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Related Concept Videos

Aging01:26

Aging

367
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.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
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The Effect of Aging on Tissues01:19

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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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Mitochondria01:37

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Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Related Experiment Video

Updated: Oct 30, 2025

Obtaining Specimens with Slowed, Accelerated and Reversed Aging in the Honey Bee Model
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New Perspectives on Avian Models for Studies of Basic Aging Processes.

James M Harper1, Donna J Holmes2

  • 1Department of Biological Sciences, Sam Houston State University, Huntsville, TX 77341, USA.

Biomedicines
|July 2, 2021
PubMed
Summary

Birds exhibit remarkable longevity due to enhanced cellular defenses and stress resistance. Ongoing research in avian geroscience using advanced "-omic" tools promises to unlock secrets of aging and longevity.

Keywords:
animal modelsavian agingbiogerontologybirdserythrocytesfree radical hypothesisgerosciencelifespanoxidative damagesenescence

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Area of Science:

  • Geroscience
  • Comparative Biology
  • Molecular Biology

Background:

  • Avian species display exceptionally slow aging and long lifespans.
  • Previous research focused on oxidative stress and telomere dynamics in avian aging.
  • Limited understanding of the molecular mechanisms behind avian longevity.

Purpose of the Study:

  • To review recent advancements in avian aging research.
  • To highlight the utility of avian models in understanding aging processes.
  • To explore novel approaches, including omics, for studying avian longevity.

Main Methods:

  • Analysis of newer studies utilizing cell-based and whole-animal approaches.
  • Review of research on age-related neural function, including sensory changes and song maintenance.
  • Incorporation of findings from whole-genome and other omics methodologies.

Main Results:

  • Birds show enhanced resistance to oxidative damage and maintain cellular function with age.
  • Evidence suggests upregulated genetic signatures for cellular defenses, metabolism, and immunity in birds.
  • Avian models offer unique insights into aging, distinct from conventional models.

Conclusions:

  • Avian models are valuable for elucidating fundamental aging mechanisms.
  • Continued research, particularly in controlled laboratory settings, will advance geroscience.
  • Understanding avian longevity can provide novel insights into aging across taxa.