Search results for "N-Acetylglucosamine"

showing 3 items of 3 documents

Infant gut microbiota modulation by human milk disaccharides in humanized microbiome mice

2021

Human milk glycans present a unique diversity of structures that suggest different mechanisms by which they may affect the infant microbiome development. A humanized mouse model generated by infant fecal transplantation was utilized here to evaluate the impact of fucosyl-α1,3-GlcNAc (3FN), fucosyl-α1,6-GlcNAc, lacto-N-biose (LNB) and galacto-N-biose on the fecal microbiota and host–microbiota interactions. 16S rRNA amplicon sequencing showed that certain bacterial genera significantly increased (Ruminococcus and Oscillospira) or decreased (Eubacterium and Clostridium) in all disaccharide-supplemented groups. Interestingly, cluster analysis differentiates the consumption of fucosyl-oligosacc…

0301 basic medicineMaleBifidobacterium longuminfant fecal microbiotaMicrobiologiaRC799-869Gut floraAcetatesDisaccharidesFecesMice0302 clinical medicinelacto-n-biosefluids and secretionsRuminococcus gnavusRNA Ribosomal 16SEubacteriumgalacto-n–bioseBifidobacteriumbiologyGastroenterologyDiseases of the digestive system. Gastroenterologylacto-N-biosegalacto-N–biosefucosyl-α-1ButyratesInfectious Diseases030211 gastroenterology & hepatologyFemaleResearch ArticleResearch PaperMicrobiology (medical)AdultDNA Bacterialhumanized mouse modelInfants Malaltiesshort-chain fatty acidsMicrobiologyMicrobiology03 medical and health sciencesfucosyl-α-16-N-acetylglucosamineYoung AdultAnimalsHumans6-n-acetylglucosamineMicrobiomeBacteriaMilk HumanRuminococcusInfant NewbornInfantAkkermansiafucosyl-α-13-N-acetylglucosaminebiology.organism_classificationcytokinesGastrointestinal Microbiome3-n-acetylglucosamineMice Inbred C57BL030104 developmental biologyshort-chain fatty acidscytokineshuman milk oligosaccharides
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Uridine enhances the cytotoxic effect of D-glucosamine in rat C6 glioma cells.

1986

This paper studies the influence of uridine on the effects exerted by D-glucosamine in rat C6 glioma cells. 2 mM uridine increased markedly both the cytotoxic effect of the aminosugar and the inhibition of thymidine incorporation into acid-insoluble fraction. Furthermore the complete resumption of the capacity to incorporate either 3H-thymidine or 3H-mannose which was observed after the removal of the aminosugar, was impeded when the cells were treated contemporaneously with D-glucosamine and uridine. An exposure for 4 hr to 20 mM glucosamine alone enhanced about 15-fold the cellular pool of UDP-N-acetylhexosamines; the addition of 2 mM uridine intensified the expansion of this pool, which …

Cell SurvivalBiologyC6 gliomaGeneral Biochemistry Genetics and Molecular BiologyCell Linechemistry.chemical_compoundGlucosamineGliomamedicineCytotoxic T cellAnimalsGeneral Pharmacology Toxicology and PharmaceuticsCytotoxicityUridineGlucosamineUridine Diphosphate N-AcetylglucosamineDrug SynergismGeneral MedicineGliomamedicine.diseaseMolecular biologyUridineIn vitroRatsBiochemistrychemistryAminosugarcytotoxic effectMannoseThymidineLife sciences
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Unique Microbial Catabolic Pathway for the Human Core N-Glycan Constituent Fucosyl-α-1,6-N-Acetylglucosamine-Asparagine

2020

The survival of commensal bacteria in the human gut partially depends on their ability to metabolize host-derived molecules. The use of the glycosidic moiety of N-glycoproteins by bacteria has been reported, but the role of N-glycopeptides or glycoamino acids as the substrates for bacterial growth has not been evaluated. We have identified in Lactobacillus casei strain BL23 a gene cluster (alf-2) involved in the catabolism of the glycoamino acid fucosyl-α-1,6-N-GlcNAc-Asn (6′FN-Asn), a constituent of the core-fucosylated structures of mammalian N-glycoproteins. The cluster consists of the genes alfHC, encoding a major facilitator superfamily (MFS) permease and the α-l-fucosidase AlfC, and t…

Lactobacillus caseiGlycanMolecular Biology and Physiologyalpha-l-fucosidaseGlycosylasparaginaseMicrobiologiacore fucosylationGut floraMicrobiologydigestive systemFucosylated Nglycopeptideschemistry.chemical_compoundVirologyfucosylated N-glycopeptidesN-AcetylglucosamineHumansAsparagineSymbiosisFucosebiologyHost Microbial InteractionsChemistryProbioticsbiology.organism_classificationMajor facilitator superfamilyQR1-502LactobacilsglycosylasparaginaseCore fucosylationGastrointestinal TractMetabolic pathwayLacticaseibacillus caseiBiochemistryAlpha-L-fucosidaseMultigene Familybiology.proteinAsparagineLactobacillus caseiBacteriaMetabolic Networks and PathwaysResearch Article
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