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colonization is not mediated by bile salts and utilizes Stickland fermentation of proline in an model.
mSphere
January 2025
Department of Food Science and Technology and Nebraska Food for Health Center, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.
Treatment with antibiotics is a major risk factor for infection, likely due to depletion of the gastrointestinal microbiota. Two microbiota-mediated mechanisms thought to limit colonization include the conversion of conjugated primary bile salts into secondary bile salts toxic to growth and competition between the microbiota and for limiting nutrients. Using a continuous flow model that simulates the nutrient conditions of the distal colon, we investigated how treatment with 6 clinically used antibiotics influenced susceptibility to infection in 12 different microbial communities cultivated from healthy individuals.
View Article and Find Full Text PDFAdaptation of clinical bacteriology techniques for remote polar research.
Appl Environ Microbiol
January 2025
Clinical Infection Department, Chelsea and Westminster Hospital NHS Foundation Trust, London, United Kingdom.
Unlabelled: Remote polar regions offer unique opportunities and significant challenges for antimicrobial resistance research in a near-pristine environment. While core microbiology techniques continue to have an important role in supporting environmental research, the severe cold climate presents considerable challenges to laboratory research. We explore adaptations required for core bacteriology investigations in polar regions on an unsupported remote expedition c.
View Article and Find Full Text PDFBeauveria felina Accelerates Growth When Competing With Other Potential Endophytes.
Environ Microbiol Rep
February 2025
Department of Systematic and Environmental Botany, Faculty of Biology, Adam Mickiewicz University, Poznań, Poland.
The fungus Beauveria felina is often classified as one of the so-called good biocontrol agents. However, no information is available about the growth of this entomopathogenic fungus in the presence of other endophytic fungi, which are usually found in plant tissues. Effects of fungal interactions vary from inhibiting the activity of a biocontrol agent to stimulating its effect on the targeted pathogen.
View Article and Find Full Text PDFSynergistic and off-target effects of bacteriocins in a simplified human intestinal microbiome: implications for infection control.
Gut Microbes
December 2025
APC Microbiome Ireland, University College Cork, Cork, Ireland.
is a major cause of nosocomial diarrhea. As current antibiotic treatment failures and recurrence of infections are highly frequent, alternative strategies are needed for the treatment of this disease. This study explores the use of bacteriocins, specifically lacticin 3147 and pediocin PA-1, which have reported inhibitory activity against .
View Article and Find Full Text PDFCorrelation of fecal microbiome dysregulation to synovial transcriptome in an equine model of obesity associated osteoarthritis.
Ann Transl Med
December 2024
Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO, USA.
Background: Osteoarthritis (OA) is increasingly thought to be a multifactorial disease in which sustained gut inflammation serves as a continued source of inflammatory mediators driving degenerative processes at distant sites such as joints. The objective of this study was to use the equine model of naturally occurring obesity associated OA to compare the fecal microbiome in OA and health and correlate those findings to differential gene expression synovial fluid (SF) cells, circulating leukocytes and cytokine levels (plasma, SF) towards improved understanding of the interplay between microbiome and immune transcriptome in OA pathophysiology.
Methods: Feces, peripheral blood mononuclear cells (PBMCs), and SF cells were isolated from healthy skeletally mature horses (n=12; 6 males, 6 females) and those with OA (n=6, 2 females, 4 males).
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