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  • 1 Institute of Food Processing and Quality Assurance, Centre of Agricultural Sciences, University of Debrecen, Faculty of Agronomy Debrecen, Hungary
  • 2 a II. Department of Surgery, Semmelweis University Please ask the editor of the journal.
  • 3 Fodor József National Centre of Public Health, National Institute of Food-Hygiene and Nutrition H-1097 Budapest, Gyáli út 3/a. Hungary
  • 4 a II. Department of Surgery, Semmelweis University Please ask the editor of the journal.
  • 5 Department of Biochemistry and Food Technology, Budapest University of Technology and Economics H-1111 Budapest, Műegyetem rkp. 3. Hungary
  • 6 a II. Department of Surgery, Semmelweis University Please ask the editor of the journal.
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An experimental surgical model was developed in rats after a short term alimentary induced hyperlipidemy to study the direct effect of bile on the colonic mucosa, with regard to the cancerogenic properties of lipid rich diet. The purpose of this study was to light on the role of fatty acid alteration and lipid peroxidation processes of bile in the epithelial cell damage. Animals were fed with normal (group A) and fat rich diet (group B) for 10 days and then bile samples were collected by the cannulation of the common bile duct in deep anaesthesia. The circulation preserved colons of control rats were treated either with bile from the control or hyperlipidemic rats. The treatment was carried out for 30 minutes. The electronmicroscopic alterations of epithelial cells (both enterocytes and goblet cells) caused by bile from hyperlipidemic rats were significantly greater than that of controls. Unfavourable changes of the redox state of the colonic mucosa were also detected both in the hyperlipidemic and bile treated groups. A significant increase was observed in the free-SH concentration of the two bile treated groups against the untreated animals. The changes could be explained among others by the modified bile fatty acid composition. The present study supports that the alimentary modified bile can influence the structure of the epithelium of colonic mucosa and it can be one of the inducing factor of carcinogenesis.

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