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Effect of cafeteria diet feeding on soleus intramyocellular lipid of Wistar rats
Cabot Majem, Cristina; Pouillot, Karl; Roy, Stéphanie; Romero Romero, María del Mar; Vilà Pont, Ruth; Grasa Martínez, Maria del Mar; Esteve Ràfols, Montserrat; Fernández López, José Antonio; Alemany, Marià, 1946-; Remesar Betlloch, Xavier
Universitat de Barcelona
Background: The presence of lipid besides muscle fibres facilitates the energy supply for exercise, but it is also indicative of insulin resistance in the untrained. Muscle lipid is associated with increased dietary energy: hyperlipidic diets induce an increase in intramyocellular lipid deposition in skeletal muscle. Methods: In the present study we analyzed the changes in soleus (a red-fibre muscle) intracellular muscle content under a hyperlipidic (cafeteria) diet in Wistar rats. We also analyzed in parallel the mitochondrial content a relative index of energy output capability. Results: Cafeteria diet-fed rats contained more lipid and mitochondria per unit of muscle section area than controls. Conclusions: The correlation found in the increases of muscle lipid and mitochondria hit at this increase as an adaptation of muscle to oxidize excess energy substrates under conditions of excess energy availability, probably contributing to adaptive thermogenesis.
Dieta
Lípids
Músculs
Mitocondris
Teixit adipós
Rates (Animals de laboratori)
Diet
Lipids
Muscles
Mitochondria
Adipose tissues
Rats as laboratory animals
cc-by (c) Cabot Majem, Cristina et al., 2012
http://creativecommons.org/licenses/by/3.0/es
Article
info:eu-repo/semantics/publishedVersion
Elmer Press
         

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Cabot Majem, Cristina; Pouillot, Karl; Roy, Stéphanie; Romero Romero, María del Mar; Vilà Pont, Ruth; Grasa Martínez, Maria del Mar; Esteve Ràfols, Montserrat; Fernández López, José Antonio; Alemany, Marià, 1946-; Remesar Betlloch, Xavier
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