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Platelet-activating factors are associated with cognitive deficits in depressed coronary artery disease patients: a

Graham Mazereeuw, Nathan Herrmann, Hongbin Xu

  • 1Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Room FG08, Toronto, ON M4N 3M5, Canada. Krista.Lanctot@sunnybrook.ca.

Journal of Neuroinflammation
|July 6, 2014
PubMed

Insights

Certain platelet-activating factors (PAFs) are linked to cognitive decline in coronary artery disease (CAD) patients, especially those with depression. Specific PAFs correlate with poorer cognitive performance, while one may offer a protective effect.

Area of Science:

  • Lipidomics
  • Neuroscience
  • Cardiology

Background:

  • Coronary artery disease (CAD) patients face heightened risk of cognitive decline, particularly when experiencing major depression.
  • Inflammatory processes, common in CAD and depression, are implicated in neurodegeneration and cognitive impairment.
  • Platelet-activating factors (PAFs) are emerging as critical lipid mediators potentially linking inflammation, neurodegeneration, and cognitive decline in CAD.

Purpose of the Study:

  • To investigate the association between various platelet-activating factors (PAFs) and cognitive performance in patients with coronary artery disease (CAD).
  • To explore these relationships further in a subgroup of CAD patients with major depression.

Main Methods:

  • Cross-sectional study involving 24 CAD patients (70.8% male, mean age 60.3 years).
  • Cognitive performance assessed using a standardized battery, with global cognitive performance derived from summary z scores.
  • Plasma PAF levels analyzed using electrospray ionization mass spectrometry (precursor ion scan).

Main Results:

  • Elevated PAF PC(O-18:0/2:0) abundance correlated with poorer global cognitive performance in CAD patients (r=-0.45, P=0.03).
  • In the major depressed subgroup, PAF PC(O-18:0/2:0), PC(O-16:0/2:0), and lyso-PAF PC(O-16:0/0:0) were associated with poorer cognitive performance.
  • Higher PAF PC(O-19:5/2:0) levels were linked to better global cognitive performance, suggesting a potential compensatory role.

Conclusions:

  • Specific PAFs show associations with global cognitive performance in CAD patients.
  • These associations appear stronger in CAD patients with major depression.
  • Further research is needed to confirm these preliminary findings and elucidate the role of PAFs in cognitive decline within this population.
Abstract

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