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Title

Mitochondrial responsibility in ageing process: innocent, suspect or guilty

AuthorsLópez-Lluch, Guillermo ; Santos-Ocaña, Carlos ; Sánchez-Alcázar, José Antonio ; Moreno Fernández-Ayala, Daniel José; Asencio, Claudio ; Rodríguez-Aguilera, Juan Carlos ; Navas, Plácido
KeywordsOrganism model
Caloric restriction
Resveratrol
Biogenesis
Autophagy
Ageing
Mitochondria
Issue Date2015
PublisherSpringer
CitationBiogerontology 16(5): 599-620 (2015)
AbstractAgeing is accompanied by the accumulation of damaged molecules in cells due to the injury produced by external and internal stressors. Among them, reactive oxygen species produced by cell metabolism, inflammation or other enzymatic processes are considered key factors. However, later research has demonstrated that a general mitochondrial dysfunction affecting electron transport chain activity, mitochondrial biogenesis and turnover, apoptosis, etc., seems to be in a central position to explain ageing. This key role is based on several effects from mitochondrial-derived ROS production to the essential maintenance of balanced metabolic activities in old organisms. Several studies have demonstrated caloric restriction, exercise or bioactive compounds mainly found in plants, are able to affect the activity and turnover of mitochondria by increasing biogenesis and mitophagy, especially in postmitotic tissues. Then, it seems that mitochondria are in the centre of metabolic procedures to be modified to lengthen life- or health-span. In this review we show the importance of mitochondria to explain the ageing process in different models or organisms (e.g. yeast, worm, fruitfly and mice). We discuss if the cause of aging is dependent on mitochondrial dysfunction of if the mitochondrial changes observed with age are a consequence of events taking place outside the mitochondrial compartment.
URIhttp://hdl.handle.net/10261/129602
DOI10.1007/s10522-015-9585-9
Identifiersdoi: 10.1007/s10522-015-9585-9
e-issn: 1573-6768
issn: 1389-5729
Appears in Collections:(CABD) Artículos
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