Estimation of postmortem interval using top-down HPLC–MS analysis of peptide fragments in vitreous humour: A pilot study

M. Boroumand, V. M. Grassi, F. Castagnola, Fabio De Giorgio*, E. d'Aloja, Giuseppe Vetrugno, Vincenzo Lorenzo Pascali*, F. Vincenzoni, Federica Iavarone, G. Faa, M. Castagnola

*Autore corrispondente per questo lavoro

Risultato della ricerca: Contributo in rivistaArticolo in rivista

Abstract

This study reports the detection of a set of 35 peptide fragments and 7 intact proteins in the vitreous humour using a top-down proteomic platform based on high-resolution HPLC-MS and MS/MS analysis. The concentrations of thymosin b4 (R = 0.932) and two peptide fragments (i.e., vimentin fragment (Fr.) 443-465 (R = 0.998) and polyubiquitin Fr. 1-73 (R = 0.968)) were observed to have very strong linear correlations with postmortem intervals. Data are available via ProteomeXchange with identifier PXD037095. These preliminary results suggest that some biochemical molecular events are linearly related to the postmortem interval and that the concentrations of these peptides and fragments can be clinically useful in establishing the time of death if measured within the first 160 h postmortem. (c) 2022 Elsevier B.V. All rights reserved.
Lingua originaleEnglish
pagine (da-a)N/A-N/A
RivistaInternational Journal of Mass Spectrometry
Volume483
Numero di pubblicazione5
DOI
Stato di pubblicazionePubblicato - 2023

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry

Keywords

  • Forensic autopsy
  • Peptide fragments
  • Postmortem interval
  • Postmortem investigation
  • Time of death
  • Top-down HPLC-MS analysis
  • Vitreous humour

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