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Related Concept Videos

Aging01:26

Aging

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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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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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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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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

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Geriatric patients show significant variation in how their bodies process medications, which can change how effective and safe treatments are. The liver is the primary organ where drug metabolism occurs, involving two main types of chemical reactions: phase I and II. Phase I metabolism is driven by the cytochrome P450 enzyme system, which includes key types such as CYP3A, CYP2D6, and CYP2C9. Research indicates that while aging doesn't notably alter the levels or activity of these enzymes, it...
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Possible Interventions to Modify Aging.

Giacinto Libertini1, Nicola Ferrara

  • 1Federico II University, Department of Translational Medical Sciences, Naples, 80138, Italy. giacinto.libertini@tin.it.

Biochemistry. Biokhimiia
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Summary
This summary is machine-generated.

Aging may be programmed and influenced by natural selection, potentially controlled via telomere mechanisms. This research explores interventions to manage age-related diseases and achieve negligible senescence.

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Area of Science:

  • Gerontology and evolutionary biology
  • Molecular biology and genetics
  • Neuroscience and ophthalmology

Background:

  • Aging is viewed as a programmed process favored by natural selection at a supra-individual level.
  • The telomere theory proposes that aging mechanisms involve the subtelomere-telomere-telomerase system.
  • Significant technical and ethical considerations surround aging research.

Purpose of the Study:

  • To review aging mechanisms and explore potential interventions.
  • To address disabling age-related conditions like Alzheimer's, Parkinson's, and macular degeneration.
  • To outline a path toward controlling aging and achieving negligible senescence.

Main Methods:

  • Review of existing literature on programmed aging and telomere theory.
  • Analysis of mechanisms underlying aging and age-related diseases.
  • Conceptualization of intervention strategies for aging control.

Main Results:

  • Aging can be interpreted as a programmed function with supra-individual selective advantages.
  • The subtelomere-telomere-telomerase system is implicated in aging mechanisms.
  • Interventions targeting specific age-related diseases are conceivable.

Conclusions:

  • Controlling specific age-related diseases is a potential first step toward broader aging control.
  • Achieving a state of negligible senescence may be a long-term goal.
  • A phased approach to developing aging interventions is described.