A mixture of four dietary fibres ameliorates adiposity and improves metabolic profile and intestinal health in cafeteria-fed obese rats: an integrative multi-omics approach.

The aim of this study was to assess the effects of a mixture of four dietary fibers on obese rats. Four groups of male Wistar rats were fed with either standard chow (STD) or cafeteria diet (CAF) and were orally supplemented with either fibre mixture (2 g kg-1 of body weight) (STD+F or CAF+F groups) or vehicle (STD+VH or CAF+VH groups). We studied a wide number of biometric, biochemical, transcriptomic, metagenomic and metabolomic variables and applied an integrative multivariate approach based on multiple factor analysis and Pearson's correlation analysis. A significant reduction in body weight, adiposity, HbA1c and HDL-cholesterol serum levels, and colon MPO activity was observed, whereas cecal weight and small intestine length:weight ratio were significantly increased in F-treated groups compared to control animals. CAF+F rats displayed a significant enhancement in energy expenditure, fat oxidation and fresh stool weight, and a significant reduction in adiponectin and LPS serum levels, compared to control group. Animals in STD+F group showed reduced serum LDL-cholesterol levels and a significant reduction in total cholesterol levels in the liver compared to STF+VH group. The intervention effect was reflected at the metabolomic (i.e., production of short-chain fatty acids, phenolic acids, and amino acids), metagenomic (i.e., modulation of Ruminococcus and Lactobacillus genus) and transcriptomic (i.e., expression of tight junctions and proteolysis) levels. Altogether, our integrative multi-omics approach highlights the potential of supplementation with a mixture of fibers to ameliorate the impairments triggered by obesity in terms of adiposity, metabolic profile, and intestinal health.

[Bifidobacterium longum subsp. infantis CECT 7210 (B. infantis IM-1®) shows activity against intestinal pathogens]. / Bifidobacterium longum subsp. infantis CECT 7210 (B. infantis IM-1®) muestra actividad frente a patógenos intestinales.

Introduction: Diarrhea caused by severe acute gastroenteritis is one of the main causes of infant mortality in children under 5 years of age. Therefore, it is interesting to perform a preclinical and clinical validation of the efficacy of B. longum subsp. infantis IM-1® against various gastrointestinal pathogens. B. infantis IM-1® was evaluated against different gastrointestinal pathogens that cause diarrhea in infants, using in vitro models, animal models, and clinical studies. B. infantis IM-1® is able in an in vitro model of MA-104 and HT-29 cells to inhibit rotavirus replication (up to 36.05%) as well as to protect cells from infection due to rotavirus (up to 48.50 %). An 11-amino acid peptide (MHQPHQPLPPT) with a molecular mass of 1,282 KDa produced by this probiotic with antirotaviral capacity has been identified. In a murine model, the IM-1® strain has been shown to provide in vivo protection against rotavirus infection. In adhesion experiments with HT29, IM-1® was able to displace some pathogens from the enterocyte, especially Cronobacter sakazakii and Salmonella enterica, and prevent the adhesion of C. sakazakii and Shigella sonnei. In a clinical study with 190 babies under 3 months of age, IM-1® reduced episodes of diarrhea, being safe, well tolerated and associated with a lower prevalence of constipation. B. infantis IM-1® is a safe, well tolerated and effective probiotic in reducing episodes of diarrhea caused by the main gastrointestinal pathogens in infants.

Introducción: La diarrea causada por gastroenteritis agudas graves es una de las principales causas de mortalidad infantil en niños menores de 5 años. Por ello es interesante realizar una validación preclínica y clínica de la eficacia de B. longum subsp. infantis IM-1® frente a diversos patógenos gastrointestinales. El B. infantis IM-1® fue evaluado frente a diferentes patógenos gastrointestinales causantes de diarrea en bebés utilizando modelos in vitro, modelos animales y estudios clínicos. B. infantis IM-1® es capaz en un modelo in vitro de células MA-104 y HT-29 de inhibir la replicación de rotavirus (hasta un 36,05 %), así como de proteger las células de la infección por rotavirus (hasta un 48,50 %). Se ha identificado un péptido de 11 aminoácidos (MHQPHQPLPPT) con una masa molecular de 1282 KDa producido por este probiótico con capacidad antirotaviral. En un modelo murino, la cepa IM-1® ha demostrado proporcionar protección in vivo contra la infección por rotavirus. En experimentos de adhesión con HT29, IM-1® fue capaz de desplazar algunos patógenos del enterocito, especialmente C. sakazakii y Salmonella entérica, e impedir la adhesión de C. sakazakii y Shigella sonnei. En un estudio clínico con 190 bebés de menos de 3 meses de edad IM-1® redujo los episodios de diarrea. Fue seguro, se toleró bien y se asoció con una menor prevalencia de estreñimiento. B. infantis IM-1® es un probiótico seguro, que se tolera bien y es eficaz en la reducción de los episodios de diarrea causados por los principales patógenos gastrointestinales en bebés.

Bifidobacterium longum subsp. infantis CECT 7210 (B. infantis IM-1®) muestra actividad frente a patógenos intestinales / Bifidobacterium longum subsp. infantis CECT 7210 (B. infantis IM-1®) shows activity against intestinal pathogens

La diarrea causada por gastroenteritis agudas graves es una de las principales causas de mortalidad infantil en niños menores de 5 años. Por ello es interesante realizar una validación preclínica y clínica de la eficacia de B. longum subsp. infantis IM-1® frente a diversos patógenos gastrointestinales. El B. infantis IM-1® fue evaluado frente a diferentes patógenos gastrointestinales causantes de diarrea en bebés utilizando modelos in vitro, modelos animales y estudios clínicos.B. infantis IM-1® es capaz en un modelo in vitro de células MA-104 y HT-29 de inhibir la replicación de rotavirus (hasta un 36,05 %), así como de proteger las células de la infección por rotavirus (hasta un 48,50 %). Se ha identificado un péptido de 11 aminoácidos (MHQPHQPLPPT) con una masa molecular de 1282 KDa producido por este probiótico con capacidad antirotaviral. En un modelo murino, la cepa IM-1® ha demostrado proporcionar protección in vivo contra la infección por rotavirus. En experimentos de adhesión con HT29, IM-1® fue capaz de desplazar algunos patógenos del enterocito, especialmente C. sakazakii y Salmonella entérica, e impedir la adhesión de C. sakazakii y Shigella sonnei. En un estudio clínico con 190 bebés de menos de 3 meses de edad IM-1® redujo los episodios de diarrea. Fue seguro, se toleró bien y se asoció con una menor prevalencia de estreñimiento.B. infantis IM-1® es un probiótico seguro, que se tolera bien y es eficaz en la reducción de los episodios de diarrea causados por los principales patógenos gastrointestinales en bebés. (AU)

Diarrhea caused by severe acute gastroenteritis is one of the main causes of infant mortality in children under 5 years of age. Therefore, it is interesting to perform a preclinical and clinical validation of the efficacy of B. longum subsp. infantis IM-1R against various gastrointestinal pathogens. B. infantis IM-1R was evaluated against different gastrointestinal pathogens that cause diarrhea in infants, using in vitro models, animal models, and clinical studies.B. infantis IM-1R is able in an in vitro model of MA-104 and HT-29 cells to inhibit rotavirus replication (up to 36.05%) as well as to protect cells from infection due to rotavirus (up to 48.50 %). An 11-amino acid peptide (MHQPHQPLPPT) with a molecular mass of 1,282 KDa produced by this probiotic with antirotaviral capacity has been identified. In a murine model, the IM-1R strain has been shown to provide in vivo protection against rotavirus infection. In adhesion experiments with HT29, IM-1R was able to displace some pathogens from the enterocyte, especially Cronobacter sakazakii and Salmonella enterica, and prevent the adhesion of C. sakazakii and Shigella sonnei. In a clinical study with 190 babies under 3 months of age, IM-1R reduced episodes of diarrhea, being safe, well tolerated and associated with a lower prevalence of constipation.B. infantis IM-1R is a safe, well tolerated and effective probiotic in reducing episodes of diarrhea caused by the main gastrointestinal pathogens in infants. (AU)