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Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue
Journal article   Peer reviewed

Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue

Christine J Weydert and Joseph J Cullen
Nature protocols, Vol.5(1), pp.51-66
01/2010
DOI: 10.1038/nprot.2009.197
PMCID: PMC2830880
PMID: 20057381

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Abstract

Cells contain a large number of antioxidants to prevent or repair the damage caused by reactive oxygen species, as well as to regulate redox-sensitive signaling pathways. General protocols are described to measure the antioxidant enzyme activity of superoxide dismutase (SOD), catalase and glutathione peroxidase. The SODs convert superoxide radical into hydrogen peroxide and molecular oxygen, whereas the catalase and peroxidases convert hydrogen peroxide into water. In this way, two toxic species, superoxide radical and hydrogen peroxide, are converted to the harmless product water. Western blots, activity gels and activity assays are various methods used to determine protein and activity in both cells and tissue depending on the amount of protein required for each assay. Other techniques including immunohistochemistry and immunogold can further evaluate the levels of the various antioxidant enzymes in tissues and cells. In general, these assays require 24-48 h to complete.
Cell Line Glutathione Peroxidase - metabolism Tissue Culture Techniques Hydrogen Peroxide - metabolism Catalase - metabolism Immunohistochemistry - methods Superoxide Dismutase - chemistry Animals Glutathione Peroxidase - chemistry Superoxides - metabolism Mice Cell Culture Techniques Superoxide Dismutase - metabolism Voltage-Dependent Anion Channels Catalase - chemistry

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