ADMA and homoarginine independently predict mortality in critically ill patients

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dc.contributor.authorLee, T.F.
dc.contributor.authorBersten, A.D.
dc.contributor.authorHeilbronn, L.K.
dc.contributor.authorZinellu, A.
dc.contributor.authorCarru, C.
dc.contributor.authorSotgia, S.
dc.contributor.authorMangoni, A.A.
dc.contributor.authorBurt, M.G.
dc.date.issued2022
dc.description.abstractWe investigated whether arginine metabolites are associated with mortality in patients with critical illness and whether associations are independent of other factors affecting prognosis in an Intensive Care Unit (ICU). Methods: 1155 acutely unwell adult patients admitted to a mixed medical-surgical ICU were studied. Arginine, asymmetric dimethyl-L-arginine (ADMA), monomethyl-L-arginine (MMA), symmetric dimethyl-L-arginine (SDMA) and L-homoarginine were measured in a plasma sample collected at admission to ICU by liquid chromatography tandem mass spectrometry. Risk of death score was calculated using data submitted to the Australia and New Zealand Intensive Care Society. Results: In this cohort, 163 patients (14.1%) died. ADMA (odds ratio = 1.159 (1.033–1.300) per 0.1 μmol/L increment, p = 0.012), homoarginine (odds ratio = 0.963 (0.934–0.992), p = 0.013) and risk of death score (odds ratio = 1.045 (1.037–1.053) per 1% increment, p < 0.001) were independently associated with mortality in ICU patients. The area under the receiver operator characteristic curve for risk of death score, ADMA and homoarginine combined for mortality was greater than for risk of death score alone (0.815 (95% CI 0.790–0.837) vs 0.796 (95% CI 0.781–0.820), p = 0.019). Other arginine metabolites were not independently associated with mortality. Conclusions: ADMA is positively and homoarginine negatively associated with mortality in ICU patients, independent of other clinical factors. Measuring ADMA and homoarginine may refine models to predict ICU mortality. Reducing ADMA and increasing homoarginine are potential therapeutic targets to reduce mortality in critically ill patients.
dc.description.statementofresponsibilityTien F. Lee, Andrew D. Bersten, Leonie K. Heilbronn, Angelo Zinellu, Ciriaco Carru, Salvatore Sotgia, Arduino A. Mangoni, Morton G. Burt
dc.identifier.citationNitric Oxide - Biology and Chemistry, 2022; 122-123:47-53
dc.identifier.doi10.1016/j.niox.2022.03.002
dc.identifier.issn1089-8603
dc.identifier.issn1089-8611
dc.identifier.orcidHeilbronn, L.K. [0000-0003-2106-7303]
dc.identifier.urihttps://hdl.handle.net/2440/135380
dc.language.isoen
dc.publisherElsevier
dc.rights© 2022 Elsevier Inc. All rights reserved.
dc.source.urihttps://doi.org/10.1016/j.niox.2022.03.002
dc.subjectCritical care
dc.subjectIn-hospital mortality
dc.subjectAcute physiology and chronic health evaluation
dc.subjectAsymmetric dimethylarginine
dc.subjectHomoarginine
dc.subjectArginine
dc.subject.meshCardiovascular System
dc.subject.meshHumans
dc.subject.meshCritical Illness
dc.subject.meshArginine
dc.subject.meshHomoarginine
dc.subject.meshCohort Studies
dc.subject.meshAdult
dc.subject.meshBiomarkers
dc.titleADMA and homoarginine independently predict mortality in critically ill patients
dc.typeJournal article
pubs.publication-statusPublished

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