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A Mixture of Lactobacillus Plantarumcect 7315 and CECT Nutr Hosp. 2011;26(1):228-235 ISSN 0212-1611 • CODEN NUHOEQ S.V.R. 318 Original A mixture of Lactobacillus plantarum CECT 7315 and CECT 7316 enhances systemic immunity in elderly subjects. A dose-response, double-blind, placebo-controlled, randomized pilot trial J. Mañé1,2*, E. Pedrosa1,2*, V. Lorén1,2, M. A. Gassull1,2, J. Espadaler3, J. Cuñé3, S. Audivert3, M. A. Bonachera3 and E. Cabré1,2,4 1Institute for Research in Health Sciences “Germans Trias i Pujol”. Badalona. Catalonia. Spain. 2Centro de Investigaciones Biomédicas en Red de Enfermedades Hepáticas y Digestivas (CIBERehd). Barcelona. Spain. 3AB-Biotics. Cerdanyola del Vallès. Catalonia. Spain. 4Department of Gastroenterology. Hospital Universitari “Germans Trias i Pujol”. Badalona. Catalonia. Spain. *Contributed equally to the work. Abstract UNA MEZCLA DE LACTOBACILLUS PLANTARUM CECT 7315 Y CECT 7316 MEJORA LA INMUNIDAD Background & aim: Immunosenescence can increase SISTÉMICA EN ANCIANOS. UN ENSAYO morbi-mortality. Lactic acid producing bacteria may ALEATORIO PILOTO, DE DOSIS-RESPUESTA, improve immunity and reduce morbidity and mortality DOBLE CIEGO Y CONTROLADO CON PLACEBO in the elderly. We aimed to investigate the effects of a mix- ture of two new probiotic strains of Lactobacillus plan- tarum —CECT 7315 and 7316— on systemic immunity Resumen in elderly. Methods: 50 institutionalized elderly subjects were Introducción y objetivos: La inmunosenescencia puede randomized, in a double-blind fashion, to receive for 12 aumentar la morbi-mortalidad. Las bacterias producto- weeks 1) 5·108 cfu/day of L. plantarum CECT7315/7316 ras de ácido láctico pueden mejorar la inmunidad y dis- (“low probiotic dose”) (n = 13), 2) 5·109 cfu/day of the pro- minuir la morbilidad y mortalidad en los ancianos. Nues- biotic mixture (“high probiotic dose”) (n = 19), or 3) tro objetivo fue investigar los efectos de una mezcla de dos placebo (n = 15). Leukocyte subpopulations, and cytokine nuevas cepas probióticas de Lactobacillus plantarum levels (IL-1 , IL-10, TGF-β1) were measured in venous —CECT 7315 y 7316— sobre la inmunidad sistémica en blood at baseline, end of treatment (week 12), and end of ancianos. follow-up (week 24). Infection and survival rates were Métodos: 50 ancianos institucionalizados se aleatoriza- recorded. ron, en un diseño a doble-ciego, para recibir durante 12 Results: After treatment, high probiotic dose resulted in semanas 1) 5·108 ufc/día de L. plantarum CECT7315/ 7316 significant increases in the percentages of activated poten- (“dosis baja de probiótico”) (n = 13), 2) 5·109 ufc/día de la tially T-suppressor (CD8+CD25+) and NK (CD56+ mezcla probiótica (“dosis alta de probiótico”) (n = 19), o 3) CD16+) cells, while low probiotic dose increased activated placebo (n = 15). Se determinaron las subpoblaciones leu- T-helper lymphocytes (CD4+CD25+), B lymphocytes cocitarias y los niveles de citokinas (IL-1 , IL-10, TGF-β1) (CD19+), and antigen presenting cells (HLA-DR+). Also, en sangre venosa periférica basalmente, al final del trata- plasma TGF-β1 concentration significantly decreased miento (sem. 12) y al final del seguimiento (sem. 24). Se after treatment with both probiotic doses. Most of these registró la tasa de infecciones y la mortalidad. changes remained 12 weeks after probiotic discontinua- Resultados: Tras el tratamiento, la dosis alta de pro- tion. Incidence of infections during treatment showed a biótico indujo aumentos significativos en los porcentajes significant trend to be lower in the high probiotic dose de células potencialmente T-supresoras (CD8+CD25+) y group. In addition, there was a significant trend for mor- NK (CD56+CD16+) activadas, en tanto que la dosis baja aumento los linfocitos T-colaboradores activados (CD4+CD25+), los linfocitos B (CD19+), y las células pre- sentadoras de antígeno (HLA-DR+). Asimismo, la con- Correspondence: Eduard Cabré. β Department of Gastroenterology. centración plasmática de TGF- 1 disminuyó tras el trata- Hospital Universitari Germans Trias i Pujol. miento con ambas dosis de probiótico. La mayor parte de Carretera del Canyet, s/n. estos cambios se mantuvieron 12 semanas después de sus- 08916 Badalona. Spain. pender el tratamiento. La incidencia de infecciones E-mail: [email protected] durante el tratamiento mostró una tendencia significativa Recibido: 1-XI-2010. a ser menor con la dosis alta de probiótico, mientras que Aceptado: 5-XI-2010. se observó una tendencia significativa a que la mortalidad 228 tality to be greater in the placebo group vs. both probiotic fuera mayor el grupo placebo vs. ambos grupos tratados groups. con probiótico. Conclusions: Depending on the dose, L. plantarum Conclusiones: Dependiendo de la dosis, L. plantarum CECT7315/7316 have different immune-enhancing CECT7315/7316 tiene distintos efectos inmunoestimulan- effects in elderly subjects. These effects might result in a tes en ancianos. Dichos efectos podrían contribuir a una better clinical outcome. mejor evolución clínica. (Nutr Hosp. 2011;26:228-235) (Nutr Hosp. 2011;26:228-235) DOI:10.3305/nh.2011.26.1.5112 DOI:10.3305/nh.2011.26.1.5112 Key words: Immune cells. Cytokines. Aging. Probiotics. Palabras clave: Inmunocitos. Citokinas. Envejecimiento. Pro- Lactobacillus plantarum. bióticos. Lactobacillus plantarum. Introduction ing fermented milk with Lactobacillus casei DN- 114001 reduce the duration of upper respiratory tract Some lactic acid bacteria strains are defined as pro- infections.25,26 Therefore, functional foods containing biotic as far as they are able to confer a variety of physi- probiotics might have a particular applicability in ologic benefits to the host.1 Dietary supplementation elderly population. with certain Bifidobacteria and Lactobacilli strains has The present study primarily aimed to investigate the been proven to be useful in the management of several effects on systemic immunity of a mixture of two new gastrointestinal disorders such as acute infectious and probiotic strains of Lactobacillus plantarum —CECT antibiotic associated diarrhea in children2,3 and adults,4 7315 and CECT 7316— at two different dosages, in ulcerative colitis,5-9 pouchitis,10,11 and irritable bowel institutionalized elderly subjects by means of a ran- syndrome.12,13 Also, they have been reported to be use- domized, double-blind, placebo-controlled pilot trial. ful in protecting children from allergic illnesses,14,15 and Clinical outcomes including infection and survival in the prevention of bacterial, fungal or viral infec- rates were also recorded. tions.16,17 Human studies have revealed that probiotic bacteria can have an influence on the host’s immune system. Subjects and methods Some components of the immune response, including phagocytosis, natural killer (NK) cell activity and Probiotic strains mucosal IgA production (especially in children), can be improved by some probiotic bacteria.18,19 Other com- Two new strains of L. plantarum showing probiotic ponents, including lymphocyte proliferation, the pro- properties27 (CARINSA, Barcelona, Spain) were used duction of cytokines and antibodies other than IgA in this trial. They were originally isolated from the appear less sensitive to probiotics.18,19 feces of an infant, and identified in the Spanish Collec- It is well characterized that aging involves an involu- tion of Type Cultures (CECT) as CECT 7315 and tion and decreases the capacity to mediate effective CECT 7316. Both strains showed a high survival rate immune responses to vaccination and invading both in acidic conditions and in presence of bile acids pathogens.20,21 Immunosenescence has been associated in vitro.27 Also, they showed a high capacity of adher- to a decrease of mature T cell numbers, changes of NK ence to pig intestinal cells in culture, doubling those of and dendritic cell proportions, and loss of diversity of L. reuteri and L. rhamnosus GG, and their pathogen B cells in the blood of the elderly.20,22 Moreover, aging antagonism is quite similar to that of L. rhamnosus causes a decline in cell-mediated cytotoxic and phago- GG27. For the purposes of the present trial both strains cytic responses, and increases circulating levels of were mixed at a 1:1 ratio. proinflammatory cytokines.20 Clinically, these changes potentially increase morbidity and mortality in elderly individuals through an increased rate of infections, Subjects and trial design malignancy, and autoimmunity-related disorders.21 Intervention trials in elderly subjects have shown This trial was conducted, in winter 2006 and spring that oral supplementation with Bifidobacterium lactis 2007, in subjects older than 65, institutionalized in two HN019 significantly increases the proportion of total, geriatric centers in the metropolitan area of Barcelona, helper (CD4+) and activated (CD25+) lymphocytes in Spain: “Llars Mundet” (Barcelona, Spain) and “Centre peripheral blood.23 In addition, Lactobacillus rhamno- Assistencial Dr. Emili Mira” (Sta. Coloma de Gramenet, sus HN001 enhanced the ex vivo phagocytic capacity Spain). Exclusion criteria were 1) suffering from any of polymorphonuclear leukocytes, as well as the tumo- acute illness during the previous month, 2) having a ricidal activity of NK cells in these individuals.24 Fur- neoplastic disease, 3) a life expectancy lower than 6 thermore, it has been shown that elderly people receiv- months, 4) documented intolerance to milk or dairy Lactobacillus plantarum CECT 7315 Nutr Hosp. 2011;26(1):228-235 229 y CECT 7316 en ancianos products, 5) swallowing disturbances, and 6) use of typic assessment
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