These data, therefore, help explain why copper, in addition to being chemically more reactive, is more potent than iron at mediating LDL oxidation.doi:10.1074/jbc.270.10.5158Sean M. LynchBalz FreiJournal of Biological ChemistryLynch SM,Frei B. Reduction of Copper, but Not Iron,by Human Low ...
Ze-Jie Lv Kim A. Eisenlohr Sven Schneider Nature Chemistry (2024) Water-catalyzed iron-molybdenum carbyne formation in bimetallic acetylene transformation Xiaofang Zhai Minghui Xue Wenguang Wang Nature Communications (2024) Carbyne anions get to work Didier Bourissou Nature Synthesis (2023)Associa...
Ascorbic acid can have both pro- and anti-oxidant roles, and it reacts with reactive oxygen species (ROS) and transition metals. Ascorbic acid can be readily oxidized by undergoing a one- or two-electron transfer, terminating the free radical-mediated chain reactions in foods and tissue, reduc...
Modification of low density lipoproteins by human arterial smooth muscle cells was characterized by increased electrophoretic mobility and increased content of malondialdehyde-like oxidation products reactive with thiobarbituric acid. Lipoprotein modification was promoted by micromolar concentrations of iron or co...
Iron oxide,copper oxide, and other metal oxides are low-cost adsorbents that can effectively absorb heavy metals. Adsorption is mainly achieved by complexation of metal ions with oxygen atoms of metal oxides. Nanoscale metal oxides have higher adsorption capacity due to their larger specific surface...
Free-machining coppers have minor amounts (<1%) of other alloying elements added to improve the machinability of the copper. Free-machining copper can then be more easily machined into items such as welding nozzles and soldering iron tips. ...
Trace levels of zinc and copper have been determined in the aorta from individuals with known histories of coronary heart disease (experimental group) and from individuals without a history of heart disease (control group) or any condition with an alleged or known association with trace zinc and ...
Copper pans can be tricky to care for, but once you know the basics you’ll be off and running. Look for copper pans lined with stainless steel — this will make them sturdier and less reactive. Since copper heats up rapidly, you’ll need to keep it on moderate heat or lower and let...
SOD1 is a metalloenzyme that coordinates one copper and one zinc in the protein, and forms a dimer to exert full enzymatic activity to convert superoxide to oxygen and hydrogen peroxide, thus eliminating reactive oxygen species harmful to the cells. ...
enzymes such as glucose 6-phosphate dehydrogenase and glutathione reductase. In addition, copper can interact with oxygen species (e.g. superoxide anions, hydrogen peroxide) and catalyse the production of reactive toxic hydroxyl radicals. Copper (II) ions can oxidize haem iron to form methaemoglobin...