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Related Concept Videos

Aging01:26

Aging

139
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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Longitudinal Research02:20

Longitudinal Research

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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Mitochondria01:37

Mitochondria

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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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Obtaining Specimens with Slowed, Accelerated and Reversed Aging in the Honey Bee Model
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Experimental models for ageing research.

Luana Toniolo1, Giuseppe Sirago2, Emiliana Giacomello3

  • 1Laboratory of Muscle Biophysics, Department of Biomedical Sciences, University of Padova, Padova, Italy. luana.toniolo@unipd.it.

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Summary

Aging results from cellular mechanism failures, impacting health and increasing age-related diseases. This review explores various experimental models used to study aging and find countermeasures.

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Area of Science:

  • Gerontology and cellular biology
  • Investigating the biological mechanisms of aging

Background:

  • Aging is characterized by nine hallmarks, including genomic instability and cellular senescence.
  • These hallmarks are present in normal aging, and their manipulation affects lifespan.
  • The aging population is increasing, driving the need for anti-aging interventions.

Purpose of the Study:

  • To review experimental models used in aging research.
  • To highlight the strengths and limitations of different models.
  • To inform the selection of appropriate models for studying aging and developing countermeasures.

Main Methods:

  • Review of in vitro, animal, and human models.
  • Analysis of model characteristics relevant to aging research.
  • Discussion of model applicability in laboratory and translational studies.

Main Results:

  • In vitro, animal, and human models are crucial for aging research.
  • Each model type has unique advantages and disadvantages.
  • Understanding model limitations is key for accurate research findings.

Conclusions:

  • Experimental models are essential for studying the complex process of aging.
  • Careful selection and interpretation of model data are vital.
  • Further research using diverse models will accelerate the discovery of aging countermeasures.