Oxidative Stress Promotes Corticosteroid Insensitivity in Asthma and COPD.

Oxidative Stress Promotes Corticosteroid Insensitivity in Asthma and COPD.
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DOI:
10.3390/antiox10091335
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发表时间:
2021-08-24
期刊:
Antioxidants (Basel, Switzerland)
影响因子:
--
通讯作者:
Britt RD Jr
Britt RD Jr
中科院分区:
其他
文献类型:
--
作者:
Lewis BW;Ford ML;Rogers LK;Britt RD Jr

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糖皮质激素不敏感是严重哮喘和慢性阻塞性肺疾病患者的一个关键特征。这些人经历了更大的肺部氧化应激和炎症,这导致肺功能减弱和频繁恶化,尽管经常和长期使用全身大剂量皮质类固醇。活性氧氮(Ron)通过干扰糖皮质激素受体(GR)信号通路促进糖皮质激素不敏感,导致免疫和呼吸道结构细胞中促炎通路的持续激活。对哮喘和COPD模型的研究表明,皮质类固醇需要一个平衡的氧化还原环境才能有效并减少呼吸道炎症。在这篇综述中,我们讨论了氧化应激如何导致皮质类固醇不敏感,以及优化内源性抗氧化剂反应以增强皮质类固醇敏感性的重要性。未来的研究应该着眼于确定以抗氧化剂为基础的治疗如何补充皮质类固醇,以减少严重哮喘和COPD患者对长时间大剂量方案的需求。
Corticosteroid insensitivity is a key characteristic of patients with severe asthma and COPD. These individuals experience greater pulmonary oxidative stress and inflammation, which contribute to diminished lung function and frequent exacerbations despite the often and prolonged use of systemic, high dose corticosteroids. Reactive oxygen and nitrogen species (RONS) promote corticosteroid insensitivity by disrupting glucocorticoid receptor (GR) signaling, leading to the sustained activation of pro-inflammatory pathways in immune and airway structural cells. Studies in asthma and COPD models suggest that corticosteroids need a balanced redox environment to be effective and to reduce airway inflammation. In this review, we discuss how oxidative stress contributes to corticosteroid insensitivity and the importance of optimizing endogenous antioxidant responses to enhance corticosteroid sensitivity. Future studies should aim to identify how antioxidant-based therapies can complement corticosteroids to reduce the need for prolonged high dose regimens in patients with severe asthma and COPD.
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