A novel exposure system generating nebulized aerosol of sulfur mustard in comparison to the standard submerse exposure.

Inhalation of the chemical warfare agent sulfur mustard (SM) is associated with severe acute and long-term pulmonary dysfunctions and health effects. The still not completely elucidated molecular toxicology and a missing targeted therapy emphasize the need for further research. However, appropriate human data are extremely rare. In vivo animal experiments are often regarded as gold standard in toxicology but may exhibit significant differences compared to the human pulmonary anatomy and physiology. Thus, alternative in vitro exposure methods, adapted to the human in vivo situation by exposing cells at the air-liquid interface (ALI), are complimentary approaches at a cellular level. So far, it is unclear whether the enhanced experimental complexity of ALI exposure, that is potentially biologically more meaningful, is superior to submerged exposures which are typically performed. Aim of our study was the evaluation of an appropriate in vitro exposure system (CULTEX

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