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https://hdl.handle.net/2440/27492
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Type: | Journal article |
Title: | Resistant starch attenuates colonic DNA damage induced by higher dietary protein in rats |
Author: | Toden, S. Bird, A. Topping, D. Conlon, M. |
Citation: | Nutrition and Cancer: an international journal, 2005; 51(1):45-51 |
Publisher: | Lawrence Erlbaum Assoc Inc |
Issue Date: | 2005 |
ISSN: | 0163-5581 1532-7914 |
Statement of Responsibility: | Shusuke Toden, Anthony R. Bird, David L. Topping, and Michael A. Conlon |
Abstract: | Epidemiologic studies suggest that dietary complex carbohydrates are protective against colorectal cancer but dietary protein may increase risk. However, experimental data to support these relationships are scant. We have shown in rats that consumption of a high-protein (25% casein) diet for 4 wk resulted in a twofold increase in damage to colonocyte DNA compared with a low-protein (15% casein) diet. This was associated with thinning of the colonic mucous barrier and increased levels of fecal p-cresol. Addition of resistant starch as a high-amylose maize starch to the diet increased cecal short-chain fatty acid pools and attenuated DNA damage, suggesting protection against genotoxic agents. In humans, this could translate to altered risk of colonic cancer. |
Keywords: | Intestinal Mucosa Colon Feces Animals Rats Rats, Sprague-Dawley DNA Damage Cresols Starch Fatty Acids, Volatile Dietary Proteins DNA Comet Assay Random Allocation Cell Division Male |
Rights: | © 2005, Lawrence Erlbaum Associates, Inc. |
DOI: | 10.1207/s15327914nc5101_7 |
Published version: | http://dx.doi.org/10.1207/s15327914nc5101_7 |
Appears in Collections: | Aurora harvest 6 Molecular and Biomedical Science publications |
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