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Related Concept Videos

Aging01:26

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Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
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Dissecting Aging and Senescence-Current Concepts and Open Lessons.

Christian Schmeer1,2, Alexandra Kretz1,2, Diane Wengerodt1

  • 1Hans-Berger Department of Neurology, Jena University Hospital, 07747 Jena, Thuringia, Germany.

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Aging may be a regulated process, not just random damage. This research explores aging and cellular senescence, proposing new concepts like geroconversion and genosenium to redefine our understanding of aging.

Keywords:
agingamitosenescencebrainepigeneticsgenetic programinflamm-agingrejuvenationreplicative senescence

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Area of Science:

  • Gerontology
  • Cellular Biology
  • Molecular Biology

Background:

  • The nature of aging as a regulated or stochastic process remains debated.
  • Key questions persist regarding aging's reversibility, rejuvenation potential, and its relationship with cellular senescence.
  • Emerging evidence on cellular senescence's benefits and non-replicative roles necessitates a re-evaluation of aging and senescence concepts.

Purpose of the Study:

  • To compare current knowledge on aging and cellular senescence based on key factors.
  • To introduce and define novel concepts: geroconversion, amitosenescence, and genosenium.
  • To explore the potential for an aging-associated secretory phenotype and the role of epigenetic regulation.

Main Methods:

  • Factor-based comparison of existing literature on aging and senescence.
  • Integration of recent cellular and molecular findings.
  • Conceptual framework development for geroconversion, amitosenescence, and genosenium.

Main Results:

  • A framework is proposed to distinguish and understand aging and senescence.
  • New concepts, including geroconversion, amitosenescence, and genosenium, are introduced.
  • The study addresses the potential aging-associated secretory phenotype and epigenetic influences.

Conclusions:

  • A redefinition of aging and senescence is proposed, incorporating new molecular and cellular insights.
  • The concepts of geroconversion, amitosenescence, and genosenium offer a new perspective on aging processes.
  • Further research is needed to elucidate the specific biological and molecular signatures differentiating aging and senescence.