Results 61 to 70 of about 147,440 (362)

Pulse radiolysis studies on superoxide reductase from Treponema pallidum [PDF]

FEBS Letters, Elsevier, 2001, 497, pp.171-3, 2015
Superoxide reductases (SORs) are small metalloenzymes, which catalyze reduction of O2*- to H2O2. The reaction of the enzyme from Treponema pallidum with superoxide was studied by pulse radiolysis methods. The first step is an extremely fast bi-molecular reaction of the ferrous center with O2, with a rate constant of 6 x 10 (8) M(-1) s(-1).
arxiv   +1 more source

The Regulation of Trace Metal Elements in Cancer Ferroptosis

Advanced Biology, EarlyView.
The induction of ferroptosis inhibits tumor growth, enhances anticancer efficacy, and overcomes drug resistance. Recent evidence shows nonferrous metal elements play a role in ferroptosis. This review focuses on how trace metals regulate ferroptosis processes like iron accumulation, lipid peroxidation, and antioxidant defense.
Xiaoyan Wang, Yuanyuan Xue, Lei Chang, Xuena Zhu, Wenjun Liu, Tingbo Liang   +5 more
wiley   +1 more source

A Hypoxia‐Triggered Bioreduction of Hydrophilic Type I Photosensitizer for Switchable In Vivo Photoacoustic Imaging and High‐Specificity Cancer Phototherapy

Angewandte Chemie, EarlyView.
A hydrophilic type I phototherapeutic agent (NanoPcN8O) was developed which selectively responded to hypoxic tumor microenvironments and switched on type I photodynamic and photothermal effects as well as a photoacoustic signal for activatable photoacoustic imaging and tumor phototherapy.
Yuan‐Yuan Zhao, Yihui Xu, Xiaojun Zhang, Zixuan Chen, Heejeong Kim, Xingshu Li, Juyoung Yoon   +6 more
wiley   +2 more sources

Plasmodium falciparum glutamate dehydrogenase a is dispensable and not a drug target during erythrocytic development [PDF]

, 2011
<p>Background: Plasmodium falciparum contains three genes encoding potential glutamate dehydrogenases. The protein encoded by gdha has previously been biochemically and structurally characterized.
Aparicio, I., Engel, P.C., Llinas, M., Muller, S., Olszewski, K., Patzewitz, E.-M., Perner, J., Storm, J.   +7 more
core   +4 more sources

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

Red Cell Glutathione and Glutathione Reductase in Cystic Fibrosis

Experimental Biology and Medicine, 1973
SummaryRed blood cell glutathione reductase and whole blood total (oxidized and reduced) glutathione were assayed in cystic fibrosis subjects and non-cystic fibrosis controls.
Warren J. Warwick, Burton L. Shapiro, Q. T. Smith   +2 more
openaire   +2 more sources

UV-B exposure, ROS, and stress: inseparable companions or loosely linked associates? [PDF]

, 2013
Ultraviolet-B (UV-B) radiation has long been perceived as a stressor. However, a conceptual U-turn has taken place, and UV-B damage is now considered rare.
Hideg, Éva, Jansen, Marcel A.K., Strid, Åke   +2 more
core   +2 more sources

Bioaccumulation and biochemical responses in mussels exposed to the water-accommodated fraction of the Prestige fuel oil

Scientia Marina, 2007
The activity of the antioxidant defences catalase (CAT, EC 1.11.1.6), glutathione peroxidase (t-GPX, EC 1.11.1.9), glutathione reductase (GR, EC 1.6.4.2), phase II glutathione S-transferase (GST, EC 2.5.1.18) along with the NADPH-dependent cytochrome c ...
Montserrat Solé, Astrid Buet, Laura Ortiz, Francesc Maynou, Josep Maria Bayona, Joan Albaigés   +5 more
doaj   +1 more source

Structure of superoxide reductase bound to ferrocyanide and active site expansion upon X-ray-induced photo-reduction [PDF]

Structure, 2004, 12, pp.1729-40, 2015
Some sulfate-reducing and microaerophilic bacteria rely on the enzyme superoxide reductase (SOR) to eliminate the toxic superoxide anion radical (O2*-). SOR catalyses the one-electron reduction of O2*- to hydrogen peroxide at a nonheme ferrous iron center. The structures of Desulfoarculus baarsii SOR (mutant E47A) alone and in complex with ferrocyanide
arxiv   +1 more source

Synthetic Bilirubin‐Based Nanomedicine Protects Against Renal Ischemia/Reperfusion Injury Through Antioxidant and Immune‐Modulating Activity

Advanced Healthcare Materials, Volume 14, Issue 7, March 14, 2025.
BX‐001N, a polyethylene glycol‐conjugated bilirubin 3α nanoparticle, is the first GMP‐grade, synthetic bilirubin‐based nanomedicine. It effectively attenuates acute renal injury, facilitates subacute renal recovery, and suppresses chronic fibrosis after renal ischemia/reperfusion injury via anti‐oxidant and immune‐modulating activity.
Ji‐Jing Yan, Hyunjin Kim, Bomin Kim, Honglin Piao, Joon Young Jang, Tae Kyeom Kang, Wook‐Bin Lee, Dohyeon Kim, Seunghyun Jo, Duckhyang Shin, Sharif MD Abuzar, Myung L. Kim, Jaeseok Yang, Sangyong Jon   +13 more
wiley   +1 more source