandy Chen, Maria Milà-Guasch, Iñigo Chivite, Arnaud Obri, Sara Cuentas Ramírez, Roberta Haddad-Tóvolli, Iasim Tahiri, Giuseppe D’Agostino, Rubén Nogueiras, Nicolas Renier, Tamas L. Horvath, Tamás Horváth, Joan J. Guinovart, Jordi Duran, Marc Schneeberger, Marc Claret, Amanda Rodríguez-Díaz, Mathew S. Gentry
| Nature Verified
Abstract Hypothalamic POMC neurons modulate systemic energy balance and glucose homeostasis by sensing nutritional state signals. In addition to this classic regulatory mode, these neurons are also activated by the sensory perception of food. Here, we report that food-related sensory cues engage glycogen metabolism in POMC neurons. Genetic depletion of glycogen through various approaches renders POMC neurons unresponsive to food-associated sensory stimuli.
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Deletion of Mfn2 in endothelial cells triggers a mitohormetic response that improves systemic metabolism and healthspan in mice

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By Iñigo Chivite, Erika Monelli, Margalida Munar-Gelabert, Alicia G. Gómez-Valadés, Abdiel Alvarado-Diaz, Macarena Pozo, Luis Varela Verified, Sara Ramírez, Roberta Haddad-Tóvolli, Miriam Toledo, Júlia Fos-Domènech, Francisco Diaz-Castro, Iasim Tahiri, Mariana AM Ferreira, Anne Abot, Óscar Osorio-Conles, José Valer, Arnaud Obri, Maria Milà-Guasch, Jorge Luis, Pilar Villacampa, Elena Eyre, Jordi Altirriba, Markus Haake, Christine Schuberth-Wagner, Xavier Remesar, Antonio Zorzano, Pablo M. Garcia-Roves, Francesc Ventura, Josep Vidal, Claude Knauf, Rubén Nogueiras, Tamas L. Horvath, Tamás Horváth, Katrien De Bock, Mariona Graupera, Marc Claret, Pau García-Ramón, Chloé van Gelder, Sabrina Genßler
| Cell Metabolism Verified
Body weight and body composition Body weight and discrete adipose tissue pad mass were measured using a precision scale. Whole-body composition was determined using NMR imaging (EchoMRI; Echo Medical Systems). Analysis of whole-body fat depots were performed using a 7.0 T BioSpec 70/30 horizontal animal scanner (Bruker) and quantified as previously described.80 Metabolic tests Food intake was measured in acclimatized singly-housed mice using a precision scale.
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