Circulating metabolites associated with objectively measured sleep duration and sleep variability in overweight/obese participants: A metabolomics approach within the SATIN study

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Objectives: To investigate the associations of circulating metabolites with sleep duration and sleep variability. We also assessed the ability of metabolites to discriminate between sleep duration and sleep variability categories.

Methods: Cross-sectional analysis of 205 participants with overweight/obesity from the "Satiety Innovation" (SATIN) study. A targeted metabolite profiling (n = 159 metabolites) approach was applied using three different platforms (NMR, LC-MS, GC-MS). Associations between circulating metabolite concentrations and accelerometer-derived sleep duration and variability in sleep duration were assessed using elastic-net regression analysis. Ten-fold cross-validation was used to estimate the discriminative accuracy of metabolites for sleep duration, and sleep variability categories.

Results: A metabolite profile, including acyl-carnitines (C11:0/C5:1-DC/iso-C11:0, 2-M-C4:1/3-M-C4:1, C4:0); sphingomyelins (42:1, 33:1); glycerol; stearic acid; 2- and 3- hydroxyl-butyric acid; docosahexaenoic acid; serotonin; and phosphatidylcholine (34:2), was significantly associated with high sleep duration (4th plus 5th quintile). Ten metabolites, including acyl-carnitines (C18:1, C7:0, C6-OH); phosphatidylcholine (40:6, 37:4, 42:5); lyso-phosphatidylcholine, (20:1); sucrose; glutamic acid, and triacylglycerol (52:4), were significantly associated with high sleep variability (4th plus 5th quintile). The area under the curve was 0.69 (95% CI 0.62-0.75), and 0.63 (95% CI 0.53-0.72), in the multi-metabolite score for high sleep duration, and sleep variability, respectively. The variance in sleep duration explained by metabolites was 7%. No metabolites were selected for prediction of sleep variability (continuous).

Conclusion: A small set of metabolites within distinct biochemical pathways were associated with high sleep duration and sleep variability. These metabolites appeared to moderately discriminate sleep duration and sleep variability categories.

Udgave nummer5
Antal sider8
StatusUdgivet - 2019

Bibliografisk note

CURIS 2019 NEXS 086

ID: 213152890