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Heart and Brain: Complex Relationships for Left Ventricular Dysfunction
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DOI：10.1007/s11886-020-01318-w.png)
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摘要
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Purpose of Review This review summarizes the evidence for the established vascular/hypoperfusion model and explores the new hypothesis that configures the heart/brain axis as an organ system where similar pathogenic mechanisms exploit physiological and pathological changes. Recent Findings Although associated by common risk factors, similar epidemiological stratification and common triggers (including inflammation, oxidative stress, and hypoxia), heart failure and Alzheimer's disease have been, for long time, viewed as pathogenically separate illnesses. The silos began to be broken down with the awareness that vascular dysfunction, and loss of cardiac perfusion pump power, trigger biochemical changes, contributing to the typical hallmark of Alzheimer's disease (AD)-the accumulation of A beta plaques and hyperphosphorylated Tau tangles. Compromised blood flow to the brain becomes the paradigm for the heart-to-head connection. Compelling evidence of common genetic variants, biochemical characteristics, and the accumulation of A beta outside the brain suggests a common pathogenesis for heart failure (HF) and AD. These new findings represent just the beginning of the understanding the complex connection between AD and HF requiring further studies and interdisciplinary approaches. Altogether, the current evidence briefly summarized in this review, highlight a closer and complex relationship between heart failure and Alzheimer's that goes beyond the vascular/perfusion hypothesis. Genetic and biochemical evidence begin to suggest common pathogenic mechanisms between the two diseases involving a systemic defect in the folding of protein or a seeding at distance of the misfolded proteins from one organ to the other.
Keyword:
Heart failure
Cardiomyopathy
Alzheimer's disease
A beta
Vascular dementia
Protein folding
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