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Related Concept Videos

Aging01:26

Aging

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...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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...
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...
Drug Dosing: Geriatric Patients01:15

Drug Dosing: Geriatric Patients

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

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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...
Neurogenesis and Regeneration of Nervous Tissue01:15

Neurogenesis and Regeneration of Nervous Tissue

In the CNS, neurogenesis, the birth of new neurons from stem cells, is limited to the hippocampus in adults. In other regions of the brain and spinal cord, neurogenesis is almost non-existent due to inhibitory influences from neuroglia, especially oligodendrocytes, and the absence of growth-stimulating cues. The myelin produced by oligodendrocytes in the CNS inhibits neuronal regeneration. Furthermore, astrocytes proliferate rapidly after neuronal damage, forming scar tissue that physically...

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Related Experiment Video

Updated: Jul 3, 2026

Getting to Compliance in Forced Exercise in Rodents: A Critical Standard to Evaluate Exercise Impact in Aging-related Disorders and Disease
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Getting to Compliance in Forced Exercise in Rodents: A Critical Standard to Evaluate Exercise Impact in Aging-related Disorders and Disease

Published on: August 22, 2014

Neuroendocrinology and aging.

J Epelbaum1

  • 1Inserm UMR 894, Faculté de Médecine, Université Paris Descartes, Centre Paul Broca, Paris, France. jacques.epelbaum@broca.inserm.fr

Journal of Neuroendocrinology
|July 8, 2008
PubMed
Summary
This summary is machine-generated.

This review explores the neuroendocrinology of aging, tracing discoveries from early rejuvenation experiments to modern research on age-associated neuroendocrine changes. It highlights key findings and proposes future research directions.

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Area of Science:

  • Neuroendocrinology
  • Gerontology
  • Aging Research

Background:

  • Historical context of neuroendocrinology of aging, including early rejuvenation experiments.
  • Seminal research on the aging of the gonadotrophic axis from the 1960s.
  • Exploration of age-associated changes in neuroendocrine regulatory processes.

Observation:

  • Review of Brown-Sequard's and Steinach's early experiments on rejuvenation.
  • Analysis of Ascheim, Peng, and Meites' work on the gonadotrophic axis.
  • Examination of major age-associated changes in menopausal transition, andropause, somatopause, and adrenopause.

Findings:

  • Early experiments laid groundwork for understanding aging and neuroendocrine function.
  • The gonadotrophic axis undergoes significant age-related changes.
  • Multiple neuroendocrine axes (menopausal, andropause, somatopause, adrenopause) are affected by aging.

Implications:

  • Understanding neuroendocrine aging is crucial for addressing age-related decline.
  • Future research should consider the pleiotropic effects of neuroendocrine messengers.
  • This review provides a foundation for future investigations into neuroendocrine aging mechanisms.