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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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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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Updated: Jun 7, 2025

3D Modeling of the Lateral Ventricles and Histological Characterization of Periventricular Tissue in Humans and Mouse
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White matter aging and its impact on brain function.

Janos Groh1, Mikael Simons2

  • 1Institute of Neuronal Cell Biology, Technical University Munich, Munich, Germany; German Center for Neurodegenerative Diseases (DZNE), Munich, Germany; Munich Cluster of Systems Neurology (SyNergy), Munich, Germany.

Neuron
|November 14, 2024
PubMed
Summary
This summary is machine-generated.

Aging impairs white matter integrity, leading to cognitive decline. Understanding these changes is key to preventing neurodegenerative disorders and promoting brain health.

Keywords:
agingmyelinneuroinflammationwhite matter

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Area of Science:

  • Neuroscience
  • Aging Research
  • Neurobiology

Background:

  • Aging detrimentally affects white matter, causing volume reduction and compromised myelinated axon integrity.
  • Increased white matter hyperintensities are linked to cognitive decline and neurological disabilities.
  • Deterioration and reduced regeneration of myelin accelerate neurodegenerative disorders with age.

Purpose of the Study:

  • To discuss structural alterations in white matter during aging.
  • To examine the cellular and molecular mechanisms driving age-related white matter changes.
  • To highlight how white matter disruption may trigger inflammation and neural damage.

Main Methods:

  • Review of existing literature on white matter aging.
  • Analysis of cellular and molecular changes in aging white matter.
  • Discussion of the inflammatory cycle in neural damage.

Main Results:

  • Aging leads to reduced white matter volume and structural integrity.
  • Myelin deterioration and impaired regeneration are characteristic of aging.
  • White matter changes are associated with cognitive decline and neurological issues.

Conclusions:

  • Understanding age-related white matter changes is crucial for disease prevention.
  • Progressive white matter disruption can initiate a cycle of inflammation and neural damage.
  • Targeting these mechanisms may offer strategies for mitigating age-related neurological decline.