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Title: Anti-obesity sodium tungstate treatment triggers axonal and glial plasticity in hypothalamic feeding centers
Author: Amigó-Correig, Marta
Barceló-Batllori, Sílvia
Soria, Guadalupe
Krezymon, Alice
Benani, Alexandre
Pénicaud, Luc
Tudela Fernández, Raúl
Planas Obradors, Anna Maria
Fernández, Eduardo
Carmona, Maria del Carmen
Gomis, Ramon, 1946-
Keywords: Compostos de tungstè
Ressonància magnètica
Expressió gènica
Malaltia d'Alzheimer
Rates (Animals de laboratori)
Tungsten compounds
Magnetic resonance
Gene expression
Alzheimer's disease
Rats as laboratory animals
Issue Date: 3-Jul-2012
Publisher: Public Library of Science (PLoS)
Abstract: Objective: This study aims at exploring the effects of sodium tungstate treatment on hypothalamic plasticity, which is known to have an important role in the control of energy metabolism. Methods: Adult lean and high-fat diet-induced obese mice were orally treated with sodium tungstate. Arcuate and paraventricular nuclei and lateral hypothalamus were separated and subjected to proteomic analysis by DIGE and mass spectrometry. Immunohistochemistry and in vivo magnetic resonance imaging were also performed. Results: Sodium tungstate treatment reduced body weight gain, food intake, and blood glucose and triglyceride levels. These effects were associated with transcriptional and functional changes in the hypothalamus. Proteomic analysis revealed that sodium tungstate modified the expression levels of proteins involved in cell morphology, axonal growth, and tissue remodeling, such as actin, CRMP2 and neurofilaments, and of proteins related to energy metabolism. Moreover, immunohistochemistry studies confirmed results for some targets and further revealed tungstate-dependent regulation of SNAP25 and HPC-1 proteins, suggesting an effect on synaptogenesis as well. Functional test for cell activity based on c-fos- positive cell counting also suggested that sodium tungstate modified hypothalamic basal activity. Finally, in vivo magnetic resonance imaging showed that tungstate treatment can affect neuronal organization in the hypothalamus. Conclusions: Altogether, these results suggest that sodium tungstate regulates proteins involved in axonal and glial plasticity. The fact that sodium tungstate could modulate hypothalamic plasticity and networks in adulthood makes it a possible and interesting therapeutic strategy not only for obesity management, but also for other neurodegenerative illnesses like Alzheimer's disease.
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It is part of: PLoS One, 2012, vol. 7, num. 7, p. e39087-1-e39087-12
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ISSN: 1932-6203
Appears in Collections:Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)
Articles publicats en revistes (Cirurgia i Especialitats Medicoquirúrgiques)
Articles publicats en revistes (Medicina)

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