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Lipotoxicity, Fatty Acid Uncoupling and Mitochondrial Carrier Function

AuthorsRial, Eduardo ; Rodríguez-Sánchez, Leonor ; Gallardo-Vara, Eunate ; Zaragoza, Pilar ; Moyano, Eva; González-Barroso, M. Mar
KeywordsFatty acid
oxidative stress
Issue DateJun-2010
CitationBBA - Biochimica et Biophysica Acta, 1797 (6-7) : 800-806 (2010)
AbstractDiseases like obesity, diabetes or generalized lipodystrophy cause a chronic elevation of circulating fatty acids that can become cytotoxic, a condition known as lipotoxicity. Fatty acids cause oxidative stress and alterations in mitochondrial structure and function. The uncoupling of the oxidative phosphorylation is one of the most recognized deleterious fatty acid effects and several metabolite transporters are known to mediate in their action. The fatty acid interaction with the carriers leads to membrane depolarization and/or the conversion of the carrier into a pore. The result is the opening of the permeability transition pore and the initiation of apoptosis. Unlike the other members of the mitochondrial carrier superfamily, the eutherian uncoupling protein UCP1 has evolved to achieve its heat-generating capacity in the physiological context provided by the brown adipocyte and therefore it is activated by the low fatty acid concentrations generated by the noradrenaline-stimulated lipolysis
Description7 páginas, 3 figuras -- PAGS nros. 800-806
Publisher version (URL)http://dx.doi.org/10.1016/j.bbabio.2010.04.001
Appears in Collections:(CIB) Artículos
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