It has been recognized that lactic acid bacteria exhibit antioxidant properties, which have been mainly endorsed to the intact viable bacteria. However, recent studies have shown that intracellular content (IC) may also be good sources of antioxidative metabolites, which may potentially contribute to oxidative homeostasis in vivo. Hence, the modulatory effect of the intracellular content of Lactobacillus casei CRL 431 (IC431) on aflatoxin B (AFB )-induced oxidative stress in rats was evaluated on the 1 1 basis of its influence on hepatic lipid peroxidation (LPO), antioxidant status-antioxidant capacity (TAC), catalase (CAT), and glutathione peroxidase (GPx) activities; and on the oxidative stress index (OSi). Results demonstrated that CAT and GPx activities, and TAC, determined in plasma samples, were significantly (P< 0.05) higher in rats treated with AFB plus IC431 (3.98 μM/min/mg protein, 1.88 μM/min/mg protein, and 238.7 μM Trolox equivalent, respectively) than AFB -treated rats (3.47 μM/min/mg protein, 1.46 μM/min/mg protein, and 179.7 μM Trolox equivalent, respectively). Furthermore, plasma and liver tissue samples from rats treated with AFB plus IC431 showed significantly (P< 0.05) lower LPO values (52 and 51%, respectively) and OSi (59 and 51%, respectively) than AFB -treated rats. Hence, our results proved that the intracellular content of
Probiotics and Antimicrobial Proteins – Springer Journals
Published: Jun 3, 2018
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