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The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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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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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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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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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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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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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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Moonshots for aging.

Sandeep Kumar1, Timothy R Peterson1

  • 1Department of Internal Medicine, Division of Bone and Mineral Diseases, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, MO, USA.

Nutrition and Healthy Aging
|December 21, 2020
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This summary is machine-generated.

Aging research faces challenges, with few human therapies. This review proposes a "moonshot" approach, considering radical, non-medical strategies to boost human healthspan and lifespan.

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Area of Science:

  • Gerontology and Longevity Science
  • Biomedical Research
  • Future Health Strategies

Background:

  • Global population is aging, increasing demand for extended healthspan and lifespan.
  • Current aging research is costly, time-consuming, and lacks direct human healthspan/lifespan extension therapies.
  • Model organism longevity successes have not translated to feasible human interventions.

Purpose of the Study:

  • To propose a paradigm shift in aging research, moving beyond conventional approaches.
  • To stimulate discussion on radical, potentially non-medical, strategies for human longevity.
  • To explore a "moonshot" philosophy for accelerating breakthroughs in healthspan and lifespan.

Main Methods:

  • Review of existing aging research limitations.
  • Conceptual exploration of radical and unconventional interventions.
  • Analogical reasoning using the historical "moonshot" space program.

Main Results:

  • Identified significant limitations in current aging research methodologies and outcomes.
  • Proposed a "moonshot" philosophy as a potential catalyst for innovation.
  • Highlighted the need to consider non-medical interventions for enhancing human longevity.

Conclusions:

  • Current aging research paradigms are insufficient for significant human healthspan and lifespan extension.
  • A radical, "moonshot" approach, potentially encompassing non-medical strategies, is needed.
  • Further discussion and exploration of unconventional ideas are crucial for future aging research.