Abstract
Background
Restless legs syndrome (RLS) is a neuromotor disorder, and dialysis patients are more likely to develop RLS. RLS often causes sleep disorders, anxiety and depression in patients. It will increase the risk of death and severely affect the life of patients. At present, RLS has not received enough recognition and attention, and the misdiagnosis rate can reach more than 10%.
Methods
The discovery set selected 30 peritoneal dialysis (PD) patients and 27 peritoneal dialysis patients with RLS (PD-RLS). A metabolomics method based on ultra performance liquid chromatography tandem quadrupole time-of-flight mass spectrometric method (UPLC-Q-TOF/MS) was used to analyze the differential metabolites of the two groups. 51 PD patients and 51 PD-RLS patients were included in the validation set. The receiver operating characteristic (ROC) analysis was used to evaluate the early diagnostic biomarkers, and the correlation between the differential metabolites and laboratory test indexes was analyzed to explore the biological function of the differential metabolites.
Results
Through the integrated analysis, four metabolites can be used as markers for the diagnosis of PD-RLS, including Hippuric acid, Phenylacetylglutamine, N,N,N-Trimethyl-L-alanyl-L-proline betaine and Threonic acid. Through ROC analysis, it is found that they can be used as a metabolic biomarker panel, and the area under the curve of this combination is more than 0.9, indicating that the panel has good diagnostic and predictive ability.
Conclusion
Metabolomics based on UPLC-Q-TOF/MS technology can effectively identify the potential biomarkers, and provide a theoretical basis for the early diagnosis, prevention and treatment on PD-RLS.
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This work was supported by the National Natural Science Foundation of China (No. 81803961).
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All authors contributed specific text and/or figure content to the manuscript. All authors reviewed the manuscript. BY and HQY wrote the main manuscript text. LLS and HTY provided guidance, supervision and suggestions for this study.
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Yang, B., Yin, H., Wang, J. et al. A metabolic biomarker panel of restless legs syndrome in peritoneal dialysis patients. Metabolomics 18, 79 (2022). https://doi.org/10.1007/s11306-022-01938-z
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DOI: https://doi.org/10.1007/s11306-022-01938-z