ArticleAnalytical chemistry2024
Discovery of Hypoxanthine and Inosine as Robust Biomarkers for Predicting the Preanalytical Quality of Human Plasma and Serum for Metabolomics.
Article in Analytical chemistry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Association of rapamycin treatment with the modulation of purine metabolism, reduced microglial inflammatory responses, improved mitochondrial energy metabolism, and alleviation of fatigue symptoms in ME/CFS subjects: pilot findings from phase-II observational study.Journal of translational medicine · 2026Trial
- SERSome-based metabolic profiling of aqueous humor for cataract subtyping with molecule-level interpretability.Journal of nanobiotechnology · 2026Article
- Phosphomannomutase 1 restrains adipose thermogenic programming via inosine signaling.Molecular metabolism · 2026Article
- Dual-channel non-enzymatic sensor for comprehensive purine profiling: synergizing anodically pretreated boron-doped nanodiamond and PdMikrochimica acta · 2026Article
- Analysis of purines and pyrimidines across biospecimens: influence of storage temperature and duration.Scientific reports · 2026Article
- Systematic evaluation of pre-analytical variables on synovial fluid metabolomic profiles using GC-ToF-MS and UHPLC-MS.The Analyst · 2026Article
- Identification and Distribution of the Dietary Antioxidant Ergothioneine in Humans and Animal Models Combining NMR, RANSY, and MS Methods.Analytical chemistry · 2025Article
- Article
- Recommendations for sample selection, collection and preparation for NMR-based metabolomics studies of blood.Metabolomics : Official journal of the Metabolomic Society · 2025Review
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
In cold human blood, the anomalous dynamics of adenosine triphosphate (ATP) result in the progressive accumulation of adenosine diphosphate (ADP), adenosine monophosphate (AMP), inosine monophosphate (IMP), inosine, and hypoxanthine. While the ATP, ADP, AMP, and IMP are confined to red blood cells (RBCs), inosine and hypoxanthine are excreted into plasma/serum. The plasma/serum levels of inosine and hypoxanthine depend on the temperature of blood and the plasma/serum contact time with the RBCs, and hence they represent robust biomarkers for evaluating the preanalytical quality of plasma/serum. These biomarkers are highly specific since they are generally absent or at very low levels in fresh plasma/serum and are highly sensitive since they are derived from ATP, one of the most abundant metabolites in blood. Further, whether blood was kept at room temperature or on ice could be predicted based on inosine levels. An analysis of >2000 plasma/serum samples processed for metabolomics-centric analyses showed alarmingly high levels of inosine and hypoxanthine. The results highlight the gravity of sample quality challenges with high risk of grossly inaccurate measurements and incorrect study outcomes. The discovery of these robust biomarkers provides new ways to address the longstanding and underappreciated preanalytical sample quality challenges in the blood metabolomics field.
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