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dc.contributor.authorGómez, José
dc.contributor.authorCaro, Pilar
dc.contributor.authorNaudí i Farré, Alba
dc.contributor.authorPortero Otín, Manuel
dc.contributor.authorPamplona Gras, Reinald
dc.contributor.authorBarja, Gustavo
dc.date.accessioned2016-06-01T08:17:57Z
dc.date.issued2007
dc.identifier.issn1389-5729
dc.identifier.urihttp://hdl.handle.net/10459.1/57137
dc.description.abstractPrevious studies have consistently shown that 40% caloric restriction (CR) decreases the rate of mitochondrial ROS production and steady-state levels of markers of oxidative damage to macromolecules including mitochondrial DNA. However, few investigations have studied whether these changes also occur in lower CR regimes. This is of potential interest since moderate levels of dietary restriction are more practicable for humans. In this investigation male Wistar rats were subjected to 8.5% and 25% caloric restriction. Neither 8.5% nor 25% CR changed mitochondrial ROS production, oxygen consumption or mtDNA oxidative damage in rat liver mitochondria. However, both 8.5% and 25% CR significantly decreased the five different markers of protein oxidation, glycoxidation and lipoxidation measured, aminoadipic and glutamic semialdehyde, carboxyethyl-lysine, carboxymethyl-lysine, and malondialdehyde-lysine. The fatty acid composition of liver mitochondria was also affected and led to a moderate decrease in the degree of membrane unsaturation in both 8.5% and 25% CR. While 8.5% CR only affected complex I concentration (which was decreased), 25% CR decreased complexes I and IV and increased complexes II and III of the respiratory chain. Apoptosis-inducing factor (AIF) significantly decreased in 25% CR but not in 8.5% CR. The results show that moderate levels of caloric restriction can have beneficial effects including decreases in oxidative protein modification and a lower sensitivity of membranes to lipid peroxidation, in association with a reprogramming of the respiratory chain complexes and AIF content.ca_ES
dc.description.sponsorshipThis study was supported in part by I + D grants from the Spanish Ministry of Education and Science (BFU2006-14495/BFI), Spanish Ministry of Health (ISCIII, Red de Envejecimiento y Fragilidad, RD06/0013/ 0012), and the Generalitat of Catalunya (2005SGR00101) to R.P.; from the COST B35 Action, Spanish Ministry of Health (FIS 05-2241), Spanish Ministry of Education and Science (AGL2006-12433), and ‘‘La Caixa’’ Foundation to M.P.O.; and from the Spanish Ministry of Education and Science (BFU2005-02584) and from CAM/UCM groups (910521) to G.B.; A. Naudi received a predoctoral fellowship from ‘‘La Caixa’’ Foundation. P. Caro and J. Gómez received predoctoral fellowships from the Ministry of Education and Science.ca_ES
dc.language.isoengca_ES
dc.publisherSpringer Verlagca_ES
dc.relationMIECI/PN2004-2007/BFU2006-14495/BFI
dc.relationMIECI/PN2004-2007/AGL2006-12433
dc.relationMIECI/PN2004-2007/BFU2005-02584
dc.relation.isformatofReproducció del document publicat a https://doi.org/ 10.1007/s10522-007-9099-1ca_ES
dc.relation.ispartofBiogerontology, 2007, vol. 8, núm. 5, p. 555-566ca_ES
dc.rights(c) Springer Science Business Media B.V., 2007ca_ES
dc.subjectAgingca_ES
dc.subjectOxygen radicalsca_ES
dc.subjectDNA damageca_ES
dc.subjectProtein damageca_ES
dc.titleEffect of 8.5% and 25% caloric restriction on mitochondrial free radical production and oxidative stress in rat liverca_ES
dc.typearticleca_ES
dc.identifier.idgrec010935
dc.type.versionpublishedVersionca_ES
dc.rights.accessRightsinfo:eu-repo/semantics/restrictedAccessca_ES
dc.identifier.doihttps://doi.org/ 10.1007/s10522-007-9099-1
dc.date.embargoEndDate2025-01-01


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