Chemical investigation of the mangrove endophytic fungus Cladosporium sp. SCNU-F0001 resulted in the isolation and identification of a new macrolide compound named thiocladospolide E (1) and a novel macrolide lactam named cladospamide A (2), along with the known cladospolide B (3). The structures were elucidated based on spectroscopic methods, and the absolute configurations were determined by X-ray diffraction and HPLC analysis after chemical derivatization. All compounds were tested for their antibacterial and cytotoxic activity.
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http://dx.doi.org/10.1016/j.fitote.2019.104246 | DOI Listing |
Sci Total Environ
December 2024
CSIRO Environment, Ecosciences Precinct, 41 Boggo Road, Dutton Park, QLD 4102, Australia.
This study investigated the potential role of phages in the dissemination of antimicrobial resistance genes (ARGs) and virulence factor genes (VFGs) in Escherichia coli (E. coli). A comprehensive in silico analysis of 18,410 phage sequences retrieved from the National Center for Biotechnology Information database (NCBI) revealed distinct carriage patterns for ARGs and VFGs between lytic, temperate, and chronic phage types.
View Article and Find Full Text PDFJ Infect Dis
December 2024
The National Institute for Health Research Oxford Biomedical Research Centre, University of Oxford, Oxford, UK.
Background: Current guidelines recommend combining a macrolide with a β-lactam antibiotic for the empirical treatment of moderate-to-high severity community-acquired pneumonia (CAP); however macrolide use is associated with potential adverse events and antimicrobial resistance.
Methods: We analysed electronic health data from 8,872 adults in Oxfordshire, UK, hospitalised with CAP between 01-January-2016 and 19-March-2024, who received either amoxicillin or co-amoxiclav as initial treatment. We examined the effects of adjunctive macrolides on 30-day all-cause mortality, time to hospital discharge, and changes in Sequential Organ Failure Assessment (SOFA) score, using inverse probability treatment weighting to address confounding by baseline severity.
J Environ Manage
December 2024
Tianjin Key Laboratory of Clean Energy and Pollution Control, School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin, 300401, China. Electronic address:
The effective control of antibiotic resistance in aquatic environments is urgent. The combined chlorine and UV processes (Cl-UV, UV/Cl, and UV-Cl) are considered potential control processes for controlling antibiotic resistance. This study compared the effectiveness of these three processes in real water bodies and the potential health risks associated with antibiotic resistance genes (ARGs) after treatments.
View Article and Find Full Text PDFBMC Vet Res
December 2024
Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, 10900, Thailand.
Background: Antimicrobial resistance (AMR) is a global health concern that is exacerbated by the transmission of bacteria and genetic material between humans, animals and the environment. This study investigated AMR of Escherichia coli (E. coli) isolated from cats' feces and their drinking water.
View Article and Find Full Text PDFBMC Microbiol
December 2024
College of Agriculture and Forestry, Linyi University, Linyi, Shandong, 276005, China.
Multidrug-resistant (MDR) Acinetobacter baumannii (A. baumannii) is currently recognized not only as a significant nosocomial pathogen but also is an emerging bacterial infection in food-producing animals, posing a critical threat to global health. However, this is a hindrance to detailed bioinformatic studies of MDR A.
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