1. Functional MRI-based biomarkers of insomnia with objective short sleep duration phenotype.
- Author
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Ran B, Su E, He D, Guo Z, and Jiang B
- Subjects
- Humans, Male, Cross-Sectional Studies, Female, Middle Aged, Adult, Brain diagnostic imaging, Brain physiopathology, Sleep physiology, Sleep Duration, Sleep Initiation and Maintenance Disorders diagnostic imaging, Sleep Initiation and Maintenance Disorders physiopathology, Magnetic Resonance Imaging methods, Phenotype, Biomarkers blood
- Abstract
Background: Insomnia disorder with objective short sleep duration (ISS) phenotype is a more serious biological subtype than insomnia with objective normal sleep duration (INS) phenotype, and the neuroimaging data is helpful to understand the pathophysiology of the ISS phenotype. This study was to compare the amplitude of low-frequency fluctuation (ALFF), regional homogeneity (ReHo), and functional connectivity (FC) between the ISS phenotype and the INS phenotype., Methods: In this cross-sectional study, 55 patients with insomnia disorder were recruited, and 22 of them were defined as the ISS phenotype by the objective cardiopulmonary coupling (CPC) technique. The blood oxygen level-dependent (BOLD) sequences of all participants were obtained using the 3.0 T magnetic resonance imaging system. We analyzed and compared the ALFF, ReHo, and FC between the ISS phenotype and the INS phenotype. We also conducted Pearson's correlation analysis between significant neuroimaging biomarkers and the CPC parameters., Results: The differences were not significant in ALFF (P
FWE-corr >0.05) or ReHo (PFWE-corr >0.05) between the ISS phenotype and the INS phenotype. For the FC analysis, the ISS phenotype had a Hub-node of the left inferior occipital gyrus (IOG.L), with significantly decreased connections (p<0.001) in the bilateral occipital, parietal, and temporal regions. The significant FCs were closely related to sleep parameters., Conclusion: The left inferior occipital gyrus (IOG.L), as a Hub-node with decreased functional connections, may be a potential fMRI-based biomarker of the ISS phenotype., Competing Interests: Declaration of competing interest Declaration of competing interest: None. Declaration of generative AI in scientific writing: None., (Copyright © 2024 Elsevier B.V. All rights reserved.)- Published
- 2024
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