Quantification of Free Radical Scavenging Properties and SOD-Like Activity of Cerium Dioxide Nanoparticles in Biochemical Models

Sozarukova, Madina M.; Shestakova, M. A.; Теплоногова, М. А.; Izmailov, D. Yu.; Проскурнина, Е. В.; Иванов, В. К.

doi:10.1134/s0036023620040208

Cited by 22 publications

(16 citation statements)

References 43 publications

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“…Using these methods, a number of kits for the determination of SOD-like activity have also been developed. 79 In addition to colorimetric reagents, some other reagents have been used to detect O 2 À , such as lucigenin, which is detected by chemiluminescence, 80 and hydroethidine, an O 2 À fluorescent probe. 81 In addition, electron paramagnetic resonance (EPR) or electron spin resonance (ESR) is also used to detect the amount of O 2 À .…”

Section: Methods For Measuring the Sod-like Activity Of Nanozymesmentioning

confidence: 99%

Superoxide dismutase nanozymes: an emerging star for anti-oxidation

et al. 2021

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Section: Methods For Measuring the Sod-like Activity Of Nanozymesmentioning

confidence: 99%

Superoxide dismutase nanozymes: an emerging star for anti-oxidation

et al. 2021

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“…UV-vis spectra of W-CC aerogel and film (A); coloration kinetics of the aerogel and the W-CC film (B): the integral intensities of absorption bands with peaks at 630 nm (W +4 ) and 770 nm (W +5 ), and total integral intensity (W-CC); bleaching kinetics of aerogel and W-CC film (C), total integral intensity of absorption bands at 630 and 770 nm; the image of W-CC aerogel before and after UV irradiation (D) capacity (AC) is a numerical value proportional to the total amount of free radicals intercepted by a compound of a certain concentration. Antioxidant capacity is calculated as the difference between the areas under the kinetic curves (chemiluminograms) of the control sample and the investigated sample [37]. The antioxidant capacity of the test compound is usually expressed in AC units of one of the standard antioxidants.…”

Section: Antioxidant Propertiesmentioning

confidence: 99%

Photochromic aerogels based on cellulose and chitosan modified with WO3 nanoparticles

Kameneva¹,

Popkov²,

Tronev³

et al. 2022

Nanosystems: Phys. Chem. Math.

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In this work, we report the first synthesis of photochromic aerogels and films based on TEMPOoxidized cellulose and chitosan modified with tungsten trioxide nanoparticles. The blue coloring of aerogels based on WO 3 -modified biopolymers under UV light occurs due to the reduction of W +6 to W +5 . The coloration of films of the same composition occurs due to the reduction of W +6 to W +5 and W +4 . The photochromic properties of aerogels and films are reversible; oxidation by atmospheric oxygen leads to bleaching of materials. At that, films become colorless within a few days while aerogels with a high specific surface area (200 m 2 /g) become colorless within several minutes. The antioxidant properties of the WO 3 sol and the WO 3 /TEMPOoxidized cellulose/chitosan composite were studied by luminol-activated chemiluminescence method. The antioxidant capacity of WO 3 /TEMPO-oxidized cellulose/chitosan gel is 1.5 times higher than that of the commercially available antioxidant mexidol. KEYWORDS Aerogel, hybrid materials, nanocomposite, biopolymers, cellulose, chitosan, tungsten oxide, photochromic material, antioxidant. ACKNOWLEDGEMENTS S. V. Kameneva thanks the Council for Grants of the President of the Russian Federation for supporting the study (SP-4398.2021.4).

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“…Besides mimicking the structure and function of natural enzymes, enzyme mimic nanomaterials are more stable, more controllable, and more natural to prepare at a lower cost. CeO 2 -NPs have become one of the research proprieties because of their multiple enzyme activities, 31,32 such as mimetic activities of superoxide dismutase, 33 catalase, 7 phosphatase, 34,35 peroxidase, 36 oxidase, 37 and others. Although studies have illustrated that the mimic activities of phosphatase and catalase follow different chemical methods and involve different active sites, 38 the more complex mechanisms warrant further study.…”

Section: Figurementioning

confidence: 99%

<p>The Advances of Ceria Nanoparticles for Biomedical Applications in Orthopaedics</p>

Li¹,

Xia²,

S³

et al. 2020

IJN

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The ongoing biomedical nanotechnology has intrigued increasingly intense interests in cerium oxide nanoparticles, ceria nanoparticles or nano-ceria (CeO 2-NPs). Their remarkable vacancy-oxygen defect (VO) facilitates the redox process and catalytic activity. The verification has illustrated that CeO 2-NPs, a nanozyme based on inorganic nanoparticles, can achieve the anti-inflammatory effect, cancer resistance, and angiogenesis. Also, they can well complement other materials in tissue engineering (TE). Pertinent to the properties of CeO 2-NPs and the pragmatic biosynthesis methods, this review will emphasize the recent application of CeO 2-NPs to orthopedic biomedicine, in particular, the bone tissue engineering (BTE). The presentation, assessment, and outlook of the orthopedic potential and shortcomings of CeO 2-NPs in this review expect to provide reference values for the future research and development of therapeutic agents based on CeO 2-NPs.

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Quantification of Free Radical Scavenging Properties and SOD-Like Activity of Cerium Dioxide Nanoparticles in Biochemical Models

Cited by 22 publications

References 43 publications

Superoxide dismutase nanozymes: an emerging star for anti-oxidation

Superoxide dismutase nanozymes: an emerging star for anti-oxidation

Photochromic aerogels based on cellulose and chitosan modified with WO3 nanoparticles

<p>The Advances of Ceria Nanoparticles for Biomedical Applications in Orthopaedics</p>

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