Influence of the effective microorganisms (EM) on performance, intestinal morphology and gene expression in the jejunal mucosa of pigs fed different diets
JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION
Authors: Reszka, Patrycja; Dunislawska, Aleksandra; Slawinska, Anna; Siwek, Maria; Kapelanski, Wojciech; Bogucka, Joanna
Abstract
The aim of the study was to determine the influence of the effective microorganisms (EM) on performance parameters, intestinal morphology and gene expression in the jejunal mucosa in pigs under different feeding regimes. The study group comprised of 150 piglets divided into three feeding groups: C, E1 and E2. Feeding groups included: C-standard fodder, blend with a full share of post-extracted soy meal, E1-in the phase I of fattening: pea and lupin/soybean 50/50%; in the phase II of fattening: pea and lupin/soybean 75/25%, and E2-in the phase I of fattening: pea and lupin/soybean 50/50%; in the phase II of fattening: pea and lupin 100%. The experimental factor was addition of a probiotic EM Carbon Bokashi to the diets (C + EM, E1 + EM and E2 + EM). After slaughter, histological evaluation and gene expression analysis were performed. The highest intestinal villi were reported in E2 + EM. A higher intestinal absorption area was demonstrated in groups C + EM and E2 + EM. An interaction between feeding and EM Bokashi supplementation was found in villus surface area crypt depth, villus height/crypt depth and number of goblet cells. Mucosa thickness and number of goblet cells was the largest in E2 + EM. Gene expression of FABP4 increased in E1, and GLUT2 decreased in E2. Gene expression of IL10 and FABP4 increased in E2 + EM. The results indicate that the E2 diet is more optimal for EM Bokashi supplementation, because in this group, EM positively influenced the morphological characteristics of the porcine jejunum and caused an increase in the expression of genes related to the metabolism and functioning of the gastrointestinal tract.
T-cells producing multiple combinations of IFN gamma, TNF and IL10 are associated with mild forms of dengue infection
IMMUNOLOGY
Authors: Goncalves Pereira, Marcela Helena; Figueiredo, Maria Marta; Queiroz, Camila Pereira; Barros Magalhaes, Telcia Vasconcelos; Mafra, Adriana; Oliveira Diniz, Lilian Martins; da Costa, Ultimo Libanio; Gollob, Kenneth J.; do Valle Antonelli, Lis Ribeiro; Santiago, Helton da Costa
Abstract
Multifunctional interleukin 10 (IL10)(+)Th1 cells have been implicated in favorable evolution of many infectious diseases, promoting an efficacious immune response while limiting immunopathology. Here, we investigated the presence of multifunctional CD4(+) and CD8(+) T-cells that expressed interferon gamma (IFN gamma), IL10 and tumor necrosis factor (TNF), or its combinations during dengue infection. Peripheral blood mononuclear cells (PBMCs) from outpatients with dengue (mild dengue forms) and hospitalized patients (or patients with dengue with warning signs and severe dengue) were cultured in the presence of envelope (ENV) or NS3 peptide libraries of DENV during critical (hospitalization period) and convalescence phases. The production of IFN gamma, IL10 and TNF by CD4(+) and CD8(+) T-cells was assessed by flow cytometry. Our data show that patients with mild dengue, when compared with patients with dengue with warning signs and severe dengue, presented higher frequencies of multifunctional T-cells like NS3-specific IFN gamma/IL10-producing CD4(+) T-cells in critical phase and NS3- and ENV-specific CD8(+) T-cells producing IFN gamma/IL10. In addition, NS3-specific CD8(+) T-cells producing high levels of IFN gamma/TNF and IFN gamma/TNF/IL10 were also observed in the mild dengue group. We observed that multifunctional T-cells produced higher levels of cytokines as measured by intracellular content when compared with single producer T-cells. Importantly, multifunctional CD4(+) and CD8(+) T-cells producing IFN gamma, TNF and IL10 simultaneously displayed positive correlation with platelet levels, suggesting a protective role of this population. The presence of IL10(+)Th1 and IL10(+)Tc1 multifunctional cells was associated with mild dengue presentation, suggesting that these cells play a role in clinical evolution of dengue infection.