Figure 5.

Individual protein quantification of eight analytes in matched heat moisture exchanger filter fluid (HMEF) and edema fluid (EF). Individual proteins were measured by ELISA and electrochemiluminescence in six patients with matched samples of HMEF and EF. Patients 1 and 3, acute respiratory distress syndrome; Patient 4, hydrostatic pulmonary edema; Patients 2, 5, and 6, mixed. MMP-9 = matrix metalloproteinase-9; MPO = myeloperoxidase; RAGE = receptor for advanced glycation end-products; SP-D = surfactant protein-D; TNF-α = tumor necrosis factor-α.