Development of capillary dysfunction in Alzheimer's disease.

Area of Science:

• Neuroscience
• Pathology
• Gerontology

Background:

• Alzheimer's disease (AD) is a leading cause of cognitive decline in older adults.
• Neurodegeneration, particularly in the hippocampus, underlies AD's pathology.
• Existing hypotheses fail to fully explain early AD pathogenesis.

Purpose of the Study:

• To review existing data on microcirculatory disorders in the brain.
• To investigate the role of hippocampal and temporal lobe capillary dysfunction in AD.
• To propose microcirculation as a potential initiating factor in neurodegeneration.

Main Methods:

• Literature review and data analysis.
• Focus on pathomorphological and functional aspects of brain microcirculation.
• Examination of studies related to the hippocampus and temporal lobes.

Main Results:

• Analysis of data suggests microcirculatory disorders in brain capillaries.
• These disorders are observed in the hippocampus and temporal lobes.
• Evidence points to microvascular changes as a potential trigger for neurodegeneration.

Conclusions:

• Microcirculatory dysfunction in brain capillaries may initiate Alzheimer's disease.
• This challenges current hypotheses by proposing an early pathogenetic mechanism.
• Further research into neurovascular interactions is warranted for understanding AD.