Catalase activity may be measured quantitatively by the method of von Euler and Josephson (1) by allowing the enzyme solution to react with hydrogen peroxide for varying periods of time and measuring the excess peroxide remaining by titration with potassium permanganate. The similarity of this titration procedure to the assay of ascorbic acid by titration with 2:6-dichlorophenolindophenol sugge...

the aim of this study was to investigate the effects of administering antioxidants, including vitamin c and chitosan on oxidative stress markers in muscle as edible tissues of cyprinus carpio exposed to cadmium chloride. in this experiment, by exposing to 0.2 mg/l cadmium chloride for 21 days, fish were fed a normal diet, diet containing chitosan (1000 mg/kg diet), vitamin c (1000 mg/kg diet) o...

on July 21, 2017. © 1995 American Association for Cancer Research. cancerres.aacrjournals.org Downloaded from CATALASE AS A GROWTH.PROMOTING FACFOR with the primary amino acid sequences obtained from human catalase cDNA (Table 1). It was of note that the lysine residue, which is hydrolyzed by the lysyl endopeptidase, was found in just prior to the sequenced peptides. Catalase Activity of the PU...

Wallace, W. R. (Louisiana State University, Baton Rouge), and G. T. Dimopoullos. Catalase activity in Anaplasma marginale. J. Bacteriol. 91:309-311. 1965.-Extracts of erythrocytes infected with Anaplasma marginale were found to contain more catalase activity than normal erythrocytic preparations. The increase in catalase activity appeared concurrently with increases in the number of erythrocyte...

Experiments are described further indicating that 02-resistant photosynthesis observed in a tobacco (Nicotiana tabacum) mutant with enhanced catalase activity is associated with decreased photorespiration under conditions of high photorespiration relative to net photosynthesis. The effects on net photosynthesis of (a) increasing O2 concentrations from 1% to 42% at low CO2 (250 microliters CO2 p...

OBJECTIVE Elevated levels of oxidative stress have been reported in abdominal aortic aneurysms (AAA), but which reactive oxygen species promotes the development of AAA remains unclear. Here, we investigate the effect of hydrogen peroxide (H2O2)-degrading enzyme catalase on the formation of AAA. APPROACH AND RESULTS AAA were induced with the application of calcium chloride (CaCl2) on mouse inf...

Pix is a plant growth regulators thatinterfereswithotherhormones and affectthegerminationandgrowthof cotton.In thisstudythe effect ofdifferentconcentrationsof pix, namely, 0 (control),10, 20, 30and40 ppm on germination,radicledry weight, radiclelength,insolubleandsoluble sugarsandantioxidantenzymes activity (catalase, peroxidase and poly phenol oxidase) incottonseedling (Gossypium hirsutum L.cv...