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Related Concept Videos

Aging01:26

Aging

673
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

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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Changes in the Appendicular Skeleton with Age01:09

Changes in the Appendicular Skeleton with Age

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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

202
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...
202
Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

692
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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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution01:00

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Distribution

250
Drug distribution in the human body is influenced by several factors, including plasma protein concentration, body composition, blood flow, tissue-protein concentration, and tissue fluid pH. Among these, changes in plasma protein concentration and body composition due to aging significantly affect how drugs are distributed within the body. Specifically, aging is associated with a decrease in albumin levels by about 10% and an increase in α1-acid glycoprotein levels. These alterations are...
250

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Related Experiment Video

Updated: Jan 29, 2026

Modeling Age-Associated Neurodegenerative Diseases in Caenorhabditis elegans
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Engineering Immune Cell to Counteract Aging and Aging-Associated Diseases.

Jianhua Guo1, Lanjie Lei1, Ying Jin2

  • 1Key lab of Artificial Organs and Computational Medicine, Institute of Translational Medicine, Zhejiang Shuren University, Hangzhou, Zhejiang, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 28, 2026
PubMed
Summary

Cellular immunotherapies show promise for combating aging by leveraging the immune system to clear senescent cells and reduce inflammation. Future advancements aim to personalize these anti-aging treatments for extended healthspan.

Keywords:
agingaging‐associated pathologiescellular immunotherapiesclinical translationmechanism exploration

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Area of Science:

  • Immunology
  • Gerontology
  • Biotechnology

Background:

  • Aging and associated diseases pose significant public health challenges.
  • Current anti-aging strategies using small molecules have limited clinical success.
  • Cellular immunotherapies, particularly chimeric antigen receptor (CAR)-engineered cells, show potential beyond cancer treatment.

Purpose of the Study:

  • To review the immune system's role in counteracting aging.
  • To synthesize principles of immune cell-based anti-aging therapies.
  • To analyze current preclinical and clinical studies in this field.

Main Methods:

  • Review of scientific literature on immune system function in aging.
  • Analysis of preclinical and clinical studies of cellular immunotherapies for aging.
  • Synthesis of challenges and future directions in the field.

Main Results:

  • The immune system naturally clears senescent cells, reduces inflammation, and promotes regeneration.
  • Cellular immunotherapies offer a novel approach to modulating aging processes.
  • Key challenges include target specificity, immunosuppressive environments, and cell variability.

Conclusions:

  • Cellular immunotherapies hold transformative potential for modulating aging and extending healthspan.
  • Multidisciplinary collaboration and technologies like AI are crucial for personalized anti-aging interventions.
  • This approach aligns with the advancement of precision medicine.