Using a stress model in animals, Da Silva and colleagues induced gut hyperpermeability and visceral hypersensitivity as well as a shift in O-glycosylation of mucins, associated with flattening and loss of the mucus layer cohesive properties. The probiotic L. farciminis bound to intestinal Muc2 prevented stress-induced functional alterations and changes in mucin O-glycosylation and mucus physical properties and restored epithelial and mucus barrier strengthening.
Da Silva et al. Stress disrupts intestinal mucus barrier in rats via mucin O-glycosylation shift: prevention by a probiotic treatment. Am J Physiol Gastrointest Liver Physiol. 2014 Aug 15;307(4):G420-9. doi: 10.1152/ajpgi.00290.2013