Early Atherosclerotic Inflammatory Pathways in Children with Obstructive Sleep Apnea
- PMID: 34450122
- PMCID: PMC9020582
- DOI: 10.1016/j.jpeds.2021.08.031
Early Atherosclerotic Inflammatory Pathways in Children with Obstructive Sleep Apnea
Abstract
Objective: To evaluate structural and functional carotid changes and inflammatory profiles in children with obstructive sleep apnea (OSA) and healthy controls.
Study design: Patients with OSA and matched controls (ages 5-13 years) were recruited. Proinflammatory cytokines and acute phase reactants were measured at 6:00 p.m. Common carotid artery measures were determined using ultrasound. Confirmatory factor analysis was used to determine subgroups of cytokines and their effects on carotid measures.
Results: Ninety-six patients participated (53 healthy controls, 43 patients with OSA). OSA was associated with increased proinflammatory cytokines (cluster of differentiation-40 ligand [CD40-L], interleukin [IL]-6, and IL-8) and high sensitivity C-reactive protein (P < .05 for all). One cytokine subgroup (IL-6 and IL-8) was negatively associated with markers of carotid function, indicating reduced arterial distensibility and increased stiffness (P < .05 for 3 ultrasound measures); and tumor necrosis factor-α had an opposing effect on carotid function compared with this cytokine subgroup (P < .05 for 2 ultrasound measures). Linear regression demonstrated significant associations between and tumor necrosis factor- α and 2 measures of carotid function (P < .05 for each). Children with OSA did not have functional or structural carotid changes compared with controls.
Conclusion: OSA was not directly associated with structural and functional carotid changes but was associated with upregulation of key proinflammatory cytokines (sCD40-L, IL-6, and IL-8). Together, IL-6 and IL-8 were associated with changes in carotid function. Longitudinal studies are needed to demonstrate that the inflammatory milieu observed in our population is a precursor of atherosclerosis in children.
Keywords: cardiovascular disease; carotid intima media thickness; inflammation; obstructive sleep apnea syndrome; pediatric OSA.
Copyright © 2021 Elsevier Inc. All rights reserved.
Conflict of interest statement
The authors declare no conflicts of interest.
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