Superoxide Dismutase in Cultured Benign and Malignant Tumors of the Colon

  • Richard L. Nelson
Part of the Basic Life Sciences book series (BLSC, volume 49)


A relative deficiency of the mitochondrial allele of superoxide dismutase (SODb) has been found in a variety of cancers both in vivo and in vitro. A decrease in the activity of SODb also has been described in cells from patients with two conditions that often are associated with cancer development, Down’s syndrome and Dubin-Johnson-Sprinz syndrome. Because of these associations it has been hypothesized that SODb deficiency not only is a good biochemical marker for the malignant phenotype, but also may play a central role in oncogenesis.1 More specifically, cells that are unable to induce or turn on SODb either prior to or as a result of initiation are more susceptible to the oxidative damage induced by tumor promoters.2,3


Colon Cancer Malate Dehydrogenase Colonic Epithelium Colonic Adenoma Familial Polyposis Coli 
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Copyright information

© Plenum Press, New York 1988

Authors and Affiliations

  • Richard L. Nelson
    • 1
  1. 1.University of Illinois College of Medicine at ChicagoChicagoUSA

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