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Evaluation of the antibacterial and inhibitory activity of the NorA and TetK efflux pumps of Staphylococcus aureus by p-coumaric acid.
Microb Pathog
January 2025
Postgraduate Program in Biological Sciences (PPGCB), Federal University of Pernambuco (UFPE), Recife 50670-901, PE, Brazil. Electronic address:
The NorA and TetK efflux pumps mediate resistance to fluoroquinolone and tetracycline antibiotics by actively extruding these compounds and reducing their intracellular concentrations. Consequently, intense research has focused on inhibiting these efflux mechanisms using antimicrobial agents derived from natural or synthetic sources. This study used Fourier transform infrared spectroscopy (ATR-FTIR) to analyze the various functional groups present in p-coumaric acid.
View Article and Find Full Text PDFAn ingenious integrated metal-organic frameworks-based ratiometric sensing platform for efficient, sensitive and real-time detection of tetracyclines.
Food Chem
January 2025
School of Public Health, Zhengzhou University, Zhengzhou 450001, PR China. Electronic address:
Herein, we report a novel ratiometric nanoprobe (CDs@LZIF-8-Eu) that integrates fluorescent carbon dots (CDs) and Eu on LZIF-8 via a one-pot stirring method. Tetracyclines (TCs) can create inner filter effect on CDs while simultaneously generating an antenna effect with Eu. The rapid and efficient adsorption capabilities of LZIF-8 enhance the probability of TCs interacting with the signal tags.
View Article and Find Full Text PDFExploration of biomass-derived carbon dots based on chestnut shell for the sensitive detection of phosphate and tetracycline hydrochloride.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Research Center for Analytical Sciences, Department of Chemistry, College of Sciences, Northeastern University, Shenyang 110819, China.
Phosphate pollution leads to the deterioration of water quality, posing a serious threat to human health. Tetracycline hydrochloride (TC), a class of broad-spectrum bacteriostatic agents, has garnered attention due to its extensive use and potential toxicity. Therefore, developing a highly selective and sensitive fluorescent probe for the detection of phosphates and TC is of significant importance.
View Article and Find Full Text PDFA sensitized dual-response ratiometric fluorescent sensor integrated smartphone platform for accurate discrimination and detection of tetracycline homologues based on N-CDs‒Eu complex.
Mikrochim Acta
January 2025
Key Laboratory of Environmental Remediation and Ecological Health, Ministry of Education, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
A sensitized dual-response ratiometric fluorescent sensor integrated smartphone platform for accurate discrimination and detection of tetracycline (TC) homologues was fabricated based on N-CDs-Eu complex. In the sensing system, N-CDs act as a sensitizer of Eu and significantly enhance the fluorescence of TC-Eu complex approximate 40-fold owing to the synergistic effect of antenna effect (AE) and fluorescence resonance energy transfer (FRET). A paper sensor integrated with a smartphone platform is further fabricated for on-site measurement of TC.
View Article and Find Full Text PDFG-Quadruplex DNAzyme-Based Biocatalysis Combined with an Intelligent Electromagnetic-Actuated Microfluidic Chip for Tetracycline Detection.
J Agric Food Chem
January 2025
College of Ocean Food and Biological Engineering, Jimei University, Xiamen 361021, China.
In this study, we present an intelligent electromagnetic-actuated microfluidic chip integrated with a G-quadruplex DNAzyme-based biocatalysis platform for rapid and sensitive tetracycline (TC) detection. In this sensing system, TC significantly quenches fluorescent magnetic carbon dots (M-CDs) via the internal filtration effect and dynamic quenching (the excitation and emission wavelength at 350 and 440 nm, respectively). Then, the G-quadruplex on the M-CDs-Aptamer is exposed and bound with hemin to form hemin-G-quadruplex DNAzyme, catalyzing the conversion of 3,3',5,5'-tetramethylbenzidine to produce blue color.
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