Results 51 to 60 of about 47,448 (187)

Gut Symbiont Bacteroides fragilis Secretes a Eukaryotic-Like Ubiquitin Protein That Mediates Intraspecies Antagonism

mBio, 2017
Human gut Bacteroides species produce different types of toxins that antagonize closely related members of the gut microbiota. Some are toxic effectors delivered by type VI secretion systems, and others are non-contact-dependent secreted antimicrobial ...
Maria Chatzidaki-Livanis, Michael J. Coyne, Kevin G. Roelofs, Rahul R. Gentyala, Jarreth M. Caldwell, Laurie E. Comstock   +5 more
doaj   +1 more source

Aggregation by fragilis and non-fragilis Bacteroides strains in vitro [PDF]

Journal of Medical Microbiology, 1989
Bacteroides fragilis is associated with the formation of intra-abdominal abscesses, whereas other Bacteroides species are rarely involved. Since bacterial clumping may contribute to the survival of bacteria in the face of host defence mechanisms, the hypothesis has been put forward that differences in aggregation between fragilis and non-fragilis ...
M, Blake, O D, Rotstein, M, Llano, M J, Girotti, G, Reid   +4 more
openaire   +2 more sources

In Vitro Evaluation of Propolis Effects on Bacteroides fragilis Toxin-mediated Inflammatory Pathways

Korean Journal of Clinical Laboratory Science
Colorectal cancer (CRC) remains a significant global health concern because of its increasing incidence and mortality rates. Chronic intestinal inflammation is a critical driver in the pathogenesis of CRC, particularly in individuals with inflammatory ...
Soonjae HWANG, Yeram LEE, Ki-Jong RHEE
doaj   +1 more source

Complete genome sequence of a Bacteroides fragilis bacteriophage, vB_BfrS_NCTC [PDF]

, 2021
Bacteroides fragilis is an obligate anaerobe and a common gut commensal bacterium that is also an important opportunistic pathogen. Here, we present the complete genome sequence of the circularly permuted B. fragilis bacteriophage vB_BfrS_NCTC.
Tariq, Mohammad A., Carding, Simon R.
core   +1 more source

Characterization of a Multidrug-Resistant, Novel Bacteroides Genomospecies

Emerging Infectious Diseases, 2015
Metronidazole- and carbapenem-resistant Bacteroides fragilis are rare in the United States. We isolated a multidrug-resistant anaerobe from the bloodstream and intraabdominal abscesses of a patient who had traveled to India.
Stephen J. Salipante, Aley Kalapila, Paul S. Pottinger, Daniel R. Hoogestraat, Lisa Cummings, Jeffrey S. Duchin, Dhruba J. Sengupta, Steven A. Pergam, Brad T. Cookson, Susan M. Butler-Wu   +9 more
doaj   +1 more source

Superoxide dismutase in Bacteroides fragilis and related Bacteroides species [PDF]

Journal of Clinical Microbiology, 1977
Superoxide dismutase (SOD) activity was demonstrated in cell-free extracts of Bacteroides fragilis, Bacteroides vulgatus, Bacteroides distasonis, Bacteroides ovatus, and Bacteroides thetaiotaomicron. The strains were grown under anaerobic conditions in Trypticase soy broth, and the specific activity of SOD in the extracts was, in most strains, higher ...
J, Carlsson, J, Wrethén, G, Beckman
openaire   +2 more sources

Requirement of heme for growth of Bacteroides fragilis [PDF]

Applied and Environmental Microbiology, 1977
Heme or protoporphyrin IX was required for growth of Bacteroides fragilis in a defined medium. The amount of heme necessary for half-maximal growth was 2 to 10 ng/ml (3.8 to 15 pmol/ml) among the Bacteroides species and strains tested. The growth rate, metabolic products from glucose fermentation, and cell yields were affected by the concentration of ...
J F, Sperry, M D, Appleman, T D, Wilkins
openaire   +2 more sources

Fecal detection of enterotoxigenic Bacteroides fragilis [PDF]

European Journal of Clinical Microbiology & Infectious Diseases, 2015
Bacteroides fragilis is a common colonic symbiote of which one subtype, enterotoxigenic Bacteroides fragilis (ETBF), causes inflammatory diarrhea. However, asymptomatic ETBF colonization is common. Through its primary virulence factor, B. fragilis toxin (BFT), ETBF causes asymptomatic, chronic colitis in C57BL/6 mice and increased colon tumorigenesis ...
L A, Chen, S, Van Meerbeke, E, Albesiano, A, Goodwin, S, Wu, H, Yu, K, Carroll, C, Sears   +7 more
openaire   +2 more sources

Antimicrobial resistance in the Bacteroides fragilis group: National multicenter survey and Bayesian modelling study, France, 2022–2023

Journal of Global Antimicrobial Resistance
Objectives: Epidemiological studies on Bacteroides fragilis group (BFG) species and their antimicrobial resistance (AMR) profiles remain scarce worldwide and are lacking in France.
Gauthier Delvallez, Pascal Campagne, Corentine Alauzet, Laure Diancourt, Frédéric Barbut, Hélène Marchandin, Bruno Dupuy   +6 more
doaj   +1 more source

Early intestinal Bacteroides fragilis colonisation and development of asthma

BMC Pulmonary Medicine, 2008
Background The 'hygiene hypothesis' suggests that early exposure to microbes can be protective against atopic disease. The intestinal microbial flora could operate as an important postnatal regulator of the Th1/Th2 balance.
Goossens Herman, Verhulst Stijn L, Nelen Vera, Vael Carl, Desager Kristine N   +4 more
doaj   +1 more source