ArticleJournal of internal medicine2023
Metabolomic markers mediate erythrocyte anisocytosis in older adults: Results from three independent aging cohorts.
Article in Journal of internal medicine, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 7 citations in OpenAlex.
- Age-Associated Variations in Complete Blood Cell Count Parameters and Derived Indices Among Community-Dwelling Chinese Older Adults.Journal of clinical laboratory analysis · 2026Article
- [Elevation of red blood cell distribution width to hematocrit ratio is associated with increased 28-day all-cause mortality in septic patients].Nan fang yi ke da xue xue bao = Journal of Southern Medical University · 2026Article
- Plasma lipids connecting olfaction with cognition and physical function.Scientific reports · 2026Article
- Article
- Comparative analysis of sex-dependent serum metabolomic patterns across the lifespan of rhesus macaques.Frontiers in genetics · 2025Article
- Plasma metabolomic markers underlying skeletal muscle mitochondrial function relationships with cognition and motor function.Age and ageing · 2024Article
- Association between Red Blood Cell Distribution Width and Obstructive Sleep Apnea Syndrome: A Systematic Review and Meta-Analysis.Journal of clinical medicine · 2023Review
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
Abstract
backgroundAnisocytosis reflects unequal-sized red blood cells and is quantified using red blood cell distribution width (RDW). RDW increases with age and has been consistently associated with adverse health outcomes, such as cardiovascular disease and mortality. Why RDW increases with age is not understood. We aimed to identify plasma metabolomic markers mediating anisocytosis with aging.
methodsWe performed mediation analyses of plasma metabolomics on the association between age and RDW using resampling techniques after covariate adjustment. We analyzed data from adults aged 70 or older from the main discovery cohort of the Baltimore Longitudinal Study of Aging (BLSA, n = 477, 46% women) and validation cohorts of the Health, Aging and Body Composition Study (Health ABC, n = 620, 52% women) and Invecchiare in Chianti, Aging in the Chianti Area (InCHIANTI) study (n = 735, 57% women). Plasma metabolomics was assayed using the Biocrates MxP Quant 500 kit in BLSA and Health ABC and liquid chromatography with tandem mass spectrometry in InCHIANTI.
resultsIn all three cohorts, symmetric dimethylarginine (SDMA) significantly mediated the association between age and RDW. Asymmetric dimethylarginine (ADMA) and 1-methylhistidine were also significant mediators in the discovery cohort and one validation cohort. In the discovery cohort, we also found choline, homoarginine, and several long-chain triglycerides significantly mediated the association between age and RDW. CONCLUSIONS AND RELEVANCE: This metabolomics study of three independent aging cohorts identified a specific set of metabolites mediating anisocytosis with aging. Whether SDMA, ADMA, and 1-methylhistidine are released by the damaged erythrocytes with high RDW or they affect the physiology of erythrocytes causing high RDW should be further investigated.
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