Comparative Proteomics of Methicillin-Resistant Staphylococcus aureus Subjected to Synergistic Effects of the Lantibiotic Nisin and Oxacillin

Microbial Drug Resistance, Ahead of Print.
Source: Microbial Drug Resistance - Category: Microbiology Authors: Source Type: research

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ConclusionThe national screening tools were of limited use as the majority of MRSA and CPE carriers passed unidentified through the EDs, and many patients were isolated unnecessarily.
Source: Journal of Hospital Infection - Category: Infectious Diseases Source Type: research
Publication date: Available online 15 October 2019Source: American Journal of Infection ControlAuthor(s): Hiroki Kitagawa, Minako Mori, Seiya Kashiyama, Yayoi Sasabe, Kiyoko Ukon, Naomi Shimokawa, Nobuaki Shime, Hiroki OhgeBackgroundThe hospital environment is an important source of multidrug-resistant organisms such as methicillin-resistant Staphylococcus aureus (MRSA). Here, we evaluated the efficacy of pulsed xenon ultraviolet (PX-UV) disinfection in addition to manual cleaning in a Japanese hospital.MethodsEnvironmental samples were collected from inpatient rooms that had been occupied for at least 48 hours by patients...
Source: American Journal of Infection Control - Category: Infectious Diseases Source Type: research
With great interest we read the article by Butler-Laporte G et al.,1 and here we reported the emergence and spread of pvl-positive genotypic CA-MRSA ST59 with increased adhesion capacity from wounds in hospitals. Methicillin-resistant Staphylococcus aureus (MRSA) has been a major pathogen causing skin and soft tissue infections (SSTIs) and invasive infections in both healthcare and community settings.1,2. Epidemiological classification and genotypic definition contribute to the understanding of healthcare-associated MRSA (HA-MRSA) and community-associated MRSA (CA-MRSA).
Source: Journal of Infection - Category: Infectious Diseases Authors: Tags: Letter to the Editor Source Type: research
In conclusion, to best of our knowledge these findings are the first report of isolation of 4-bromophenol and Bis (2-ethylhexyl) phthalate from genus Nocardiopsis, thus suggesting that rare actinomycetes are promising source of therapeutically important bioactive metabolites.
Source: Microbial Pathogenesis - Category: Infectious Diseases Source Type: research
New options are urgently needed for the treatment of methicillin-resistant Staphylococcus aureus (MRSA) infections. Balsacone C is a new dihydrochalcone extracted from Populus balsamifera that has been reported previously as being active against Staphylococcus aureus. Here, we evaluate the antibacterial activity of balsacone C against MRSA. Thirty-four (34) MRSA isolates were obtained from hospitalized patients; these isolates were then characterized for their resistance. Most of these MRSA (>85%) were resistant to penicillin, amoxicillin/clavulanic acid, ciprofloxacin, moxifloxacin, levofloxacin, clindamycin, erythromy...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
In this study we demonstrate that the supernatant from novel environmental isolates of Delftia spp. have antimicrobial activity. We characterized the active fraction and identified delftibactin A as a compound with antimicrobial activity. Delftibactin A exhibits potent antimicrobial activity against Gram positive multi drug resistant (MDR) bacteria like Methicillin-resistant Staphylococcus aureus (MRSA), and Vancomycin resistant Enterococcus (VRE), and also against the Gram negative pathogens Acinetobacter baumannii and Klebsiella pneumoniae. We discovered that the production of delftibactin A is greatly influenced by temp...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Health care –associated infections (HCAIs) are a significant concern for both health care workers (HCWs) and patients. They are a major contributing factor of disease in industrialized countries, and are responsible for significant morbidity, mortality, and a direct annual financial loss of $6-7 billion in No rth America alone. They are an increasingly challenging health issue due to multidrug-resistant pathogens such as methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococci among others, along with an increasing number of susceptible patients.
Source: Journal of Medical Imaging and Radiation Sciences - Category: Radiology Authors: Tags: Continuing Medical Education Source Type: research
Abstract The in vitro activities of five quinazolinone antibacterials, compounds Q1-Q5, were tested against 210 strains of methicillin-resistant Staphylococcus aureus (MRSA). The MIC50/MIC90 values (both in μg/ml) were as follows: Q1 (0.5/2), Q2 (1/4), Q3 (2/4), Q4 (0.06/0.25) and Q5 (0.125/0.5). Several strains with high MIC values for some of these compounds (from 8 to>32 μg/ml) exhibited amino-acid changes in the penicillin-binding proteins, which are targeted by these antibacterials. PMID: 31611358 [PubMed - as supplied by publisher]
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research
Publication date: Available online 13 October 2019Source: MycoscienceAuthor(s): Katesaraporn Nuankeaw, Boonyanoot Chaiyosang, Thanapat Suebrasri, Somdej Kanokmedhakul, Saisaamorn Lumyong, Sophon BoonlueAbstractBioactive compounds of endophytic fungus Trichoderma polyalthiae were extracted from culture broth media. The crude extracts showed strong antimicrobial activity against human pathogens. Biologically active compounds were isolated and purified by chromatographic methods. The structures of the pure compounds were elucidated by spectroscopic methods. They were identified as Violaceol I and Violaceol II. These compounds...
Source: Mycoscience - Category: Biology Source Type: research
Publication date: Available online 12 October 2019Source: Journal of Advanced ResearchAuthor(s): Yanguang Cong, Sijin Yang, Xiancai RaoAbstractThe infection caused by methicillin-resistant Staphylococcus aureus (MRSA) is a global threat to public health. Vancomycin remains one of the first-line drugs for the treatment of MRSA infections. However, S. aureus isolates with complete resistance to vancomycin have emerged in recent years. Vancomycin-resistant S. aureus (VRSA) is mediated by a vanA gene cluster, which is transferred from vancomycin-resistant enterococcus. Since the first VRSA isolate was recovered from Michigan, ...
Source: Journal of Advanced Research - Category: Research Source Type: research
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