Abstract
The pathophysiological processes of dementia and cognitive impairment are linked
to advanced glycation end products (AGEs) and their receptor (RAGE).The
neurofibrillary tangles (NFTs) of abnormally hyperphosphorylated tau protein and
senile plaques (SPs), which are brought on by amyloid beta (Aβ)
deposition, are the hallmarks of Alzheimer’s disease (AD), a progressive
neurodegenerative condition. Advanced glycation end products that are produced
as a result of vascular dysfunction are bound by the receptor for advanced
glycation end products (RAGE). Dementia and cognitive impairment could develop
when RAGE binds to Aβ and produces reactive oxygen species, aggravating
Aβ buildup and ultimately resulting in SPs and NFTs. RAGE could be a
more powerful biomarker than Aβ because it is implicated in early AD.
The resident immune cells in the brain known as microglia are essential for
healthy brain function. Microglia is prominent in the amyloid plaques’
outside border as well as their central region in Alzheimer’s disease.
Microglial cells, in the opinion of some authors, actively contribute to the
formation of amyloid plaques. In this review, we first discuss the early
diagnosis of dementia and cognitive impairment, and then detail the interaction
between RAGE and Aβ and Tau that is necessary to cause dementia and
cognitive impairment pathology, and it is anticipated that the creation of RAGE
probes will help in the diagnosis and treatment of dementia and cognitive
impairment.
Key words
AGE - dementia - cognitive impairment - aβ - tau - senile plaques