Alzheimers Pathogenesis

Alzheimer's disease, a neurodegenerative condition, manifests through complex pathogenic processes. It primarily involves the accumulation of beta-amyloid plaques outside neurons and tau protein tangles inside neurons. These abnormalities disrupt neuronal communication, leading to cognitive decline and memory loss. The exact cause remains elusive, but genetic factors (like mutations in APP, PSEN1, PSEN2 genes) and environmental influences (such as lifestyle and cardiovascular health) play significant roles. Inflammation and oxidative stress further exacerbate neuronal damage. As the disease progresses, brain regions responsible for memory and cognitive function, like the hippocampus and cerebral cortex, shrink. Early detection through biomarkers and imaging techniques aids in managing symptoms and potentially slowing progression, highlighting ongoing research into treatments targeting these underlying mechanisms.