Stephen B. Troxell

Works (5)

Updated: July 5th, 2023 15:55

2015 journal article

Poultry Body Temperature Contributes to Invasion Control through Reduced Expression of Salmonella Pathogenicity Island 1 Genes in Salmonella enterica Serovars Typhimurium and Enteritidis

Applied and Environmental Microbiology, 81(23), 8192–8201.

By: B. Troxell  n, N. Petri n, C. Daron n, R. Pereira *, M. Mendoza n, H. Hassan n , M. Koci n 

Contributors: B. Troxell  n, N. Petri n, C. Daron n, R. Pereira *, M. Mendoza n, H. Hassan n , M. Koci n 

Ed(s): C. Elkins

MeSH headings : Animals; Cecum / microbiology; Cecum / physiology; Chickens; Genomic Islands; Liver / microbiology; Liver / physiology; Poultry Diseases / genetics; Poultry Diseases / metabolism; Poultry Diseases / microbiology; Salmonella Infections, Animal / genetics; Salmonella Infections, Animal / metabolism; Salmonella Infections, Animal / microbiology; Salmonella enteritidis / genetics; Salmonella enteritidis / physiology; Salmonella typhimurium / genetics; Salmonella typhimurium / physiology; Spleen / microbiology; Spleen / physiology; Temperature
TL;DR: In vivo experiments using chicks demonstrated that numbers of viable S. Typhimurium or S. Enteritidis bacteria within the liver and spleen organ sites were ≥4 orders of magnitude lower than those within the ceca, indicating poor survival within these tissues or a reduced capacity to traverse the host epithelial layer and reach liver/spleen sites or both. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID, Crossref
Added: August 6, 2018

2014 journal article

Ferric Uptake Regulator-Dependent Antinitrosative Defenses in Salmonella enterica Serovar Typhimurium Pathogenesis

INFECTION AND IMMUNITY, 82(1), 333–340.

By: M. Husain*, J. Jones-Carson*, L. Liu *, M. Song *, J. Saah*, B. Troxell  n, M. Mendoza n, H. Hassan n , A. Vazquez-Torresa

MeSH headings : Analysis of Variance; Animals; Bacterial Proteins / immunology; Bacterial Proteins / physiology; Disease Models, Animal; Mice; Nitric Oxide Synthase Type II; Oxidative Stress / physiology; Repressor Proteins / deficiency; Repressor Proteins / immunology; Repressor Proteins / physiology; Salmonella Infections / microbiology; Salmonella Infections / physiopathology; Salmonella typhimurium / immunology; Salmonella typhimurium / pathogenicity; Stress, Physiological / physiology
TL;DR: Investigations indicate that, in addition to playing a critical role in iron homeostasis, Fur is an important antinitrosative determinant of Salmonella pathogenesis. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 review

Metal-dependent gene regulation in the causative agent of Lyme disease

[Review of ]. Frontiers in Cellular and Infection Microbiology, 3.

By: B. Troxell & X. Yang

Source: NC State University Libraries
Added: August 6, 2018

2011 journal article

The Fur regulon in anaerobically grown Salmonella enterica sv. Typhimurium: identification of new Fur targets

BMC MICROBIOLOGY, 11.

By: B. Troxell  n, R. Fink n, S. Porwollik*, M. McClelland * & H. Hassan n 

MeSH headings : Anaerobiosis; Bacterial Proteins / genetics; Bacterial Proteins / metabolism; Gene Expression Regulation, Bacterial; Iron / metabolism; Oxygen / metabolism; Regulon; Repressor Proteins / genetics; Repressor Proteins / metabolism; Salmonella typhimurium / genetics; Salmonella typhimurium / metabolism
TL;DR: This work identified twenty-six new targets of Fur regulation, and demonstrates that H-NS repressed genes are down-regulated in Δfur, indicating that Fur is a positive factor in ftnB regulation, while serving to repress the expression of hmpA. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2007 journal article

FNR is a global regulator of virulence and anaerobic metabolism in Salmonella enterica serovar typhimurium (ATCC 14028s)

JOURNAL OF BACTERIOLOGY, 189(6), 2262–2273.

By: R. Fink n, M. Evans n, S. Porwollik*, A. Vazquez-Torres *, J. Jones-Carson*, B. Troxell  n, S. Libby*, M. McClelland*, H. Hassan n 

MeSH headings : Anaerobiosis; Animals; Bacterial Proteins / genetics; Bacterial Proteins / metabolism; Cells, Cultured; DNA-Binding Proteins / genetics; DNA-Binding Proteins / metabolism; Escherichia coli Proteins / genetics; Gene Expression Profiling; Gene Expression Regulation, Bacterial; Humans; Iron-Sulfur Proteins / genetics; Iron-Sulfur Proteins / metabolism; Macrophages, Peritoneal / microbiology; Mice; Mice, Inbred C57BL; Molecular Sequence Data; Mutation; Oligonucleotide Array Sequence Analysis; Salmonella Infections / microbiology; Salmonella Infections / pathology; Salmonella typhimurium / genetics; Salmonella typhimurium / growth & development; Salmonella typhimurium / metabolism; Salmonella typhimurium / pathogenicity; Transcription Factors / genetics; Transcription Factors / metabolism; Virulence
TL;DR: The role of FNR as a positive regulator of motility, flagellar biosynthesis, and pathogenesis was confirmed by showing that the isogenic fnr mutant is nonmotile, lacks flagella, is attenuated in mice, and does not survive inside macrophages. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

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