Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Edifici Biomedicina I, Avda Rovira Roure 80, E25196 Lleida, Spain. Electronic address: anna.fernandez@udl.cat. Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Edifici Biomedicina I, Avda Rovira Roure 80, E25196 Lleida, Spain. Electronic address: Natalia.mota@udl.cat. Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Edifici Biomedicina I, Avda Rovira Roure 80, E25196 Lleida, Spain. Electronic address: reinald.pamplona@mex.udl.cat. Centro de Investigaciones Biológicas Margarita Salas CSIC, C. Ramiro de Maeztu, 9, 28040 Madrid, Spain. Electronic address: estela.area@cib.csic.es. Metabolic Pathophysiology Research Group, Department of Experimental Medicine, University of Lleida-IRBLleida, Edifici Biomedicina I, Avda Rovira Roure 80, E25196 Lleida, Spain. Electronic address: manuel.portero@mex.udl.cat.