Abstract
Background
As chronic kidney disease (CKD) progresses, metabolites undergo diverse transformations. Nevertheless, the impact of these metabolic changes on the etiology, progression, and prognosis of CKD remains uncertain. Our objective is to conduct a metabolomics analysis to scrutinize metabolites and identify significant metabolic pathways implicated in CKD progression, thereby pinpointing potential therapeutic targets for CKD management.
Methods
We recruited 145 patients with CKD and determined their mGFR by measuring the plasma iohexol clearance, whereupon we partitioned them into four groups based on their mGFR values. Non-targeted metabolomics analysis was conducted using UPLC-MS/MS assays. Differential metabolites were identified via one-way ANOVA, PCA, PLS-DA, and OPLS-DA analyses employing the MetaboAnalyst 5.0 platform. Ultimately, we performed differential metabolite pathway enrichment analysis, using both the MetaboAnalyst 5.0 platform and the MBRole2.0 database.
Results
According to the findings of the MBRole2.0 and MetaboAnalyst 5.0 enrichment analysis, six amino acid metabolism pathways were discovered to have significant roles in the progression of CKD, with the glycine, serine, and threonine metabolism pathway being the most prominent. The latter enriched 14 differential metabolites, of which six decreased while two increased concomitantly with renal function deterioration.
Conclusions
The metabolic analysis unveiled that glycine, serine, and threonine metabolism plays a pivotal role in the progression of CKD. Specifically, glycine was found to increase while serine decreased with the deterioration of CKD.
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Data availability
The original contributions presented in the study are included in the article material, further inquiries can be directed to the corresponding authors.
Code availability
Not applicable.
Abbreviations
- ANOVA:
-
Analysis of variance
- BMI:
-
Body mass index
- CKD:
-
Chronic kidney disease
- eGFR:
-
Estimated glomerular filtration rate
- ESI:
-
Electrospray ionization
- FA:
-
Formic acid
- GFR:
-
Glomerular filtration rate
- HILIC:
-
Hydrophilic interaction chromatography
- IAA:
-
Indole-3-acetic acid
- IS:
-
Indoxyl sulphate
- mGFR:
-
Measured glomerular filtration rate
- 5-MTP:
-
5-Methoxy tryptophan
- m/z :
-
Mass to charge ratio
- NF-κB:
-
Nuclear factor-κB
- OPLS-DA:
-
Orthogonal partial least squares-discriminant analysis
- OSC:
-
Orthogonal signal correction
- PCA:
-
Principal component analysis
- PCS:
-
p-Cresyl sulphate
- PFPA:
-
Perfluoropentanoic acid
- PLS-DA:
-
Partial least squares-discriminant analysis
- RP:
-
Reversed-phase
- TPH-1:
-
Tryptophan hydroxylase-1
- UPLC-MS/MS:
-
Ultra performance liquid chromatograph tandem mass spectrometry
- VIP:
-
Variable importance in the projection
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Funding
This study was supported by grants from the National Natural Science Foundation of China (Grant No. 81873631, 81370866, 81070612) and Science and Technology Plan Project of Guangzhou (Grant No. 202002020047, 202007040003), The Science and Technology Development Fund, Macau SAR (File no. 0032/2018/A1).
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All authors have read and approved the manuscript. JK and XG: Conceptualization, methodology, and writing—original draft preparation. XL and HP: Funding acquisition. YD and CA: Visualization and Supervision. JL and TsT: Investigation. LT and TT: Data curation and Validation. XL and HP: Writing-review, funding, and editing.
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Kang, J., Guo, X., Peng, H. et al. Metabolic implications of amino acid metabolites in chronic kidney disease progression: a metabolomics analysis using OPLS-DA and MBRole2.0 database. Int Urol Nephrol 56, 1173–1184 (2024). https://doi.org/10.1007/s11255-023-03779-8
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DOI: https://doi.org/10.1007/s11255-023-03779-8