Anxiety is a highly prevalent comorbidity in coronary artery disease (CAD) and confers increased risk of subsequent cardiac events and mortality. However, biological mechanisms of this relationship are not well understood. Ceramides are sphingolipids involved in inflammatory signaling and cell viability in the periphery and nervous system, and are implicated in pathophysiological mechanisms associated with anxiety. This study aimed to investigate relationships between plasma ceramide concentrations and anxiety symptomology as assessed by the Spielberger State-Trait Anxiety Inventory trait subscale (STAI-T) in CAD patients with linear regressions. High performance liquid chromatography coupled electrospray ionization tandem mass spectrometry was used to assay sphingolipid species. Plasma C22:0 ceramide (β=-0.232, p=0.018) concentrations and 8 other species of sphingolipids (SM18:0, SM20:1, C18:0, C20:0, C18:1, DHC22:0, LacC22:0, LacC24:1) were negatively correlated with STAI-T score when controlling for gender, BMI, and CES-D. Findings suggest specific sphingolipids to be potential markers for anxiety severity in CAD.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:OTU.1807/43316 |
| Date | 10 December 2013 |
| Creators | Rovinski, Randal |
| Contributors | Lanctôt, Krista |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | en_ca |
| Detected Language | English |
| Type | Thesis |
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