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Received: Revised: Accepted: Published online: February 20, 2017 August 04, 2017 August 17, 2017 June 22, 2019 Hypothalamic-pituitary-adrenal (HPA) axis plays an important role in stress response. However, in Suhuai sows, the relationship between glucocorticoid and oxidative stress is not yet understood. We found that malondialdehyde (MDA) level was increased, whereas the activity of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GSH-Px), were decreased after ACTH treatment in Suhuai sow. Moreover, glutathione (GSH) level and total antioxidant capacity (T-AOC) were also decreased upon ACTH treatment. Moreover, we found that mRNA expression levels of antioxidant enzymes such as SOD, CAT, and GPX, were down-regulated in the ACTH group. We observed that the mRNA expression of glucocorticoid-responsive elements (GRE) such as CXCR4, DUSP1, IL7R, TXNIP, and Fkbp5 were upregulated, whereas DNA methylation in intron 6 of Fkbp5 was reduced by ACTH administration. Hence, our findings suggest that ACTH induces oxidative stress and increases the expression level of Fkbp5 by decreasing DNA methylation in the GRE region in Suhuai sow. ©2017 PVJ. All rights reserved

ACTH Induces Oxidative Stress and Decreases DNA Methylation of Fkbp5 in Suhuai Sow