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Related Concept Videos

Aging01:26

Aging

1.0K
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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Drug Dosing: Geriatric Patients01:15

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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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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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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Metabolism

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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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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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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 Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
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Emerging programmed aging mechanisms and their medical implications.

Theodore C Goldsmith1

  • 1Azinet LLC, Box 239, Crownsville, MD 21032, USA.

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This summary is machine-generated.

Programmed aging in humans, once theoretical, now has strong evidence and funding. This shift impacts how we research and treat age-related diseases by focusing on new programmed aging mechanisms.

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Area of Science:

  • Gerontology
  • Biomedical Research
  • Aging Mechanisms

Background:

  • Historically, programmed aging in humans was deemed impossible.
  • Medical research on age-related diseases relied on non-programmed aging theories.
  • Recent advancements provide a strong theoretical basis for programmed aging in mammals.

Purpose of the Study:

  • To explore novel disease mechanism concepts arising from programmed aging theories.
  • To analyze the impact of programmed aging on medical research funding and methodologies.
  • To bridge the gap between theoretical programmed aging and practical age-related disease research.

Main Methods:

  • Theoretical analysis of programmed aging mechanisms.
  • Review of emerging research trends and funding allocations.
  • Conceptualization of new disease models based on programmed aging.

Main Results:

  • Programmed aging theories necessitate a paradigm shift in understanding age-related diseases.
  • New research avenues are emerging, focusing on the biological underpinnings of aging.
  • Significant shifts in research funding and experimental approaches are anticipated.

Conclusions:

  • The concept of programmed aging is revolutionizing gerontology and age-related disease research.
  • Understanding programmed aging mechanisms is crucial for future medical advancements.
  • This paradigm shift will reshape the landscape of biomedical research and therapeutic development.