Evidence map›Paper›PMID 39891463›Full record

ArticleBioanalysis2025

Accelerating isotope dilution LC-MS-based desmosine quantification for estimating elastin turnover.

Elena Kuzmanova, Angela McIntyre, Maaz Syed, Zaid Iskandar, David E Newby, Matt J Bown, Anna-Maria Choy, Jeffrey Tj Huang

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Article in Bioanalysis, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Elena KuzmanovaSystems Medicine, School of Medicine, University of Dundee, Dundee, UK.
Angela McIntyreSystems Medicine, School of Medicine, University of Dundee, Dundee, UK.
Maaz SyedQueen's Medical Research Institute, MRC/University of Edinburgh Centre for Inflammation Research, Edinburgh, UK.
Zaid IskandarMolecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee, UK.
David E NewbyQueen's Medical Research Institute, MRC/University of Edinburgh Centre for Inflammation Research, Edinburgh, UK.
Matt J BownDepartment of Cardiovascular Sciences, University of Leicester, Leicester, UK.
Anna-Maria ChoyMolecular and Clinical Medicine, School of Medicine, University of Dundee, Dundee, UK.
Jeffrey Tj HuangSystems Medicine, School of Medicine, University of Dundee, Dundee, UK.

Funding

British Heart Foundation CH/09/002/26360
6 · The paper itself

Abstract

aimsCirculating total desmosine, representing endogenous systemic elastin degradation activity, is an emerging biomarker for mortality risk in several diseases and aging. However, the existing analytical method takes more than 23 hours to complete, limiting its potential applications. The objective of this study was to shorten the turnover time of a stable isotope dilution liquid chromatogram mass spectrometry-based desmosine assay. MATERIALS &

methodsPlasma samples were analyzed using acid hydrolysis followed by solid-phase extraction and LC-MS. Two approaches to reduce assay time were tested: microwave-assisted acid hydrolysis and direct injection following solid-phase extraction.

resultsThe combination of acid hydrolysis at 180°C for 8 minutes and a low-volume elution design for solid-phase extraction reduced the overall assay time to ~ 30 minutes. The assay was validated with intra-day precision and accuracy ranging from 4% to 14%, and -7% to 9%, respectively, while inter-day precision and accuracy were 0% to 9% and 1% to 3%, respectively. The assay was tested in a cohort of patients with acute aortic dissection and control subjects, where desmosine concentrations were approximately three-fold higher in patients.

conclusionsThese results demonstrated that rapid desmosine analysis can be achieved with the use of both microwave-assisted hydrolysis and streamlined solid-phase extraction.

Indexed as

DesmosineElastinMass SpectrometryChromatography, LiquidHumansHydrolysisIndicator Dilution TechniquesLiquid Chromatography-Mass SpectrometryMicrowavesSolid Phase ExtractionTandem Mass SpectrometryDesmosineElastinaortic aneurysmaortic dissectionDesmosinemicro solid phase extractionmicrowavestable isotope dilution LC-MS/MS

Identifiers

PMID39891463
PMCPMC11801354

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.