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Original

Tissue distribution of lipid peroxidation product acrolein in human colon carcinogenesis

, , , &
Pages 543-552 | Received 05 Aug 2005, Published online: 07 Jul 2009
 

Abstract

Lipid peroxidation product acrolein, well-known pollutant in tobacco and automotive smoke, accumulates in vivo bound to proteins. It suppresses p53 synthesis acting as potent carcinogenic factor for oral, respiratory and bladder carcinomas, while its possible association with colon carcinogenesis was not studied so far. We used genuine monoclonal antibody to evaluate immunohistochemical distribution of acrolein–protein adducts in 113 human colon tumours. The presence of acrolein–protein adducts was increasing with respect to colon carcinogenesis, from moderate appearance in tubular and villotubular low-grade adenomas to abundant and diffuse distribution in high-grade villotubular adenomas and Dukes A carcinomas. However, in advanced Dukes B and C carcinomas acrolein was hardly noticed, although, its protein adducts were found abundant in non-malignant colon epithelium of these patients. There was no relationship between p53 and acrolein distribution. According to these findings, acrolein seems to be lipid peroxidation product associated with transition from benign into malignant colon tumours.

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