Results 81 to 90 of about 533,516 (306)

Paradoxical roles of antioxidant enzymes:Basic mechanisms and health implications [PDF]

, 2015
Reactive oxygen species (ROS) and reactive nitrogen species (RNS) are generated from aerobic metabolism, as a result of accidental electron leakage as well as regulated enzymatic processes.
Amit R. Reddi, Arne Holmgren, Chan PH, Chen EP, Chu FF, Daiber A, Elias S. J. Arnér, Geismann C, Hogan B, Jaarsma D, Jian-Hong Zhu, Jin R, Leitzmann C, Li JJ, Li JJ, Lu YP, Makino N, Miranda-Vizuete A, Mirochnitchenko O, Motoori S, Mulder DW, Ogata M, Oury TD, Papaioannou V, Radi R, Sandbach JM, Takahara S, Thimmulappa RK, Tome ME, Vogel U, Wang F, Wen JK, Wen-Hsing Cheng, Wispe JR, Woychik RP, Xin Gen Lei, Ye-Shih Ho, Yongping Bao, Yoshida T   +38 more
core   +1 more source

Cell Membrane Vesicle Camouflaged Artificial Cells

Advanced Functional Materials, EarlyView.
Artificial cells camouflaged with a cell membrane vesicle coating are able to assemble into synthetic aggregates that exhibit rudimentary communication capabilities. Additionally, when these artificial cells are equipped with antioxidant capabilities, they are able to protect the intracellular homeostasis in HepG2 cells present in semi‐synthetic ...
Paula De Dios Andres, Stefan Pendlmayr, Noga Gal, Cathrine Abild Meyer, Cecilie Ryberg, Olav Vestrheim, Noel Angelo Kalacas, Fatih Demir, Markus M. Rinschen, Karsten Haupt, Rajeshwar Prosad Mookerjee, Brigitte Städler   +11 more
wiley   +1 more source

LDL oxidation by activated monocytes: characterization of the oxidized LDL and requirement for transition metal ions

Journal of Lipid Research, 1998
Monocytes can be activated by incubation with opsonized zymosan (Zop), and under these conditions can oxidize low density lipoprotein (LDL). We have characterized the biochemical changes in the lipoprotein after this oxidation.
Xiaoyan Xing, Joanne Baffic, Carl P. Sparrow   +2 more
doaj  

Purine nucleoside phosphorylase: A new marker for free oxygen radical injury to the endothelial cell [PDF]

, 1990
The effect of ischemia and reperfusion on purine nucleoside phosphorylase was studied in an isolated perfused rat liver model. This enzyme is localized primarily in the cytoplasm of the endothelial and Kupffer cells; some activity is associated with the ...
Abouna, Adkison, Eiseman, Granger, Green, Hanks, Hoffee, James T. Snyder, Kamada, Kamiike, Kamiike, Kizaki, Lanir, Lee, Lee, LeMasters, LeMasters, Leonard Makowka, Marotto, Marubayashi, Marubayashi, McCord, Nishida, Parks, Prakash N. Rao, Randy S. Rubin, Rubio, Teperman, Thomas E. Starzl, Thomas R. Walsh, Thomas Weber, Turner, Van Thiel   +32 more
core   +1 more source

Oxygen Defect Engineering of Hexagonal Perovskite Oxides to Boost Catalytic Performance for Aerobic Oxidation of Sulfides to Sulfones

Advanced Functional Materials, EarlyView.
Ru‐substituted hexagonal perovskite SrMnO3, featuring face‐shared oxygen species, is designed as an effective heterogeneous catalyst for the aerobic oxidation of sulfides. The catalyst demonstrates high selectivity to sulfones (>99%) under mild reaction conditions (≥30 °C). Ru substitution promotes oxygen vacancy formation of face‐shared oxygen species
Keiju Wachi, Masashi Makizawa, Takeshi Aihara, Shin Kiyohara, Yu Kumagai, Keigo Kamata   +5 more
wiley   +1 more source

Lipid Peroxidation Inhibition, Superoxide Anion and Nitric Oxide Radical Scavenging Properties of Thymus daenensis and Anethum graveolens Essential Oils

Journal of Medicinal Plants, 2011
Background: Safety and efficacy of the synthetic antioxidants used in the food industry are frequently questioned because such antioxidants are unstable and highly volatile, therefore, interest in finding naturally occurring antioxidants that have the ...
M Dadashpour, I Rasooli, F Sefidkon, MB Rezaei, S Darvish Alipour Astaneh   +4 more
doaj  

H2O2‐Generating Advanced Nanomaterials for Cancer Treatment

Advanced Functional Materials, EarlyView.
H2O2‐generating nanoplatforms can exploit tumor redox imbalance for O2 and toxic reactive oxygen species generation, leading to hypoxia reversal, and apoptosis of cancer cells, respectively. This review highlights the mechanisms of these nanoplatforms, including exogenous H₂O₂ delivery, endogenous amplification, and metal peroxides, which leads to ...
Kiyan Musaie, Samin Abbaszadeh, Kik Marais, Vahideh Nosrati‐Siahmazgi, Saman Rezaei, Bo Xiao, Kamal Dua, Hélder A. Santos, Mohammad‐Ali Shahbazi   +8 more
wiley   +1 more source

Changes in neuronal CycD/Cdk4 activity affect aging, neurodegeneration, and oxidative stress. [PDF]

, 2015
Mitochondrial dysfunction has been implicated in human diseases, including cancer, and proposed to accelerate aging. The Drosophila Cyclin-dependent protein kinase complex cyclin D/cyclin-dependent kinase 4 (CycD/Cdk4) promotes cellular growth by ...
de la Cruz, Aida Flor A, Edgar, Bruce A, Icreverzi, Amalia, Walker, David W   +3 more
core   +1 more source

Antioxidant and Anti‐Senescence Polyvinyl Alcohol‐Gallic Acid Supramolecular Hydrogels for Stem Cell Culture

Advanced Healthcare Materials, EarlyView.
The PVA‐GA hydrogel is formed through hydrogen bonding between PVA hydroxyl groups and GA galloyl units, enabling sustainable GA release and its extended biological activity. The hydrogel scavenges ROS to reduce oxidative stress, preventing mitochondrial damage from excessive ROS, mitigating hADSC senescence, and preserving VEGF secretion, offering a ...
Yiduo Zhou, Matías L. Picchio, Yan Nie, Lei Wang, Oihane Sanz, Yue Liu, Xun Xu, Lukas Prantl, Oliver Felthaus, Weiwei Wang, Marcelo Calderón, Nan Ma   +11 more
wiley   +1 more source

Amperometric enzyme sensor to check the total antioxidant capacity of several mixed berries. comparison with two other spectrophotometric and fluorimetric methods [PDF]

, 2015
The aim of this research was to test the correctness of response of a superoxide dismutase amperometric biosensor used for the purpose of measuring and ranking the total antioxidant capacity of several systematically analysed mixed berries.
CAMPANELLA, Luigi, Elisa Mazzone, Maruschka Serone, Riccardo Angeloni, TOMASSETTI, Mauro   +4 more
core   +2 more sources