1. A composition comprising at least one culture of probiotic bacteria selected from the group comprising the following bacterial cultures deposited in the German collection of microorganisms and cell cultures (Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbH (DSMZ)): Lactobacillus salivarius (LS01) DSM 22775 deposited on 07/23/2009； Bifidobacterium breve (BR03) DSM 16604 deposited on 07/20/2004； Lactobacillus pentosus (LPS01) DSM 21980 deposited on 11/14/2008； Streptococcus thermophilus (FP4) DSM 18616 deposited on 09/13/2006； Lactobacillusosus ssp. (LR04) DSM 16605, deposited on July 20, 2004； and Lactobacillus acidophilus (LA02) DSM 21717, deposited on 08/06/2008, for use in the treatment of pathologies associated with changes in the immune system. 2. The composition according to claim 1 for use in the prophylactic and / or therapeutic treatment of pathologies associated with changes in the immune system selected from the group consisting of allergies, atopy, allergic rhinitis, food hypersensitivity, atopic dermatitis, eczema, asthma or immunodeficiencies. The composition according to claim 1 or 2 for use in the prophylactic and / or therapeutic treatment of atopic dermatitis. 4. The composition for use according to claim 1, containing at least one culture of probiotic bacteria selected from the group comprising Lactobacillus salivarius (LS01) DSM 22775, Bifidobacterium breve (BR03) DSM 16604 and Lactobacillus pentosus (LPS 01) DSM 21980.5. The composition for use according to claim 4, consisting of Lactobacillus salivarius (LS01) DSM 22775, Bifidobacterium breve (BR03) DSM 16604 and L. pentosus (LPS01) DSM 21980.6. The composition for use according to claim 4, consisting of Lactobacillus salivarius (LS01) DSM 22775 and Bifidobacterium breve (BR03) DSM 16604.7. The composition for use according to claim 1, wherein said bacterial cultures are represented in said compositions in the form of living bacteria, dead bacteria or cellular components, cellular
