Biological process

positive regulation of BBB permeability, positive regulation of blood/brain barrier permeability, up-regulation of BBB permeability, up-regulation of blood-brain barrier permeability, up-regulation of blood/brain barrier permeability, upregulation of BBB permeability, upregulation of blood-brain barrier permeability, upregulation of blood/brain barrier permeability

Any process that increases blood-brain barrier permeability, the quality of the blood-brain barrier that allows for a controlled passage of substances (e.g. macromolecules, small molecules, ions) into and out of the brain.