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L-type calcium channel blockers decrease the iron overload-mediated oxidative stress in renal epithelial cells by reducing iron accumulation.

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机构： [a]Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, China [b]Class 2 of Grade 2017, College of Animal Science, South China Agricultural University, Guangzhou, 510642, China [c]Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand [d]Department of Neurology, Chongqing Medical University Affiliated Children’s Hospital, Chongqing, 400014, China [e]Institute for Cancer Medicine, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan, 646000, China

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关键词： Nifedipine Verapamil Iron overload Renal epithelial cells Oxidative stress L-type calcium channel

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Iron-mediated oxidative stress has been recognized as one of the leading causes of chronic kidney injury. The effect of L-type calcium channel (LTCC) blocker on iron overload has been shown in cardiomyocytes, liver cells, and nerve cells. So far, few studies have examined whether blockers improve kidney iron-mediated oxidative stress. Yet, the precise mechanism through which blockers regulate kidney iron transport still remains unclear. In the present work, treatment with nifedipine or verapamil decreased oxidative stress and reduced the cell apoptosis-induced by ferric ammonium citrate (P < 0.05), decreased cellular iron contents, and prevented the rising of iron level-induced by ferric ammonium citrate (P > 0.05) in HK-2 and HEK293 cells. Besides, nifedipine and verapamil treatments increased the expression of divalent metal transporter 1, divalent metal transporter ZIP14, and ferroportin1 in HK-2 cells and increased ferroportin1 expression in HEK293 cells. In summary, LTCC blockers alleviate iron overload-induced oxidative stress in renal epithelial cells by blocking the iron uptake and enhancing cellular iron transport and/or iron export, thus synergistically reducing the cellular iron accumulation. Consequently, LTCC blockers may be used as a novel treatment for the prevention of primary or secondary iron overload-kidney injury. Copyright © 2020 The Authors. Published by Elsevier B.V. All rights reserved.

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出版当年[2020]版：

大类 | 3 区医学

小类 | 2 区药学

最新[2025]版：

大类 | 3 区医学

小类 | 2 区药学

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第一作者机构： [a]Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, China

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通讯机构： [a]Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, China [c]Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai, 50200, Thailand [e]Institute for Cancer Medicine, School of Basic Medical Sciences, Southwest Medical University, Luzhou, Sichuan, 646000, China [*1]Department of Physiology, School of Basic Medical Sciences, Southwest Medical University, Luzhou, 646000, China

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L-type calcium channel blockers decrease the iron overload-mediated oxidative stress in renal epithelial cells by reducing iron accumulation.

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