2017
Polymerization of hexamethylene diisocyanate in solution and a 260.23 m/z [M+H]+ ion in exposed human cells
Wisnewski AV, Liu J, Redlich CA, Nassar AF. Polymerization of hexamethylene diisocyanate in solution and a 260.23 m/z [M+H]+ ion in exposed human cells. Analytical Biochemistry 2017, 543: 21-29. PMID: 29175138, PMCID: PMC5826792, DOI: 10.1016/j.ab.2017.11.017.Peer-Reviewed Original ResearchConceptsHexamethylene diisocyanateCollision-induced dissociation (CID) fragmentation patternsNucleophilic additionImportant industrial chemicalPrimary aminesFragmentation patternsO groupLC-MS/MSLC-MS/MS analysisLC-MSReaction productsIonsMS analysisFormula CIndustrial chemicalsDiisocyanatePolymerizationPolymersReaction targetWaterSolutionAminesDefinitive characterizationMoleculesDimersReaction products of hexamethylene diisocyanate vapors with “self” molecules in the airways of rabbits exposed via tracheostomy
Wisnewski AV, Kanyo J, Asher J, Goodrich JA, Barnett G, Patrylak L, Liu J, Redlich CA, Nassar AF. Reaction products of hexamethylene diisocyanate vapors with “self” molecules in the airways of rabbits exposed via tracheostomy. Xenobiotica 2017, 48: 488-497. PMID: 28489470, PMCID: PMC5863241, DOI: 10.1080/00498254.2017.1329569.Peer-Reviewed Original ResearchConceptsCollision-induced dissociation (CID) fragmentation patternsReaction productsLower airwaysChemical reactivityLow molecular weight fractionWeight fractionHigh molecular weight fractionAliphatic diisocyanateMolecular weight fractionFragmentation patternsHexamethylenediisocyanateLC-MSHDI vaporAirways of rabbitsBronchoalveolar lavage fluidRabbit bronchoalveolar lavage fluidMoleculesDiisocyanate vaporsMs. 4Albumin. 5Occupational asthmaReactivityBAL fluidAsthma pathogenesisLavage fluid
2010
Antigenic changes in human albumin caused by reactivity with the occupational allergen diphenylmethane diisocyanate
Wisnewski AV, Liu J, Redlich CA. Antigenic changes in human albumin caused by reactivity with the occupational allergen diphenylmethane diisocyanate. Analytical Biochemistry 2010, 400: 251-258. PMID: 20123080, PMCID: PMC3106273, DOI: 10.1016/j.ab.2010.01.037.Peer-Reviewed Original ResearchConceptsHigh-performance liquid chromatographyDiphenylmethane diisocyanateConjugation sitesReaction productsCross-linking agentTandem mass spectrometryPolyurethane productionMass spectrometryMDI-exposed workersCause of asthmaHuman albuminSerum immunoglobulin GLiquid chromatographyReaction specificityDiisocyanateSecond lysineMDI conjugationAirway inflammationAnalytical methodSelf proteinsProteomic methodologiesEpitope specificityAntigenic changesClinical researchConjugates