Fig. 3From: What is known about the effects of vitamin D in neuropsychiatric lupus?In NPSLE, the disruption of the blood–brain barrier allows the passage of cells from the immune system and molecules to the brain. Vitamin D is able to reduce free radicals in the brain environment providing neuronal survival. It is also able to reduce IgG deposits and ensure apoptotic signaling by immune system cellsBack to article page