Results 1 to 10 of about 533,417 (207)

Colostrum-Derived Melatonin Plus PEG Microspheres Modulate the Oxidative Metabolism of Human Colostrum Phagocytes [PDF]

Metabolites
Background/Objectives: Exogenous melatonin adsorbed onto PEG microspheres can modulate the functional activity of phagocytes in colostrum, but no data are available on the activity of melatonin found in colostrum.
Caroline G. Silva, Viviane F. Luz, Victor L. Nunes, Ana B. M. Verzoto, Aron C. de M. Cotrim, Wagner B. dos Santos, Eduardo L. França, Adenilda C. Honorio-França   +7 more
doaj   +2 more sources

Constraints on superoxide mediated formation of manganese oxides

Frontiers in Microbiology, 2013
Manganese (Mn) oxides are among the most reactive sorbents and oxidants within the environment, where they play a central role in the cycling of nutrients, metals, and carbon.
Deric R Learman, Colleen M Hansel
exaly   +3 more sources

Depth-resolved photochemical production of hydrogen peroxide in the global ocean using remotely sensed ocean color

Frontiers in Remote Sensing, 2022
Hydrogen peroxide (H2O2) is an important reactive oxygen species (ROS) in natural waters, affecting water quality via participation in metal redox reactions and causing oxidative stress for marine ecosystems.
Yuting Zhu, Leanne C. Powers, David J. Kieber, William L. Miller   +3 more
doaj   +1 more source

DECREASE IN THE CONTENT OF REACTIVE OXYGEN SPECIES DURING INACTIVATION OF THE RESPIRATORY COMPLEX I IN ARABIDOPSIS CELLS

Siberian Journal of Life Sciences and Agriculture, 2022
Background. The mitochondrial electron transport chain, in particular the respiratory complex I, is one of the main sources of reactive oxygen species (ROS) in living cells. Suppression of the complex I activity in human cells through chemical inhibition
Vladislav I. Tarasenko, Elena Y. Garnik, Vladimir N. Shmakov, Yuri M. Konstantinov   +3 more
doaj   +1 more source

Selective superoxide generation within mitochondria by the targeted redox cycler MitoParaquat [PDF]

, 2015
Superoxide is the proximal reactive oxygen species (ROS) produced by the mitochondrial respiratory chain and plays a major role in pathological oxidative stress and redox signaling.
Aksentijević, Dunja, Bright, Thomas P., Cocheme, Helena M., Gawel, Justyna M., Hartley, Richard C., James, Andrew M., Murphy, Michael P., Prime, Tracy A., Qiang, He, Robb, Ellen L., Senn, Hans M., Shattock, Michael J., Shchepinova, Maria M., Stewart, Tessa S.   +13 more
core   +1 more source

Detection of Superoxide Alterations Induced by 5-Fluorouracil on HeLa Cells with a Cell-Based Biosensor

Biosensors, 2019
Background: In vitro cell culture monitoring can be used as an indicator of cellular oxidative stress for the assessment of different chemotherapy agents.
Sophia Mavrikou, Vasileios Tsekouras, Maria-Argyro Karageorgou, Georgia Moschopoulou, Spyridon Kintzios   +4 more
doaj   +1 more source

Influence of hyperhomocysteinemia on the cellular redox state - Impact on homocysteine-induced endothelial dysfunction [PDF]

, 2003
Hyperhomocysteinemia is an independent risk factor for the development of atherosclerosis. An increasing body of evidence has implicated oxidative stress as being contributory to homocysteines deleterious effects on the vasculature.
Adachi T, Andersson A, Bagi Z, Bellamy MF, Chambers JC, Chambers JC, Chao CL, Flohé L, Forgione MA, Guttormsen AB, Huang R-FS, Kanani PM, Karlsson K, Lang D, Lentz SR, Mansoor MA, Mansoor MA, Mansoor MA, Mansoor MA, O'Donnell VB, Outinen PA, Pritchard, Rubbo H, Tawakol A, Ungvari Z, Weiss N, Wilcken DE, Woo KS, Zhang F, Zhang X   +29 more
core   +1 more source

Vasomotor Regulation of Coronary Microcirculation by Oxidative Stress: Role of Arginase

Frontiers in Immunology, 2013
Overproduction of reactive oxygen species, i.e., oxidative stress, is associated with the activation of redox signaling pathways linking to inflammatory insults and cardiovascular diseases by impairing endothelial function and consequently blood flow ...
Lih eKuo, Lih eKuo, Lih eKuo, Travis eHein, Travis eHein   +4 more
doaj   +1 more source

The crystal structure of superoxide dismutase from Plasmodium falciparum [PDF]

, 2006
Background: Superoxide dismutases (SODs) are important enzymes in defence against oxidative stress. In Plasmodium falciparum, they may be expected to have special significance since part of the parasite life cycle is spent in red blood cells where the ...
Boucher, Ian W., Brannigan, James A., Brzozowski, Andrzej M., Kyes, Sue A., Schnick, Claudia, Smith, Derek J., Wilkinson, Anthony J.   +6 more
core   +3 more sources

Role of nitric oxide and superoxide in Giardia lamblia killing

Brazilian Journal of Medical and Biological Research, 1997
Giardia lamblia trophozoites were incubated for 2 h with activated murine macrophages, nitric oxide (NO) donors or a superoxide anion generator (20 mU/ml xanthine oxidase plus 1 mM xanthine). Activated macrophages were cytotoxic to Giardia trophozoites (~
P.D. Fernandes, J. Assreuy
doaj   +1 more source