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lIon Channels of the Islets in Type 2 Diabetes

机译:2型糖尿病岛的狮子渠道

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摘要

Ca2+ is an essential signal for pancreatic beta-cell function. Ca2+ plays critical roles in numerous beta-cell pathways such as insulin secretion, transcription, metabolism, endoplasmic reticulum function, and the stress response. Therefore, beta-cell Ca2+ handling is tightly controlled. At the plasma membrane, Ca2+ entry primarily occurs through voltage-dependent Ca2+ channels. Voltage-dependent Ca2+ channel activity is dependent on orchestrated fluctuations in the plasma membrane potential or voltage, which are mediated via the activity of many ion channels. During the pathogenesis of type 2 diabetes the beta-cell is exposed to stressful conditions, which result in alterations of Ca2+ handling. Some of the changes in beta-cell Ca2+ handling that occur under stress result from perturbations in ion channel activity, expression or localization. Defective Ca2+ signaling in the diabetic beta-cell alters function, limits insulin secretion and exacerbates hyperglycemia. In this review, we focus on the beta-cell ion channels that control Ca2+ handling and how they impact beta-cell dysfunction in type 2 diabetes. (C) 2019 Elsevier Ltd. All rights reserved.
机译:CA2 +是胰腺β细胞功能的必要信号。 CA2 +在诸如胰岛素分泌,转录,代谢,内质网功能和应力反应的许多β细胞途径中起着关键作用。因此,β-细胞CA2 +处理紧密控制。在血浆膜,CA2 +进入主要通过电压依赖性CA2 +通道进行。电压依赖性CA2 +信道活动取决于通过许多离子通道的活性介导的等离子体膜电位或电压中的策划波动。在2型糖尿病的发病机制期间,β细胞暴露于施力条件,这导致Ca2 +处理的改变。在离子通道活动中的扰动,表达或定位中的扰动下发生β细胞CA2 +处理的一些变化。糖尿病β细胞中有缺陷的Ca2 +信号传导功能,限制胰岛素分泌和加剧高血糖。在本综述中,我们专注于控制CA2 +处理以及它们如何影响2型糖尿病β细胞功能障碍的β细胞离子通道。 (c)2019 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Journal of Molecular Biology》 |2020年第5期|共21页
  • 作者单位

    Vanderbilt Univ Dept Mol Physiol &

    Biophys 7415 MRB4 Langford 2213 Garland Ave Nashville TN;

    Oregon Hlth &

    Sci Univ Dept Biochem &

    Mol Biol L224 MRB 624 3181 SW Sam Jackson Park Rd Portland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分子生物学;
  • 关键词

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