Liver Dysfunction as a Novel Player in Alzheimer's Progression: Looking Outside the Brain

Frontiers in Aging Neuroscience
Lisbell D EstradaJuan P Arab

Abstract

Alzheimer's disease (AD) afflicts an estimated 20 million people worldwide and is the fourth-leading cause of death in the developed world. The most common cause of dementia in older individuals, AD is characterized by neuropathologies including synaptic and neuronal degeneration, amyloid plaques, and neurofibrillary tangles (NTFs). Amyloid plaques are primarily composed of amyloid-beta peptide (Aβ), which accumulates in the brains of patients with AD. Further, small aggregates termed Aβ oligomers are implicated in the synaptic loss and neuronal degeneration underlying early cognitive impairments. Whether Aβ accumulates in part because of dysregulated clearance from the brain remains unclear. The flow of substances (e.g., nutrients, drugs, toxins) in and out of the brain is mediated by the blood-brain-barrier (BBB). The BBB exhibits impairment in AD patients and animal models. The effect of BBB impairment on Aβ, and whether BBB function is affected by non-neurological pathologies that impair peripheral clearance requires further investigation. In particular, impaired peripheral clearance is a feature of nonalcoholic fatty liver disease (NAFLD), a spectrum of liver disorders characterized by accumulation of fat in the liver acco...Continue Reading

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Aug 18, 2020·Journal of Alzheimer's Disease : JAD·Benjamin B TournierPhilippe Millet
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Oct 30, 2021·Life Sciences·Pariya KhodabakhshAbolhassan Ahmadiani

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Methods Mentioned

BETA
transgenic

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