Catalase activity in grapevine (Vitis vinifera L.) buds cv. ;Perlette.' increased to a maximum in October and thereafter decreased within 3 months to less than half its maximal rate. The decrease in catalase activity coincided with the decline in temperature during winter. The rate of sprouting of buds forced at 23 degrees C was negatively related to the activity of catalase. Artificial chillin...

Injection of 3-amino-1,2,4-triazole into rats resulted in a rapid fall of liver catalase activity which gradually returned to the normal level, but the amount of catalase protein determined by the immunochemical method remained constant without any decrease in parallel with the enzyme activity. Inactivation occurred more rapidly with soluble catalase (or Catalase-II) than with catalase in perox...

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...

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...

One of the earliest reports on the systemic effects of tumors was made by Brahn (2), who found that the liver catalase activity of human beings with cancer of the rectum, stomach, pancreas, and intestine was very much lower than normal. This systemic phenomenon later was studied extensively by Greenstein et al. (4-8) with the use of a large number and variety of tumor-bearing mice and rats. How...

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...

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...

in order to evaluate of morphological, physiological and biochemical traits, related to drought tolerance, an experiment was carried out in field condition. in this study two commercial cultivars (mcc361, mcc358), three kabuli and three deci type of tolerant genotypes (mcc392, mcc537, mcc696, mcc873, mcc870, mcc10,) and three kabuli and three deci type of susceptible genotypes (mcc759, mcc588, ...

Catalase is an antioxidant enzyme the activity of which is crucial for the protection against damage caused by reactive oxygen species. The -262C>T polymorphism in the promoter region of catalase gene was found to be associated with altered catalase levels. In this study, peripheral blood mononuclear cells catalase activity was measured after H(2)O(2)-induced oxidative stress. C/T and T/T genot...