Aging of cerebral white matter

Area of Science:

• Neuroscience
• Aging Research
• Neurobiology

Background:

• White matter (WM), composed of myelinated axons, is vital for efficient brain communication.
• Aging affects WM similarly to gray matter, potentially causing cognitive decline.
• Aged WM is more vulnerable to neurological conditions like stroke and neurodegeneration.

Purpose of the Study:

• To review structural and functional changes in aging white matter.
• To explore the mechanisms underlying age-related WM alterations.
• To discuss the influence of aging WM on the progression of brain disorders.

Main Methods:

• Literature review of studies on white matter aging.
• Analysis of structural and functional changes in aged white matter.
• Synthesis of evidence on underlying mechanisms and disease associations.

Main Results:

• Aging induces significant structural and functional alterations in white matter.
• These changes are linked to neurobehavioral and cognitive impairments in the elderly.
• Aged white matter plays a role in the pathogenesis of stroke, TBI, and neurodegenerative diseases.

Conclusions:

• Age-related white matter changes contribute to cognitive decline and neurological disease progression.
• White matter is a potential therapeutic target for neurological and psychiatric conditions.
• Further research into white matter physiology is warranted.