Results 91 to 100 of about 740,410 (298)

Interspecies Biofilm Dynamics Among Staphylococci: Inflammatory Contributions to Chronic Rhinosinusitis

International Forum of Allergy &Rhinology, EarlyView.
ABSTRACT Introduction Staphylococcus species are frequently isolated from the sinonasal niche of chronic rhinosinusitis (CRS) patients. While Staphylococcus aureus is often associated with recalcitrant CRS, Staphylococcus epidermidis and Staphylococcus lugdunensis are largely deemed commensal.
Sintayehu Ambachew, Mahnaz Ramezanpour, Clare M. Cooksley, Sholeh Feizi, Muhammed Awad, Kevin Aaron Fenix, Peter‐John Wormald, Alkis J. Psaltis, Sarah Vreugde   +8 more
wiley   +1 more source

Oral β-lactam combinations are effective in vitro against Mycobacterium avium, regardless of clarithromycin susceptibility

Microbiology Spectrum
The global incidence and prevalence of pulmonary disease caused by the Mycobacterium avium complex (MAC), mainly comprising M. avium and Mycobacterium intracellulare, is increasing.
Maiko Yoshikawa, Tomoyasu Nishimura, Kana Misawa, Rina Shimamura, Kenta Suzuki, Shoko Kashimura, Yuki Igarashi, Yuki Enoki, Kazuaki Taguchi, Naoki Hasegawa, Ho Namkoong, Kazuaki Matsumoto   +11 more
doaj   +1 more source

Activation of the Extracytoplasmic Function σ Factor σ^P by β-Lactams in Bacillus thuringiensis Requires the Site-2 Protease RasP

mSphere, 2019
Bacteria can utilize alternative σ factors to regulate sets of genes in response to changes in the environment. The largest and most diverse group of alternative σ factors are the extracytoplasmic function (ECF) σ factors.
Theresa D. Ho, Kelsie M. Nauta, Ute Müh, Craig D. Ellermeier   +3 more
doaj   +1 more source

Development of a novel heterologous β-lactam-specific whole-cell biosensor in Bacillus subtilis

Journal of Biological Engineering, 2020
Background Whole-cell biosensors are a powerful and easy-to-use screening tool for the fast and sensitive detection of chemical compounds, such as antibiotics. β-Lactams still represent one of the most important antibiotic groups in therapeutic use. They
Nina Lautenschläger, Philipp F. Popp, Thorsten Mascher   +2 more
doaj   +1 more source

Additional file 2: of Treatment of community-onset pneumonia in neutropenic cancer patients: β-lactam monotherapy versus combination antibiotic regimens

, 2019
Table S2.. Multivariate analysis of 90-day all-cause mortality due to neutropenic pneumonia. (DOCX 15 kb)
Seok, Hyeri, Ko, Jae-Hoon, Peck, Kyong, Kim, Ji-Yeon, Lee, Ji, Park, Ga, Cho, Sun, Kang, Cheol-In, Lee, Nam, Chung, Doo   +9 more
openaire   +1 more source

Combined dual β-lactams and diazabicyclooctane β-lactamase inhibitor is highly effective against Mycobacterium abscessus species in vitro

Journal of Global Antimicrobial Resistance
Objective: Mycobacterium abscessus pulmonary disease is a refractory infectious disease. Developing an effective treatment is urgent as the number of patients infected with M. abscessus species (MABS) is increasing worldwide.
Kana Misawa, Tomoyasu Nishimura, Maiko Yoshikawa, Rina Shimamura, Shoko Kashimura, Yuki Enoki, Kazuaki Taguchi, Kazuaki Matsumoto, Naoki Hasegawa   +8 more
doaj   +1 more source

β-Lactam Antibiotics Enhance the Pathogenicity of Methicillin-Resistant Staphylococcus aureus via SarA-Controlled Lipoprotein-Like Cluster Expression

mBio, 2019
Methicillin-resistant Staphylococcus aureus (MRSA) resists nearly all β-lactam antibiotics that have a bactericidal activity. However, whether the empirically used β-lactams enhance MRSA pathogenicity in vivo remains unclear.
Weilong Shang, Yifan Rao, Ying Zheng, Yi Yang, Qiwen Hu, Zhen Hu, Jizhen Yuan, Huagang Peng, Kun Xiong, Li Tan, Shu Li, Junmin Zhu, Ming Li, Xiaomei Hu, Xuhu Mao, Xiancai Rao   +15 more
doaj   +1 more source

The Effect of Aqueous Extract and Essential Oils of the Leaves of Eucalyptus incrassate on β- Lactam Resistant Staphylococcus aureus

Ibn Al-Haitham Journal for Pure and Applied Sciences, 2017
According to the extraction procedure , Eucalyptus incrassata leave sample yielded 5% and 2% w/w(Based on dry leaves ) of the aqueous extract and essential oils respectively. Disk diffusion method was used to determine the antimicrobial activity of aqueous extract and essential oils of E .
Ehab D. Salman, Abbas J. H. AL-Saedi, Amel Gh. M. AL-Kazzaz, Suhad S. Yahya   +3 more
openaire   +1 more source

Profiles of phenotype resistance to antibiotic other than β-lactams in Klebsiella pneumoniae ESBLs-producers, carrying blaSHV genes.

Folia Histochemica et Cytobiologica, 2011
Extended spectrum β-lactamases production is one of the most common mechanism of resistance to extended spectrum β-lactam antibiotics is increasing worldwide. Twenty five strains of Klebsiella pneumoniae isolated from clinical specimens were tested. Based on the phenotypic confirmatory test all these strains were defined as ESBL producers named ESBL(+).
Małgorzata Krawczyk, Robert Milewski, Tomasz Hauschild, Andrzej Szpak, Piotr Wieczorek, Dominika Ojdana, Paweł Sacha, Katarzyna Kaczyńska, Elżbieta Tryniszewska   +8 more
openaire   +5 more sources

Organocatalytic Enantioselective Michael/Cyclization Domino Reaction between 3‑Amideoxindoles and α,β-Unsaturated Aldehydes: One-Pot Preparation of Chiral Spirocyclic Oxindole-γ-lactams

, 2017
The first organocatalytic enantioselective Michael/cyclization domino reaction between 3-amideoxindoles and α,β-unsaturated aldehydes is described. After sequential oxidation with pyridinium chlorochromate, a direct and one-pot preparation of highly ...
Li-Xin Wang (1444531), Zheng-Bing Zhang (3846637), Feng Chen (25347), Xiao Wang (19312), Lin Peng (455883), Peng Yang (296696), Chao Chen (195669)   +6 more
core   +1 more source