Search results for "Rothia aeria"

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Commensal Bacterium Rothia aeria Degrades and Detoxifies Gluten via a Highly Effective Subtilisin Enzyme

2020

Celiac disease is characterized by a chronic immune-mediated inflammation of the small intestine, triggered by gluten contained in wheat, barley, and rye. Rothia aeria, a gram-positive natural colonizer of the oral cavity and the upper digestive tract is able to degrade and detoxify gluten in vitro. The objective of this study was to assess gluten-degrading activity of live and dead R. aeria bacteria in vitro, and to isolate the R. aeria gluten-degrading enzyme. Methods: After an overnight fast, Balb/c mouse were fed a 1 g pellet of standard chow containing 50% wheat (and 4% gliadin) with or without 1.6 &times

0301 basic medicinelcsh:TX341-641detoxifymedicine.disease_causedigestive systemBacterial cell structure<i>Rothia</i>Microbiology03 medical and health sciences0302 clinical medicinemedicineZymographydegradationchemistry.chemical_classificationepitopeNutrition and DieteticsbiologyRothia aeria<i>Bacillus</i>food and beveragesnutritional and metabolic diseasesbiology.organism_classificationGlutenneutralizecuredigestive system diseasesEnzyme assay030104 developmental biologychemistryglutencommensalbiology.proteinsubtilisin030211 gastroenterology & hepatologyDigestionGliadinlcsh:Nutrition. Foods and food supplyceliac diseaseBacteriaFood ScienceNutrients
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The cultivable human oral gluten-degrading microbiome and its potential implications in coeliac disease and gluten sensitivity

2013

AbstractCoeliac disease is characterized by intestinal inflammation caused by gluten, proteins which are widely contained in the Western diet. Mammalian digestive enzymes are only partly capable of cleaving gluten, and fragments remain that induce toxic responses in patients with coeliac disease. We found that the oral microbiome is a novel and rich source of gluten-degrading organisms. Here we report on the isolation and characterization of the cultivable resident oral microbes that are capable of cleaving gluten, with special emphasis on the immunogenic domains. Bacteria were obtained by a selective culturing approach and enzyme activities were characterized by: (i) hydrolysis of paranitr…

Microbiology (medical)GlutensDental Plaquemedicine.disease_causeCoeliac diseaseArticleMicrobiologyoral bacteriaStreptococcus mitismedicineActinomycesHumansSalivadegradationchemistry.chemical_classificationbiologyBacteriaCoeliac diseaseMicrobiotaRothia aeriaNeisseria mucosaStreptococcusnutritional and metabolic diseasesGeneral Medicinebiology.organism_classificationmedicine.diseaseCapnocytophagaGlutendigestive system diseasesCeliac DiseaseInfectious DiseaseschemistryBiochemistrybiology.proteingliadinproteasesGliadinRothia mucilaginosaCapnocytophagaActinomycesClinical Microbiology and Infection
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