Emergence of multidrug-resistant strains of Shigella is a growing concern across the globe. Third-generation cephalosporins are used for treating infections caused by multidrug-resistant Shigellae. However, resistance to these cephalosporin antibiotics due to extended-spectrum ß-lactamases, has emerged as a new problem. So far extended-spectrum ß-lactamases producing Shigella has not been reported from Pakistan. We report such a case in Shigella flexneri from an 8-year old girl with acute dysentery.
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J Chromatogr B Analyt Technol Biomed Life Sci
December 2024
Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, China. Electronic address:
For separation of deoxyribonucleic acid (DNA), positively charged amino-modified magnetic nanoparticles (MN) can effectively adsorb negatively charged DNA through electrostatic interaction. However, the reported preparation of amino-modified MN is usually tedious and time-consuming. Therefore, a simple synthesis method of amino-modified MN is necessary for DNA extraction.
View Article and Find Full Text PDFLett Appl Microbiol
January 2025
Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz 5166616471, Iran.
Essential oils are natural substances used as therapeutic agents and food preservatives to inhibit harmful microorganisms. This study aimed to assess the synergistic effect of Trachyspermum ammi essential oil and ampicillin on antibiotic-resistant gastrointestinal pathogens, including Escherichia coli, Enterococcus faecalis, Shigella flexneri, and Salmonella serotype Typhimurium. Using gas chromatography-mass spectrometry (GC-MS), the main components of T.
View Article and Find Full Text PDFInfect Immun
December 2024
Division of Clinical Medicine, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India.
infection poses a significant public health challenge in the developing world. However, lack of a widely available mouse model that replicates human shigellosis creates a major bottleneck to better understanding of disease pathogenesis and development of newer drugs and vaccines. BALB/c mice pre-treated with streptomycin and iron (FeCl) plus desferrioxamine intraperitoneally followed by oral infection with virulent resulted in diarrhea, loss of body weight, bacterial colonization and progressive colitis characterized by disruption of epithelial lining, loss of crypt architecture with goblet cell depletion, increased polymorphonuclear infiltration into the mucosa, submucosal swelling (edema), and raised proinflammatory cytokines and chemokines in the large intestine.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
Department of Microbiology and Parasitology, Navarra Medical Research Institute (IdiSNA), University of Navarra, 31008 Pamplona, Spain.
Diarrheal diseases caused by and enterotoxigenic (ETEC) are significant health burdens, especially in resource-limited regions with high child mortality. In response to the lack of licensed vaccines and rising antibiotic resistance for these pathogens, this study developed a recombinant strain with the novel incorporation of the gene for the heat-labile enterotoxin B (LTB) subunit of ETEC directly into 's genome, enhancing stability and consistent production. This approach combines the immunogenic potential of LTB with the antigen delivery properties of outer membrane vesicles (OMVs), aiming to provide cross-protection against both bacterial pathogens in a stable, non-replicating vaccine platform.
View Article and Find Full Text PDFReprod Fertil Dev
December 2024
Department of Microbiology, Panjab University, Chandigarh, India.
Context Sperm immobilization factor (SIF) isolated from Staphylococcus aureus has been implicated earlier in the laboratory in infertility due to its negative impact on sperm function. Moreover, SIF was found to bind not only to human and mouse spermatozoa but also to several bacteria. Among the array of bacteria, we selected Shigella flexneri to investigate if it shares antigenic determinants with spermatozoa.
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