Results 71 to 80 of about 86,852 (337)

Balanced Expression of the Diiron Oxygenase BioE Is Essential for Biotin Homeostasis in Elizabethkingia meningoseptica

open access: yesAdvanced Science, EarlyView.
BioE is a new diiron oxygenase that catalyzes the conversion of long‐chain acyl groups into pimeloyl thioester, initiating biotin synthesis. The overexpression of EmBioE disrupts lipid metabolic homeostasis, requiring repressor BioL to maintain a balance between long‐chain fatty acids and biotin synthesis.
Meng Zhang   +9 more
wiley   +1 more source

Laccase from Melanocarpus albomyces: Molecular Docking Analysis with First-Generation Tetracyclines Through a Mechanistic Approach

open access: yesCompounds
Laccases are versatile enzymes capable of oxidizing a wide variety of antibiotics. In this study, the mechanism of catalytic oxidation of first-generation tetracyclines, namely, oxytetracycline, tetracycline, and chlortetracycline, by the Melanocarpus ...
José Muñoz-Espinoza   +5 more
doaj   +1 more source

Whole-Genome Sequencing and Concordance Between Antimicrobial Susceptibility Genotypes and Phenotypes of Bacterial Isolates Associated with Bovine Respiratory Disease. [PDF]

open access: yes, 2017
Extended laboratory culture and antimicrobial susceptibility testing timelines hinder rapid species identification and susceptibility profiling of bacterial pathogens associated with bovine respiratory disease, the most prevalent cause of cattle ...
Abdo, Zaid   +13 more
core   +2 more sources

KRAS Withdrawal in Cholangiocarcinoma Leads to Immune Infiltration and Tumor Regression

open access: yesAdvanced Science, EarlyView.
Cholangiocarcinoma (CCA) driven by oncogenic KRAS depends on its continuous activation for tumor maintenance. Using a conditional KRAS model, the authors show that turning off KRAS triggers rapid tumor regression accompanied by immune cell infiltration and cytokine release. The findings uncover a KRAS–senescence–immune signaling axis and highlight KRAS
Youwei Qiao   +9 more
wiley   +1 more source

Induced Proprioceptor and Low‐Threshold Mechanoreceptor Neurons Derived from Human Pluripotent Stem Cells Exhibit Distinct Functional Mechanosensory Properties

open access: yesAdvanced Science, EarlyView.
This study describes derivation of two distinct mechanosensory subpopulations from human pluripotent stem cells using a transcription factor mediated approach. Of significance, functional interrogation of induced mechanosensory subtypes reveal their unique responses to mechanical stimulation in the absence of end‐organs.
Amy J. Hulme   +12 more
wiley   +1 more source

Health Risk Assessment of Tetracyclines Contamination in Soil-Cabbage (Brassica campestris L. ssp. chinensis) System

open access: yesAgronomy
Tetracyclines (TCs) pollution in vegetable fields is a widely recognized concern, yet the health and ecological risks of TCs residues in the soil–cabbage food chain remain unclear.
Di Liu   +5 more
doaj   +1 more source

Regulating the antibiotic drug release from ß-tricalcium phosphate ceramics by atmospheric plasma surface engineering [PDF]

open access: yes, 2016
Calcium phosphate (CaP) ceramics are of interest in bone substitution due to their good biocompatibility and bioresorbability. Currently certain CaPs in the market are loaded with antibiotics in order to prevent infections but further control is needed ...
Canal Barnils, Cristina   +3 more
core   +2 more sources

Extracellular Vesicles of Streptococcus anginosus Mediate Gastritis via Epithelial Barrier Disruption and Macrophage‐driven Inflammation

open access: yesAdvanced Science, EarlyView.
Streptococcus anginosus extracellular vesicles (SA‐EVs) accumulate in gastric tissue, disrupt epithelial tight junctions, and induce gastritis characterized by neutrophil infiltration and elevated cytokines (TNF‐α, IL‐6, IL‐17A). Proteomics identifies TMPC and FBP62 as key SA‐EVs virulence factors; their genetic deletion attenuates inflammation ...
Ying Gong   +12 more
wiley   +1 more source

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