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A novel overtone peak self-referencing fluorescent sensor based on a bipyridine-linked covalent organic framework for highly sensitive copper ion detection.
Anal Methods
January 2025
Jiangxi University of Chinese Medicine, Nan Chang, Jiangxi 330004, China.
This study reports a novel ratiometric fluorescence sensor based on a tetraphenylethylene-bipyridine covalent organic framework (TPE-Bpy-COF) for the sensitive detection of Cu, leveraging the unique coordination properties of the bipyridine moieties. The interaction between Cu and the nitrogen atoms in the bipyridine units induces fluorescence quenching at 500 nm through an efficient host-guest electron transfer mechanism, where excited-state electrons from the COF framework are transferred to the vacant orbitals of Cu. Upon excitation at 410 nm, the sensor exhibits a primary emission peak at 500 nm, which is quenched in the presence of Cu, while an overtone peak at 820 nm remains stable, serving as an internal reference for ratiometric measurements and significantly enhancing the accuracy and reliability of the sensor.
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Int Forum Allergy Rhinol
January 2025
Department of Otorhinolaryngology, Mayo Clinic in Arizona, Scottsdale, Arizona, USA.
Background/aim: Eosinophilic granulomatosis with polyangiitis (EGPA) is a multisystemic disease associated with nasal polyposis. Multiple biologics are used for managing EGPA, including some approved for nasal polyps (NP). This study investigated real-world biologic prescription patterns for EGPA and their impact on NP and endoscopic sinus surgery (ESS) use.
View Article and Find Full Text PDFCigarette smoking and perceived risk of cardiovascular disease in Iran.
BMC Public Health
January 2025
Environmental Health Research Center, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran.
Introduction: Studies have consistently demonstrated a strong link between cigarette smoking and an increased risk of cardiovascular diseases (CVD). On the other hand, studies have shown that most smokers do not have a real understanding of the cardiovascular health hazards of smoking. Therefore, the study aimed to determine the perceived risk of Myocardial Infarction (MI), Hypertension (HTN), and Stroke among current smokers in Iran.
View Article and Find Full Text PDFEnhanced assessment of water quality for both nitrate and nitrite using engineered E. coli with para-aminobenzoic acid biosynthesis.
Anal Chim Acta
February 2025
Department of Chemistry, National Taiwan Normal University, Taipei, 11677, Taiwan. Electronic address:
Background: Monitoring nitrate and nitrite levels in water is vital for protecting human health, aquatic ecosystems, and regulatory compliance. However, traditional detection methods often involve environmentally harmful chemicals. This study introduces a sustainable alternative by leveraging metabolically engineered E.
View Article and Find Full Text PDFCircular RNA ATP9A Stimulates Non-small Cell Lung Cancer Progression via MicroRNA-582-3p/Ribosomal Protein Large P0 Axis and Activating Phosphatidylinositol 3-Kinase/Protein Kinase B Signaling Pathway.
Appl Biochem Biotechnol
January 2025
Department of Oncology, The First Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, No.71 Baoshan North Road, Yunyan District, Guiyang City, 550001, Guizhou Province, China.
Circular RNAs (circRNAs), along with their pathogenic property in non-small cell lung cancer (NSCLC), require comprehensive analyses and explanations. The study is established with the purpose to elucidate the potential molecular mechanism of circATP9A in NSCLC. CircATP9A and microRNA (miR)-582-3p were evaluated by real-time quantitative polymerase chain reaction, and ribosomal protein large P0 (RPLP0), cleaved caspase-3, cleaved Ki-67, epithelial-to-mesenchymal transition (EMT)-associated proteins (N-cadherin and E-cadherin), and core proteins of the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) pathway were by Western blot.
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