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Platelet activating factors are associated with depressive symptoms in coronary artery disease patients: a hypothesis-generating study

Authors Mazereeuw G, Herrmann N, Xu H, Blanchard A, Figeys D, Oh P, Bennett S, Lanctôt KL

Received 22 April 2015

Accepted for publication 6 June 2015

Published 4 September 2015 Volume 2015:11 Pages 2309—2314


Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Xiang Mou

Peer reviewer comments 3

Editor who approved publication: Dr Roger Pinder

Graham Mazereeuw,1,2,4 Nathan Herrmann,1,5 Hongbin Xu,3,4 Alexandre P Blanchard,3,4 Daniel Figeys,3,4 Paul I Oh,6 Steffany AL Bennett,3,4 Krista L Lanctôt1,2,4–6

1Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, ON, 2Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada; 3Ottawa Institute of Systems Biology and Neural Regeneration Laboratory, Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, 4CIHR  Training Program in Neurodegenerative Lipidomics, Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, 5Department of Psychiatry, University of Toronto, Toronto, ON, Canada; 6UHN Toronto Rehabilitation Institute, Toronto, ON, Canada

Introduction: Depression is a frequent complication of coronary artery disease (CAD) with an unknown etiology. Platelet activating factor (PAF) lipids, which are associated with CAD, have recently been linked with novel proposed etiopathological mechanisms for depression such as inflammation, oxidative/nitrosative stress, and vascular endothelial dysfunction.
Methods and results: This hypothesis-generating study investigated the relationships between various PAF species and depressive symptoms in 26 CAD patients (age: 60.6±9.2 years, 69% male, mean Hamilton Depression Rating Scale [HAM-D] score: 11.8±5.2, HAM-D range: 3–20). Plasma PAF analyses were performed using high performance liquid chromatography electrospray ionization mass spectrometry in precursor ion scan. Significant associations between depressive symptom severity (HAM-D score) and a greater plasma abundance of the PAFs phosphocholine (PC) PC(O-12:0/2:0) (r=0.49, P=0.01), PC(O-14:1/2:0) (r=0.43, P=0.03), PC(O-17:3/2:0) (r=0.44, P=0.04), and PC(O-18:3/2:0) (r=0.50, P=0.01) were observed. Associations between those PAFs and HAM-D score persisted after adjusting for age and sex.
Conclusion: These preliminary findings support the exploration of the PAF lipidome for depressive symptom biomarkers in CAD patients. Patients were recruited as part of the following clinical trial: NCT00981383.

Keywords: depression, lipidomics, cardiovascular, inflammation, oxidative stress, biomarker, vascular depression

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