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Related Concept Videos

Aging01:26

Aging

179
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...
179

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Related Experiment Video

Updated: Sep 9, 2025

Immunofluorescence Staining Using IBA1 and TMEM119 for Microglial Density, Morphology and Peripheral Myeloid Cell Infiltration Analysis in Mouse Brain
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Immunofluorescence Staining Using IBA1 and TMEM119 for Microglial Density, Morphology and Peripheral Myeloid Cell Infiltration Analysis in Mouse Brain

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[Age-related brain functional changes and microglia].

Yoki Nakamura1, Kazue Hisaoka-Nakashima1, Norimitsu Morioka1

  • 1Department of Pharmacology, Graduate School of Biomedical and Health Sciences, Hiroshima University.

Nihon Yakurigaku Zasshi. Folia Pharmacologica Japonica
|August 31, 2025
PubMed
Summary
This summary is machine-generated.

Aging alters brain microglia, the immune cells of the brain. These changes in microglia subpopulations and function may contribute to age-related cognitive decline and memory loss.

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Area of Science:

  • Neuroscience
  • Immunology
  • Aging Research

Background:

  • Age-related cognitive decline is common but varies individually.
  • Microglia, brain's immune cells, are vital for central nervous system homeostasis.
  • Microglial morphology and function change significantly with age.

Purpose of the Study:

  • To review the impact of aging on microglia.
  • To explore the association between microglial changes and brain function alterations.
  • To present current findings on aging microglia and cognitive function.

Main Methods:

  • Review of existing literature on microglia and aging.
  • Analysis of RNA sequencing data on microglial subpopulations.
  • Examination of studies on microglial morphology and function changes over time.

Main Results:

  • Microglia exhibit significant morphological changes with age.
  • Aging leads to diverse microglial subpopulations, including increased white matter-associated microglia (WAM) and interferon-response microglia (IRM).
  • These aging-induced microglial alterations may impair brain homeostasis.

Conclusions:

  • Aging profoundly affects microglia's composition, morphology, and function.
  • Changes in microglia are linked to age-related cognitive decline.
  • Further research into aging microglia is crucial for understanding and mitigating cognitive impairment.