Vitamin D Deficiency Promotes Epithelial Barrier Dysfunction and Intestinal Inflammation Background. Vitamin D, an important modulator of the immune system, has been shown to protect mucosal barrier homeostasis. This study investigates the effects of vitamin D deficiency on infection-induced changes in intestinal epithelial barrier function in vitro and on Citrobacter rodentium–induced colitis in mice. Methods. Polarized...
