Since utilization of menaquinone in the electron transport system is a characteristic of Gram-positive organisms, the 1,4-dihydroxy-2-naphthoate prenyltransferase (MenA) inhibitors 1a and 2a act as selective antibacterial agents against organisms such as methicillin-resistant Stapylococcus aureus (MRSA), Staphylococcus epidermidis (MRSE), and Mycobacterium spp. Growth of drug-resistant Gram-positive organisms was sensitive to the MenA inhibitors, indicating that menaquinone synthesis is a valid new drug target in Gram-positive organisms.
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http://dx.doi.org/10.1021/jm070638m | DOI Listing |
Pak J Med Sci
January 2025
Inzimam Ul Haq Postgraduate trainee, Department of ENT, MTI Khyber Teaching Hospital, University Road Peshawar, Pakistan.
Background & Objective: Chronic suppurative otitis media is a fatal condition owing to its propensity for intracranial extension. The inadvertent use of antibiotics has led to resistance among causative organisms. The objectives of this study were to determine causative bacteria, their antibiotic resistance and susceptibility patterns, and their response to antibiotics after a one-month follow-up.
View Article and Find Full Text PDFJ Community Hosp Intern Med Perspect
January 2025
Department of Medicine, West Virginia University, House Staff 4Floor HSC-N Morgantown, PO Box 9168, Morgantown, WV, USA.
Implantable cardiac devices, including cardiac pacemakers, are not without risk for infection, carrying a mortality and morbidity of around 5-15%. Gram positive organisms are most common in 91% of cases, whereas gram negative organisms are less common, found in 2% of cases secondary to gram negative organisms other than . Here, we present a rare case of the gram-negative organism leading to a pacemaker site infection.
View Article and Find Full Text PDFAnaesth Intensive Care
January 2025
Department of Intensive Care Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan.
Polymyxin B haemoperfusion is commonly used to adsorb endotoxins in septic shock caused by Gram-negative bacterial infections. Polymyxin B haemoperfusion has been reported to improve hypotension in Gram-positive bacterial infections; however, its efficacy and mechanism in treating such cases are unclear. We hypothesised that polymyxin B haemoperfusion would be equally effective in improving haemodynamics during Gram-positive bacterial infections as in Gram-negative bacterial infections.
View Article and Find Full Text PDFJPEN J Parenter Enteral Nutr
January 2025
3rd Department of Internal Medicine-Metabolic Care and Gerontology, University Hospital and Medical Faculty in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic.
Background: Antimicrobial lock therapy is recommended for preventing and treating catheter-related bloodstream infections, but different solutions have uncertain efficacy.
Methods: Two locks, 1.35% taurolidine and 4% ethylenediaminetetraacetic acid (EDTA), were tested on Staphylococcus epidermidis, Staphylococcus aureus, methicillin-resistant S.
Pathogens
January 2025
Elanco Animal Health, Greenfield, IN 46140, USA.
This study evaluated the minimum inhibitory concentration (MIC) of pradofloxacin against various swine respiratory pathogens, including , , , , and (), associated with disease in swine. This research was conducted in two phases: the initial phase examined isolates from the lungs that could be either commensal or pathogenic, while the second phase focused on systemic strains that spread from the respiratory tract to the brain. The pradofloxacin MIC values of the second phase were within the MIC range of the initial phase, with MIC and MIC values highlighting its potential as an effective antimicrobial agent.
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