Interrelationship between Alzheimer's disease and cardiac dysfunction: the brain-heart continuum?

Area of Science:

• Neurology
• Cardiology
• Gerontology

Background:

• Dementia, a common elderly disorder, involves cognitive and memory decline.
• A strong association exists between dementia and heart failure.
• Alzheimer's disease (AD), a type of dementia, can impair cardiovascular function, particularly diastolic function.

Purpose of the Study:

• To review current literature on dementia, AD, and cardiovascular diseases.
• To discuss the bidirectional relationship between dementia and heart dysfunction.
• To highlight the public health implications of co-occurring dementia and cardiovascular diseases.

Main Methods:

• Literature review of clinical and epidemiological evidence.
• Analysis of the pathological mechanisms linking dementia and cardiac anomalies.
• Discussion of risk factors, including atrial fibrillation and heart failure.

Main Results:

• Cardiac dysfunction, such as reduced cardiac pump function, leads to cerebral hypoperfusion and neuronal injury.
• AD pathology, including amyloid-β aggregation, may contribute to cardiac abnormalities.
• Impaired cardiac function exacerbates dementia, creating a detrimental cycle.

Conclusions:

• The co-occurrence of dementia and cardiovascular diseases poses a significant public health threat.
• Further research is needed to fully elucidate the causal relationship and develop effective interventions.
• Individuals with cardiac conditions face a higher risk of cognitive decline and dementia.