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Antioxidants 2016, 5(4), 41; doi:10.3390/antiox5040041

In Vitro Investigation of Six Antioxidants for Pig Diets

1
Laboratory of Applied Veterinary Morphology, Department of Veterinary Sciences, Faculty of Biomedical, University of Antwerp, Wilrijk 2610, Belgium
2
Department of Applied Biosciences, Faculty of Bioscience Engineering, Ghent University, Ghent 9000, Belgium
3
Laboratory for Animal Nutrition and Animal Product Quality (LANUPRO), Department of Animal Production, Faculty of Bioscience Engineering, Ghent University, Melle 9090, Belgium
*
Author to whom correspondence should be addressed.
Academic Editor: Dong Uk Ahn
Received: 7 August 2016 / Revised: 3 October 2016 / Accepted: 2 November 2016 / Published: 11 November 2016
(This article belongs to the Special Issue Lipid Oxidation in Meat and Poultry)
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Abstract

Oxidative stress in the small intestinal epithelium can lead to barrier malfunction. In this study, the effect of rosmarinic acid (RA), quercetin (Que), gallic acid (GA), lipoic acid (LA), ethoxyquin (ETQ) and Se-methionine (SeMet) pre-treatments using 2 mM Trolox as a control on the viability and the generation of intracellular reactive oxygen species (iROS) of oxidatively (H2O2) stressed intestinal porcine epithelial cells (IPEC-J2) was investigated. A neutral red assay showed that RA (50–400 µM), Que (12.5–200 µM), GA (50–400 µM), ETQ (6.25–100 µM), and SeMet (125–1000 µM) pre-treatments but not LA significantly increased the viability of H2O2-stressed IPEC-J2 cells (p < 0.05). A 5-(and-6)-chloromethyl-2′,7′-dichlorodihydrofluorescein diacetate, acetyl ester (CM-H2DCFDA) fluorescent probe showed that RA (100–600 µM), Que (25–800 µM), ETQ (3.125–100 µM) and SeMet (500–2000 µM) pre-treatments significantly reduced iROS in IPEC-J2 monolayers (p < 0.05). Moreover, RA and Que were most effective in reducing iROS. Therefore, the effects of RA and Que on barrier functioning in vitro were examined. RA and Que pre-treatments significantly decreased fluorescein isothiocyanate (FITC)-conjugated dextran-4 (4 kDa) permeability and transepithelial electrical resistance (TEER) of an IPEC-J2 cell monolayer (p < 0.05). These in vitro results of RA and Que hold promise for their use as antioxidants in pig feed. View Full-Text
Keywords: antioxidant pre-treatment; hydrogen peroxide; IPEC-J2 cells; small intestinal epithelial permeability; oxidative stress antioxidant pre-treatment; hydrogen peroxide; IPEC-J2 cells; small intestinal epithelial permeability; oxidative stress
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MDPI and ACS Style

Vergauwen, H.; Prims, S.; Degroote, J.; Wang, W.; Casteleyn, C.; van Cruchten, S.; de Smet, S.; Michiels, J.; van Ginneken, C. In Vitro Investigation of Six Antioxidants for Pig Diets. Antioxidants 2016, 5, 41.

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