“…Probiotics act in the intestinal mucosa improving, among other factors, the barrier against pathogens due to increased production of IgA, which makes these products effective for treating food allergies and dermatitis (ZUBILLAGA, 2001;LOPITZ-OTSOA, 2006). Other studies have shown additional effects, in which probiotics act in the prevention and control of respiratory infections, in the colonization of pathogenic bacteria by competing for binding sites, and in the change of intestinal microbiota composition (MATTILA-SANDHOLM et al, 1999; WOHLGEMUTH; LOH; BLAUT, 2010).…”