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Hybrid strains of enterotoxigenic/Shiga toxin-producing , United Kingdom, 2014-2023.
J Med Microbiol
January 2025
NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK.
Diarrhoeagenic (DEC) pathotypes are defined by genes located on mobile genetic elements, and more than one definitive pathogenicity gene may be present in the same strain. In August 2022, UK Health Security Agency (UKHSA) surveillance systems detected an outbreak of hybrid Shiga toxin-producing /enterotoxigenic (STEC-ETEC) serotype O101:H33 harbouring both Shiga toxin () and heat-stable toxin (). These hybrid strains of DEC are a public health concern, as they are often associated with enhanced pathogenicity.
View Article and Find Full Text PDFShiga Toxin: Emerging Producer Strains, Prophylactic Approaches, and Application in Cancer Therapy.
J Cancer Prev
December 2024
Infectious Disease Research Center, Avicenna Institute of Clinical Sciences, Hamadan, IranAvicenna Health Research Institute, Hamadan University of Medical Sciences, Hamadan, Iran.
Shiga toxin-producing is the most prevalent bacterial strain responsible for Shiga toxin-related infections. While Shiga toxin is inherently toxic, it has potential therapeutic applications as a component of anticancer drugs. Despite its association with infections and harmful effects on human health, Shiga toxin is being explored as a viable element in drug delivery systems targeting cancer cells.
View Article and Find Full Text PDFReduction in Renal Heme Oxygenase-1 Is Associated with an Aggravation of Kidney Injury in Shiga Toxin-Induced Murine Hemolytic-Uremic Syndrome.
Toxins (Basel)
December 2024
Department of Anesthesiology and Intensive Care Medicine, Jena University Hospital, Am Klinikum 1, 07747 Jena, Germany.
Hemolytic-uremic syndrome (HUS) is a systemic complication of an infection with Shiga toxin (Stx)-producing enterohemorrhagic , primarily leading to acute kidney injury (AKI) and microangiopathic hemolytic anemia. Although free heme has been found to aggravate renal damage in hemolytic diseases, the relevance of the heme-degrading enzyme heme oxygenase-1 (HO-1, encoded by ) in HUS has not yet been investigated. We hypothesized that HO-1 also important in acute phase responses in damage and inflammation, contributes to renal pathogenesis in HUS.
View Article and Find Full Text PDFColicin Immunity Proteins of Pathogenic Bacteria Detected by Antibiotic-Induced SOS Response, Plasmid Sequencing, MALDI-TOF-TOF Mass Spectrometry, and Top-Down Proteomic Analysis.
Rapid Commun Mass Spectrom
March 2025
US Department of Agriculture, Produce Safety and Microbiology, Western Regional Research Center, Agricultural Research Service, Albany, California, USA.
Rationale: Plasmids can play a major role in the survival of pathogenic bacteria. Plasmids are acquired through horizontal gene transfer resulting in their spread across various strains, species and genera of bacteria. Colicins are bacterial protein toxins expressed by plasmid genes and released against co-located bacterial competitors.
View Article and Find Full Text PDFcDNA Display Selection of Interacting Peptide Ligands of the Guanylate Cyclase C Receptor.
J Pept Sci
January 2025
Graduate School of Bioscience, Nagahama Institute of Bio-Science and Technology, Nagahama, Shiga, Japan.
Guanylate cyclase C (GC-C), a receptor expressed on the apical membrane of intestinal mucosal cells, is activated by heat-stable enterotoxin (STa) produced by enterotoxigenic Escherichia coli, as well as the endogenous ligands guanylin and uroguanylin. In this study, novel peptides that interact with GC-C were generated using the cDNA display method, and their binding affinity and biological activity were evaluated. While the linear peptide library did not yield peptides with sufficient affinity for GC-C, three cyclic peptides (GCC-P1, GCC-P2, and GCC-P3), each containing two cysteine residues within a 15-residue sequence, were obtained from a cyclic peptide library containing nine-residue random sequences.
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