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Age‐dependent decline in the cytochrome c oxidase activity in rat heart mitochondria: role of cardiolipin

Paradies, Giuseppe, Ruggiero, Francesca Maria, Petrosillo, Giuseppe, Quagliariello, Ernesto·1997·FEBS Letters

Abstract

Cardiolipin is a major mitochondrial membrane lipid and plays a pivotal role in mitochondrial function. We have recently suggested a possible involvement of this phospholipid in the age‐linked decline of cytochrome c oxidase activity in rat heart mitochondria [G. Paradies et al. (1993) Arch. Gerontol. Geriatr. 16, 263–272]. The aim of this work was to test our earlier proposal. We have investigated whether addition of exogenous cardiolipin to mitochondria is able to reverse, in situ, the age‐linked decrease in the cytochrome oxidase activity. The method of fusion of liposomes with mitochondria developed by Hackenbrock [Hackenbrock and Chazotte (1986) Methods Enzymol. 125, 35–45] was employed in order to enrich the mitochondria cardiolipin content. We demonstrate that the lower cytochrome c oxidase activity in heart mitochondria from aged rats can be fully restored to the level of young control rats by exogenously added cardiolipin. No restoration was obtained with other phospholipids or with peroxidized cardiolipin. Our data support a key role for cardiolipin in the age‐linked decline of rat heart mitochondrial cytochrome c oxidase activity.

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Metadata

Authors
Paradies, G., Ruggiero, F. M., Petrosillo, G., & Quagliariello, E.
Venue
FEBS Letters
Publisher
Wiley
Published
1997-04-07
Volume
406
Issue
1-2
Pages
136-138
ISSN
  • 0014-5793 (ISSN-L)
  • 1873-3468
OpenAlex
W2089444518
Cited by
163
References
0
FWCI
1.80
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Age‐dependent decline in the cytochrome c oxidase activity in rat heart mitochondria: role of cardiolipin. https://app.cochat.ai/papers/10.1016/s0014-5793(97)00264-0
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Paradies, G., Ruggiero, F. M., Petrosillo, G., & Quagliariello, E. (1997). Age‐dependent decline in the cytochrome c oxidase activity in rat heart mitochondria: role of cardiolipin. FEBS Letters. https://doi.org/10.1016/s0014-5793(97)00264-0

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