PMID- 35570235 OWN - NLM STAT- MEDLINE DCOM- 20220624 LR - 20220716 IS - 1432-0738 (Electronic) IS - 0340-5761 (Print) IS - 0340-5761 (Linking) VI - 96 IP - 8 DP - 2022 Aug TI - Highly stable peptide adducts from hard keratins as biomarkers to verify local sulfur mustard exposure of hair by high-resolution mass spectrometry. PG - 2287-2298 LID - 10.1007/s00204-022-03307-0 [doi] AB - In the recent past, the blister agent sulfur mustard (SM) deployed by the terroristic group Islamic State has caused a huge number of civilian and military casualties in armed conflicts in the Middle East. The vaporized or aerolized agent might be inhaled and have direct contact to skin and hair. Reaction products of SM with plasma proteins (adducts) represent well-established systemic targets for the bioanalytical verification of exposure. The SM-derived hydroxyethylthioethyl (HETE)-moiety is attached to nucleophilic amino acid side chains and allows unambiguous adduct detection. For shipping of common blood and plasma samples, extensive packaging rules are to be followed as these matrices are considered as potentially infectious material. In contrast, hair is considered as non-infectious thus making its handling and transportation much less complicated. Therefore, we addressed this matrix to develop a procedure for bioanalytical verification. Following optimized lysis of SM-treated human scalp hair and pepsin-catalyzed proteolysis of adducts of keratin type I and II, microbore liquid chromatography-electrospray ionization high-resolution tandem-mass spectrometry (microLC-ESI MS/HR MS) was used to detect three alkylated keratin-derived biomarker peptides: AE(-HETE)IRSDL, FKTIE(-HETE)EL, and LE(-HETE)TKLQF simultaneously. All bear the HETE-moiety bound to a glutamic acid residue. Protein adducts were stable for at least 14 weeks at ambient temperature and contact to air, and were not affected by washing the hair with shampoo. The biomarker peptides were also obtained from beard, armpit, abdominal, and pubic hair. This is the first report introducing stable local peptide adduct biomarkers from hair, that is easily accessible by a non-invasive sampling process. CI - (c) 2022. The Author(s). FAU - Schmeisser, Wolfgang AU - Schmeisser W AD - Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstrasse 11, 80937, Munich, Germany. FAU - Siegert, Markus AU - Siegert M AD - Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstrasse 11, 80937, Munich, Germany. AD - Department of Chemistry, Humboldt-Universitat Zu Berlin, Brook-Taylor-Strasse 2, 12489, Berlin, Germany. AD - Proteros Biostructures GmbH, Bunsenstrasse 7a, 82152, Planegg, Germany. FAU - Thiermann, Horst AU - Thiermann H AD - Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstrasse 11, 80937, Munich, Germany. FAU - Rein, Theo AU - Rein T AD - Max Planck Institute of Psychiatry, Kraepelinstrasse 2-10, 80804, Munich, Germany. FAU - John, Harald AU - John H AUID- ORCID: 0000-0002-7126-6709 AD - Bundeswehr Institute of Pharmacology and Toxicology, Neuherbergstrasse 11, 80937, Munich, Germany. HaraldJohn@bundeswehr.org. LA - eng GR - GRK 2338/Deutsche Forschungsgemeinschaft/ PT - Journal Article DEP - 20220516 PL - Germany TA - Arch Toxicol JT - Archives of toxicology JID - 0417615 RN - 0 (Biomarkers) RN - 0 (Chemical Warfare Agents) RN - 0 (Hydroxyeicosatetraenoic Acids) RN - 0 (Peptides) RN - 68238-35-7 (Keratins) RN - T8KEC9FH9P (Mustard Gas) RN - ZIF514RVZR (Serum Albumin, Human) SB - IM MH - Biomarkers MH - *Chemical Warfare Agents/chemistry MH - Hair/chemistry MH - Humans MH - Hydroxyeicosatetraenoic Acids MH - Keratins MH - *Mustard Gas/chemistry/toxicity MH - Peptides MH - Serum Albumin, Human/chemistry MH - Spectrometry, Mass, Electrospray Ionization MH - Tandem Mass Spectrometry/methods PMC - PMC9217830 OTO - NOTNLM OT - Hydroxyethylthioethyl-moiety OT - Organisation for the Prohibition of Chemical Weapons OT - Peptide biomarker OT - Protein adducts OT - Vesicant COIS- The authors declare no conflict of interest. EDAT- 2022/05/16 06:00 MHDA- 2022/06/25 06:00 PMCR- 2022/05/16 CRDT- 2022/05/15 23:15 PHST- 2022/01/26 00:00 [received] PHST- 2022/04/27 00:00 [accepted] PHST- 2022/05/16 06:00 [pubmed] PHST- 2022/06/25 06:00 [medline] PHST- 2022/05/15 23:15 [entrez] PHST- 2022/05/16 00:00 [pmc-release] AID - 10.1007/s00204-022-03307-0 [pii] AID - 3307 [pii] AID - 10.1007/s00204-022-03307-0 [doi] PST - ppublish SO - Arch Toxicol. 2022 Aug;96(8):2287-2298. doi: 10.1007/s00204-022-03307-0. Epub 2022 May 16.