Abstract
Background and objective
Exploration of hypermetabolism in amyotrophic lateral sclerosis (ALS) with different ethnicities is needed to understand its metabolic implications for clinical management. We aimed to evaluate the features of hypermetabolism and investigate its association with clinical characteristics and prognosis of ALS in a prospective Chinese cohort.
Methods
This prospective study was conducted at Peking University Third Hospital, China from 2017 to 2020. 343 participants were enrolled initially. After strict screening, 147 matched health controls and 93 patients with ALS were eligible and underwent detailed clinical assessments. Disease severity and progression were evaluated using recognized scales. Metabolic assessments included body composition and metabolic index (MI) [hypermetabolism if MI ≥ 120.0%]. Patients were followed up every 6 months for survival analysis.
Results
Compared with controls, hypermetabolism was significantly more prevalent in ALS (p = 0.009). MI was consistently higher in ALS than controls (p = 0.009). Further correlation analysis showed that MI significantly decreased with disease progression, as graded by King’s College staging system (p < 0.001). MI was significantly correlated with fat-free mass and fat mass (p = 0.005 and 0.007). Survival analysis showed that hypermetabolism independently indicated a worse prognosis for ALS (HR = 1.020, CI = 1.004–1.036, p = 0.013).
Conclusion
A significant increase in the prevalence and degree of hypermetabolism was identified in ALS compared with strictly matched controls. Metabolic index, which is significantly associated with disease progression and body composition, is an independent prognostic indicator for a worse survival of ALS.
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Data availability statement
Data are available for collaborative studies with qualified investigators after inquiry.
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Acknowledgements
This study was funded by the National Natural Science Foundation of China (82001347, 81873484 and 82071426, Dr. D. Fan; 81974197, Dr. J. He), Clinical Core Program of Peking University Third Hospital (BYSY2018032; Dr J. He), and Clinical Cohort Construction Program of Peking University Third Hospital (BYSYDL2019002; Dr D. Fan). The authors are grateful for all the investigators and participants who contributed to the studies.
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Concept and design: J. He, J. Fu, W. Zhao, D. Fan. Acquisition, follow-up, or interpretation of data: All authors. Drafting of the manuscript: J. He, J. Fu. Critical revision of the manuscript for important intellectual content: D. Fan, W. Zhao, C. Ren. Statistical analysis: N. Li, J. He, J. Fu. Obtained funding: D. Fan, J. He. Administrative, technical, or material support: P. Liu, L. Chen, D. Li, L. Tang.
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The Research Ethics Committee of Peking University Third Hospital approved our study. This study was performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments. All participants gave their informed consent prior to their inclusion in the study.
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All authors have read, validated the accuracy of the data, and approved the final manuscript.
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He, J., Fu, J., Zhao, W. et al. Hypermetabolism associated with worse prognosis of amyotrophic lateral sclerosis. J Neurol 269, 1447–1455 (2022). https://doi.org/10.1007/s00415-021-10716-1
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DOI: https://doi.org/10.1007/s00415-021-10716-1