Results 71 to 80 of about 1,809,047 (357)

Flexible nitrogen utilisation by the metabolic generalist pathogen Mycobacterium tuberculosis

eLife, 2019
Bacterial metabolism is fundamental to survival and pathogenesis. We explore how Mycobacterium tuberculosis utilises amino acids as nitrogen sources, using a combination of bacterial physiology and stable isotope tracing coupled to mass spectrometry ...
Aleksandra Agapova, Agnese Serafini, Michael Petridis, Debbie M Hunt, Acely Garza-Garcia, Charles D Sohaskey, Luiz Pedro Sório de Carvalho   +6 more
doaj   +1 more source

Preparation and Characterization of New Liposomes. Bactericidal Activity of Cefepime Encapsulated into Cationic Liposomes [PDF]

, 2019
Cefepime is an antibiotic with a broad spectrum of antimicrobial activity. However, this antibiotic has several side effects and a high degradation rate.
Camacho Sánchez, Vanesa, Lebrón Romero, José Antonio, López López, Manuel, López-Cornejo, María del Pilar, Merino Bohórquez, Vicente, Moyá Morán, María Luisa, Ostos Marcos, Francisco José   +6 more
core   +1 more source

Image-based dynamic phenotyping reveals genetic determinants of filamentation-mediated beta-lactam tolerance [PDF]

, 2020
Antibiotic tolerance characterized by slow killing of bacteria in response to a drug can lead to treatment failure and promote the emergence of resistance.
Camacho, Rafael, Fauvart, Maarten, Franke, Sabine, Hofkens, Johan, Marchal, Kathleen, Michielsen, Jan, Weytjens, Bram, Wilmaerts, Dorien, Zahir, Taiyeb   +8 more
core   +2 more sources

Cell surface interactome analysis identifies TSPAN4 as a negative regulator of PD‐L1 in melanoma

Molecular Oncology, EarlyView.
Using cell surface proximity biotinylation, we identified tetraspanin TSPAN4 within the PD‐L1 interactome of melanoma cells. TSPAN4 negatively regulates PD‐L1 expression and lateral mobility by limiting its interaction with CMTM6 and promoting PD‐L1 degradation.
Guus A. Franken, Andrea Abel Gutierrez, Imke van Rossum, Cornelia G. Spruijt, Michiel Vermeulen, Guido van Mierlo, Blanca Scheijen, Annemiek B. van Spriel   +7 more
wiley   +1 more source

Copy number flexibility facilitates heteroresistance to increasing antibiotic pressure and threatens the beta-lactam pipeline

Nature Communications
Our understanding of the rapid adaptation of bacteria to resist novel drugs is growing beyond known mechanisms such as mobile genetic elements and mutation selection.
Jacob E. Choby, Tugba Ozturk, Carter N. Abbott, Christina Nnabuife, Jennifer M. Colquhoun, Sarah W. Satola, Philip N. Rather, Timothy Palzkill, David S. Weiss   +8 more
doaj   +1 more source

Identification of 76 novel B1 metallo-β-lactamases through large-scale screening of genomic and metagenomic data

Microbiome, 2017
Background Metallo-β-lactamases are bacterial enzymes that provide resistance to carbapenems, the most potent class of antibiotics. These enzymes are commonly encoded on mobile genetic elements, which, together with their broad substrate spectrum and ...
Fanny Berglund, Nachiket P. Marathe, Tobias Österlund, Johan Bengtsson-Palme, Stathis Kotsakis, Carl-Fredrik Flach, D G Joakim Larsson, Erik Kristiansson   +7 more
doaj   +1 more source

Development and application of an antibiotic spectrum index for benchmarking antibiotic selection patterns across hospitals [PDF]

, 2017
Standard metrics for antimicrobial use consider volume but not spectrum of antimicrobial prescribing. We developed an antibiotic spectrum index (ASI) to classify commonly used antibiotics based on activity against important pathogens.
Gerber, Jeffrey S, Hersh, Adam L, Kronman, Matthew P, Metjian, Talene A, Newland, Jason G, Ross, Rachael K   +5 more
core   +2 more sources

Marked Reductions in Pediatric Outpatient Antibiotic Prescribing in Portugal During the Pandemic [PDF]

, 2021
José Miguel Cunha de Alarcão, Ana Teresa Gil, Bárbara Oliveiros, Fernanda Rodrigues   +3 more
openalex   +1 more source

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

Molecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala, Sini Ahonen, Sara Peltola, Aura Tuohisto‐Kokko, Olaya Esparta, Peppi Suominen, Anne Jokilammi, Iman Farahani, Deepankar Chakroborty, Nikol Dibus, Steffen Boettcher, Tomi T. Airenne, Mark S. Johnson, Lisa D. Eli, Klaus Elenius, Kari J. Kurppa   +15 more
wiley   +1 more source

The Prevalence of Antibiotic and Toothpaste Sensitivity Found in Oral Streptococcal Isolates in Healthy Individuals in the Okada Community of Nigeria [PDF]

, 2017
Background: This study aimed to determine the prevalence, antibiotic, and toothpaste sensitivity of oral streptococcal isolates in healthy individuals in the Okada community of Nigeria.
Mitsan, O. (Olley), Okwu, M. U. (Maureen)   +1 more
core