Diabetic Macular Edema Pathophysiology: Vasogenic versus Inflammatory

Table 1

Blood-retina barrier components, types of union, and the molecules located in retinal endothelial junctions.

Type of union	Molecule/component/cell
Tight junctions	Claudins (numbers: 1, 2, 5 and 12); Endothelial cell-specific adhesion molecule; F11 receptor (jam-1); Junctional adhesions molecules (numbers: 2 and 3); Occludin; Zonula occludens (numbers: 1 and 2)
Adherents junctions	-Caterin; VE-Cadherin; N-Cadherin
Basal membrane	Basal membrane
Cells	Astrocytes; Endothelial cells; Microglia; Müller cells; Pericytes