Titanium doping reduces superoxide dismutase activity, but not oxidase activity, of catalytic CeO2 nanoparticles

Glycation of erythrocyte superoxide dismutase reduces its activity.

purified. Purified SOD was incubated with 1 M glucose at 37 •Ž for 14d under sterile conditions. Nonezymatic addition of glucose to SOD molecules increased linearly until 7 d, and then increased only slightly. The enzyme activity decreased to 88% after 7d and 60% after 14d. The glycated amino acid residue is not the N-terminal a-amino group but the s-amino group of lysine. It seems that lysine ...

Nanoparticles of Cerium Oxide Having Superoxide Dismutase Activity

comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

Superoxide dismutase activity in leukocytes.

Superoxide dismutase activity has been identified in both human neutrophils and rabbit alveolar macrophages by two distinct assay procedures. The enzyme is insensitive to both cyanide and azide and is present in the cytosol of the cell. The identification of this enzyme in phagocytic cells is compatible with the theory that superoxide anion might be involved in the bactericidal activity of the ...

the plasma antioxidant activity of superoxide dismutase enzyme in osteoporosis

osteoporosis is a metabolic disease characterized by reduction in bone density and susceptibility to deformity and fracture. some studies show that osteoblasts can create inter-cellular free radicals that lead to cellular death. superoxide dismutase (sod) plays an essential role in cell defense against reactive oxygen metabolites. the purpose of this study was to measure the plasma sod activiti...