“…Reduced levels of a number of other mediators have been reported after PMX. The list includes IL-6 [12,13,14], IL-10 [13,14], IL-18 [15], TNF-α [14,16], metalloproteinase-9 and tissue inhibitor of metalloproteinase-1 [7], plasminogen activator inhibitor-1 [14,16,17], neutrophil elastase [9,18], platelet factor-4 [15], β-thromboglobulin [15], soluble P selectin [15] and endogenous cannabinoids [15,19] such as anandamide. Several of these mediators cause lung injury, increase vascular permeability and worsen intrapulmonary shunting.…”