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Comparison between electrochemiluminescence of luminol and electrocatalysis by Prussian blue for the detection of hydrogen peroxide.
Anal Methods
January 2025
Department of Chemistry, Faculty of Mathematics and Sciences, Universitas Indonesia, Jakarta, Indonesia.
Electrochemiluminescence (ECL) of luminol and electrocatalysis by Prussian blue were compared for the selective detection of HO at the boron-doped diamond (BDD) electrodes. The HO detection was optimized by various parameters such as the applied potential at pH 7.4, which is a physiological value usually used for HO detection in enzymatic reactions.
View Article and Find Full Text PDFLate Endovascular Treatment for Ischemic Stroke with Moderate to Large Infarct Volume is Associated with a Better Clinical Prognosis.
Curr Neurovasc Res
January 2025
Center for Rehabilitation Medicine, Department of Neurology, Zhejiang Provincial People's Hospital (Affiliated People's Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China.
Objective: The concept of "time is brain" is crucial for the reperfusion therapy of ischemic stroke. However, the Infarct Growth Rate (IGR) varies among individuals, which is regarded as a more powerful factor than the time when determining infarct volume and its association with clinical outcomes. For stroke patients with a similar infarct volume, a longer time from stroke Onset to Imaging (OTI) correlates with a lower IGR, which may indicate a better prognosis.
View Article and Find Full Text PDFLaser surface nanoalloying of Fe, Si, and C on aluminum substrates with excellent optical and electronic properties.
Nanoscale Adv
January 2025
Energy Masteries Laboratory, Physics Department, School of Sciences and Engineering, The American University in Cairo New Cairo 11835 Egypt
Laser surface alloying of Fe, Si, and C on aluminium is demonstrated using a Q-switched Nd:YAG laser as the source of energy. The fundamental wavelength of the laser beam was 1064 nm with an output energy of 100 mJ and a pulse duration of 10 ns. The exposure was conducted in repetitive mode with a frequency rate of 1 Hz.
View Article and Find Full Text PDFGut dysbiosis is associated with difficult-to-treat rheumatoid arthritis.
Front Med (Lausanne)
January 2025
The Biomedical Research Institute of Malaga and Platform in Nanomedicine (IBIMA BIONAND Platform), Málaga, Spain.
Background: Difficult-to-treat rheumatoid arthritis (D2T RA) refers to a subset of patients who fail to achieve adequate disease control after the use of two or more biological or targeted synthetic disease-modifying antirheumatic drugs (b/tsDMARDs) with different mechanisms of action, while maintaining active inflammatory disease. This presents a therapeutic challenge and highlights the need to explore contributing factors such as the potential role of the gut microbiota. Therefore, the aim of this study was to analyze the gut microbiota and inflammation in patients with D2T RA in comparison to patients with easy-to-treat RA (E2T RA).
View Article and Find Full Text PDFOn the breakdown of Förster energy transfer theory due to solvent effects: atomistic simulations unveil distance-dependent dielectric screening in calmodulin.
Chem Sci
January 2025
Departament de Farmàcia i Tecnologia Farmacèutica, i Fisicoquímica, Facultat de Farmàcia i Ciències de l'Alimentació, Universitat de Barcelona (UB) Barcelona Spain
Förster resonance energy transfer (FRET) is a powerful technique used to investigate the conformational preferences of biosystems, and molecular simulations have emerged as an ideal complement to FRET due to their ability to provide structural models that can be compared with experiments. This synergy is however hampered by the approximations underlying Förster theory regarding the electronic coupling between the participating dyes: a dipole-dipole term attenuated by a simple dielectric screening factor 1/ that depends on the refractive index of the medium. Whereas the limits of the dipole approximation are well-known, detailed insights on how environment effects deviate from the 1/ assumption and modify the distance dependence that characterizes FRET as a spectroscopic ruler are still not well understood, especially in biosystems characterized by significant structural disorder.
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