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Research ArticleExperimental Studies

Suppression of Tumour-promoting Factors in Fat-induced Colon Carcinogenesis by the Antioxidants Caroverine and Ubiquinone

HANS NOHL, NATALIA ROHR-UDILOVA, LARS GILLE, WERNER BIEBERSCHULTE, DANIELA JUREK, BRIGITTE MARIAN and ROLF SCHULTE-HERMAN
Anticancer Research July 2005, 25 (4) 2793-2800;
HANS NOHL
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  • For correspondence: hans.nohl@vu-wien.ac.at
NATALIA ROHR-UDILOVA
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LARS GILLE
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WERNER BIEBERSCHULTE
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DANIELA JUREK
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BRIGITTE MARIAN
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ROLF SCHULTE-HERMAN
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Abstract

Fatty acid hydroperoxides are produced from unsaturated fatty acids in the presence of oxygen at elevated temperatures during food processing. Their effects on gene expression in colorectal tumour cells were studied using linoleic acid hydroperoxide (LOOH) as a model compound. Addition of LOOH to the medium of LT97 adenoma and SW480 carcinoma cells enhanced the production of hydrogen peroxide. Both cell lines were observed to increase VEGF factors based on mRNA. High consumption of dietary fat promotes colon carcinogenesis in the long term. While this effect is well known, the underlying mechanisms are not understood. An approach was made starting from the assumption that LOOH is present in dietary fats as a result of heating. LOOH undergoes homolytic cleavage in the presence of iron. Various radicals are formed on mixing LT97 or SW480 cells with LOOH. The expression of tumour-promoting factors was inhibited by caroverine and ubiquinone, which may be justified as active chemopreventive agents.

  • Tumour-promoting factors
  • fat
  • colon
  • carcinogenesis
  • caroverine
  • ubiquinone

Footnotes

  • Received February 25, 2005.
  • Accepted April 12, 2005.
  • Copyright© 2005 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved
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Anticancer Research: 25 (4)
Anticancer Research
Vol. 25, Issue 4
1 Jul 2005
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Suppression of Tumour-promoting Factors in Fat-induced Colon Carcinogenesis by the Antioxidants Caroverine and Ubiquinone
HANS NOHL, NATALIA ROHR-UDILOVA, LARS GILLE, WERNER BIEBERSCHULTE, DANIELA JUREK, BRIGITTE MARIAN, ROLF SCHULTE-HERMAN
Anticancer Research Jul 2005, 25 (4) 2793-2800;

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Suppression of Tumour-promoting Factors in Fat-induced Colon Carcinogenesis by the Antioxidants Caroverine and Ubiquinone
HANS NOHL, NATALIA ROHR-UDILOVA, LARS GILLE, WERNER BIEBERSCHULTE, DANIELA JUREK, BRIGITTE MARIAN, ROLF SCHULTE-HERMAN
Anticancer Research Jul 2005, 25 (4) 2793-2800;
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