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| Content Provider | Springer Nature Link |
|---|---|
| Author | Giovannelli, L. Testa, G. De Filippo, C. Cheynier, V. Clifford, M.N. Dolara, P. |
| Copyright Year | 2000 |
| Abstract | Background: Dietary polyphenols have been reported to have a variety of biological actions, including anti-carcinogenic, antioxidant and anti-inflammatory activities. Aim of the study: In the present study we have evaluated the effect of an oral treatment with complex polyphenols and tannins from red wine and tea on DNA oxidative dammage in the rat colon mucosa. Methods: Isolated colonocytes were prepared from the colon mucosa of rats treated for ten days with either wine complex polyphenols (57.2 mg/kg/d) or thearubigin (40 mg/kg/d) by oral gavage. Colonocyte oxidative DNA damage was analysed at the single cell level using a modification of the comet assay technique. Results: These results show that wine complex polyphenols and tannins induce a significant decrease (−62% for pyrimidine and −57% for purine oxidation) in basal DNA oxidative damage in colon mucosal cells without affecting the basal level of single-strand breaks. On the other hand, tea polyphenols, namely a crude extract of thearubigin, did not affect either strand breaks or pyrimidine oxidation in colon mucosal cells. Conclusions Our experiments are the first demonstration that dietary polyphenols can modulate in vivo oxidative damage in the gastrointestinal tract of rodents. These data support the hypothesis that dietary polyphenols might have both a protective and a therapeutic potential in oxidative damage-related pathologies. |
| Starting Page | 207 |
| Ending Page | 212 |
| Page Count | 6 |
| File Format | |
| ISSN | 14366207 |
| Journal | European Journal of Nutrition |
| Volume Number | 39 |
| Issue Number | 5 |
| e-ISSN | 14366215 |
| Language | English |
| Publisher | Steinkopff-Verlag |
| Publisher Date | 2000-10-01 |
| Publisher Place | Darmstadt |
| Access Restriction | One Nation One Subscription (ONOS) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nutrition and Dietetics Medicine |
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