Articles with "superoxide radical" as a keyword



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Zymographic Method for Distinguishing Different Classes of Superoxide Dismutases in Plants.

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Published in 2017 at "Methods in molecular biology"

DOI: 10.1007/978-1-4939-7136-7_13

Abstract: In plants, especially in chloroplasts, superoxide radical is generated when an electron is transferred to dimolecular O2 due to decreased activity of Photosystem I. The superoxide (O2-) radical accumulation is more rampant in plants exposed… read more here.

Keywords: different classes; superoxide dismutases; superoxide radical; distinguishing different ... See more keywords

Insights into heterogeneous catalytic activation of peroxymonosulfate by Pd/g-C3N4: The role of superoxide radical and singlet oxygen

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Published in 2017 at "Catalysis Communications"

DOI: 10.1016/j.catcom.2017.08.016

Abstract: Abstract Pd nanoparticles anchored on graphitic nitride carbon (Pd/g-C 3 N 4 ) hybrid catalytic system was prepared by a simple KBH 4 reduction method. Pd/g-C 3 N 4 was very active in the degradation… read more here.

Keywords: singlet oxygen; superoxide radical; radical singlet; peroxymonosulfate ... See more keywords

Enhanced superoxide radical production for ofloxacin removal via persulfate activation with Cu-Fe oxide

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Published in 2018 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2018.08.055

Abstract: Abstract Cu-Fe composite oxides with different Cu:Fe ratios were synthesized by a hydrothermal method and investigated as a heterogeneous catalyst for persulfate activation. The obtained samples exhibited much higher activity than CuFe2O4 for the degradation… read more here.

Keywords: persulfate activation; superoxide radical; radical production; ofloxacin ... See more keywords

Enhancing the degradation of bisphenol A by dioxygen activation using bimetallic Cu/Fe@zeolite: Critical role of Cu(I) and superoxide radical

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Published in 2020 at "Separation and Purification Technology"

DOI: 10.1016/j.seppur.2020.117550

Abstract: Abstract Copper-iron bimetallic material shows a high reactive activity in dioxygen activation processes (DOAs) but presents a significant challenge for enhancing superoxide radical (•O2−) generation. In this study, a practical strategy was developed to enhance… read more here.

Keywords: zeolite; dioxygen activation; generation; superoxide radical ... See more keywords

Photocatalytic Superoxide Radical Generator that Induces Pyroptosis in Cancer Cells.

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Published in 2022 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.2c03256

Abstract: Pyroptosis, a newly characterized form of immunogenic cell death, is attracting increasing attention as a promising approach to cancer immunotherapy. However, biocompatible strategies to activate pyroptosis remain rare. Here, we show that a photocatalytic superoxide… read more here.

Keywords: pyroptosis cancer; cancer; radical generator; pyroptosis ... See more keywords

Near-Infrared Light-Initiated Molecular Superoxide Radical Generator: Rejuvenating Photodynamic Therapy against Hypoxic Tumors.

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Published in 2018 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.8b08658

Abstract: Hypoxia, a quite universal feature in most solid tumors, has been considered as the "Achilles' heel" of traditional photodynamic therapy (PDT) and substantially impairs the overall therapeutic efficacy. Herein, we develop a near-infrared (NIR) light-triggered… read more here.

Keywords: photodynamic therapy; superoxide radical; near infrared; light ... See more keywords

A fast-responsive two-photon fluorescent probe for in vivo imaging superoxide radical anion with a large stokes shift

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Published in 2018 at "RSC Advances"

DOI: 10.1039/c7ra11695k

Abstract: A novel and simple two-photon fluorescent probe NS-O for the detection of superoxide radical anion (O2˙−) with a large turn-on fluorescence signal is presented. The probe NS-O exhibited favorable properties including fast response, high selectivity,… read more here.

Keywords: photon fluorescent; fluorescent probe; probe; two photon ... See more keywords

Oxo-Carotenoids as Efficient Superoxide Radical Scavengers

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Published in 2022 at "Antioxidants"

DOI: 10.3390/antiox11081525

Abstract: Oxo-carotenoids containing conjugated carbonyl groups in their chains were designed to be more efficient superoxide radical scavengers than natural carotenoids, β-carotene and canthaxanthin. A practical chain-extension method for polyene dials (e.g., crocetin dial) was also… read more here.

Keywords: antioxidant activity; superoxide radical; oxo carotenoids; radical scavengers ... See more keywords

Interrelated Mechanism by Which the Methide Quinone Celastrol, Obtained from the Roots of Tripterygium wilfordii, Inhibits Main Protease 3CLpro of COVID-19 and Acts as Superoxide Radical Scavenger

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Published in 2020 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms21239266

Abstract: We describe the potential anti coronavirus disease 2019 (COVID-19) action of the methide quinone inhibitor, celastrol. The related methide quinone dexamethasone is, so far, among COVID-19 medications perhaps the most effective drug for patients with… read more here.

Keywords: mechanism; superoxide radical; methide quinone; celastrol ... See more keywords

Antioxidant Scavenging of the Superoxide Radical by Yerba Mate (Ilex paraguariensis) and Black Tea (Camellia sinensis) Plus Caffeic and Chlorogenic Acids, as Shown via DFT and Hydrodynamic Voltammetry

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Published in 2024 at "International Journal of Molecular Sciences"

DOI: 10.3390/ijms25179342

Abstract: We describe the antioxidant capability of scavenging the superoxide radical of several tea and yerba mate samples using rotating ring–disk electrochemistry (RRDE). We directly measured superoxide concentrations and detected their decrease upon the addition of… read more here.

Keywords: superoxide radical; yerba mate; chlorogenic acid; caffeic acid ... See more keywords