Table 2: Toxic effects of NETs

on lung epithelium and epithelial cells.

NET components

Cytotoxic effect

DNA fibers

Diffuse alveolar damage and hemorrhage

Histones

Increase the permeability of the endothelium

NE

Destruction of the cytoskeleton of endothelial cells.

Affects the integrity of the alveolar barrier.

Associated with inflammation and thrombosis by the release of proinflammatory cytokines.

MPO

Involved in epithelial cell apoptosis by the release of ROS

DNA = deoxyribonucleic acid.

MPO = myeloperoxidase.

NE = neutrophil elastase.

NET = neutrophil extracellular traps.