Immunomodulatory activity of Lactobacillus rhamnosus strains isolated from goat milk: Impact on intestinal and respiratory infections

Authors
Salva, Maria Susana; Villena, Julio Cesar; Alvarez, Gladis Susana
Publication Year
2010
Language
English
Format
article
Status
Published version
Description
The immune stimulation induced by Lactobacillus rhamnosus CRL1505 (Lr05) and L. rhamnosus CRL1506 (Lr06) on the resistance to infection with an intestinal pathogen (Salmonella typhimurium) and a respiratory pathogen (Streptococcus pneumoniae) was studied in swiss-albine mice experimental models. The cytokine profiles that induced the innate and specific immune response in both infectious processes were investigated. Both strains were able to improve resistance against the intestinal pathogen. Only Lr05 was able to induce a significant decrease in the number of S. pneumoniae in the lung, prevent its dissemination into the blood and induce a significant increase in Th1 (INF-γ) and Th2 (IL-6, IL-4 and IL-10) cytokine levels in the bronchoalveolar lavages (BAL). The changes in the cytokines profiles in BAL were associated with an increase in the number and activity of phagocytic cells and with the increase in specific antibodies in serum and BAL, which would explain the increased resistance to the challenge. The administration of Lr06 did not induce significant effects at the respiratory mucosal level. The results described in the present paper showed that certain LAB strains can share certain functional properties, although some of them can perform a functional role better than others, so that it is important to perform careful studies on specific strains, according to their therapeutic use.
Fil: Salva, Maria Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Villena, Julio Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Fil: Alvarez, Gladis Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Subject
LACTOBACILLUS RHAMNOSUS
CYTOKINES
INTESTINAL INFECTIONS
RESPIRATORY INFECTIONS
IMMUNOMODULATION
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/42877