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Summary
This summary is machine-generated.

High cardiovascular risk negatively impacts the Allostatic-Interoceptive Network (AIN) structure and function in dementia patients. Managing cardiovascular health is crucial for preserving brain integrity and potentially slowing neurodegeneration.

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Area of Science:

  • Neuroscience
  • Cardiovascular Health
  • Dementia Research

Background:

  • Cardiovascular risk factors are linked to allostatic-interoception and dementia risk.
  • The impact of cardiovascular risk on brain networks like the Allostatic-Interoceptive Network (AIN) in neurodegenerative diseases remains unclear.
  • This study investigates the relationship between cardiovascular risk and AIN in frontotemporal lobar degeneration (FTLD) and Alzheimer's disease (AD).

Purpose of the Study:

  • To examine the association between cardiovascular risk and the structural and functional integrity of the Allostatic-Interoceptive Network (AIN).
  • To explore disease-specific patterns of AIN vulnerability in frontotemporal lobar degeneration (FTLD) and Alzheimer's disease (AD).

Main Methods:

  • Recruited 1501 participants (304 FTLD, 512 AD, 685 controls) from the ReDLat consortium.
  • Calculated a cardiovascular risk score based on age, sex, diabetes, hypertension, blood pressure, BMI, and smoking status.
  • Assessed gray matter integrity and functional connectivity within the AIN in matched patient-control groups.

Main Results:

  • Higher cardiovascular risk correlated with reduced AIN structural integrity and functional connectivity in both FTLD and AD.
  • FTLD patients exhibited widespread structural and functional disruptions across the AIN.
  • AD patients showed prominent AIN structural reductions, with functional connectivity mainly in the hippocampus and orbitofrontal regions.

Conclusions:

  • Cardiovascular risk factors adversely affect AIN structure and function, with distinct patterns in FTLD and AD.
  • Integrating cardiovascular health management is vital for brain integrity in dementia.
  • Further research is needed on longitudinal effects and the exacerbation of neurodegeneration by cardiovascular risk.