Cited by 218Genetics, Aging, and Longevity in Model OrganismsTelomeres, Telomerase, and SenescenceCell death mechanisms and regulation

Cellular senescence and apoptosis: how cellular responses might influence aging phenotypes

Open access
Campisi, J·2003·Experimental Gerontology

Abstract

Aging in complex multi-cellular organisms such as mammals entails distinctive changes in cells and molecules that ultimately compromise the fitness of adult organisms. These cellular and molecular changes lead to the phenotypes we recognize as aging. This review discusses some of the cellular and molecular changes that occur with age, specifically changes that occur as a result of cellular responses that evolved to ameliorate the inevitable damage that is caused by endogenous and environmental insults. Because the force of natural selection declines with age, it is likely that these processes were never optimized during their evolution to benefit old organisms. That is, some age-related changes may be the result of gene activities that were selected for their beneficial effects in young organisms, but the same gene activities may have unselected, deleterious effects in old organisms, a phenomenon termed antagonistic pleiotropy. Two cellular processes, apoptosis and cellular senescence, may be examples of antagonistic pleiotropy. Both processes are essential for the viability and fitness of young organisms, but may contribute to aging phenotypes, including certain age-related diseases.

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  • Normal aging is accompanied by reductions in gray matter volume and functional changes in prefrontal, medial temporal, and parietal cortices.

    “magnetic resonance imaging (MRI) studies have shown that normal aging is associated with gray matter volume reductions and functional alterations in several regions critical for higher cognitive function: prefrontal, medial temporal and parietal cortices.21–24”

    From Maintenance, reserve and compensation: the cognitive neuroscience of healthy ageing (2018) · cites this paper as [24]

    Section 2.1 (Apoptosis; page unavailable) discusses possible neuronal loss with aging, but does not report MRI findings, gray matter volume reductions, or functional changes in the named cortices. Searches for those cortical regions and for MRI and gray matter volume found no passage addressing the claim. (LLM, conf=0.76)

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  • Young adults may also upregulate activity in response to increased task demands, but the demand threshold for upregulation may be higher in young than in older adults.

    “It is worth noting that young adults may also upregulate activity in response to increased task demands, but that the demand threshold for upregulation may be higher in young, compared to older adults24,36.”

    From Maintenance, reserve and compensation: the cognitive neuroscience of healthy ageing (2018) · cites this paper as [24]

    Section 2.1 discusses apoptosis and neuronal compensation after cell loss; Figure 1 discusses thresholds at which tissue health becomes compromised. Neither addresses activity upregulation in response to task demands or compares the demand thresholds of young and older adults (searched for task demands and cognitive activity upregulation). Page numbers are unavailable in our copy. (LLM, conf=0.77)

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Research works printed but not linked: 1

  1. Dimri, G. P., Lee, X., Basile, G., Acosta, M., Scott, G., Roskelley, C., Medrano, E. E., Linskens, M., Rubelj, I., Pereira-Smith, O. M., Peacocke, M., Campisi, J. 1995. A novel biomarker identifies senescent human cells in culture and in aging skin in vivo. Proc. Natl. Acad. Sci. USA 92, 9363-9367.

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Authors
Campisi, J.
Affiliations
Buck Institute for Research on Aging (US)
Corresponding author
Campisi, J
Venue
Experimental Gerontology
Publisher
Elsevier BV
Published
2003-01
Volume
38
Issue
1-2
Pages
5-11
ISSN
0531-5565 (ISSN-L)
OpenAlex
W1973723400
Cited by
218
References
70
Citations by year
2026: 1 · 2025: 8 · 2024: 5 · 2023: 7 · 2022: 4 · 2021: 8 · 2020: 6 · 2019: 2 · 2018: 8 · 2017: 6 · 2016: 4 · 2015: 5 · 2014: 10 · 2013: 11 · 2012: 11
FWCI
6.17
Type
journal article
Language
en
Open access
Locations
  • Experimental Gerontology (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • U.S. Department of Energy
  • Ellison Medical Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Aging › Genetics, Aging, and Longevity in Model Organisms
  • Health Sciences › Medicine › Physiology › Telomeres, Telomerase, and Senescence
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
cellular senescence, apoptosis, aging, antagonistic pleiotropy, age-related diseases, natural selection, evolutionary trade-offs, aging phenotypes
MeSH terms
Aged, Aging, Animals, Gene Expression Regulation, Humans, Mammals, Neoplasms, Genes, Tumor Suppressor, Cellular Senescence, Apoptosis, Multifactorial Inheritance

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