Superoxide Dismutase Activities of Ironporphyrins Modified with Poly (L-lysine)

superoxide dismutase activities in plasma of patients with breast cancer

background: superoxide radicals are produced during oxidative metabolic processes, and removed by superoxide dismutase (sod) enzymes. controversial results have been reported regarding the tissue and plasma concentration of sod in patients with breast cancer. methods: venous blood was obtained from study participants and activity of sod enzyme was determined in 100 women. comparison was made be...

Interaction of Poly-l-lysine with Chromatin

The priming capacity of chromatin of fixed nuclei and chromosomes for exogenous DNA polymerase can be evaluated radioautographically by the incorporation of labeled nucleotides. It had previously been reported that acid fixation or acid treatment of alcohol-fixed tissues led to increased priming when calf thymus DNA polymerases, specific for single-stranded DNA, were used. We employed Escherich...

A modified spectrophotometric assay of superoxide dismutase.

A simple and rapid method for the assay of superoxide dismutase in biological samples is described. Present method takes advantage of the inhibition of NADH-dependent-nitroblue tetrazolium reduction by the dismutase. Inhibition of the chromogen formation by superoxide dismutase was linear with increase in enzyme concentrations. The chromogen extract in butanol was stable even up to 48 hr. Super...

Superoxide dismutase Superoxide dismutase

Increased Serum Superoxide Dismutase and Catalase Activities in Streptozotocin-Induced Diabetic Rats

Abstract Background and Objective: One of the diabetes complications is the tissue damage caused by the imbalance of oxidants and antioxidants (oxidative stress). The aim of the present study was to evaluate the activity of two antioxidant enzymes -superoxide dismutase and catalase- in the serum of streptozotocin-induced diabetic rats. Material and Methods: This investigation was conduct...