Abstract
Background/Objective
Several body components are known to be associated with non-alcoholic fatty liver disease (NAFLD) in children. However, the relative contributions of soft tissue mass components as risk or protective factors of NAFLD are largely unknown because measurements of these components are often highly correlated. Therefore, we aimed to estimate levels of association between soft tissue mass components and NAFLD.
Subjects/Methods
We collected the medical records of 555 Chinese children (aged 3–18 years). Five mutually exclusive and exhaustive components of soft tissue mass were measured using dual energy X-ray absorptiometry. NAFLD was diagnosed with abdominal B-ultrasound scan. We fit Dirichlet regression and multivariate linear regression models wherein age and NAFLD were used as predictors of the proportional measurements of soft tissue mass components.
Results
The proportion of android fat was significantly higher in children with NAFLD than in those without NAFLD (ratio of proportions ranged from 1.18 to 1.30), whereas proportions of trunk lean and limb lean were significantly lower (ratio of proportions ranged from 0.87 to 0.92 for trunk lean and from 0.82 to 0.91 for limb lean). The proportion of gynoid fat was slightly higher in boys with NAFLD than in those without NAFLD (ratio = 1.05), but this proportion was not significantly higher in girls. The association between the proportion of android fat and NAFLD appeared to be somewhat greater than the associations between proportions of trunk lean or limb lean components and NAFLD.
Conclusion
Our findings suggest that lowering fat mass and increasing lean mass can both be used to combat NAFLD in children and that more studies are needed to determine the association between gynoid fat and NAFLD.
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Data availability
De-identified cross-sectional data used in the analysis can be made available after authors' review of request for data.
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Acknowledgements
We thank the patients collected in our study for their important contribution.
Funding
This work was supported by the National Key R&D Program of China (grant numbers 2021YFC2701901 and 2016YFC1305300); National Natural Science Foundation of China (grant numbers 81570759 and 81270938); Fundamental Research Funds for the Central Universities (grant number 2017XZZX001-01); Zhejiang Provincial Key Science and Technology Project (grant number 2014C03045-2); Zhejiang Provincial Key Disciplines of Medicine (Innovation Discipline grant number 11-CX24); China Postdoctoral Science Foundation (grant number 2021M692852). The funders had no roles in the study design, data collection and analysis, or the preparation of the manuscript.
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JNC and RMD developed the study concept and design with the support from JFF. JNC, FLW, BHJ, and ZYW were responsible for administrative, technical, or material support and contributed to acquisition and interpretation of data. JNC and RMD analyzed the data. JNC wrote the manuscript. JNC and JFF had primary responsibility for final content. All authors revised the manuscript and approved the final version before submission.
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Our study was approved by the Medical Ethics Committee of the Children’s Hospital of Zhejiang University School of Medicine (2020-IRB-018).
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Chen, J., Jin, B., Wang, F. et al. The relative contributions of soft tissue mass components as risk or protective factors of non-alcoholic fatty liver disease in children. Eur J Clin Nutr 77, 1167–1172 (2023). https://doi.org/10.1038/s41430-023-01326-3
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DOI: https://doi.org/10.1038/s41430-023-01326-3