RT info:eu-repo/semantics/article T1 Prospective, randomized, double-blind parallel group nutritional study to evaluate the effects of routine intake of fresh vs. pasteurized yogurt on the immune system in healthy adults A1 Rivero Pino, Fernando A1 Casquete Anta, María del Mar A1 Castro Alija, María José A1 Redondo del Río, María Paz A1 Gutiérrez San José, Eloina A1 Mayo Iscar, Agustín A1 Nocito Colón, Mercedes A1 Corell Almuzara, Alfredo K1 Food - Biotechnology K1 Alimentos - Biotecnología K1 Food science K1 Yogurt K1 Yogur - Fabricación K1 Productos lácteos K1 Dairy products K1 Gut microbiota K1 Microbiota intestinal K1 Microbiota K1 Probiotics K1 Probióticos K1 Lactobacillus K1 Lactobacilos - Uso terapéutico K1 Inmunology K1 Microbiology K1 Nutrition K1 Dietetics K1 Dietética K1 3206 Ciencias de la Nutrición K1 3309 Tecnología de Los Alimentos K1 3108.01 Bacterias K1 2412 Inmunología K1 2414 Microbiología AB The immune system is affected by the dietary products humans intake. Immune system regulation by nutrition has uses in the clinical context, but it can also benefit healthy populations by delaying or preventing the emergence of immune-mediated chronic illnesses. In this study, the purpose was to describe and compare the modulator effects on the immune system of the routine ingestion of fresh vs. pasteurized yogurt. A unicentral, prospective, randomized, double-blind, parallel group 8-week nutritional study was carried out comparing the ingestion of 125 g of the products in healthy adults three times a day. A complete battery of in vitro tests on the activity of the immune system, processes and phenomena was performed. Exclusive immune-modulatory effects of fresh yogurt with respect to base line were found in terms of increased systemic IgM (primary immune responses), increased synthesis of IFN-gamma upon stimulation (Th1) and increased peripheral T cells (mainly “naive” CD4s). In the three interventions, we observed an increased phagocytic activity and burst test in granulocytes, together with increased secretion of IL-6, IL-1 β and IL-8 (pro-inflammatory) and increased CD16 expression (FcR favoring phagocytosis) in granulocytes. Overall, it is concluded that regardless of bacteria being alive or thermally inactivated, yogurt has common effects on the innate system, but the presence of live bacteria is necessary to achieve a potentiating effect on the specific immune response. PB MDPI SN 2072-6643 YR 2024 FD 2024 LK https://uvadoc.uva.es/handle/10324/68228 UL https://uvadoc.uva.es/handle/10324/68228 LA eng NO Nutrients, 2024, Vol. 16, Nº. 12, 1969 NO Producción Científica DS UVaDOC RD 24-nov-2024