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Title:
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Molecular phenomics of a high-calorie diet-induced porcine model of prepubertal obesity
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Author:
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Jové Font, Mariona; Tibau, Joan; Serrano Casasola, José Carlos Enrique; Berdún Hernández, Rebeca; Rodríguez Palmero, María; Font-i-Furnols, Maria; Cassanyé, Anna; Rodriguez Mortera, Reyna; Sol, Joaquim; Rassendren, Helene; Fàbrega, Emma; Crescenti, Anna; Castell, Anna; Sabater, Mónica; Ortega, Francisco J.; Martín Garí, Meritxell; Quintanilla Aguado, Raquel; Puigjaner, Joaquim; Moreno, José Antonio; Prat, Joan; Arola i Ferrer, Lluís; Fernández Real, José Manuel; Pamplona Gras, Reinald; Portero Otín, Manuel
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Notes:
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As obesity incidence is alarmingly rising among young individuals, we aimed to characterize an experimental model of this situation, considering the similarity between human and porcine physiology. For this reason, we fed prepubertal (63 days old) Duroc breed females (n=21) either with a standard growth diet (3800 kcal/day) or one with a high-calorie content (5200 kcal/day) during 70 days. Computerized tomography, mass-spectrometry-based metabolomics and lipidomics, as well as peripheral blood mononuclear cell transcriptomics, were applied to define traits linked to high-calorie intake. Samples from a human cohort confirmed potential lipidomic markers. Compared to those fed a standard growth diet, pigs fed a high-calorie diet showed an increased weight gain (13%), much higher adiposity (53%), hypertriacylglyceridemia and hypercholesterolemia in parallel to insulin resistance. This diet induced marked changes in the circulating lipidome, particularly in phosphatidylethanolamine-type molecules. Also, circulating specific diacylglycerol and monoacylglycerol contents correlated with visceral fat and intrahepatic triacylglycerol concentrations. Specific lipids associated with obesity in swine (mainly belonging to glycerophospholipid, triacylglyceride and sterol classes) were also linked with obesity traits in the human cohort, reinforcing the usefulness of the chosen approach. Interestingly, no overt inflammation in plasma or adipose tissue was evident in this model. The presented model is useful as a preclinical surrogate of prepubertal obesity in order to ascertain the pathophysiology interactions between energy intake and obesity development.
Supported by Centro para el Desarrollo Tecnológico e Industrial, Spain, Project reference: IPT-20111008, and Generalitat de Catalunya grants 2017SGR1719 and 2017SGR696. MJ is a "Serra Hunter" program fellow. Supported by Instituto de Salud Carlos III, Spain, Project reference: 17-00134, co-financed by FEDER Funds A way to make Europe. |
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Subject(s):
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-Lipidomics
-Biomarkers
-Insulin resistance
-Preclinical models
-Metabolomics
-Adipose tissue |
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Rights:
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cc-by-nc-nd (c) Elsevier, 2020
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/embargoedAccess |
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Document type:
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Article
Article - Accepted version |
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Published by:
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Elsevier
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