ObjectivesAlpha1-antitrypsin (AAT) is the main inhibitor of human neutrophil elastase. and plays a role in counteracting the tissue damage caused by elastase in local inflammatory conditions. The study evaluated the involvement of AAT in nasal allergic inflammation. MethodsForty subjects with mono-sensitization to Dermatophagoides pteronyssinus (Dpt) were enrolled. https://www.socialstudiesscholar.com/