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Supplementation of a grape seed and grape marc meal extract decreases activities of the oxidative stress-responsive transcription factors NF-kappaB and Nrf2 in the duodenal mucosa of pigs

Gessner, Denise ; Fiesel, Anja ; Most, Erika ; Dinges, Jennifer ; Wen, Gaiping ; Ringseis, Robert ; Eder, Klaus

Originalveröffentlichung: (2013) Acta Veterinaria Scandinavica 55(1):18 doi:10.1186/1751-0147-55-18
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URN: urn:nbn:de:hebis:26-opus-100545

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Freie Schlagwörter (Englisch): NF-kappaB , Nrf2 , olyphenol , pig , intestine
Sammlung: Open Access - Publikationsfonds
Universität Justus-Liebig-Universität Gießen
Fachgebiet: Veterinärmedizin
DDC-Sachgruppe: Landwirtschaft
Dokumentart: Aufsatz
Sprache: Englisch
Erstellungsjahr: 2013
Publikationsdatum: 20.08.2013
Kurzfassung auf Englisch: BACKGROUND:In pigs, enteric infections and the development of gut disorders such as diarrhoea are commonly observed, particularly after weaning. The present study investigated the hypothesis that feeding a grape seed and grape marc extract (GSGME) as a dietary supplement has the potential to suppress the inflammatory process in the small intestine of pigs by modulating the activities of NF-kappaB and Nrf2 due to its high content of flavonoids. METHODS:Twenty-four crossbred, 6 weeks old pigs were randomly assigned to 2 groups of 12 animals each and fed nutritionally adequate diets without or with 1% GSGME for 4 weeks. RESULTS:Pigs administered GSGME had a lower transactivation of NF-kappaB and Nrf2 and a lower expression of various target genes of these transcription factors in the duodenal mucosa than control pigs (P<0.05). Concentrations of alpha-tocopherol and thiobarbituric acid reactive substances (TBARS) in liver and plasma and total antioxidant capacity of plasma and relative mRNA abundances of NF-kappaB and Nrf2 target genes in the liver did not differ between the two groups. However, the ratio of villus height:crypt depth and the gain:feed ratio was higher in the pigs fed GSGME than in control pigs (P<0.05). CONCLUSIONS:This study shows that dietary supplementation of a polyphenol rich GSGME suppresses the activity of NF-kappaB in the duodenal mucosa of pigs and thus might provide a useful dietary strategy to inhibit inflammation in the gut frequently occurring in pigs. Feeding GSGME did not influence vitamin E status and the antioxidant system of the pigs but improved the gain:feed ratio. In overall, the study suggests that polyphenol-rich plant extracts such GSGME could be useful feed supplements in pig nutrition, in order to maintain animal health and improve performance.
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