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Int. J. Mol. Sci. 2019, 20(3), 754;

Protective Effect of Koumine, an Alkaloid from Gelsemium Sempervirens, on Injury Induced by H2O2 in IPEC-J2 Cells

Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, China
Hunan Co-Innovation Center for Utilization of Botanical Functional Ingredients, Changsha 410128, China
Department of Hunan Agricultural Product Processing Institute, Changsha 410128, China
Authors to whom correspondence should be addressed.
Received: 7 January 2019 / Revised: 1 February 2019 / Accepted: 2 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Alkaloids—Pharmacology, Toxicology, and Medicinal Uses)
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Medicinal herbal plants have been commonly used for intervention in different diseases and improvement of health worldwide. Koumine, an alkaloid monomer found abundantly in Gelsemium plants, can be effectively used as an antioxidant. The purpose of this study was to evaluate the potential protective effect of koumine against hydrogen peroxide (H2O2)-induced oxidative stress and apoptosis in porcine intestinal epithelial cell line (IPEC-J2 cells). MTT assays showed that koumine significantly increased cell viability in H2O2-mediated IPEC-J2 cells. Preincubation with koumine ameliorated H2O2-medicated apoptosis by decreasing reactive oxygen species (ROS) production, and efficiently suppressed the lactate dehydrogenase (LDH) release and malondialdehyde (MDA) production. Moreover, a loss of superoxide dismutase (SOD), catalase (CAT) and glutathione (GSH) activities was restored to normal level in H2O2-induced IPEC-J2 cells upon koumine exposure. Furthermore, pretreatment with koumine suppressed H2O2-mediated loss of mitochondrial membrane potential, caspase-9 and caspase-3 activation, decrease of Bcl-2 expression and elevation of Bax expressions. Collectively, the results of this study indicated that koumine possesses the cytoprotective effects in IPEC-J2 cells during exposure to H2O2 by suppressing production of ROS, inhibiting the caspase-3 activity and influencing the expression of Bax and Bcl-2. Koumine could potentially serve as a protective effect against H2O2-induced apoptosis. View Full-Text
Keywords: koumine; IPEC-J2 cells; H2O2; apoptosis koumine; IPEC-J2 cells; H2O2; apoptosis

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Yuan, Z.; Liang, Z.; Yi, J.; Chen, X.; Li, R.; Wu, Y.; Wu, J.; Sun, Z. Protective Effect of Koumine, an Alkaloid from Gelsemium Sempervirens, on Injury Induced by H2O2 in IPEC-J2 Cells. Int. J. Mol. Sci. 2019, 20, 754.

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