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Hu Y, Mulot C, Bourreau C, Martin D, Laurent-Puig P, Radoï L, Guénel P, Borges CR. Biochemically Tracked Variability of Blood Plasma Thawed-State Exposure Times in a Multisite Collection Study. Biopreserv Biobank 2020; 18:376-388. [PMID: 32608993 PMCID: PMC9836705 DOI: 10.1089/bio.2019.0137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The integrity of blood plasma/serum (P/S) specimens can be impacted by preanalytical handling and storage conditions that result in thawed-state exposures (> -30°C). We recently reported a simple dilute-and-shoot, intact-protein liquid chromatography/mass spectrometry (LC/MS) assay called ΔS-Cys-Albumin that quantifies cumulative exposure of P/S to thawed conditions based on the change in relative abundance of the oxidized (S-cysteinylated) proteoform of albumin (S-Cys-Albumin) in the native sample to that of an aliquot of the sample intentionally driven to its maximum oxidation state. Herein, we evaluated the effect of prestorage delay and initial storage temperature on sample integrity by applying the ΔS-Cys-Albumin assay to a set of plasma samples (n = 413) collected under a single clinical study but from 12 different collection sites. Major differences (p < 0.0001) were observed between different groups of samples with modestly inconsistent initial handling conditions (i.e., initial processing of whole blood to plasma and placement at -80°C completed in under 3 hours, 3-13 hours, and over 17 hours). ΔS-Cys-Albumin was significantly inversely correlated with delay time at 4°C before centrifugation and total delay before final storage at -80°C (p < 0.0001). Samples from two collection sites had much lower ΔS-Cys-Albumin values relative to samples from other sites, in accordance with the fact that they were stored at -20°C for an average of 7.6 months before shipment to the central repository for final storage at -80°C. Based on the rate law for S-Cys-Albumin formation in plasma ex vivo, the average time that each plasma specimen had been exposed to the equivalent of room temperature (23°C) was back calculated from the measured ΔS-Cys-Albumin values. A survey of clinical analytes in P/S whose measured concentrations are sensitive to the initial handling/storage conditions documented in this study is provided and the ramifications of the plasma integrity findings from this multisite clinical study are discussed.
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Affiliation(s)
- Yueming Hu
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, Arizona, USA
| | - Claire Mulot
- INSERM, UMR-S 1147, CRB EPIGENETEC, Université Paris Descartes, Université Sorbonne Paris Cité, Paris, France
| | - Camille Bourreau
- INSERM, UMR-S 1147, CRB EPIGENETEC, Université Paris Descartes, Université Sorbonne Paris Cité, Paris, France
| | - Diane Martin
- INSERM, Center for Research in Epidemiology and Population Health (CESP), Cancer and Environment Team, Université Paris-Sud, Université Paris-Saclay, Villejuif, France
| | - Pierre Laurent-Puig
- INSERM, UMR-S 1147, CRB EPIGENETEC, Université Paris Descartes, Université Sorbonne Paris Cité, Paris, France
| | - Loredana Radoï
- INSERM, Center for Research in Epidemiology and Population Health (CESP), Cancer and Environment Team, Université Paris-Sud, Université Paris-Saclay, Villejuif, France.,Faculty of Dental Surgery, University Paris Descartes, Paris, France
| | - Pascal Guénel
- INSERM, Center for Research in Epidemiology and Population Health (CESP), Cancer and Environment Team, Université Paris-Sud, Université Paris-Saclay, Villejuif, France
| | - Chad R. Borges
- School of Molecular Sciences and The Biodesign Institute at Arizona State University, Tempe, Arizona, USA.,Address correspondence to: Chad R. Borges, PhD, School of Molecular Sciences, The Biodesign Institute at Arizona State University, P.O. Box 876401, Tempe, AZ 85287, USA
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