Associations of Arterial Stiffness With Cognitive Performance, and the Role of Microvascular Dysfunction: The

Sytze P Rensma1,2, Coen D A Stehouwer1,2, Martin P J Van Boxtel3,4

  • 1From the CARIM School for Cardiovascular Diseases (S.P.R., C.D.A.S., A.J.H.M.H., C.G.S., A.A.K., R.M.A.H., P.C.D., S.J.P.M.E., K.D.R., M.T.S., T.T.v.S.).

Insights

Stiffening of the aorta, not the carotid artery, is linked to poorer cognitive function. This link is partly explained by impaired microvascular function, highlighting its role in cognitive health.

Area of Science:

  • Cardiovascular Health
  • Neuroscience
  • Aging Research

Background:

  • Cognitive impairment mechanisms are unclear, but arterial stiffness and microvascular dysfunction are implicated.
  • Understanding these links is crucial for developing interventions to maintain cognitive function.

Purpose of the Study:

  • To investigate the association between arterial stiffness and cognitive performance.
  • To determine if microvascular dysfunction mediates the relationship between arterial stiffness and cognitive function.

Main Methods:

  • Cross-sectional analysis of 2544 participants from The Maastricht Study.
  • Assessed aortic and carotid stiffness using pulse wave velocity and distensibility.
  • Measured microvascular dysfunction via cerebral small vessel disease, retinal vasodilation, albuminuria, and plasma biomarkers.

Main Results:

  • Higher aortic stiffness correlated with lower cognitive function, independent of risk factors.
  • Higher aortic stiffness was associated with increased microvascular dysfunction.
  • Microvascular dysfunction partially mediated the effect of aortic stiffness on cognitive function, explaining 16.2% of the association.

Conclusions:

  • Aortic stiffness, not carotid stiffness, is independently associated with worse cognitive performance.
  • Microvascular dysfunction plays a significant role in the pathway linking aortic stiffness to cognitive decline.

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