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Related Concept Videos

The Effect of Aging on Tissues01:19

The Effect of Aging on Tissues

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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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...
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.
Cellular Clock Theory
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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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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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Related Experiment Video

Updated: Jun 17, 2026

A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
08:02

A Mouse Ear Model for Allergic Contact Dermatitis Evaluation

Published on: March 24, 2023

Aging and contact dermatitis: a review.

Sharon E Jacob1, Mohamed L Elsaie, Mari Paz Castanedo-Tardan

  • 1Department of Dermatology and Cutaneous Surgery, Miller School of Medicine, Miami, FL 33136, USA. sjacob@contactderm.net

Current Aging Science
|December 22, 2009
PubMed
Summary
This summary is machine-generated.

Aging skin exhibits distinct characteristics, impacting how conditions like contact dermatitis present in older adults. Recognizing these differences is crucial for timely and effective clinical management in the geriatric population.

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A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
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Published on: September 26, 2022

Area of Science:

  • Dermatology
  • Gerontology
  • Clinical Medicine

Background:

  • The global population is aging, increasing the prevalence of age-related health conditions.
  • Skin aging involves pathophysiologic changes that alter its function and appearance.
  • Understanding age-related skin differences is vital for accurate clinical diagnosis.

Purpose of the Study:

  • To highlight the altered presentation of contact dermatitis in the geriatric population.
  • To emphasize the importance of recognizing delayed and prolonged reactions in aged skin.
  • To underscore the need for timely diagnosis and treatment of contact dermatitis in elderly patients.

Main Methods:

  • This abstract is based on a review of clinical presentations and pathophysiologic changes in aging skin.
  • No specific experimental methods were detailed in the provided abstract.

Main Results:

  • Contact dermatitis can present with delayed onset and prolonged duration in aged skin.
  • These altered reactions are attributed to the pathophysiologic changes associated with skin aging.

Conclusions:

  • Clinicians must be aware of the unique presentation of contact dermatitis in the elderly.
  • Prompt recognition and management are essential for effective treatment of contact dermatitis in geriatric patients.
  • Understanding aging skin pathophysiology is key to addressing dermatological conditions in older adults.