CONTEXT: Inhalation of sulfur mustard (HD) vapor can cause life-threatening lung injury for which there is no specific treatment. A reproducible, characterized in vivo model is required to investigate novel therapies targeting HD-induced lung injury. MATERIALS AND METHODS: Anesthetized, spontaneously breathing large white pigs (~50 kg) were exposed directly to the lung to HD vapor at 60, 100, or 150 µg/kg, or to air, for ~10 min, and monitored for 6 h. Cardiovascular and respiratory parameters were recorded. Blood and bronchoalveolar lavage fluid (BALF) were collected to allow blood gas analysis, hematology, and to assay for lung inflammatory cells and mediators. Urine was collected and analyzed for HD metabolites. Histopathology samples were taken postmortem (PM). RESULTS: Air-exposed animals maintained normal lung physiology whilst lying supine and spontaneously breathing. There was a statistically significant increase in shunt fraction across all three HD-exposed groups when compared with air controls at 3-6 h post-exposure. Animals were increasingly hypoxemic with respiratory acidosis. The monosulfoxide β-lyase metabolite of HD (1-methylsulfinyl-2-[2(methylthio)ethylsulfonyl)ethane], MSMTESE), was detected in urine from 2 h post-exposure. Pathological examination revealed necrosis and erosion of the tracheal epithelium in medium and high HD-exposed groups. CONCLUSION: These findings are consistent with those seen in the early stages of acute lung injury (ALI).
CONTEXT: Inhalation of sulfur mustard (HD) vapor can cause life-threatening lung injury for which there is no specific treatment. A reproducible, characterized in vivo model is required to investigate novel therapies targeting HD-induced lung injury. MATERIALS AND METHODS: Anesthetized, spontaneously breathing large whitepigs (~50 kg) were exposed directly to the lung to HD vapor at 60, 100, or 150 µg/kg, or to air, for ~10 min, and monitored for 6 h. Cardiovascular and respiratory parameters were recorded. Blood and bronchoalveolar lavage fluid (BALF) were collected to allow blood gas analysis, hematology, and to assay for lung inflammatory cells and mediators. Urine was collected and analyzed for HD metabolites. Histopathology samples were taken postmortem (PM). RESULTS: Air-exposed animals maintained normal lung physiology whilst lying supine and spontaneously breathing. There was a statistically significant increase in shunt fraction across all three HD-exposed groups when compared with air controls at 3-6 h post-exposure. Animals were increasingly hypoxemic with respiratory acidosis. The monosulfoxide β-lyase metabolite of HD (1-methylsulfinyl-2-[2(methylthio)ethylsulfonyl)ethane], MSMTESE), was detected in urine from 2 h post-exposure. Pathological examination revealed necrosis and erosion of the tracheal epithelium in medium and high HD-exposed groups. CONCLUSION: These findings are consistent with those seen in the early stages of acute lung injury (ALI).
Authors: Mark R Perry; Eric M Benson; Jonathon W Kohne; Jennifer L Plahovinsak; Michael C Babin; Gennady E Platoff; David T Yeung Journal: J Pharmacol Toxicol Methods Date: 2014-10-05 Impact factor: 1.950
Authors: Neerad C Mishra; Jules Rir-sima-ah; Gary R Grotendorst; Raymond J Langley; Shashi P Singh; Sravanthi Gundavarapu; Waylon M Weber; Juan C Pena-Philippides; Matthew R Duncan; Mohan L Sopori Journal: Int Immunopharmacol Date: 2012-03-28 Impact factor: 4.932
Authors: Mark R Perry; Matthew Neal; Roger Hawks; David Pressburger; Jan Satola; Cheryl Triplett; Beth Reed; Meredith Andrews; Jill A Harvilchuck; Michael S Nealy; Gennady E Platoff; David T Yeung Journal: Inhal Toxicol Date: 2021-08-15 Impact factor: 2.724
Authors: Livia A Veress; Tara B Hendry-Hofer; Joan E Loader; Jacqueline S Rioux; Rhonda B Garlick; Carl W White Journal: Am J Respir Cell Mol Biol Date: 2013-04 Impact factor: 6.914