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Changes of mitochondrial ultrastructure and function during ageing in mice and Drosophila

Brandt, T; Mourier, A; Tain, LS; Partridge, L; Larsson, N-G; Kühlbrandt, W; (2017) Changes of mitochondrial ultrastructure and function during ageing in mice and Drosophila. Elife , 6 , Article e24662. 10.7554/eLife.24662. Green open access

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Abstract

Ageing is a progressive decline of intrinsic physiological functions. We examined the impact of ageing on the ultrastructure and function of mitochondria in mouse and fruit flies (Drosophila melanogaster) by electron cryo-tomography and respirometry and discovered distinct age-related changes in both model organisms. Mitochondrial function and ultrastructure are maintained in mouse heart, whereas subpopulations of mitochondria from mouse liver show age-related changes in membrane morphology. Subpopulations of mitochondria from young and old mouse kidney resemble those described for apoptosis. In aged flies, respiratory activity is compromised and the production of peroxide radicals is increased. In about 50% of mitochondria from old flies, the inner membrane organization breaks down. This establishes a clear link between inner membrane architecture and functional decline. Mitochondria were affected by ageing to very different extents, depending on the organism and possibly on the degree to which tissues within the same organism are protected against mitochondrial damage.

Type: Article
Title: Changes of mitochondrial ultrastructure and function during ageing in mice and Drosophila
Location: England
Open access status: An open access version is available from UCL Discovery
DOI: 10.7554/eLife.24662
Publisher version: http://doi.org/10.7554/eLife.24662
Language: English
Additional information: Copyright Brandt et al. This article is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use and redistribution provided that the original author and source are credited.
Keywords: D. melanogaster, biochemistry, biophysics, mouse, structural biology
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Genetics, Evolution and Environment
URI: http://discovery.ucl.ac.uk/id/eprint/1559910
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