Urinary tract infections are among the most common infectious diseases encountered in humans and Escherichia coli is their leading etiologic agent. Uropathogenic E. coli encompasses a group of bacteria possessing a variable virulence gene assortment. It is generally agreed that many urovirulence factors remain to be discovered and that this information is required to gain knowledge on the pathogenic processes underlying the different clinical presentations of urinary tract infections. The production of higher-molecular-mass microcins, a group of ribosomally-synthesized peptide antibiotics comprising microcins H47, I47, E492, M and ColV, has been proposed as a virulence trait of some uropathogenic E. coli. To study this possibility, clones producing any of these microcins were selected from a collection of 160 Gram-negative clinical isolates from urine cultures and their virulence profile was analyzed. The study consisted in surveying genetic loci known to be relevant to urinary tract infection caused by E. coli. Depending on the type of microcin produced, different virulence patterns were observed which seemed to be determined by the degree of compatibility between virulence and microcin loci. In conclusion, results pointed to a relationship between higher-molecular-mass microcins and urovirulence.
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http://dx.doi.org/10.1016/j.micpath.2009.09.003 | DOI Listing |
Viruses
November 2024
Department of Surgery, Campus Virchow Klinikum and Campus Charité Mitte, Charité-Universitätsmedizin Berlin, Augustenburger Platz 1, 13353 Berlin, Germany.
Introduction: The development of chronic kidney disease (CKD) is a common and significant complication, contributing to morbidity after liver transplantation (LT). Cytomegalovirus (CMV) infection is common in the overall population, and relevant reinfection after LT may occur. CMV-associated kidney damage has been discussed, but the clinical significance on CKD development after LT remains unclear.
View Article and Find Full Text PDFVaccines (Basel)
December 2024
Urology Department, Hospital de Santa Maria, 1649-028 Lisbon, Portugal.
Background/objectives: Urinary tract infections (UTI) represent a highly frequent and debilitating disease. Immunoactive prophylaxis, such as the polyvalent bacterial whole-cell-based sublingual vaccine MV140, have been developed to avoid antibiotic use. However, the effectiveness of this tool in the Portuguese population is still unknown.
View Article and Find Full Text PDFMicroorganisms
December 2024
Grupo de Investigación Celular y Molecular de Microorganismos Patógenos, Department of Biological Scieces, Universidad de los Andes, Bogotá 111711, Colombia.
is a human pathogen responsible for a wide range of diseases, such as skin and soft tissue infections, pneumonia, toxic shock syndrome, and urinary tract infections. Methicillin-resistant (MRSA) is a well-known pathogen with consistently high mortality rates. Detecting the resistance gene and phenotypical profile to β-lactams allows for the differentiation of MRSA from methicillin-susceptible (MSSA) isolates.
View Article and Find Full Text PDFPathogens
December 2024
Department of Urology, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA.
: Urinary tract infections (UTIs) are among the most prevalent bacterial infections. With many patients turning to the Internet as a health resource, this study seeks to understand public engagement with online resources concerning recurrent UTIs (rUTIs), assess their reliability, and identify common questions/concerns about rUTIs. : Social media analysis tool BuzzSumo was used to calculate online engagement (likes, shares, comments, views) with information on rUTIs.
View Article and Find Full Text PDFPathogens
December 2024
Department of Genetics and Hereditary Diseases, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 400372 Cluj-Napoca, Romania.
cuniculi infection in rabbits represents a true challenge in both diagnosis and treatment of the disease. This study aims to describe and analyze all methods of identifying the presence of the microsporidian in a rabbit through antemortem and postmortem methods. The patient manifested clinical signs of vestibular disease and mild renal symptoms with no significant improvement under treatment, which finally led to euthanasia.
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