Abstract
Inflammatory bowel disease epidemiology has grown dramatically in recent years, particularly in developed and developing Western countries. Many factors, including stress, diet, and medications, cause and exacerbate inflammatory conditions. Inflammation is closely related to the concept of intestinal barrier integrity. When integrity is compromised, toxins and pathogens can enter the bloodstream. In recent years, there has been a growing interest in using probiotic bacteria to prevent or treat a variety of pathologies, including inflammatory bowel disease. Some studies have looked at the effectiveness of multi-strain probiotic supplements in preventing intestinal barrier dysfunction in in vitro models of lipopolysaccharide-induced inflammation. To mimic the intestinal barrier, human colon adenocarcinoma cell lines were established in Transwell co-culture models. The epithelium permeability was assessed by measuring the transepithelial electrical resistance. The expression of individual proteins involved in barrier function was assessed. The immunomodulatory effects of probiotic formulations were studied in both human macrophage cell lines and ex vivo human peripheral blood mononuclear cell-derived macrophages. The intestinal epithelial layer was also interfaced with a human mast cell line. Selected probiotics have demonstrated high potential for use in maintaining intestinal barrier integrity and possessing anti-inflammatory properties.