VCAM1 and endothelial dysfunction: The aim of this study was to measure the levels of PA, LPA and the LPA-producing enzymes PLA1, PLA2 and AGK in the vitreous fluid from patients with PDR and to correlate the levels of PA and LPA with the levels of the inflammation and endothelial dysfunction biomarker soluble vascular cell adhesion molecule-1 (sVCAM-1).