Publication Date: 2011.
Lactic acid bacteria (LAB) represent a heterogeneous group of microorganisms that are naturally present in many foods and possess a wide range of therapeutic properties. The aim of this paper is to present an overview of the current expanding knowledge of one of the mechanisms by which LAB and other probiotic microorganisms participate in the prevention and treatment of gastrointestinal inflammatory disease through their immune-modulating properties. A special emphasis will be placed on the critical role of the anti-inflammatory cytokine IL-10, and a brief overview of the uses of genetically engineered LAB that produce this important immune response mediator will also be discussed. Thus, this paper will demonstrate the critical role that IL-10 plays in gastrointestinal inflammatory diseases and how probiotics could be used in their treatment.
Author affiliation: de Moreno, Maria Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Author affiliation: del Carmen, Silvina Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Author affiliation: Zurita Turk, Meritxell. Universidade Federal de Minas Gerais; Brasil
Author affiliation: Santos Rocha, Clarissa. Universidade Federal de Minas Gerais; Brasil
Author affiliation: van de Guchte, Maarten. Institut National de la Recherche Agronomique; Francia
Author affiliation: Azevedo, Vasco. Universidade Federal de Minas Gerais; Brasil
Author affiliation: Miyoshi, Anderson. Universidade Federal de Minas Gerais; Brasil
Author affiliation: Leblanc, Jean Guy Joseph. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina
Repository: CONICET Digital (CONICET). Consejo Nacional de Investigaciones Científicas y Técnicas
Authors: Bini, Estela Isabel; Espinosa, Dulce Mata; Castillo, Brenda Marquina; Payán, Jorge Barrios; Colucci, Darío; Cruz, Alejandro Francisco; Zatarain, Zyanya Lucía; Alfonseca, Edgar; Romano Pardo, Marta; Bottasso, Oscar; Hernández Pando, Rogelio
Publication Date: 2014.
The relation between men and women suffering pulmonary tuberculosis is 7/3 in favor to males. Sex hormones could be a significant factor for this difference, considering that testosterone impairs macrophage activation and pro-inflammatory cytokines production, while estrogens are proinflammatory mediator’s inducer. The aim of this work was to compare the evolution of tuberculosis in male and female mice using a model of progressive disease. BALB/c mice, male and female were randomized into two groups: castrated or sham-operated, and infected by the intratracheal route with a high dose of Mycobacterium tuberculosis strain H37Rv. Mice were euthanized at different time points and in their lungs were determined bacilli loads, inflammation, cytokines expression, survival and testosterone levels in serum. Non-castrated male mice showed significant higher mortality and bacilli burdens during late disease than female and castrated male animals. Compared to males, females and castrated males exhibited significant higher inflammation in all lung compartments, earlier formation of granulomas and pneumonia, while between castrated and non-castrated females there were not significant differences. Females and castrated males expressed significant higher TNF-α, IFN γ, IL12, iNOS and IL17 than non-castrated males during the first month of infection. Serum Testosterone of males showed higher concentration during late infection. Orchidectomy at day 60 post-infection produced a significant decrease of bacilli burdens in coexistence with higher expression of TNFα, IL-12 and IFNγ. Thus, male mice are more susceptible to tuberculosis than females and this was prevented by castration suggesting that testosterone could be a tuberculosis susceptibility factor.
Author affiliation: Estela Isabel Bini, Dulce Mata Espinosa, Brenda Marquina Castillo, Jorge Barrios Payán, Alejandro Francisco Cruz, Zyanya Lucía Zatarain, Edgar Alfonseca, Rogelio Hernández Pando Experimental Pathology Section. Department of Pathology, National Institute of Medical Sciences and Nutrition “Salvador Zubirán”, Ciudad de México; México.
Author affiliation: Estela Isabel Bini, Darío Colucci, Oscar Bottasso. Instituto de Inmunología, Facultad de Ciencias Médicas. Universidad Nacional de Rosario; Argentina.
Author affiliation: Marta Romano Pardo Physiology and Biophysic Department. CINVESTAV, Mexico City, Mexico
Repository: RepHipUNR (UNR). Universidad Nacional de Rosario