Cited by 358Mitochondrial Function and PathologyGenetics, Aging, and Longevity in Model OrganismsAutophagy in Disease and Therapy

The role of mitochondrial ROS in the aging brain

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Stefanatos, Rhoda, Sanz, Alberto·2018·FEBS Letters

Abstract

The brain is the most complex human organ, consuming more energy than any other tissue in proportion to its size. It relies heavily on mitochondria to produce energy and is made up of mitotic and postmitotic cells that need to closely coordinate their metabolism to maintain essential bodily functions. During aging, damaged mitochondria that produce less ATP and more reactive oxygen species (ROS) accumulate. The current consensus is that ROS cause oxidative stress, damaging mitochondria and resulting in an energetic crisis that triggers neurodegenerative diseases and accelerates aging. However, in model organisms, increasing mitochondrial ROS (mt ROS) in the brain extends lifespan, suggesting that ROS may participate in signaling that protects the brain. Here, we summarize the mechanisms by which mt ROS are produced at the molecular level, how different brain cells and regions produce different amounts of mt ROS, and how mt ROS levels change during aging. Finally, we critically discuss the possible roles of ROS in aging as signaling molecules and damaging agents, addressing whether age‐associated increases in mt ROS are a cause or a consequence of aging.

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  • Mitochondrial dysfunction plays a pivotal role in the aging process, affecting cellular function including energy metabolism and oxidative stress.

    “Mitochondrial dysfunction plays a pivotal role in the aging process, affecting various aspects of cellular function, including energy metabolism and oxidative stress.”

    From Aging promotes an increase in mitochondrial fragmentation in astrocytes (2024) · cites this paper as Stefanatos and Sanz, 2018

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Authors
Stefanatos, R., & Sanz, A.
Affiliations
Newcastle University (GB)
Corresponding author
Sanz, Alberto
Venue
FEBS Letters
Publisher
Wiley
Published
2017-11-15
Volume
592
Issue
5
Pages
743-758
ISSN
  • 0014-5793 (ISSN-L)
  • 1873-3468
OpenAlex
W2767505663
Cited by
358
References
21
Citations by year
2026: 21 · 2025: 45 · 2024: 49 · 2023: 55 · 2022: 63 · 2021: 57 · 2020: 38 · 2019: 18 · 2018: 12
FWCI
1.76
Type
journal article
Language
en
Open access
Locations
  • FEBS Letters (publishedVersion)
  • PubMed (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (acceptedVersion, cc-by-sa)
  • Newcastle University ePrints (Newcastle Univesity)
Funders
  • European Research Council (260632)
  • Biotechnology and Biological Sciences Research Council (BB/M023311/1)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
mitochondrial reactive oxygen species, brain aging, oxidative stress, mitochondrial dysfunction, neurodegeneration, lifespan extension, ROS signaling, brain energy metabolism
MeSH terms
Adenosine Triphosphate, Aging, Animals, Brain, Energy Metabolism, Humans, Mitochondria, Signal Transduction, Reactive Oxygen Species, Neurodegenerative Diseases

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