Platelet-activating factor (PAF) is a key mediator of systemic anaphylaxis. The principal target cell type of PAF in systemic anaphylaxis remains unclear. Endothelial cell-specific PAFR-deficient mice were protected from mortality in PAF-induced systemic anaphylaxis. Endothelial PAFR is suggested to be the principal target mediating PAF-driven mortality in systemic anaphylaxis.
Suzuki et al. (Wed,) studied this question.