Results 231 to 240 of about 531,624 (298)

First line defence antioxidants-superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPX): Their fundamental role in the entire antioxidant defence grid

Alexandria Journal of Medicine, 2018
O. Ighodaro, O. Ighodaro, O. Akinloye
exaly   +2 more sources

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Catalase-Like Nanozymes: Classification, Catalytic Mechanisms, and Their Applications.

Small, 2022
The field of nanozymes has developed rapidly over the past decade. Among various oxidoreductases mimics, catalase (CAT)-like nanozyme, acting as an essential part of the regulation of reactive oxygen species (ROS), has attracted extensive research ...
Deting Xu, Liyuan Wu, Haodong Yao, Lina Zhao   +3 more
semanticscholar   +1 more source

Atomic-Level Regulation of Cobalt Single-Atom Nanozymes: Engineering High-Efficiency Catalase Mimics.

Angewandte Chemie, 2023
Nanozymes aim to mimic the highly evolved active centers of natural enzymes. Despite progress in nanozyme engineering, their catalytic performance is much less favorable compared with natural enzymes. This study shows that precise control over the atomic
Yuanjun Chen, Bing Jiang, Haigang Hao, Haijing Li, Chenyue Qiu, Xiao Liang, Qingyun Qu, Zedong Zhang, Rui Gao, Demin Duan, Shufang Ji, Dingsheng Wang, Minmin Liang   +12 more
semanticscholar   +1 more source

Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue

Nature Protocols, 2010
Joseph J Cullen
exaly   +2 more sources

Edge‐Site Engineering of Defective Fe–N4 Nanozymes with Boosted Catalase‐Like Performance for Retinal Vasculopathies

Advances in Materials, 2022
Extensive efforts are devoted to refining metal sites for optimizing the catalytic performance of single‐atom nanozymes (SANzymes), while the contribution of the defect environment of neighboring metal sites lacks attention. Herein, an iron‐based SANzyme
Ruofei Zhang, B. Xue, Yanhong Tao, Hanqing Zhao, Zixia Zhang, Xiaonan Wang, Xinyao Zhou, B. Jiang, Zhenglin Yang, Xiyun Yan, Kelong Fan   +10 more
semanticscholar   +1 more source

A Dopamine-Enabled Universal Assay for Catalase and Catalase-Like Nanozymes.

Analytical Chemistry, 2022
Developing a universal strategy to measure catalase (CAT)/CAT-like activity, on one hand, overcomes limitations on current assays, such as moderate sensitivity and limited sample scope; on the other hand, facilitates insightful studies on applications of
Anqi Lin, Quanyi Liu, Yihong Zhang, Quan Wang, Sirong Li, Bijun Zhu, L. Miao, Yan Du, Sheng Zhao, Hui Wei   +9 more
semanticscholar   +1 more source

E. coli Membrane Vesicles as a Catalase Carrier for Long-Term Tumor Hypoxia Relief to Enhance Radiotherapy.

ACS Nano, 2021
Hypoxia is one of the most important factors that limit the effect of radiotherapy, and the abundant H2O2 in tumor tissues will also aggravate hypoxia-induced radiotherapy resistance.
Wenjing Zai, Lin Kang, Tiejun Dong, Haoran Wang, Lining Yin, Shaoju Gan, Wenjia Lai, Yibing Ding, Yiqiao Hu, Jinhui Wu   +9 more
semanticscholar   +1 more source

Ascorbate Peroxidase and Catalase Activities and Their Genetic Regulation in Plants Subjected to Drought and Salinity Stresses

International Journal of Molecular Sciences, 2015
Hydrogen peroxide (H2O2), an important relatively stable non-radical reactive oxygen species (ROS) is produced by normal aerobic metabolism in plants. At low concentrations, H2O2 acts as a signal molecule involved in the regulation of specific biological/
Adriano Sofo, Antonio Scopa, Maria Nuzzaci   +2 more
exaly   +2 more sources

Nanoceria exhibit redox state-dependent catalase mimetic activity

Chemical Communications, 2010
In this study we have found that cerium oxide nanoparticles exhibit catalase mimetic activity. Surprisingly, the catalase mimetic activity correlates with a reduced level of cerium in the +3 state, in contrast to the relationship between surface charge ...
Sanjay Singh, Ajay S Karakoti, Sudipta Seal   +2 more
exaly   +2 more sources

ENCAPSULATION OF CATALASE AND PEG-CATALASE IN ERYTHROCYTE

Artificial Cells, Blood Substitutes, and Biotechnology, 2001
Reactive partially reduced oxygen species such as superoxide anion (O2-), hydrogen peroxide (H2O2) and hydroxyl radical (OH) are produced in aerobically growing organisms during normal cellular respiration. To provide an effective defense against these reactive species, many aerobic organisms have evolved a multienzyme defense which includes superoxide
Uslan, AH, Baysal, SH
openaire   +3 more sources